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Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

34th annual reed rotary rig census  

SciTech Connect

This article reports that the number of rigs active according to the 1986 census is 1052, which represents a decline of 1573 rigs from 1985 figures. This 60 percent decrease is the largest decline of active rigs in the 34-year history of the census. The 1986 census takers found 3993 rigs are available with the capacity to drill deeper than 3000 ft. The count has thus declined by 416 rigs (9 percent) from the 1985 total of 4409. Rig availability declined for the fourth consecutive year following nine straight years of fleet expansion (1974-1982). During the past four years, 1651 rigs have been removed from the drilling fleet representing a 29 percent decline from the record high number of rigs available in 1982. The 1986 decline in the available U.S. fleet is considerably less than what many industry observers had been anticipating. A larger decrease in the rig fleet has not been realized for a number of reasons.

Hutchinson, D.L.; Pastusek, P.E.

1986-10-01T23:59:59.000Z

2

Table 4.4 Crude Oil and Natural Gas Rotary Rigs in ...  

U.S. Energy Information Administration (EIA)

Table 4.4 Crude Oil and Natural Gas Rotary Rigs in Operation, 1949-2011 (Number of Rigs) Year: By Site : By Type: Total 1: Onshore

3

U.S. Offshore Crude Oil and Natural Gas Rotary Rigs in Operation ...  

U.S. Energy Information Administration (EIA)

U.S. Offshore Crude Oil and Natural Gas Rotary Rigs in Operation (Number of Elements) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec; 1973: 99: 89: 90: 79: 72 ...

4

U.S. Offshore Crude Oil and Natural Gas Rotary Rigs in Operation ...  

U.S. Energy Information Administration (EIA)

U.S. Offshore Crude Oil and Natural Gas Rotary Rigs in Operation (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 ...

5

U.S. Crude Oil and Natural Gas Rotary Rigs in Operation (Number of ...  

U.S. Energy Information Administration (EIA)

U.S. Crude Oil and Natural Gas Rotary Rigs in Operation (Number of Elements) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec; 1973: 1,219: 1,126: 1,049: 993 ...

6

rig_specs.indd  

NLE Websites -- All DOE Office Websites (Extended Search)

RIG SPECIFICATIONS R MOTC Rig No. 1 is a 2005 Crown (Calgary, Canada) trailer-mounted drilling rig. It incor- porates several features found desirable over numerous drilling tests...

7

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

12-i Chapter 12 Rigging Hardware CHAPTER 12 RIGGING HARDWARE This chapter provides requirements for rigging accessories used in hoisting and rigging - shackles, eyebolts, eye nuts, links, rings, swivels, wire-rope clips, turnbuckles, rigging hooks, and load-indicating devices and implements the requirements of ANSI/ASME B30.26, "Rigging Hardware" (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). 12.1 GENERAL..................................................................................................................................12-1 12.1.1 Good and Bad Rigging Practices ...................................................................................12-1 12.2 RIGGING HOOKS.....................................................................................................................12-5

8

Hoisting & Rigging Fundamentals  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hoisting and Rigging Hoisting and Rigging Fundamentals for Riaaers and ODerators Pendant Control - Components TR244C, Rev. 5 December 2002 TR244C Rev . 5 TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii HOISTING AND RIGGING OBJECTIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 WIRE ROPE SLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SYNTHETIC WEBBING SLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I O CHAINSLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 METAL MESH SLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SPREADER BEAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 RIGGING HARDWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

Hoisting & Rigging Lift Plan  

NLE Websites -- All DOE Office Websites (Extended Search)

Authorized Personnel (attach more sheets if necessary) Printed name Signature Date SSRL Hoisting & Rigging Lift Plan Stanford Synchrotron Radiation Laboratory May 16, 2005...

10

A rigged market  

SciTech Connect

The mobile rig market remains a unique sector of the global upstream oil and gas industry. Big oil is continuing to emerge blinking from the darkness of its recent cash-starved existence to bask in the glory of a resurgent oil price. But the rig sector is once again lagging behind the pace being set by operators as they open up their wallets for new or delayed exploration and production projects. This paper gives statistics on worldwide count and contracts.

Thomas, M.

2000-02-01T23:59:59.000Z

11

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE-STD-1090-2011 DOE-STD-1090-2011 September 2011 Superseding DOE-STD-1090-2007 August 2007 DOE STANDARD HOISTING AND RIGGING U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. INCH-POUND INTENTIONALLY BLANK DOE-STD-1090-2011 iii Introduction The U.S. Department of Energy (DOE) Hoisting and Rigging Standard is intended to be used by supervisors, line managers, safety personnel, equipment operators, riggers and other personnel responsible for the safety of hoisting and rigging operations at DOE sites. It may be used as either contract document or as a best practices guide at the site's or program office's discretion. The standard invokes applicable OSHA and national consensus standards but also delineates

12

Rotary drive mechanism  

Science Conference Proceedings (OSTI)

This patent describes a rotary drive mechanism which includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de- energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti- overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

Kenderdine, E.W.

1991-10-08T23:59:59.000Z

13

Rotary drive mechanism  

Science Conference Proceedings (OSTI)

A rotary drive mechanism includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de-energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti-overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

Kenderdine, Eugene W. (Albuquerque, NM)

1991-01-01T23:59:59.000Z

14

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

13-i CHAPTER 13 LOAD HOOKS This chapter provides safety standards for the inspection, testing, and maintenance of load hooks installed on cranes or hoists and implements the requirements of ASME B30.10, Chapter 10-1, "Hooks." See Chapter 12, "Rigging Accessories," for rigging hook requirements (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). 13.1 GENERAL ...............................................................................................................................13-1 13.1.1 Marking......................................................................................................................13-1 13.1.2 Attachments ...............................................................................................................13-1

15

EM Rotary Filter Program  

Electrical Junction Box Motors for Rotary Microfilters Motor Operated Valves Electrical ... savings SMPs Clarified Salt Solution Pumping System Sr-90 and actinides

16

Program: Hoisting and Rigging  

E-Print Network (OSTI)

The purpose of these requirements is to ensure that hoisting and rigging (H&R) equipment is safe to operate. 2 Scope These requirements cover inspections and maintenance over the life of H&R equipment. Requirements are listed in terms of ? Types of inspection (initial, pre-use, frequent, periodic, and third party) and maintenance (preventative, operational testing, and load testing) Responsibilities (person who ensures that the inspection was performed and person performing the inspection) Documentation requirements – HRED refers to the H&R Equipment Database, which is maintained by the H&R inspector. Submit inspection and maintenance data to this inspector to stay in compliance. – CR refers to custodian records, which are maintained by the equipment custodian. Details on what to look for and how to conduct the inspection are listed in Department of Energy Standard 1090, “Hoisting and Rigging ” (DOE-STD-1090-2007).

unknown authors

2009-01-01T23:59:59.000Z

17

Joint venture builds new rigs  

Science Conference Proceedings (OSTI)

Recent emphasis on increasing drilling efficiency and avoiding additional environmental damage has led Russian operator Gazprom to specify a new generation drilling rig for exploratory and development drilling in the Astrakhan gas/condensate field in southwestern Russia. The two rigs on order combine Russian and American technology and include a unique system for processing contaminated drill cuttings. The article describes the rig package and cuttings treatment system.

NONE

1995-05-01T23:59:59.000Z

18

Hoisting & Rigging Assessment Plan  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HOISTING & RIGGING HOISTING & RIGGING Assessment Plan NNSA/Nevada Site Office Facility Representative Division Performance Objective: To determine that hoisting and rigging operations are conducted according to "industry best standards" for increasing equipment reliability while assuring worker safety, and to verify issues being addressed in BN Hoisting assessment. Criteria: Lifts are identified and categorized appropriately for scheduled maintenance. DOE-STD-1090-2001 An integrated process ensures safety issues are identified and controls established. DOE-STD-1090-2001 Personnel operating and maintaining the hoisting equipment are trained; they understand their roles and responsibilities. DOE-STD-1090-2001 Maintenance conducts safety inspections of hoisting and rigging

19

Hoisting & Rigging Assessment Plan  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HOISTING & RIGGING HOISTING & RIGGING Assessment Plan NNSA/Nevada Site Office Facility Representative Division Performance Objective: To determine that hoisting and rigging operations are conducted according to "industry best standards" for increasing equipment reliability while assuring worker safety, and to verify issues being addressed in BN Hoisting assessment. Criteria: Lifts are identified and categorized appropriately for scheduled maintenance. DOE-STD-1090-2001 An integrated process ensures safety issues are identified and controls established. DOE-STD-1090-2001 Personnel operating and maintaining the hoisting equipment are trained; they understand their roles and responsibilities. DOE-STD-1090-2001 Maintenance conducts safety inspections of hoisting and rigging

20

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1-i 1-i CHAPTER 11 WIRE ROPE AND SLINGS This chapter provides requirements for the fabrication and use of wire rope and slings used in hoisting and rigging and implements the requirements of ASME B30.9, Slings (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). . 11.1 GENERAL ...............................................................................................................................11-1 11.2 WIRE ROPE ............................................................................................................................11-4 11.2.1 Wire-Rope Lays .........................................................................................................11-4 11.2.2 Wire-Rope Cores .......................................................................................................11-4

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4 4 BELOW-THE-HOOK LIFTING DEVICES 14-i This chapter provides the requirements for below-the-hook lifting devices used in hoisting and rigging, such as spreader bars, lifting yokes, and lift fixtures. This section implements the requirements of ASME B30.20, "Below-the-Hook Lifting Devices" (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). NOTE: Special lifting devices for shipping containers weighing 10,000 lb or more that are used for radioactive materials are governed by ANSI N14.6 ["Standard for Special Lifting Devices for Shipping Containers Weighing 10,000 Pounds (4,500 kg) or More for Nuclear Materials."] 14.1 GENERAL ...............................................................................................................................14-1

22

Rotary mechanical latch  

Science Conference Proceedings (OSTI)

A rotary mechanical latch for positive latching and unlatching of a rotary device with a latchable rotating assembly having a latching gear that can be driven to latched and unlatched states by a drive mechanism such as an electric motor. A cam arm affixed to the latching gear interfaces with leading and trailing latch cams affixed to a flange within the drive mechanism. The interaction of the cam arm with leading and trailing latch cams prevents rotation of the rotating assembly by external forces such as those due to vibration or tampering.

Spletzer, Barry L.; Martinez, Michael A.; Marron, Lisa C.

2012-11-13T23:59:59.000Z

23

Solar heated rotary kiln  

SciTech Connect

A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

Shell, Pamela K. (Tracy, CA)

1984-01-01T23:59:59.000Z

24

Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

SciTech Connect

This standard is intended as a reference document to be used by supervisors, line managers, safety personnel, equipment operators, and any other personnel responsible for safety of hoisting and rigging operations at DOE sites. It quotes or paraphrases the US OSHA and ANSI requirements. It also encompasses, under one cover,hoisting and rigging requirements, codes, standards, and regulations, eliminating the need to maintain extensive (and often incomplete) libraries of hoisting and rigging standards throughout DOE. The standard occasionally goes beyond the minimum general industry standards established by OSHA and ANSI, and also delineates the more stringent requirements necessary to accomplish the complex, diversified, critical, and often hazardous hoisting and rigging work found with the DOE complex.

NONE

1995-06-01T23:59:59.000Z

25

Rotary shaft sealing assembly  

DOE Patents (OSTI)

A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

Dietle, Lannie L. (Houston, TX); Schroeder, John E. (Richmond, TX); Kalsi, Manmohan S. (Houston, TX); Alvarez, Patricio D. (Richmond, TX)

2010-09-21T23:59:59.000Z

26

Rotary shaft sealing assembly  

DOE Patents (OSTI)

A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

Dietle, Lannie L; Schroeder, John E; Kalsi, Manmohan S; Alvarez, Patricio D

2013-08-13T23:59:59.000Z

27

Rotary pneumatic valve  

DOE Patents (OSTI)

A rotary pneumatic valve which is thrust balanced and the pneumatic pressure developed produces only radial loads on the valve cylinder producing negligible resistance and thus minimal torque on the bearings of the valve. The valve is multiplexed such that at least two complete switching cycles occur for each revolution of the cylinder spindle. 4 figs.

Hardee, H.C.

1989-08-02T23:59:59.000Z

28

Rotary magnetic heat pump  

DOE Patents (OSTI)

A rotary magnetic heat pump constructed without flow seals or segmented rotor accomplishes recuperation and regeneration by using split flow paths. Heat exchange fluid pumped through heat exchangers and returned to the heat pump splits into two flow components: one flowing counter to the rotor rotation and one flowing with the rotation.

Kirol, Lance D. (Shelly, ID)

1988-01-01T23:59:59.000Z

29

Rotary Burner Demonstration  

Science Conference Proceedings (OSTI)

The subject technology, the Calcpos Rotary Burner (CRB), is a burner that is proposed to reduce energy consumption and emission levels in comparison to currently available technology. burners are used throughout industry to produce the heat that is required during the refining process. Refineries seek to minimize the use of energy in refining while still meeting EPA regulations for emissions.

Paul Flanagan

2003-04-30T23:59:59.000Z

30

Rotary magnetic heat pump  

DOE Patents (OSTI)

A rotary magnetic heat pump constructed without flow seals or segmented rotor accomplishes recuperation and regeneration by using split flow paths. Heat exchange fluid pumped through heat exchangers and returned to the heat pump splits into two flow components: one flowing counter to the rotor rotation and one flowing with the rotation. 5 figs.

Kirol, L.D.

1987-02-11T23:59:59.000Z

31

Hoisting and Rigging: Inspection and Maintenance Requirements  

E-Print Network (OSTI)

Devices, Slings, and Rigging Hardware and Accessories (SLAC-I-730-0A21S-036) Hoisting and Rigging: PreHoisting and Rigging: Inspection and Maintenance Requirements URL: http://www-group.slac.stanford.edu/esh/eshmanual/references/hoisting Department: Field Safety and Building Inspection Program: Hoisting and Rigging Authority: ESH Manual, Chapter

Wechsler, Risa H.

32

Recirculating rotary gas compressor  

DOE Patents (OSTI)

A positive displacement, recirculating Roots-type rotary gas compressor is described which operates on the basis of flow work compression. The compressor includes a pair of large diameter recirculation conduits which return compressed discharge gas to the compressor housing, where it is mixed with low pressure inlet gas, thereby minimizing adiabatic heating of the gas. The compressor includes a pair of involutely lobed impellers and an associated port configuration which together result in uninterrupted flow of recirculation gas. The large diameter recirculation conduits equalize gas flow velocities within the compressor and minimize gas flow losses. The compressor is particularly suited to applications requiring sustained operation at higher gas compression ratios than have previously been feasible with rotary pumps, and is particularly applicable to refrigeration or other applications requiring condensation of a vapor. 12 figs.

Weinbrecht, J.F.

1992-02-25T23:59:59.000Z

33

Recirculating rotary gas compressor  

DOE Patents (OSTI)

A positive displacement, recirculating Roots-type rotary gas compressor which operates on the basis of flow work compression. The compressor includes a pair of large diameter recirculation conduits (24 and 26) which return compressed discharge gas to the compressor housing (14), where it is mixed with low pressure inlet gas, thereby minimizing adiabatic heating of the gas. The compressor includes a pair of involutely lobed impellers (10 and 12) and an associated port configuration which together result in uninterrupted flow of recirculation gas. The large diameter recirculation conduits equalize gas flow velocities within the compressor and minimize gas flow losses. The compressor is particularly suited to applications requiring sustained operation at higher gas compression ratios than have previously been feasible with rotary pumps, and is particularly applicable to refrigeration or other applications requiring condensation of a vapor.

Weinbrecht, John F. (601 Oakwood Loop, NE., Albuquerque, NM 87123)

1992-01-01T23:59:59.000Z

34

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9-2004 9-2004 12-i Chapter 12 Rigging Accessories CHAPTER 12 RIGGING ACCESSORIES This chapter provides requirements for rigging accessories used in hoisting and rigging - shackles, eyebolts, rings, wire-rope clips, turnbuckles, rigging hooks, and load-indicating devices. 12.1 GENERAL ...............................................................................................................................12-1 12.1.1 Inspections .................................................................................................................12-1 12.1.2 Testing .....................................................................................................................12-3 12.1.3 Good and Bad Rigging Practices ...............................................................................12-3

35

PNNL Hoisting and Rigging Manual  

Science Conference Proceedings (OSTI)

This manual describes the safe and cost effective operation, inspection, maintenance, and repair requirements for cranes, hoists, fork trucks, slings, rigging hardware, and hoisting equipment. It is intended to be a user's guide to requirements, codes, laws, regulations, standards, and practices that apply to Pacific Northwest National Laboratory (PNNL) and its subcontractors.

Haynie, Todd O.; Fullmer, Michael W.

2008-12-29T23:59:59.000Z

36

Hoisting and rigging manual: Uncontrolled document  

Science Conference Proceedings (OSTI)

This document is a draft copy of a Hoisting and Rigging Manual for the Department of Energy. The manual is divided into ten chapters. The chapter titles follow: terminology and definitions; operator training and qualification; overhead and gantry cranes; mobile cranes; forklift trucks; hoists; hooks; wire rope, slings, and rigging accessories; construction hoisting and rigging equipment requirements; references.

NONE

1991-05-01T23:59:59.000Z

37

Hoisting & Rigging Lift Plan  

NLE Websites -- All DOE Office Websites (Extended Search)

Hoisting & Rigging Lift Plan Hoisting & Rigging Lift Plan Stanford Synchrotron Radiation Laboratory May 16, 2005 SSRL-HRLP-000-R0 Page 1 of 3 General Information Lift Plan Document # Plan prepared by: Describe the load or items to be lifted: Could the load, if dropped, release hazardous materials or radioactivity? No Yes (describe) Is the load irreplaceable or would it be very costly to replace if damaged? No Yes (describe) Brief description of lift activities (specify if rolling or flipping involved) Equipment Information Equipment ID: Equipment custodian: Rated capacity: Operator capacity : Personnel Protective Equipment (PPE) Steel-toed shoes Required for all personnel involved with lift activity to protect from crushing of feet/toes

38

Somebody better find some rigs  

SciTech Connect

The paper discusses the outlook for the gas and oil industries of the Middle East. Field development projects abound, as the larger exporting nations pursue ambitious policies of production expansion. However, their plans may be hampered by the growing worldwide shortage of rigs. Separate evaluations are given for Saudi Arabia, Kuwait, Neutral Zone, Abu Dhabi, Iran, Iraq, Qatar, Yemen, Syria, Dubai, Turkey, Sharjah, and briefly for Bahrain, Israel, Jordan, UAE-Ajman, and UAE-Ras al-Khaimah.

NONE

1997-08-01T23:59:59.000Z

39

Viscous fluid sheets  

E-Print Network (OSTI)

We present a general theory for the dynamics of thin viscous sheets. Employing concepts from differential geometry and tensor calculus we derive the governing equations in terms of a coordinate system that moves with the ...

Savva, Nikos

2007-01-01T23:59:59.000Z

40

Modular designs highlight several new rigs  

SciTech Connect

A new platform drilling rig for offshore Trinidad and two new land rigs for the former Soviet Union feature the latest in drilling and construction technology and modular components for quick rig up/rig down. The Sundowner 801 was mock-up tested in Galveston, TX, a few weeks ago in preparation for its load-out to the Dolphin field offshore Trinidad. Two other new units, UNOC 500 DE series land rigs, were recently constructed and mock-up tested in Ekaterinburg, Russia, for upcoming exploratory work for RAO Gazprom, a large natural gas producer in Russia. These rigs are unique in that they were constructed from new components made both in the US and in Russia. The paper describes all three units.

Rappold, K.

1995-12-04T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Rotary kiln seal  

DOE Patents (OSTI)

A rotary seal used to prevent the escape of contaminants from a rotating kiln incinerator. The rotating seal combines a rotating disc plate which is attached to the rotating kiln shell and four sets of non-rotating carbon seal bars housed in a primary and secondary housing and which rub on the sides of the disc. A seal air system is used to create a positive pressure in a chamber between the primary and secondary seals to create a positive air flow into the contaminated gas chamber. The seal air system also employs an air inlet located between the secondary and tertiary seals to further insure that no contaminants pass the seal and enter the external environment and to provide makeup air for the air which flows into the contaminated gas chamber. The pressure exerted by the seal bars on the rotating disc is controlled by means of a preload spring. The seal is capable of operating in a thermally changing environment where the both radial expansion and axial movement of the rotating kiln do not result in the failure of the seal.

Drexler, R.L.

1990-10-17T23:59:59.000Z

42

Rotary kiln seal  

SciTech Connect

A rotary seal used to prevent the escape of contaminates from a rotating kiln incinerator. The rotating seal combines a rotating disc plate which is attached to the rotating kiln shell and four sets of non-rotating carbon seal bars housed in a primary and secondary housing and which rub on the sides of the disc. A seal air system is used to create a positive pressure in a chamber between the primary and secondary seals to create a positive air flow into the contaminated gas chamber. The seal air system also employs an air inlet located between the secondary and tertiary seals to further insure that no contaminates pass the seal and enter the external environment and to provide makeup air for the air which flows into the contaminated gas chamber. The pressure exerted by the seal bars on the rotating disc is controlled by means of a preload spring. The seal is capable of operating in a thermally changing environment where the both radial expansion and axial movement of the rotating kiln do not result in the failure of the seal.

Drexler, Robert L. (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

43

Scheduling Workover Rigs for Onshore Oil Production  

E-Print Network (OSTI)

available workover rigs, so as to minimize the production loss associated with the ... novic [5, 6, 7] is based on the exploration of a dynamic neighborhood model.

44

Performance optimization of rotary dehumidifiers  

SciTech Connect

A rotary dehumidifier consists of a rotating porous matrix made of a desiccant with mechanically supporting materials. The dehumidification performance of a rotary dehumidifier wheel depends on its rotational speed, the sorption properties of the desiccant, the heat and mass transfer characteristics of the matrix, and the size of the dehumidifier. The effect of the rotational speed on the dehumidification performance of a rotary dehumidifier has been investigated by Zheng, Worek, and Novosel (1993). this paper extends that previous work and investigates the effects of desiccant sorption properties, the heat and mass transfer characteristics, and the size of the rotary dehumidifier on the dehumidification performance. The results show that the using desiccant materials in a rotary dehumidifier with different adsorption characteristics results in a wide variation in dehumidification performance. However, the maximum performance of a rotary dehumidifier occurs for a desiccant material having an isotherm shape that can be characterized to have a separation factor of 0.07. Also, as the desiccant moisture uptake increases, the dehumidifier performance also increases. However, the performance improvement for a desiccant matrix having a maximum moisture uptake of larger than 0.25 by weight is not significant. The heat and mass transfer properties and the size of rotary dehumidifier are characterized by the number of transfer units NTU. Generally, the larger the NTU, the better dehumidification performance. However, similar to the maximum moisture uptake, when the NTU is larger than 12, the performance will not improve significantly. Also, the dehumidifier with the most favorable adsorption characteristic has a slower rotational speed, which results in lower power requirements to rotate the desiccant wheel and smaller carry-over losses.

Zheng, W.; Worek, W.M. [Univ. of Chicago, IL (United States). Dept. of Mechanical Engineering; Novosel, D. [Gas Research Inst., Chicago, IL (United States)

1995-02-01T23:59:59.000Z

45

Scheduling workover rigs for onshore oil production  

Science Conference Proceedings (OSTI)

Many oil wells in Brazilian onshore fields rely on artificial lift methods. Maintenance services such as cleaning, reinstatement, stimulation and others are essential to these wells. These services are performed by workover rigs, which are available ... Keywords: Combinatorial optimization, Heuristics, Oil production, VNS, Workover rigs

Dario J. Aloise; Daniel Aloise; Caroline T. M. Rocha; Celso C. Ribeiro; José C. Ribeiro Filho; Luiz S. S. Moura

2006-04-01T23:59:59.000Z

46

Operators wary: Stack that rig correctly  

SciTech Connect

This article points out that reasons for planned, scheduled preservation of offshore rigs and equipment are as varied as the owner's interest in them. As a result, no single plan or procedure can meet the requirements of every rig owner. Each rig and its equipment must be treated individually for a number of reasons. The most effective and economical rig preservation program is the result of both the owner and preservation contractor understanding all the objectives and the time frame involved. Numerous questions should be answered up front. How long will preservation measures be required. Is the rig to be maintained in an operational state. Will there be frequent trips to the rig. Will the unit be kept intact, or equipment removed as needed for operation of other rigs. Is the whole unit or any of its components for sale. Will insurance and certifications be affected by the preservation methods used. Perhaps most important is the time period. If the rig is to be stacked for an extended length of time, the owner will likely opt for ''cold,'' or inoperable, preservation. In this condition, engines are treated to protect cylinders, cooling systems and drive components in a static condition.

Moriniere, J.

1987-07-01T23:59:59.000Z

47

Solar-heated rotary kiln  

DOE Patents (OSTI)

A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate is disclosed. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

Shell, P.K.

1982-04-14T23:59:59.000Z

48

Rotary actuator utilizing a shape memory alloy  

SciTech Connect

An apparatus is described comprising; (a) rotary accumulator means for accumulating a length of a shape memory alloy wire; (b) the shape memory alloy wire attached at one end to a point fixed with respect to the rotary accumulator means and attached at a second end to the rotary accumulator means; (c) biasing means for biasing the rotary accumulator means to a first position; and (d) means for heating the shape memory alloy wire to cause the shape memory alloy wire to contract, thereby rotating the rotary accumulator means from the first position to a second position.

Bloch, J.T.

1988-08-09T23:59:59.000Z

49

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 5 CONSTRUCTION HOISTING AND RIGGING EQUIPMENT REQUIREMENTS 15-i Chapter 15 Construction Hoisting and Rigging Equipment Requirements This chapter outlines the requirements for the safe use of hoisting and rigging equipment on construction projects at DOE installations. 15.1 GENERAL ...............................................................................................................................15-1 15.2 PERSONNEL QUALIFICATIONS.........................................................................................15-2 15.2.1 Qualified Operators of Mobile Cranes.......................................................................15-2 15.2.2 Qualified Operators of Forklift Trucks ......................................................................15-3

50

Study on an Electric Drilling Rig with Hydraulic Energy Storage  

Science Conference Proceedings (OSTI)

An electric drilling rig with hydraulic energy storage is researched. This rig can recover the potential energy of the drill stem lowered and owns remarkable energy-saving effect. The mathematical model of the new rig lifting the drill stem was deduced ... Keywords: electric drilling rig, energy-recovering, energy-saving

Zhang Lujun

2010-06-01T23:59:59.000Z

51

Toolpusher is key to efficient rig operation  

Science Conference Proceedings (OSTI)

Toolpushers earn a higher salary, control more personnel, and are responsible for a more expensive operation than many graduate MBAs. As a result, toolpushers are key to improved rig efficiencies and reduced crew turnover. For example, by having its toolpushers in Libya implement a new managerial approach, Santa Fe Drilling Co. reduced labor turnover 30%, reduced the number of lost-time accidents 58%, and increased average rig inspection scores 6%. During the boom years of drilling, toolpushers complained often about the poor quality of roustabouts and roughnecks assigned to them. Many toolpushers held poor screening of personnel responsible, and felt justified in firing those who were slow to adapt. Few of them considered that they were directly responsible. Today's toolpusher must realize that he is responsible not only for the rig, its maintenance, and its drilling performance, but for training and development of the rig's personnel as well.

Fortney, K.

1983-09-01T23:59:59.000Z

52

Table 4.4 Crude Oil and Natural Gas Rotary Rigs in ...  

U.S. Energy Information Administration (EIA)

1954. na: na: na: na: 2,508: 1955. na: na: na: na: 2,686: 1956. na: na: na: na: 2,620: 1957. na: na: na: na: 2,426: 1958. na: na: na: na: 1,922: 1959. ...

53

U.S. Onshore Crude Oil and Natural Gas Rotary Rigs in ...  

U.S. Energy Information Administration (EIA)

1,954: 1,979: 2,016: 2,066: 2,103: 2,122: 2,127: 2,138: 2,156: 2,169: 2,098: 1979: 1,992: 1,858: 1,768: 1,736: 1,762: 1,794: 1,889: 2,014: 2,069: ...

54

High bandwidth rotary fast tool servos and a hybrid rotary/linear electromagnetic actuator  

E-Print Network (OSTI)

This thesis describes the development of two high bandwidth short-stroke rotary fast tool servos and the hybrid rotary/linear electromagnetic actuator developed for one of them. Design insights, trade-off methodologies, ...

Montesanti, Richard Clement

2005-01-01T23:59:59.000Z

55

Rotary kilns - transport phenomena and transport processes  

Science Conference Proceedings (OSTI)

Rotary kilns and rotating industrial drying ovens are used for a wide variety of applications including processing raw minerals and feedstocks as well as heat-treating hazardous wastes. They are particularly critical in the manufacture of Portland cement. Their design and operation is critical to their efficient usage, which if done incorrectly can result in improperly treated materials and excessive, high fuel costs. This book treats all engineering aspects of rotary kilns, including thermal and fluid principles involved in their operation, as well as how to properly design an engineering process that uses rotary kilns. Chapter 1: The Rotary Kiln Evolution and Phenomenon Chapter 2: Basic Description of Rotary Kiln Operation Chapter 3: Freeboard Aerodynamic Phenomena Chapter 4: Granular Flows in Rotary Kilns Chapter 5: Mixing and Segregation Chapter 6: Combustion and Flame - includes section on types of fuels used in rotary kilns, coal types, ranking and analysis, petroleum coke combustion, scrap tire combustion, pulverized fuel (coal/coke) firing in kilns, pulverized fuel delivery and firing systems. Chapter 7: Freeboard Heat Transfer Chapter 8: Heat Transfer Processes in the Rotary Kiln Bed Chapter 9: Mass and Energy Balance Chapter 10: Rotary Kiln Minerals Process Applications.

Boateng, A.

2008-01-15T23:59:59.000Z

56

Unique rig designed for northern areas  

SciTech Connect

The development of a new generation of drilling and support vessels specially designed to allow year-round drilling off the northern coast of Norway is discussed. New and better equipment is necessary so year-round operations can be done safely and without danger to the environment. To achieve that, a specially designed drilling rig, as well as support and standby vessels are being developed. A quantitative safety analysis of the rig is presently being carried out. The rig will be highly computerized. The computer software will contain programs for stability calculation, ballast recommendation, automatic trim, automatic ballast, automatic mud mix, strain/stress monitoring, dynamic stability, warehouse/maintenance and drilling data acquisition.

1984-05-01T23:59:59.000Z

57

Self propelled drilling rig starts offshore exploration  

SciTech Connect

Ocean Drilling and Exploration Co. recently commissioned its new $12 million self-propelled, semisubmersible drilling rig, Ocean Prospector, at Mitsubishi Shipyard, Japan, where the rig was built. Initial trail runs completed adjacent to the shipyard indicated that the ship has a speed of 7 kn ahead and 3 kn astern. Steering also is reported to be excellent. The rig has a minimum turning radius of approx. 2 barge lengths and shows instant response. This rig is powered by 4 Fairbanks Morse, 10-cylinder opposed piston, model 38D8-1/8 diesel engines. Each engine is rated at 1,600 hp at 720 rpm and they drive eight 1,600 kw, traction type D-C generators and two 1,000 kw A-C generators. The rated operating depth of the unit afloat is 600 ft of water. The overall length of Ocean Prospector is just over 344 ft, with the beam measuring 263-1/2 ft. During transit, when the rig will be completely deballasted, it will have a draft of approx. 20 ft. When it reaches the drilling site, ballast water will be pumped into the 18 ballast tanks until the draft is increased to 70 ft. At this point, the underside of the main deck will be 50 ft above the mean surface of the sea. Drilling operations will be conducted while the rig is at the 70 ft draft. The mooring system will consist of eight 2-3/4 in. chains, each measuring 3,300 ft in length and connected to a 15-ton anchor.

1971-05-01T23:59:59.000Z

58

Rig scarcity prompts innovative drilling solution  

Science Conference Proceedings (OSTI)

Unable to locate a shallow-water offshore rig for its program in Indonesia, British Gas International developed an innovative pad/ballasted barge configuration to utilize a land rig, which was available. Many non-typical problems were encountered and solved to establish the drilling location 600 m (2,000 ft) from the shore in Bintuni Bay in Irian Jaya, eastern Indonesia. The final hybrid configuration has sparked interesting debate as to whether the operation should be designated as onshore or offshore. The paper discusses the project overview, concept development, construction, and operations.

Lattimore, G.M.; Gott, T.; Feagin, J.

1997-11-01T23:59:59.000Z

59

Viscous sludge sample collector  

DOE Patents (OSTI)

A vertical core sample collection system for viscous sludge. A sample tube's upper end has a flange and is attached to a piston. The tube and piston are located in the upper end of a bore in a housing. The bore's lower end leads outside the housing and has an inwardly extending rim. Compressed gas, from a storage cylinder, is quickly introduced into the bore's upper end to rapidly accelerate the piston and tube down the bore. The lower end of the tube has a high sludge entering velocity to obtain a full-length sludge sample without disturbing strata detail. The tube's downward motion is stopped when its upper end flange impacts against the bore's lower end inwardly extending rim.

Beitel, George A. (Richland, WA)

1983-01-01T23:59:59.000Z

60

Comparative analysis of core drilling and rotary drilling in volcanic terrane  

DOE Green Energy (OSTI)

Initially, the goal of this report is to compare and contrast penetration rates of rotary-mud drilling and core drilling in young volcanic terranes. It is widely recognized that areas containing an abundance of recent volcanic rocks are excellent targets for geothermal resources. Exploration programs depend heavily upon reliable subsurface information, because surface geophysical methods may be ineffective, inconclusive, or both. Past exploration drilling programs have mainly relied upon rotary-mud rigs for virtually all drilling activity. Core-drilling became popular several years ago, because it could deal effectively with two major problems encountered in young volcanic terranes: very hard, abrasive rock and extreme difficulty in controlling loss of circulation. In addition to overcoming these difficulties, core-drilling produced subsurface samples (core) that defined lithostratigraphy, structure and fractures far better than drill-chips. It seemed that the only negative aspect of core drilling was cost. The cost-per-foot may be two to three times higher than an ''initial quote'' for rotary drilling. In addition, penetration rates for comparable rock-types are often much lower for coring operations. This report also seeks to identify the extent of wireline core drilling (core-drilling using wireline retrieval) as a geothermal exploration tool. 25 refs., 21 figs., 13 tabs.

Flynn, T.; Trexler, D.T.; Wallace, R.H. Jr. (ed.)

1987-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Local entropy generation analysis of a rotary magnetic heat pump regenerator  

SciTech Connect

The rotary magnetic heat pump has attractive thermodynamic performance but it is strongly influenced by the effectiveness of the regenerator. This study uses local entropy generation analysis to evaluate the regenerator design and to suggest design improvements. The results show that performance of the proposed design is dominated by heat transfer related entropy generation. This suggests that enhancement concepts that improve heat transfer should be considered, even if the enhancement causes a significant increase in viscous losses (pressure drop). One enhancement technique, the use of flow disrupters, was evaluated and the results showed that flow disrupters can significantly reduce thermodynamic losses.

Drost, M.K.; White, M.D.

1990-04-01T23:59:59.000Z

62

Mixed Stream Test Rig (MISTER) Startup Report  

DOE Green Energy (OSTI)

This report describes the work accomplished to date to design, procure, assemble, authorize, and startup the Mixed Stream Test Rig (MISTER) at the Idaho National Laboratory (INL). It describes the reasons for establishing this capability, physical configuration of the test equipment, operations methodology, initial success, and plans for completing the initial 1,000 hour test.

Charles Park

2011-02-01T23:59:59.000Z

63

DOE-STD-1090-99; DOE Standard Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

NLE Websites -- All DOE Office Websites (Extended Search)

TS TS INCH-POUND DOE-STD-1090-99 March 1999 Superseding DOE-STD-1090-96 September 1996 DOE STANDARD HOISTING AND RIGGING (Formerly Hoisting and Rigging Manual) U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. DOE STANDARD HOISTING AND RIGGING (Formerly Hoisting and Rigging Manual) Summary of Changes as of March 1999

64

ADVANCED HOT SECTION MATERIALS AND COATINGS TEST RIG  

SciTech Connect

The Hyperbaric Advanced Hot Section Materials & Coating Test Rig program provides design and implementation of a laboratory rig capable of simulating the hot gas path conditions of coal-gas fired industrial gas turbine engines. The principal activity during this reporting period were the evaluation of syngas combustor concepts, the evaluation of test section concepts and the selection of the preferred rig configuration.

Scott Reome; Dan Davies

2004-04-30T23:59:59.000Z

65

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 5 CONSTRUCTION HOISTING AND RIGGING EQUIPMENT REQUIREMENTS 15-i This chapter outlines the requirements for the safe use of hoisting and rigging equipment on construction projects at DOE installations. 15.1 GENERAL ...............................................................................................................................15-1 15.2 PERSONNEL QUALIFICATIONS.........................................................................................15-2 15.2.1 Qualified Operators of Mobile Cranes.......................................................................15-2 15.2.2 Qualified Operators of Forklift Trucks ......................................................................15-3 15.2.3 Qualified Riggers .......................................................................................................15-4

66

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3 3 LOAD HOOKS 13-i Chapter 13 Load Hooks This chapter provides safety standards for the inspection, testing, and maintenance of load hooks installed on cranes or hoists and implements the requirements of ASME B30.10, Chapter 10-1, "Hooks." See Chapter 12, "Rigging Accessories," for rigging hook requirements. 13.1 GENERAL ...............................................................................................................................13-1 13.1.1 Marking......................................................................................................................13-1 13.1.2 Attachments ...............................................................................................................13-1

67

Floating seal system for rotary devices  

DOE Patents (OSTI)

This invention relates to a floating seal system for rotary devices to reduce gas leakage around the rotary device in a duct and across the face of the rotary device to an adjacent duct. The peripheral seal bodies are made of resilient material having a generally U-shaped cross section wherein one of the legs is secured to a support member and the other of the legs forms a contacting seal against the rotary device. The legs of the peripheral seal form an extended angle of intersection of about 10.degree. to about 30.degree. in the unloaded condition to provide even sealing forces around the periphery of the rotary device. The peripheral seal extends around the periphery of the support member except where intersected by radial seals which reduce gas leakage across the face of the rotary device and between adjacent duct portions. The radial seal assembly is fabricated from channel bars, the smaller channel bar being secured to the divider of the support member and a larger inverted rigid floating channel bar having its legs freely movable over the legs of the smaller channel bar forming therewith a tubular channel. A resilient flexible tube is positioned within the tubular channel for substantially its full length to reduce gas leakage across the tubular channel. A spacer extends beyond the face of the floating channel near each end of the floating channel a distance to provide desired clearance between the floating channel and the face of the rotary device.

Banasiuk, Hubert A. (Chicago, IL)

1983-01-01T23:59:59.000Z

68

Floating seal system for rotary devices  

DOE Patents (OSTI)

This invention relates to a floating seal system for rotary devices to reduce gas leakage around the rotary device in a duct and across the face of the rotary device to an adjacent duct. The peripheral seal bodies are made of resilient material having a generally U-shaped cross section wherein one of the legs is secured to a support member and the other of the legs forms a contacting seal against the rotary device. The legs of the peripheral seal form an extended angle of intersection of about 10[degree] to about 30[degree] in the unloaded condition to provide even sealing forces around the periphery of the rotary device. The peripheral seal extends around the periphery of the support member except where intersected by radial seals which reduce gas leakage across the face of the rotary device and between adjacent duct portions. The radial seal assembly is fabricated from channel bars, the smaller channel bar being secured to the divider of the support member and a larger inverted rigid floating channel bar having its legs freely movable over the legs of the smaller channel bar forming therewith a tubular channel. A resilient flexible tube is positioned within the tubular channel for substantially its full length to reduce gas leakage across the tubular channel. A spacer extends beyond the face of the floating channel near each end of the floating channel a distance to provide desired clearance between the floating channel and the face of the rotary device. 5 figs.

Banasiuk, H.A.

1983-08-23T23:59:59.000Z

69

Enclosed rotary disc air pulser  

DOE Patents (OSTI)

An enclosed rotary disc air pulser for use with a solvent extraction pulse olumn includes a housing having inlet, exhaust and pulse leg ports, a shaft mounted in the housing and adapted for axial rotation therein, first and second disc members secured to the shaft within the housing in spaced relation to each other to define a chamber therebetween, the chamber being in communication with the pulse leg port, the first disc member located adjacent the inlet port, the second disc member being located adjacent the exhaust port, each disc member having a milled out portion, the disc members positioned on the shaft so that as the shaft rotates, the milled out portions permit alternative cyclical communication between the inlet port and the chamber and the exhaust port and the chamber.

Olson, A. L. (Idaho Falls, ID); Batcheller, Tom A. (Idaho Falls, ID); Rindfleisch, J. A. (Arco, ID); Morgan, John M. (Arco, ID)

1989-01-01T23:59:59.000Z

70

Enclosed rotary disc air pulser  

DOE Patents (OSTI)

This invention is comprised of an enclosed rotary disc air pulser for use with a solvent extraction pulse column includes a housing having inlet, exhaust and pulse leg ports, a shaft mounted in the housing and adapted for axial rotation therein, first and second disc members secured to the shaft within the housing in spaced relation to each other to define a chamber there between, the chamber being in communication with the pulse leg port, and first disc member located adjacent the inlet port, the second disc member being located adjacent the exhaust port, each disc member having a milled out portion, the disc members positioned on the shaft so that as the shaft rotates, the milled out portions permit alternative cyclical communication between the inlet port and the chamber and the exhaust port and chamber. 5 figs.

Olson, A.L.; Batcheller, T.A.; Rindfleisch, J.A.; Morgan, J.M.

1988-08-12T23:59:59.000Z

71

Hoisting and Rigging: Pre-use Inspection Criteria for Below-the-Hook Lifting Devices, Slings, and Rigging  

E-Print Network (OSTI)

, and Rigging Hardware and Accessories URL: http://www-group.slac.stanford.edu/esh/eshmanual/references/hoistingHoisting and Rigging: Pre-use Inspection Criteria for Below-the-Hook Lifting Devices, Slings Department: Field Safety and Building Inspection Program: Hoisting and Rigging Authority: ESH Manual, Chapter

Wechsler, Risa H.

72

Experimental Results on Advanced Rotary Desiccant Dehumidifiers  

E-Print Network (OSTI)

The Solar Energy Research Institute (SERI) has developed the Cyclic Test Facility (CTF) to develop and validate analytical methods for evaluating and predicting the performance of advanced rotary dehumidifiers. This paper describes the CTF, the dehumidifiers tested at the CTF, and the analytical methods used. The results reported provide an engineering data base and a design tool for evaluating rotary dehumidifiers for desiccant cooling applications.

Barathan, D.; Parsons, J. M.; MaClaine-Cross, I.

1986-01-01T23:59:59.000Z

73

Experimental results on advanced rotary desiccant dehumidifiers  

DOE Green Energy (OSTI)

The Solar Energy Research Institute (SERI) has developed the Cyclic Test Facility (CTF) to develop and validate analytical methods for evaluating and predicting the performance of advanced rotary dehumidifiers. This paper describes the CTF, the dehumidifiers tested at the CTF, and the analytical methods used. The results reported provide an engineering data base and a design tool for evaluating rotary dehumidifiers for desiccant cooling applications.

Bharathan, D.; Parsons, J.; Maclaine-cross, I.

1986-08-01T23:59:59.000Z

74

Coal desulfurization in a rotary kiln combustor  

Science Conference Proceedings (OSTI)

The purpose of this project was to demonstrate the combustion of coal and coal wastes in a rotary kiln reactor with limestone addition for sulfur control. The rationale for the project was the perception that rotary systems could bring several advantages to combustion of these fuels, and may thus offer an alternative to fluid-bed boilers. Towards this end, an existing wood pyrolysis kiln (the Humphrey Charcoal kiln) was to be suitably refurbished and retrofitted with a specially designed version of a patented air distributor provided by Universal Energy, Inc. (UEI). As the project progressed beyond the initial stages, a number of issues were raised regarding the feasibility and the possible advantages of burning coals in a rotary kiln combustor and, in particular, the suitability of the Humphrey Charcoal kiln as a combustor. Instead, an opportunity arose to conduct combustion tests in the PEDCO Rotary Cascading-Bed Boiler (RCBB) commercial demonstration unit at the North American Rayon CO. (NARCO) in Elizabethton, TN. The tests focused on anthracite culm and had two objectives: (a) determine the feasibility of burning anthracite culms in a rotary kiln boiler and (b) obtain input for any further work involving the Humphrey Charcoal kiln combustor. A number of tests were conducted at the PEDCO unit. The last one was conducted on anthracite culm procured directly from the feed bin of a commercial circulating fluid-bed boiler. The results were disappointing; it was difficult to maintain sustained combustion even when large quantities of supplemental fuel were used. Combustion efficiency was poor, around 60 percent. The results suggest that the rotary kiln boiler, as designed, is ill-suited with respect to low-grade, hard to burn solid fuels, such as anthracite culm. Indeed, data from combustion of bituminous coal in the PEDCO unit suggest that with respect to coal in general, the rotary kiln boiler appears inferior to the circulating fluid bed boiler.

Cobb, J.T. Jr.

1992-09-11T23:59:59.000Z

75

Surveillance Guide - CPS 8.1 Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HOISTING AND RIGGING HOISTING AND RIGGING 1.0 Objective The objective of this surveillance is to examine hoisting and rigging operations to ensure that safe equipment and work practices are being used. The surveillance includes verification that hoisting and rigging work is performed in accordance with DOE requirements and best practices. 2.0 References 2.1 DOE O 440.1A, Worker Protection Management For Doe Federal And Contractor Employees 2.2 DOE-RL-92-36, Hanford Site Hoisting and Rigging Manual NOTE The DOE Hoisting and Rigging Manual should be used as the primary reference for this surveillance. 1 3.0 Requirements Implemented This surveillance is conducted to implement the RL Functions, Responsibilities, and Authorities Manual (FRAM) item No. 2504. 4.0 Surveillance Activities

76

MHK Technologies/Ocean Energy Rig | Open Energy Information  

Open Energy Info (EERE)

Rig Rig < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Ocean Energy Rig.jpg Technology Profile Primary Organization Free Flow 69 Technology Resource Click here Current Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description The Ocean Energy Rig is a hybrid concept harnessing tidal stream with increased velocity from venturi system wave and wind power The rig also uses solar panels to power computers and warning lights Other unique features include a water ballasting system with automatic self levelling and wave ramps to maximize FreeFlow 69 s new wave power device It is envisaged that the Ocean Energy Rig would be assembled and maintained in dry docks and would be towed out into position before being semi submerged and anchored for operation Power output of the production model would be at least 10MW

77

NETL: News Release - DOE-Funded 'Microhole' Drilling Rig Demonstrated...  

NLE Websites -- All DOE Office Websites (Extended Search)

Rig Demonstrated Successfully in Midcontinent New Technology Initiative Slashes Drilling Costs, Benefits Environment, Energy Security WASHINGTON, DC - A U.S. Department of...

78

Optimization Online - Scheduling Workover Rigs for Onshore Oil ...  

E-Print Network (OSTI)

Oct 12, 2003 ... Scheduling Workover Rigs for Onshore Oil Production. Dario Aloise (dario ***at** * dimap.ufrn.br) Daniel Aloise (aloise ***at*** inf.puc-rio.br)

79

Field Demonstraton of Existing Microhole Coiled Tubing Rig (MCTR) Technology  

SciTech Connect

The performance of an advanced Microhole Coiled Tubing Rig (MCTR) has been measured in the field during the drilling of 25 test wells in the Niobrara formation of Western Kansas and Eastern Colorado. The coiled tubing (CT) rig designed, built and operated by Advanced Drilling Technologies (ADT), was documented in its performance by GTI staff in the course of drilling wells ranging in depth from 500 to nearly 3,000 feet. Access to well sites in the Niobrara for documenting CT rig performance was provided by Rosewood Resources of Arlington, VA. The ADT CT rig was selected for field performance evaluation because it is one of the most advanced commercial CT rig designs that demonstrate a high degree of process integration and ease of set-up and operation. Employing an information collection protocol, data was collected from the ADT CT rig during 25 drilling events that encompassed a wide range of depths and drilling conditions in the Niobrara. Information collected included time-function data, selected parametric information indicating CT rig operational conditions, staffing levels, and field observations of the CT rig in each phase of operation, from rig up to rig down. The data obtained in this field evaluation indicates that the ADT CT rig exhibited excellent performance in the drilling and completion of more than 25 wells in the Niobrara under varied drilling depths and formation conditions. In the majority of the 25 project well drilling events, ROP values ranged between 300 and 620 feet per hour. For all but the lowest 2 wells, ROP values averaged approximately 400 feet per hour, representing an excellent drilling capability. Most wells of depths between 500 and 2,000 feet were drilled at a total functional rig time of less than 16 hours; for wells as deep at 2,500 to 3,000 feet, the total rig time for the CT unit is usually well under one day. About 40-55 percent of the functional rig time is divided evenly between drilling and casing/cementing. The balance of time is divided among the remaining four functions of rig up/rig down, logging, lay down bottomhole assembly, and pick up bottomhole assembly. Observations made during all phases of CT rig operation at each of the project well installations have verified a number of characteristics of the technology that represent advantages that can produce significant savings of 25-35 percent per well. Attributes of the CT rig performance include: (1) Excellent hole quality with hole deviation amounting to 1-2 degrees; (2) Reduced need for auxiliary equipment; (3) Efficient rig mobilization requiring only four trailers; (4) Capability of ''Zero Discharge'' operation; (5) Improved safety; and, (6) Measurement while drilling capability. In addition, commercial cost data indicates that the CT rig reduces drilling costs by 25 to 35% compared to conventional drilling technology. Widespread commercial use of the Microhole Coiled Tubing technology in the United States for onshore Lower-48 drilling has the potential of achieving substantially positive impacts in terms of savings to the industry and resource expansion. Successfully commercialized Microhole CT Rig Technology is projected to achieve cumulative savings in Lower-48 onshore drilling expenditures of approximately 6.8 billion dollars by 2025. The reduced cost of CT microhole drilling is projected to enable the development of gas resources that would not have been economic with conventional methods. Because of the reduced cost of drilling achieved with CT rig technology, it is estimated that an additional 22 Tcf of gas resource will become economic to develop. In the future, the Microhole Coiled Tubing Rig represents an important platform for the continued improvement of drilling that draws on a new generation of various technologies to achieve goals of improved drilling cost and reduced impact to the environment.

Kent Perry; Samih Batarseh; Sheriff Gowelly; Thomas Hayes

2006-05-09T23:59:59.000Z

80

Rig upkeep vital in the downturn  

Science Conference Proceedings (OSTI)

As operations came to a close in 1982, many oil and gas contractors were facing the door of no return - subsequent years worsened matters. Drilling and workover units were returned to the lender and left stacked on and off location. Lending institutions began to weaken and, in some cases, collapse. However, many of the contractors with time and grade in providing contract drilling or workover services have had no desires or options other than to continue to operate in a downward spiraling market, much as they had done in the 50s and 60s. Operating under these circumstances requires a lot less flare and flame, and careful rearrangement of financial obligations. Contractors with equipment overloads reduced inventories and stacked the leftovers. This article shows that stacking or immobilizing a modern drilling rig or workover unit can be achieved economically. A sound preventive maintenance schedule can put the equipment on the stand-by board-ready to work. Several articles have been written on the ''new way to stack rigs.'' Most of these are simply a sensible realistic approach to maintaining a corporation's assets until they can be returned to the work force.

Leabo, J.H.

1987-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Design and construction of rigs for studying surface condensation and creating anodized metal oxide surfaces  

E-Print Network (OSTI)

This thesis details the design and construction of a rig for studying surface condensation and a rig for creating anodized metal oxides (AMOs). The condensation rig characterizes condensation for different surfaces; this ...

Sun, Wei-Yang

2011-01-01T23:59:59.000Z

82

C:\Documents and Settings\jhr\My Documents\C_drive\RIGS\users 2013\rigs_usersApril2013.vp  

Gasoline and Diesel Fuel Update (EIA)

23 23 Reserves Information Gathering System (RIGS) User's Guide Version 2013 For Report Year 2012 Energy Information Administration U.S. Department of Energy April 2013 Form EIA-23 Reserves Information Gathering System (RIGS) User's Guide April 2013 EIA-23 Reserves Information Gathering System (RIGS) User's Guide Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Hardware / Software Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Installing the RIGS Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation Error Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Using the EIA-23 Reserves Information Gathering System (RIGS) System . . . . . . . . . . . . . . . . . 4 Initial Data Import from Last Year's RIGS Submission File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 The RIGS Main Menu Screen.

83

Advanced Hot Section Materials and Coatings Test Rig  

SciTech Connect

The Hyperbaric Advanced Hot Section Materials & Coating Test Rig program provides design and implementation of a laboratory rig capable of simulating the hot gas path conditions of coal-gas fired industrial gas turbine engines. The principal activities during this reporting period were the continuation of test section detail design and developing specifications for auxiliary systems and facilities.

Dan Davies

2004-10-30T23:59:59.000Z

84

Development of a portable grain mass flow sensor test rig  

Science Conference Proceedings (OSTI)

A portable grain mass flow sensor test rig was built to measure the accuracy of a mass flow sensor with dual use in the field as well as in the lab. Concurrently, a synchronization method was developed that employs GPS timing data to synchronize the ... Keywords: Mass flow sensor, Test rig, Yield monitor accuracy, Yield monitor error

M. Loghavi; R. Ehsani; R. Reeder

2008-05-01T23:59:59.000Z

85

CRAD, Hoisting & Rigging Assessment Plan | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hoisting & Rigging Assessment Plan Hoisting & Rigging Assessment Plan CRAD, Hoisting & Rigging Assessment Plan Performance Objective: To determine that hoisting and rigging operations are conducted according to "industry best standards" for increasing equipment reliability while assuring worker safety, and to verify issues being addressed in BN Hoisting assessment. Criteria: Lifts are identified and categorized appropriately for scheduled maintenance. DOE-STD-1090-2001 An integrated process ensures safety issues are identified and controls established. DOE-STD-1090-2001 Personnel operating and maintaining the hoisting equipment are trained; they understand their roles and responsibilities. DOE-STD-1090-2001 Maintenance conducts safety inspections of hoisting and rigging equipment on a scheduled basis, certifying that safe operations are in

86

Advanced Hot Section Materials and Coatings Test Rig  

DOE Green Energy (OSTI)

Phase I of the Hyperbaric Advanced Hot Section Materials & Coating Test Rig Program has been successfully completed. Florida Turbine Technologies has designed and planned the implementation of a laboratory rig capable of simulating the hot gas path conditions of coal gas fired industrial gas turbine engines. Potential uses of this rig include investigations into environmental attack of turbine materials and coatings exposed to syngas, erosion, and thermal-mechanical fatigue. The principle activities during Phase 1 of this project included providing several conceptual designs for the test section, evaluating various syngas-fueled rig combustor concepts, comparing the various test section concepts and then selecting a configuration for detail design. Conceptual definition and requirements of auxiliary systems and facilities were also prepared. Implementation planning also progressed, with schedules prepared and future project milestones defined. The results of these tasks continue to show rig feasibility, both technically and economically.

Dan Davis

2006-09-30T23:59:59.000Z

87

Hoisting & Rigging ISMS Assessment Form  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Objective: Assess the institutional and department/division hoisting and Objective: Assess the institutional and department/division hoisting and rigging (including forklift, overhead cranes small hoists, and mobile cranes) requirements, policies, procedures, and work practices for both professional and incidental activities. Review the roles and responsibilities of line managers, support personnel and workers who are involved in these activities as well as the adequacy of compliance with institutional and/or Department/Division qualifications, training requirements, and inspection requirements. Assess the laboratory's process for understanding the causes and development of effective corrective actions for incidents/accidents. Review the roles and responsibilities of line managers, support personnel and workers who are involved in the

88

Hoisting & Rigging ISMS Assessment Form  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Objective: Assess the institutional and department/division hoisting and Objective: Assess the institutional and department/division hoisting and rigging (including forklift, overhead cranes small hoists, and mobile cranes) requirements, policies, procedures, and work practices for both professional and incidental activities. Review the roles and responsibilities of line managers, support personnel and workers who are involved in these activities as well as the adequacy of compliance with institutional and/or Department/Division qualifications, training requirements, and inspection requirements. Assess the laboratory's process for understanding the causes and development of effective corrective actions for incidents/accidents. Review the roles and responsibilities of line managers, support personnel and workers who are involved in the

89

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

11-i Chapter 11 11-i Chapter 11 Wire Rope and Slings CHAPTER 11 WIRE ROPE AND SLINGS This chapter provides requirements for the fabrication and use of wire rope and slings used in hoisting and rigging. 11.1 GENERAL ...............................................................................................................................11-1 11.2 WIRE ROPE ............................................................................................................................11-4 11.2.1 Wire-Rope Lays.........................................................................................................11-4 11.2.2 Wire-Rope Cores .......................................................................................................11-4 11.2.3 Wire Rope for General Purposes

90

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 5 HOSTILE ENVIRONMENTS 5-i Chapter 5 Hostile Environments This chapter describes provisions for hoisting and rigging operations in hostile work environments. 5.1 GENERAL................................................................................................................................5-1 5.2 HOSTILE ENVIRONMENT PLAN ......................................................................................5-2 5.2.1 Marking and Posting ....................................................................................................5-2 5.2.2 Inspection and Testing .................................................................................................5-2 EXHIBIT I Hostile Environment Plan ............................................................................................5-3

91

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 5 HOSTILE ENVIRONMENTS 5-i Chapter 5 Hostile Environments This chapter describes provisions for hoisting and rigging operations in hostile work environments. 5.1 GENERAL ................................................................................................................................5-1 5.2 HOSTILE ENVIRONMENT PLAN ......................................................................................5-2 5.2.1 Marking and Posting ....................................................................................................5-2 5.2.2 Inspection and Testing .................................................................................................5-2 EXHIBIT I Hostile Environment Plan ............................................................................................5-3

92

Compact fast analyzer of rotary cuvette type  

DOE Patents (OSTI)

A compact fast analyzer of the rotary cuvette type is provided for simultaneously determining concentrations in a multiplicity of discrete samples using either absorbance or fluorescence measurement techniques. A rigid, generally rectangular frame defines optical passageways for the absorbance and fluorescence measurement systems. The frame also serves as a mounting structure for various optical components as well as for the cuvette rotor mount and drive system. A single light source and photodetector are used in making both absorbance and fluorescence measurements. Rotor removal and insertion are facilitated by a swing-out drive motor and rotor mount. BACKGROUND OF THE INVENTION The invention relates generally to concentration measuring instruments and more specifically to a compact fast analyzer of the rotary cuvette type which is suitable for making either absorbance or fluorescence measurements. It was made in the course of, or under, a contract with the U.S. Atomic Energy Commission.

Thacker, Louis H. (Knoxville, TN)

1976-01-01T23:59:59.000Z

93

Rotary Mode Core Sample System availability improvement  

SciTech Connect

The Rotary Mode Core Sample System (RMCSS) is used to obtain stratified samples of the waste deposits in single-shell and double-shell waste tanks at the Hanford Site. The samples are used to characterize the waste in support of ongoing and future waste remediation efforts. Four sampling trucks have been developed to obtain these samples. Truck I was the first in operation and is currently being used to obtain samples where the push mode is appropriate (i.e., no rotation of drill). Truck 2 is similar to truck 1, except for added safety features, and is in operation to obtain samples using either a push mode or rotary drill mode. Trucks 3 and 4 are now being fabricated to be essentially identical to truck 2.

Jenkins, W.W.; Bennett, K.L.; Potter, J.D. [Westinghouse Hanford Co., Richland, WA (United States); Cross, B.T.; Burkes, J.M.; Rogers, A.C. [Southwest Research Institute (United States)

1995-02-28T23:59:59.000Z

94

High Pressure Rotary Shaft Sealing Mechanism  

DOE Patents (OSTI)

A laterally translatable pressure staged rotary shaft sealing mechanism having a seal housing with a shaft passage therein being exposed to a fluid pressure P1 and with a rotary shaft being located within the shaft passage. At least one annular laterally translatable seal carrier is provided. First and second annular resilient sealing elements are supported in axially spaced relation by the annular seal carriers and have sealing relation with the rotary shaft. The seal housing and at least one seal carrier define a first pressure staging chamber exposed to the first annular resilient sealing element and a second pressure staging chamber located between and exposed to the first and second annular resilient sealing elements. A first fluid is circulated to the first pressure chamber at a pressure P1, and a second staging pressure fluid is circulated to the second pressure chamber at a fraction of pressure P1 to achieve pressure staging, cooling of the seals. Seal placement provides hydraulic force balancing of the annular seal carriers.

Dietle, Lannie (Sugar Land, TX); Gobeli, Jeffrey D. (Houston, TX)

2001-05-08T23:59:59.000Z

95

Coal desulfurization in a rotary kiln combustor  

Science Conference Proceedings (OSTI)

BCR National Laboratory (BCRNL) has initiated a project aimed at evaluating the technical and economic feasibility of using a rotary kiln, suitably modified, to burn Pennsylvania anthracite wastes, co-fired with high-sulfur bituminous coal. Limestone will be injected into the kiln for sulfur control, to determine whether high sulfur capture levels can be achieved with high sorbent utilization. The principal objectives of this work are: (1) to prove the feasibility of burning anthracite refuse, with co-firing of high-sulfur bituminous coal and with limestone injection for sulfur emissions control, in a rotary kiln fitted with a Universal Energy International (UEI) air injector system; (2) to determine the emissions levels of SO{sub x} and NO{sub x} and specifically to identify the Ca/S ratios that are required to meet New Source Performance Standards; (3) to evaluate the technical and economic merits of a commercial rotary kiln combustor in comparison to fluidized bed combustors; and, (4) to ascertain the need for further work, including additional combustion tests, prior to commercial application, and to recommend accordingly a detailed program towards this end.

Cobb, J.T. Jr.

1990-08-15T23:59:59.000Z

96

Relativistic shock waves in viscous gluon matter  

E-Print Network (OSTI)

We solve the relativistic Riemann problem in viscous gluon matter employing a microscopic parton cascade. We demonstrate the transition from ideal to viscous shock waves by varying the shear viscosity to entropy density ratio $\\eta/s$ from zero to infinity. We show that an $\\eta/s$ ratio larger than 0.2 prevents the development of well-defined shock waves on timescales typical for ultrarelativistic heavy-ion collisions. Comparisons with viscous hydrodynamic calculations confirm our findings.

I. Bouras; E. Molnar; H. Niemi; Z. Xu; A. El; O. Fochler; C. Greiner; D. H. Rischke

2009-02-11T23:59:59.000Z

97

EIA-23L Reserves Information Gathering System (RIGS)  

Gasoline and Diesel Fuel Update (EIA)

EIA-23L Reserves Information Gathering System (RIGS) EIA-23L Reserves Information Gathering System (RIGS) Released: April 16, 2013 Background The Form EIA-23L, "Annual Survey of Domestic Oil and Gas Reserves, " is used to collect data on reserves of crude oil, natural gas, and natural gas liquids. These data are used to develop national and regional estimates of proved reserves of domestic crude oil, natural gas, and natural gas liquids, and to facilitate national energy policy decisions. Reporting on the Form EIA-23L is mandatory. Reserves Information Gathering System The Form EIA-23L Reserves Information Gathering System (RIGS), provides respondents with an efficient and effective means for filing the form using a personal computer (PC). Hardware / Software Requirements The minimum hardware requirements needed to install and use RIGS are:

98

Hoisting & Rigging Assessment Form | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hoisting & Rigging Assessment Form Hoisting & Rigging Assessment Form Hoisting & Rigging Assessment Form Assess the institutional and department/division hoisting and rigging (including forklift, overhead cranes small hoists, and mobile cranes) requirements, policies, procedures, and work practices for both professional and incidental activities. Review the roles and responsibilities of line managers, support personnel and workers who are involved in these activities as well as the adequacy of compliance with institutional and/or Department/Division qualifications, training requirements, and inspection requirements. Assess the laboratory's process for understanding the causes and development of effective corrective actions for incidents/accidents. Review the roles and responsibilities of line managers, support personnel and workers who are

99

Guidelines for Using Synthetic Slings for Lifting and Rigging  

Science Conference Proceedings (OSTI)

"Guidelines for Using Synthetic Slings for Lifting and Rigging" provides nuclear and fossil maintenance personnel with information on the use of synthetic slings. This information will assist personnel in the identification, protection, and inspection of synthetic slings.

2003-02-10T23:59:59.000Z

100

ADVANCED HOT SECTION MATERIALS AND COATINGS TEST RIG  

SciTech Connect

The Hyperbaric Advanced Hot Section Materials & Coating Test Rig program initiated this quarter, provides design and implementation of a laboratory rig capable of simulating the hot gas path conditions of coal-gas fired industrial gas turbine engines. The principle activity during this first reporting period were preparing for and conducting a project kick-off meeting, working through plans for the project implementation, and beginning the conceptual design of the test section.

Scott Reome; Dan Davies

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

APPENDIX A PROCUREMENT GUIDELINES A-1 Appendix A Procurement Guidelines This appendix provides reference guidance in preparing purchase requisitions for hoisting and rigging materials and equipment. Nationally recognized standards and specifications are referenced for listed items. However, caution should be used prior to procurement of special items in order to verify appropriate specification or standard reference and requirements. Some specific requirements listed in this appendix are more restrictive than consensus standard requirements, but are recommended to ensure materials of adequate quality and workmanship are provided. Quality receipt inspections should be provided for all received materials in order to verify compliance of all

102

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

APPENDIX A APPENDIX A PROCUREMENT GUIDELINES A-i Appendix A Procurement Guidelines This appendix provides reference guidance in preparing purchase requisitions for hoisting and rigging materials and equipment. Nationally recognized standards and specifications are referenced for listed items. However, caution should be used prior to procurement of special items in order to verify appropriate specification or standard reference and requirements. Some specific requirements listed in this appendix are more restrictive than consensus standard requirements, but are recommended to ensure materials of adequate quality and workmanship are provided. Quality receipt inspections should be provided for all received materials in order to verify compliance of all

103

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TERMINOLOGY AND DEFINITIONS 1-1 Chapter 1 Terminology and Definitions The following are specialized terms commonly used when discussing hoisting and rigging operations. Many may not be used in this standard, but are included for general information. The terms are arranged in alphabetical order. Illustrations are included for clarity. ABRASION: Surface wear. ACCELERATION STRESS: Additional stress imposed due to increasing load velocity. ALTERNATE LAY: Lay of wire rope in which the strands are alternately regular and lang lay. ANSI: American National Standards Institute. APPOINTED: Assigned specific responsibilities by the employer or the employer's representative. AREA, METALLIC: Sum of the cross- sectional areas of individual wires in a wire rope

104

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TERMINOLOGY AND DEFINITIONS 1-1 Chapter 1 Terminology and Definitions The following are specialized terms commonly used when discussing hoisting and rigging operations. Many may not be used in this standard, but are included for general information. The terms are arranged in alphabetical order. Illustrations are included for clarity. ABRASION: Surface wear. ACCELERATION STRESS: Additional stress imposed due to increasing load velocity. ALTERNATE LAY: Lay of wire rope in which the strands are alternately regular and lang lay. ANSI: American National Standards Institute. APPOINTED: Assigned specific responsibilities by the employer or the employer's representative. AREA, METALLIC: Sum of the cross- sectional areas of individual wires in a wire rope

105

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on...

106

A unidirectional rotary solenoid as applied to stronglinks  

Science Conference Proceedings (OSTI)

This paper describes the design goals and results of an advanced development stronglink project with special emphasis on a new rotary solenoid concept. 10 figs.

Kenderdine, E.W.

1988-01-01T23:59:59.000Z

107

Structural Insights into RNA Recognition by RIG-I  

Science Conference Proceedings (OSTI)

Intracellular RIG-I-like receptors (RLRs, including RIG-I, MDA-5, and LGP2) recognize viral RNAs as pathogen-associated molecular patterns (PAMPs) and initiate an antiviral immune response. To understand the molecular basis of this process, we determined the crystal structure of RIG-I in complex with double-stranded RNA (dsRNA). The dsRNA is sheathed within a network of protein domains that include a conserved 'helicase' domain (regions HEL1 and HEL2), a specialized insertion domain (HEL2i), and a C-terminal regulatory domain (CTD). A V-shaped pincer connects HEL2 and the CTD by gripping an {alpha}-helical shaft that extends from HEL1. In this way, the pincer coordinates functions of all the domains and couples RNA binding with ATP hydrolysis. RIG-I falls within the Dicer-RIG-I clade of the superfamily 2 helicases, and this structure reveals complex interplay between motor domains, accessory mechanical domains, and RNA that has implications for understanding the nanomechanical function of this protein family and other ATPases more broadly.

Luo, Dahai; Ding, Steve C.; Vela, Adriana; Kohlway, Andrew; Lindenbach, Brett D.; Pyle, Anna Marie (Yale)

2011-10-27T23:59:59.000Z

108

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4 4 BELOW-THE-HOOK LIFTING DEVICES 14-i Chapter 14 Below-the-Hook Lifting Devices This chapter provides the requirements for below-the-hook lifting devices used in hoisting and rigging, such as spreader bars, lifting yokes, and lift fixtures. This section implements the requirements of ASME B30.20, "Below-the-Hook Lifting Devices." NOTE: Special lifting devices for shipping containers weighing 10,000 lb or more that are used for radioactive materials may be governed by ANSI N14.6 ["Standard for Special Lifting Devices for Shipping Containers Weighing 10,000 Pounds (4,500 kg) or More for Nuclear Materials."] 14.1 GENERAL ...............................................................................................................................14-1

109

Coal desulfurization in a rotary kiln combustor  

Science Conference Proceedings (OSTI)

Several issues that could have an impact on the capability to burn anthracite culm in a rotary bed boiler were identified; specifically, questions were raised concerning the specifications of the anthracite culm itself and some relating to the equipment. The anthracite culm delivered was wet, (with more than 10 percent moisture), and coarser than feed material for fluidized boilers. It was felt that using finer fuel, ensuring that it is largely dry, would aid the combustion of anthracite culm. It also appeared that if provisions were made for more efficient internal and external recycle of ash, this would also enhance the combustion of this fuel. Accordingly, the decision was made to conduct an additional campaign of tests that would incorporate these changes. The tests, conducted on July 15 and 16, 1991, involved an anthracite culm that was, in fact, obtained from a fluidized bed a heating value of 3,000 Btu/lb and came with a top size of 1/4-inch. Despite these changes, sustained combustion could not be achieved without the use of large quantities of supplemental fuel. Based on these tests, we tend to conclude that the rotary kiln is ill suited for the combustion of hard-to-burn, low-grade solid fuels like anthracite culm.

Cobb, J.T. Jr.

1991-08-29T23:59:59.000Z

110

Natural Gas for the Long Haul (Big Rigs Go Green)  

NLE Websites -- All DOE Office Websites (Extended Search)

the Long Haul (Big Rigs Go Green) the Long Haul (Big Rigs Go Green) JOHN DAVIS: No one has been hit harder by rising fuel prices than America's long-haul commercial truckers. A big rig can easily burn 20,000 gallons of fuel a year, and with diesel prices projected to keep rising, this not only pinches the trucker's bottom line, but that extra cost is passed on to American consumers. Meanwhile, natural gas prices have remained stable and are forecast to stay that way for years to come. Up to now, demand for natural gas as a transportation fuel has been mostly for compressed natural gas used by light and medium-duty vehicles. City buses, refuse haulers, utilities, and

111

Inventory management of steel plates at an oil rig construction company  

E-Print Network (OSTI)

Keppel Fels produces make-to-order oil exploration rigs for the global market. Each rig requires close to 6000 metric tons of steel in the course of its production. Optimal management of this steel is very critical in this ...

Tan, Chien Yung

2006-01-01T23:59:59.000Z

112

Diesel Rig Mechanical Peaking System Based on Flywheel Storage Technolgy  

Science Conference Proceedings (OSTI)

Flywheel energy storage technology is an emerging energy storage technology, there is a great development in recent years promising energy storage technology, with a large energy storage, high power, no pollution, use of broad, simple maintenance, enabling ... Keywords: Flywheel energy storage technology, mechanical peaking, diesel rig, peak motor

Shuguang Liu, Jia Wang

2012-07-01T23:59:59.000Z

113

Mixed Stream Test Rig Winter FY-2011 Report  

SciTech Connect

This report describes the data and analysis of the initial testing campaign of the Mixed Stream Test Rig (MISTER) at Idaho National Laboratory (INL). It describes the test specimen selection, physical configuration of the test equipment, operations methodology, and data and analysis of specimens exposed in two environments designed to represent those expected for high temperature steam electrolysis (HTSE).

Chalres Park; Tedd Lister; Kevin DeWall

2011-04-01T23:59:59.000Z

114

Planning and scheduling a fleet of rigs using simulation-optimization  

Science Conference Proceedings (OSTI)

Some of the most important and expensive activities in the oil field development and production phases relate to using rigs. These can be used for drilling wells, or for maintenance activities. As rigs are usually scarce compared to the number of wells ... Keywords: Planning, Rigs, Scheduling, Simulation-optimization

Hugo ViníCius Bassi; VirgíLio Jose Martins Ferreira Filho; Laura Bahiense

2012-12-01T23:59:59.000Z

115

Results of the 1000 Hour Rotary Microfilter Endurance Test  

Stellite on Nitronic 60. 8 SRNL-L3100-2010-00229 Rotary Microfilter 1000 Hour Test Flux Data for 1000 Hour Test 0 1 2 3 4 5 6 0 100 200 300 400 500 ...

116

TESTING OF THE DUAL ROTARY FILTER SYSTEM  

SciTech Connect

The Savannah River National Laboratory (SRNL) installed and tested two hydraulically connected SpinTek rotary microfilter (RMF) units to determine the behavior of a multiple filter system. Both units were successfully controlled by a control scheme written in DELTA-V architecture by Savannah River Remediation (SRR) Process Control Engineering personnel. The control system was tuned to provide satisfactory response to changing conditions during the operation of the multi-filter system. Stability was maintained through the startup and shutdown of one of the filter units while the second was still in operation. The installation configuration originally proposed by the Small Colum Ion Exchange (SCIX) project of independent filter and motor mountings may be susceptible to vibration. Significant stiffening of the filter and motor mounts was required to minimize the vibration. Alignment of the motor to the filter was a challenge in this test configuration. The deployment configuration must be easy to manipulate and allow for fine adjustment. An analysis of the vibration signature of the test system identified critical speeds. Whether it corresponds to the resonance frequency of a rotor radial vibration mode that was excited by rotor unbalance is uncertain based upon the measurements. A relative motion series should be completed on the filter with the final shaft configuration to determine if the resonances exist in the final filter design. The instrumentation selected for deployment, including the concentrate discharge control valve and flow meters, performed well. Automation of the valve control integrated well with the control scheme and when used in concert with the other control variables, allowed automated control of the dual RMF system. The one area of concern with the instrumentation was the condition resulting when the filtrate flow meter operated with less than three gpm. This low flow was at the lower range of performance for the flow meter. This should not be an issue in deployment where the desired flow rate will be within the normal operating range of the meter. Testing demonstrated that the use of a flexible line for the filtrate discharge is highly desired at the outlet of the rotary union to transition to the system piping. Isolating the vibration from the rotary union will significantly improve the lifetime of the seals. Methods to monitor and isolate individual filters should be considered during deployment. The ability to diagnose issues and isolate individual filters would allow isolation prior to failure. Thus, filters may be cleaned or repaired instead of requiring complete replacement if the condition were to continue unnoticed. Isolating the filtrate line of each filter during startup will minimize the premature buildup of solids on the filter disks. Several tests have shown that the method of filter startup can improve performance lifetime of the filters. The installation must factor in an air inlet for the draining of a filter that does not involve a reverse flow through the filter disks. The reverse flow may cause deformation of the disks or may damage other components of the filters themselves.

Herman, D.; Fowley, M.; Stefanko, D.

2011-08-29T23:59:59.000Z

117

Department of Energy Supercomputer Helps Design More Efficient Big Rigs |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Department of Energy Supercomputer Helps Design More Efficient Big Department of Energy Supercomputer Helps Design More Efficient Big Rigs Department of Energy Supercomputer Helps Design More Efficient Big Rigs February 8, 2011 - 12:00am Addthis Washington, DC - BMI Corporation, a company in South Carolina, in partnership with the Department of Energy's Oak Ridge National Laboratory (ORNL) has successfully developed a technology that will make semi trucks more fuel efficient with the potential to save millions of gallons of fuel. Utilizing the nation's most powerful computer, BMI Corp designed a SmartTruck UnderTray System, a set of integrated aerodynamic fairings that improve the aerodynamics of 18-wheeler (Class 8) long-haul trucks. If all 1.3 million Class 8 trucks in the U.S. were configured with these components, companies could achieve annual savings of 1.5 billion gallons

118

Accurate viscous free surfaces for buckling, coiling, and rotating liquids  

Science Conference Proceedings (OSTI)

We present a fully implicit Eulerian technique for simulating free surface viscous liquids which eliminates artifacts in previous approaches, efficiently supports variable viscosity, and allows the simulation of more compelling viscous behaviour than ...

Christopher Batty; Robert Bridson

2008-07-01T23:59:59.000Z

119

Viscous Fingering and Gravity Segregation through Porous Media: Experimental Findings  

Science Conference Proceedings (OSTI)

During downward vertical flow of a viscous solution, the viscous fingering (VF) phenomenon affects miscible displacement of solutes through a soil profile. On the other hand, during horizontal flow, when the liquid residing in a horizontal bed of ...

Farhat Abbas; Derek A. Rose

2010-10-01T23:59:59.000Z

120

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Wednesday, 28 April 2010 00:00 Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Wednesday, 28 April 2010 00:00 Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

122

Microwave lamp with multi-purpose rotary motor  

DOE Patents (OSTI)

In a microwave powered electrodeless lamp, a single rotary motor is used to (a) rotate the bulb and (b) provide rotary motion to a blower or pump means for providing cooling fluid to the magnetron and/or to a forced gas cooler for providing cooling gas to the bulb. The blower may consist of only of an impeller without the usual blower housing. The motor, bulb stem and bulb, or motor, bulb stem, bulb and blower may be formed as an integral unit so as to facilitate replacement. 8 figs.

Ury, M.G.; Turner, B.; Wooten, R.D.

1999-02-02T23:59:59.000Z

123

Microwave lamp with multi-purpose rotary motor  

DOE Patents (OSTI)

In a microwave powered electrodeless lamp, a single rotary motor is used to a) rotate the bulb and b) provide rotary motion to a blower or pump means for providing cooling fluid to the magnetron and/or to a forced gas cooling for providing cooler gas to the bulb. The blower may consist of only of an impeller without the usual blower housing. The motor, bulb stem and bulb, or motor, bulb stem, bulb and blower may be formed as an integral unit so as to facilitate replacement.

Ury, Michael G. (Bethesda, MD); Turner, Brian (Myersville, MD); Wooten, Robert D. (Rockville, MD)

1999-01-01T23:59:59.000Z

124

BACKPRESSURE TESTING OF ROTARY MICROFILTER DISKS  

Science Conference Proceedings (OSTI)

The Savannah River National Laboratory (SRNL), under the Department of Energy (DOE) Office of Environmental Management (EM), is modifying and testing the SpinTek{trademark} rotary microfilter (RMF) for radioactive filtration service in the Department of Energy (DOE) complex. The RMF has been shown to improve filtration throughput when compared to other conventional methods such as cross-flow filtration. A concern with the RMF was that backpressure, or reverse flow through the disk, would damage the filter membranes. Reverse flow might happen as a result of an inadvertent valve alignment during flushing. Testing was completed in the Engineering Development Laboratory (EDL) located in SRNL to study the physical effects of backpressure as well as to determine the maximum allowable back-pressure for RMF disks. The RMF disks tested at the EDL were manufactured by SpinTek{trademark} Filtration and used a Pall Corporation PMM050 filter membrane (0.5 micron nominal pore size) made from 316L stainless steel. Early versions of the RMF disks were made from synthetic materials that were incompatible with caustic solutions and radioactive service as well as being susceptible to delaminating when subjected to backpressure. Figure 1-1 shows the essential components of the RMF; 3 rotating disks and 3 stationary turbulence promoters (or shear elements) are shown. Figure 1-2 show the assembly view of a 25 disk RMF proposed for use at the Savannah River Site (SRS) and at the Hanford Facility. The purpose of the testing discussed in this report was to determine the allowable backpressure for RMF disks as well as study the physical effects of backpressure on RMF disks made with the Pall PMM050 membrane. This was accomplished by pressurizing the disks in the reverse flow direction (backpressure) until the test limit was reached or until membrane failure occurred. Backpressure was applied to the disks with air while submerged in deionized (DI) water. This method provided a visual representation of membrane integrity via bubble flow patterns. Membrane failure was defined as the inability to filter effectively at the nominal filter pore size. Effective filtration was determined by turbidity measurements of filtrate that was produced by applying forward-pressure to the disks while submerged in a representative simulant. The representative simulant was Tank 8F simulated sludge produced for SRNL by Optima Chemical. Two disks were tested. Disk 1 was tested primarily to determine approximate levels of backpressure where membrane failure occurred. These levels were then used to define the strategy for testing the Disk 2; a strategy that would better define and quantify the mode of failure.

Fowley, M.; Herman, D.

2011-04-14T23:59:59.000Z

125

Design, Construction, and Preliminary Validation of the Turbine Reacting Flow Rig.  

E-Print Network (OSTI)

??This thesis presents the design, construction and partial operation of the Turbine Reacting Flow Rig (TuRFR), which is a high temperature turbine vane test facility… (more)

Cramer, Klaron Nathanael

2009-01-01T23:59:59.000Z

126

Rig count in Utica Shale doubles from year ago - Today in ...  

U.S. Energy Information Administration (EIA)

The number of active oil and natural gas rigs in the Appalachian Basin's Utica Shale formation for the last week of October 2012 (ending October 26) ...

127

CPS 8.1 Hoisting and Rigging, 2/25/2000  

Energy.gov (U.S. Department of Energy (DOE))

The objective of this surveillance is to examine hoisting and rigging operations to ensure that safe equipment and work practices are being used.  The surveillance includes verification that...

128

,,,,,"Rig: TOI Discoverer Enterprise"  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Well: OCS-G 32306 002 ST00BP00",,,,"Flow Data" Well: OCS-G 32306 002 ST00BP00",,,,"Flow Data" ,,,,,"Field: Mississippi Canyon 252" ,,,,,"Rig: TOI Discoverer Enterprise" ,,,,,"Choke Manifold",,,,"Rates",,,,,,,,,"Ratio" "Date","Time","Choke A","Choke B","BSW","WHPres","WHTemp","WHDCP","WHDCTemp","Gas Rate","Gas Cum","Uncorrected ","Uncorrected ","Water Rate","Water Cum","Uncorrected ","Uncorrected ","Cumulative Oil ","GOR1","Comments" ,,,,,,,,,,,"Oil Rate","Oil Cum ",,,"Liquid Rate","Liquid Cum","from Cargo "

129

Slant rigs offer big payoffs in shallow drilling  

Science Conference Proceedings (OSTI)

Slant hole drilling technology can result in considerable savings over conventionally drilled deviated holes because mud motors and deviation control with measurement while drilling tools are usually unnecessary. The benefits of using slant hole rigs for development drilling improve after the bit walk tendencies and the correct bottom hole assemblies have been determined for a particular area. This article discusses three recent drilling operations that successfully used slant drilling technology on land-based projects: drilling for heavy oil in Alberta, drilling for gas in Alberta, and drilling a river crossing for a gas pipeline in British Columbia. These examples demonstrate the flexibility of slant drilling technology.

Smith, J. (George E. Failing Co., Enid, OK (US)); Edwards, B. (Sierra Drilling Co., Calgary (CA))

1992-03-30T23:59:59.000Z

130

Chemical Methods for Ugnu Viscous Oils  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemical Methods for Ugnu Viscous Oils Chemical Methods for Ugnu Viscous Oils Project Number: DE-NT0006556 Final Report Period Covered: October, 2008-March, 2012 for U. S. Department of Energy National Energy Technology Laboratory Principal Investigator: Kishore K. Mohanty Department of Petroleum & Geosystems Engineering University of Texas at Austin CPE-3.168, 1 University Station, Mail Code C0300 Austin, Texas 78712 512-471-3077 (phone), 512-471-9605 (fax) mohanty@mail.utexas.edu June 5, 2012 2 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or

131

Thermal radiation from an expanding viscous medium  

E-Print Network (OSTI)

The effects of viscosity on the space time evolution of QGP produced in nuclear collisions at RHIC energies have been studied. The entropy generated due to the viscous motion of the fluid has been taken into account in constraining the initial temperature by the final multiplicity (measured at the freeze-out point). The viscous effects on the photon spectra has been introduced consistently through the evolution dynamics and phase space factors of the particles participating in the production process. We notice a stronger effect on the photon spectra originating from QGP than hadronic matter. A detectable shift is observed in the space-time integrated p_T distribution of photons due to dissipative effects.

Sukanya Mitra; Payal Mohanty; Sourav Sarkar; Jan-e Alam

2011-07-13T23:59:59.000Z

132

Technical and economic evaluation of selected compact drill rigs for drilling 10,000 foot geothermal production wells  

DOE Green Energy (OSTI)

This report summarizes the investigation and evaluation of several {open_quotes}compact{close_quotes} drill rigs which could be used for drilling geothermal production wells. Use of these smaller rigs would save money by reducing mobilization costs, fuel consumption, crew sizes, and environmental impact. Advantages and disadvantages of currently-manufactured rigs are identified, and desirable characteristics for the {open_quotes}ideal{close_quotes} compact rig are defined. The report includes a detailed cost estimate of a specific rig, and an evaluation of the cost/benefit ratio of using this rig. Industry contacts for further information are given.

Huttrer, G.W. [Geothermal Management Company, Inc., Frisco, CO (United States)

1997-11-01T23:59:59.000Z

133

Viscous Glass Sealants for SOFC Applications  

DOE Green Energy (OSTI)

Two series of silicate glasses that contain gallium as the primary critical component have been identified and optimized for viscous sealing of solid oxide fuel cells operating from 650 to 850°C. Both series of glass sealants crystallize partially upon heat treatment and yield multiphase microstructures that allow viscous flow at temperatures as low as 650°C. A fully amorphous sealant was also developed by isolating, synthesizing and testing a silicate glass of the same composition as the remnant glassy phase in one of the two glass series. Of ~40 glasses tested for longer than 500 hours, a set of 5 glasses has been further tested for up to 1000h in air, wet hydrogen, and against both yttria-stabilized zirconia and aluminized stainless steel. In some cases the testing times reached 2000h. The reactivity testing has provided new insight into the effects of Y, Zr, and Al on bulk and surface crystallization in boro-gallio-silicate glasses, and demonstrated that at least 5 of the newly-developed glasses are viable viscous sealants.

Scott Misture

2012-09-30T23:59:59.000Z

134

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

135

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

136

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

137

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

138

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

139

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

NLE Websites -- All DOE Office Websites (Extended Search)

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

140

Micro rotary machine and methods for using same  

SciTech Connect

A micro rotary machine may include a micro actuator and a micro shaft coupled to the micro actuator. The micro shaft comprises a horizontal shaft and is operable to be rotated by the micro actuator. A micro tool is coupled to the micro shaft and is operable to perform work in response to motion of the micro shaft.

Stalford, Harold L. (Norman, OK)

2012-04-17T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

A Testing and Controlling System for the Combustion Test Rig of Gas Turbine Combustor  

Science Conference Proceedings (OSTI)

In this paper, a testing and controlling system is designed for the test rig of gas turbine combustor by using VXi bus and PLC technology. The system is composed of two subsystems: the data acquisition subsystem and the control subsystem. The data acquisition ... Keywords: combustion test rig, VXi bus, PLC control, Modbus agreement, data acquisition

Nihui Xie; Hua Song; Hongzhuan Qiu

2011-10-01T23:59:59.000Z

142

Affine crystal structure on rigged configurations of type $D_{n}^{(1)}$  

Science Conference Proceedings (OSTI)

Extending the work in Schilling (Int. Math. Res. Not. 2006:97376, 2006), we introduce the affine crystal action on rigged configurations which is isomorphic to the Kirillov---Reshetikhin crystal B r,s of type Keywords: Crystal bases, Quantum algebras, Rigged configurations

Masato Okado; Reiho Sakamoto; Anne Schilling

2013-05-01T23:59:59.000Z

143

The Application Research of AC Frequency Conversion Technique in Transmission Control System of Oil Rig  

Science Conference Proceedings (OSTI)

This paper mainly introduced the basic structure and work principle of transmission agent on electric drilling rig, meanwhile the frequency control and parallel operation of motors used in the transmission agent were analyzed and designed. Using parallel ... Keywords: Rig, Transmission, Frequency control, Parallel Operation Control

Ruifan Yang; Yong Peng

2010-03-01T23:59:59.000Z

144

Probabilistic structure matching for visual SLAM with a multi-camera rig  

Science Conference Proceedings (OSTI)

We propose to use a multi-camera rig for simultaneous localization and mapping (SLAM), providing flexibility in sensor placement on mobile robot platforms while exploiting the stronger localization constraints provided by omni-directional sensors. In ... Keywords: Localization, Mapping, Mobile robot, Multi-camera rig, Omni-directional, SFM

Michael Kaess; Frank Dellaert

2010-02-01T23:59:59.000Z

145

EVALUATION OF ALTERNATIVE FILTER MEDIA FOR THE ROTARY MICROFILTER  

SciTech Connect

SRS is currently developing and testing several processes to treat high level radioactive liquid waste. These processes include the Integrated Salt Disposition Process (ISDP), the Salt Waste Processing Facility (SWPF), and the Small Column Ion Exchange Process (SCIX). Each of these processes has a solid-liquid separation process that limits its throughput. SRNL researchers identified and tested the rotary microfilter as a technology to increase solid-liquid separation throughput. The testing showed significant improvement in filter flux with the rotary microfilter over the baseline crossflow filter (i.e., 2.5-6.5X during scoping tests, as much as 10X in actual waste tests, and approximately 3X in pilot-scale tests). SRNL received funding from DOE EM-21, and subsequently DOE EM-31 to develop the rotary microfilter for high level radioactive service. The work has included upgrading the rotary microfilter for radioactive service, testing with simulated SRS waste streams, and testing it with simulated Hanford waste streams. While the filtration rate is better than that obtained during testing of crossflow filters, the authors believe the rotary microfilter throughput can be improved by using a better filter membrane. The rotary microfilter membrane is made of stainless steel (Pall PMM050). Previous testing, funded by DOE EM-21, showed that asymmetric filters composed of a ceramic membrane on top of a stainless steel support produced higher filter flux than 100% stainless steel symmetric filters in crossflow filter tests. In that testing, the Pall Accusep and Graver filters produced 13-21% larger filter flux than the baseline 0.1 {micro}m Mott filter. While the improvement in flux is not as dramatic as the improvement of the rotary filter over a crossflow filter, a 13-21% increase could reduce the lifetime of a 30 year process by 4-6 years, with significant cost savings. Subsequent rotary filter testing showed the Pall PMM050 stainless steel filter membrane produced higher flux than the Mott filter media in bench-scale and pilot-scale testing. The Accusep and Graver filter media were not evaluated in that testing, because they are not available as flat sheets. The Accusep filter was developed at ORNL and licensed to Pall Corporation. This filter has a stainless steel support structure with a zirconium oxide ceramic membrane. The pore size is 0.1 {micro}m absolute. The Graver filter has a stainless steel support structure with a titanium dioxide ceramic membrane. The pore size is 0.07 {micro}m absolute. SRNL and ORNL are working together to develop filter media similar to the Accusep and Graver media, and to test them in a bench-scale filtration apparatus to attempt to improve the throughput of the rotary microfilter. This report describes the effort.

Poirier, M.; Herman, D.; Bhave, R.

2011-09-13T23:59:59.000Z

146

Viscous dark energy and generalized second law of thermodynamics  

E-Print Network (OSTI)

We examine the validity of the generalized second law of thermodynamics in a non-flat universe in the presence of viscous dark energy. At first we assume that the universe filled only with viscous dark energy. Then, we extend our study to the case where there is an interaction between viscous dark energy and pressureless dark matter. We examine the time evolution of the total entropy, including the entropy associated with the apparent horizon and the entropy of the viscous dark energy inside the apparent horizon. Our study show that the generalized second law of thermodynamics is always protected in a universe filled with interacting viscous dark energy and dark matter in a region enclosed by the apparent horizon. Finally, we show that the the generalized second law of thermodynamics is fulfilled for a universe filled with interacting viscous dark energy and dark matter in the sense that we take into account the Casimir effect.

M. R. Setare; A. Sheykhi

2011-03-05T23:59:59.000Z

147

Use power factor correction to cut SCR rig fuel bills  

SciTech Connect

When drilling with SCR-powered drilling rigs, there are specific instances on every well when the kVA capacity of the AC generators prohibits efficient engine loading. It then becomes necessary to run another engine-generator set to provide sufficient kVA to power the load, even though the kW required by the load can be furnished by existing engine(s) on line. The practice of running one more engine than can be fully loaded causes all engines on line to run at a less efficient point on the brake specific fuel consumption curve (BSFC) and therefore costs more in terms of engine hours, fuel and maintenance costs. This article presents a study of the load represented by the mud pump and drawworks along with a graphical representation that shows the effect of these loads on the engine generator system both with and without a power factor correction device.

Logan, R.T.

1983-09-01T23:59:59.000Z

148

Solids transportation model of an industrial rotary dryer  

SciTech Connect

A complete simulation model has been developed for an industrial rotary dryer to account for the heat and mass exchange between the solids and the gas. This simulator is mainly composed of three models: solids transportation model, furnace model, and gas model. The solids transportation model is the modified Cholette-Cloutier model. It consists of a series of interactive reservoirs which are subdivided into an active and dead compartments to account for the characteristic extended tail of the residence time distribution (RTD) curves observed in industrial dryers. To expand the validity of the model, experiments have been performed in an industrial rotary dryer to obtain RTD curves under different mineral concentrate and gas flow rates. This paper describes these experiments and presents the variation of the average residence time and model parameters as function of solids and gas flow rates.

Renaud, M.; Thibault, J.; Trusiak, A.

2000-05-01T23:59:59.000Z

149

Skew and twist resistant hydrodynamic rotary shaft seal  

DOE Patents (OSTI)

A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland. 14 figs.

Dietle, L.; Kalsi, M.S.

1999-02-23T23:59:59.000Z

150

Skew and twist resistant hydrodynamic rotary shaft seal  

DOE Patents (OSTI)

A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland.

Dietle, Lannie (Sugar Land, TX); Kalsi, Manmohan Singh (Houston, TX)

1999-01-01T23:59:59.000Z

151

Rotary union for use with ultrasonic thickness measuring probe  

DOE Patents (OSTI)

A rotary union for rotatably supporting an ultrasonic probe operable to nondestructively measure the thickness of steam generator tubes to determine the amount of corrosion experienced by the tubes includes a stationary body having a bore therethrough and an outlet drain, and a fitting rotatably mounted within the upper end of the body. The fitting has a bore aligned with the bore of the body. An electrical cable positioned within a water supply tube in an annular arrangement passes through the bore of the body and the bore of the fitting. This annular arrangement, in turn, is positioned within a connector element which extends outwardly from the fitting bore and is connected to the ultrasonic probe. An elastomeric lower bushing seals the annular arrangement to the lower end of the rotary union body and an elastomeric upper bushing seals the connector element to the fitting to permit the connector element and the ultrasonic probe connected thereto to rotate with the fitting relative to the body. The lower and upper bushings permit water to be passed through the annular arrangement and into the ultrasonic probe and thereafter discharged between the annular arrangement and the connector element to the outlet drain of the rotary union body. 5 figs.

Nachbar, H.D.

1992-09-15T23:59:59.000Z

152

Evaluation of Alternative Filter Media for the Rotary Microfilter  

SciTech Connect

The Savannah River Site is currently developing and testing several processes to treat high level radioactive liquid waste. Each of these processes has a solid-liquid separation process that limits its throughput. Savannah River National Laboratory researchers identified and tested the rotary microfilter as a technology to increase solid-liquid separation throughput. The authors believe the rotary microfilter throughput can be improved by using a better filter membrane. Previous testing showed that asymmetric filters composed of a ceramic membrane on top of a stainless steel support produced higher filter flux than 100% stainless steel symmetric filters in crossflow filter tests. Savannah River National Laboratory and Oak Ridge National Laboratory are working together to develop asymmetric ceramic ? stainless steel composite filters and asymmetric 100% stainless steel filters to improve the throughput of the rotary microfilter. The Oak Ridge National Laboratory Inorganic Membrane Group fabricated samples of alternative filter membranes. In addition, Savannah River National Laboratory obtained samples of filter membranes from Pall, Porvair, and SpinTek. They tested these samples in a static test cell with feed slurries containing monosodium titanate and simulated sludge.

Poirier, M. R.; Herman, D. T.; Bhave, R.

2011-11-09T23:59:59.000Z

153

A numerical algorithm for viscous incompressible interfacial flows  

Science Conference Proceedings (OSTI)

We present a new algorithm to numerically simulate two-dimensional viscous incompressible flows with moving interfaces. The motion is updated in time by using the backward difference formula through an iterative procedure. At each iteration, the pseudo-spectral ... Keywords: Interfacial motion, Stokes waves, Viscous flows

Jin Wang; Greg Baker

2009-08-01T23:59:59.000Z

154

Further Characterization of New NiTi Wire and Rotary Endodontic ...  

Science Conference Proceedings (OSTI)

Presentation Title, Further Characterization of New NiTi Wire and Rotary ... Higher-resolution transmission electron microscopy examination of M-Wire used to ...

155

Nonlinear stability of viscous roll waves  

E-Print Network (OSTI)

Extending results of Oh--Zumbrun and Johnson--Zumbrun for parabolic conservation laws, we show that spectral stability implies nonlinear stability for spatially periodic viscous roll wave solutions of the one-dimensional St. Venant equations for shallow water flow down an inclined ramp. The main new issues to be overcome are incomplete parabolicity and the nonconservative form of the equations, which leads to undifferentiated quadratic source terms that cannot be handled using the estimates of the conservative case. The first is handled by treating the equations in the more favorable Lagrangian coordinates, for which one can obtain large-amplitude nonlinear damping estimates similar to those carried out by Mascia--Zumbrun in the related shock wave case, assuming only symmetrizability of the hyperbolic part. The second is handled by the observation that, similarly as in the relaxation and detonation cases, sources occurring in nonconservative components experience greater decay comparable to that experienced b...

Johnson, Matthew; Noble, Pascal

2010-01-01T23:59:59.000Z

156

HOISTING & RIGGING Assessment Plan--NNSA/Nevada Site Office Facility  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HOISTING & RIGGING Assessment Plan--NNSA/Nevada Site Office HOISTING & RIGGING Assessment Plan--NNSA/Nevada Site Office Facility Representative Division HOISTING & RIGGING Assessment Plan--NNSA/Nevada Site Office Facility Representative Division : To determine that hoisting and rigging operations are conducted according to "industry best standards" for increasing equipment reliability while assuring worker safety, and to verify issues being addressed in BN Hoisting assessment. Criteria: Lifts are identified and categorized appropriately for scheduled maintenance. DOE-STD-1090-2001 An integrated process ensures safety issues are identified and controls established. DOE-STD-1090-2001 Personnel operating and maintaining the hoisting equipment are trained; they understand their roles and responsibilities. DOE-STD-1090-2001

157

Nucleotide sequences and modifications that determine RIG-I/RNA binding and signaling activities  

E-Print Network (OSTI)

Cytoplasmic viral RNAs with 5? triphosphates (5?ppp) are detected by the RNA helicase RIG-I, initiating downstream signaling and alpha/beta interferon (IFN-?/?) expression that establish an antiviral state. We demonstrate ...

Urzi, Dina

158

Calibration and performance of a selective catalytic reduction (SCR) bench rig for NOx? emissions control  

E-Print Network (OSTI)

A laboratory test rig was designed and built to easily test SCR (Selective Catalytic Reduction) technology. Equipped with three 6 kW heaters, connections for liquid N2 and an assortment of test gases, and a connection with ...

Castro Galnares, Sebastián (Castro Galnares Wright Paz)

2008-01-01T23:59:59.000Z

159

U.S. Crude Oil and Natural Gas Active Well Service Rigs in ...  

U.S. Energy Information Administration (EIA)

U.S. Crude Oil and Natural Gas Active Well Service Rigs in operation (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9;

160

Power Production from Geothermal Brine with the Rotary Separator Turbine  

SciTech Connect

The rotary separator turbine is a new turbine device that operates with gas-liquid mixtures. This device achieves complete gas-liquid separation, generates power from the liquid and repressurizes the liquid. The use of the rotary separator turbine for geothermal power generation was investigated on this program. A pilot scale unit was designed and tested. Tests were conducted with a clean water/steam mixture and with geothermal brine/steam flows at East Mesa, California; Raft River, Idaho; and Roosevelt Hot Springs, Utah. The test results were used to calculate the performance advantage of a rotary separator turbine power system compared to a flash steam power system and a binary power system. The calculated performance advantages were then used to estimate market potential for wellhead and central station Biphase units. The measured performance in the laboratory and in the field agreed to within {+-} 10% of the predicted values. The design goal of 20 kWe was generated both in the laboratory and from brine. Separated steam quality was measured to be greater than 99.96% at all three geothermal resources and in the laboratory. Brine pressure leaving the test unit was greater than reinjection pressure requirements. Maximum brine outlet pressure of 90 psig was demonstrated. The measured performance values would result in a 34% increase in electric power production above a single stage flash steam system. Increasing the size from the pilot size unit (20kWe) to a wellhead unit (2000 kWe) gave a calculated performance advantage of 40%. Based on these favorable results, design, construction and testing of a full-size well-head unit was initiated.

Cerini, Donald J.; Hays, Lance G.

1980-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

A rotary-airlock valve resists abrasive mixtures  

SciTech Connect

Hill and Griffith (H and G, Cincinnati, Ohio) is a leading supplier of custom-blended additives to founderies. Thousands of tons of clay and carbon blends such as bentonite, gilsonite and pulverized coal, pass through the company's rotary-airlock feeding system each month. H and G's original rotary valves had cylinders lined with chrome, and closed-end rotors with tips made from nickel-chromium alloys. These valves remained in service for a maximum of only three months each. During that time, the abrasive mixtures passing through the valves virtually eroded them, increasing tolerances and causing significant air leakage. The leaks caused the pneumatic line to plug up, reducing the velocity of the line below the minimum level needed to carry any material. To overcome the leakage, a second blower was added to the system. This unit supplied an additional 40 brake hp to the pneumatic-conveying line. With constant maintenance of the valve and the continuous operation of both blowers, H and G was able to extend the valve's life by nine months. After 20 years of trying valves with various configuration, H and G installed a Smoot Type 6 rotary-airlock valve in September of 1985. The new valve's internals were made from abrasion-resistant grades of NiHard and Stellite. This combination of alloys prolonged the active life of the valve by improving its abrasion resistance. During its first year, the Smoot valve did not break down, leak air or require use of the secondary blower. After its first year of service no wear was found on the valve's internal surfaces. Another mechanical analysis was performed in 1991, after five additional years of valve operation. The valve, which had now handled more than 250,000 tons of product, showed minimal wear. H and G's capital costs had been reduced from 25[cents]/ton to 3[cents]/ton by the new valve.

Not Available

1993-03-01T23:59:59.000Z

162

Skew And Twist Resistant Hydrodynamic Rotary Shaft Seal  

SciTech Connect

A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland. Compared to prior art, this invention provides a dramatic reduction of seal and shaft wear in abrasive environments and provides a significant increase in seal life.

Dietle, Lannie (Sugar Land, TX); Kalsi, Manmohan Singh (Houston, TX)

2000-03-14T23:59:59.000Z

163

System and method for cooling a superconducting rotary machine  

Science Conference Proceedings (OSTI)

A system for cooling a superconducting rotary machine includes a plurality of sealed siphon tubes disposed in balanced locations around a rotor adjacent to a superconducting coil. Each of the sealed siphon tubes includes a tubular body and a heat transfer medium disposed in the tubular body that undergoes a phase change during operation of the machine to extract heat from the superconducting coil. A siphon heat exchanger is thermally coupled to the siphon tubes for extracting heat from the siphon tubes during operation of the machine.

Ackermann, Robert Adolf (Schenectady, NY); Laskaris, Evangelos Trifon (Schenectady, NY); Huang, Xianrui (Clifton Park, NY); Bray, James William (Niskayuna, NY)

2011-08-09T23:59:59.000Z

164

DEVELOPMENT OF A ROTARY MICROFILTER FOR RADIOACTIVE WASTE APPLICATIONS  

Science Conference Proceedings (OSTI)

The processing rate of Savannah River Site (SRS) high-level waste decontamination processes are limited by the flow rate of the solid-liquid separation. The baseline process, using a 0.1 micron cross-flow filter, produces {approx}0.02 gpm/sq. ft. of filtrate under expected operating conditions. Savannah River National Laboratory (SRNL) demonstrated significantly higher filter flux for actual waste samples using a small-scale rotary filter. With funding from the U. S. Department of Energy Office of Cleanup Technology, SRNL personnel are evaluating and developing the rotary microfilter for radioactive service at SRS. The authors improved the design for the disks and filter unit to make them suitable for high-level radioactive service. They procured two units using the new design, tested them with simulated SRS wastes, and evaluated the operation of the units. Work to date provides the following conclusions and program status: (1) The authors modified the design of the filter disks to remove epoxy and Ryton{reg_sign}. The new design includes welding both stainless steel and ceramic coated stainless steel filter media to a stainless steel support plate. The welded disks were tested in the full-scale unit. They showed good reliability and met filtrate quality requirements. (2) The authors modified the design of the unit, making installation and removal easier. The new design uses a modular, one-piece filter stack that is removed simply by disassembly of a flange on the upper (inlet) side of the filter housing. All seals and rotary unions are contained within the removable stack. (3) While it is extremely difficult to predict the life of the seal, the vendor representative indicates a minimum of one year in present service conditions is reasonable. Changing the seal face material from silicon-carbide to a graphite-impregnated silicon-carbide is expected to double the life of the seal. Replacement of the current seal with an air seal could increase the lifetime to 5 years and is undergoing testing in the current work. (4) The bottom bushing showed wear due to a misalignment during the manufacture of the filter tank. Replacing the graphite bushing with a more wear resistant material such as a carbide material will increase the lifetime of the bushing. This replacement requires a more wear resistant part or coating to prevent excessive wear of the shaft. The authors are currently conducting testing with the more wear resistant bushing. (5) The project team plans to use the rotary microfilter as a filter in advance of an ion exchange process under development for potential deployment in SRS waste tank risers.

Poirier, M; David Herman, D; Samuel Fink, S

2008-02-25T23:59:59.000Z

165

Structural basis of RNA recognition and activation by innate immune receptor RIG-I  

Science Conference Proceedings (OSTI)

Retinoic-acid-inducible gene-I (RIG-I; also known as DDX58) is a cytoplasmic pathogen recognition receptor that recognizes pathogen-associated molecular pattern (PAMP) motifs to differentiate between viral and cellular RNAs. RIG-I is activated by blunt-ended double-stranded (ds)RNA with or without a 5'-triphosphate (ppp), by single-stranded RNA marked by a 5'-ppp and by polyuridine sequences. Upon binding to such PAMP motifs, RIG-I initiates a signalling cascade that induces innate immune defences and inflammatory cytokines to establish an antiviral state. The RIG-I pathway is highly regulated and aberrant signalling leads to apoptosis, altered cell differentiation, inflammation, autoimmune diseases and cancer. The helicase and repressor domains (RD) of RIG-I recognize dsRNA and 5'-ppp RNA to activate the two amino-terminal caspase recruitment domains (CARDs) for signalling. Here, to understand the synergy between the helicase and the RD for RNA binding, and the contribution of ATP hydrolysis to RIG-I activation, we determined the structure of human RIG-I helicase-RD in complex with dsRNA and an ATP analogue. The helicase-RD organizes into a ring around dsRNA, capping one end, while contacting both strands using previously uncharacterized motifs to recognize dsRNA. Small-angle X-ray scattering, limited proteolysis and differential scanning fluorimetry indicate that RIG-I is in an extended and flexible conformation that compacts upon binding RNA. These results provide a detailed view of the role of helicase in dsRNA recognition, the synergy between the RD and the helicase for RNA binding and the organization of full-length RIG-I bound to dsRNA, and provide evidence of a conformational change upon RNA binding. The RIG-I helicase-RD structure is consistent with dsRNA translocation without unwinding and cooperative binding to RNA. The structure yields unprecedented insight into innate immunity and has a broader impact on other areas of biology, including RNA interference and DNA repair, which utilize homologous helicase domains within DICER and FANCM.

Jiang, Fuguo; Ramanathan, Anand; Miller, Matthew T.; Tang, Guo-Qing; Gale, Jr., Michael; Patel, Smita S.; Marcotrigiano, Joseph (Rutgers); (RWJ-Med); (UW-MED)

2012-05-29T23:59:59.000Z

166

Research for the Crane Boom Length Coefficient Considering the Tower Head Flexibility in Rotary Plane  

Science Conference Proceedings (OSTI)

When the crane boom length in rotary plane is determined, the traditional methods only consider support condition, non-uniform, boom end lateral displacement constraint effect of amplitude dragline and hoist rope tensile forces. Ignoring tower head elastic ... Keywords: Equivalent elastic support method, Rotary plane, Tower head flexibility, Non-conservative loading, Length coefficient

Zhang Guangyun; Lan Peng; Lu Nianli

2011-01-01T23:59:59.000Z

167

Chemical Methods for Ugnu Viscous Oils  

SciTech Connect

The North Slope of Alaska has large (about 20 billion barrels) deposits of viscous oil in Ugnu, West Sak and Shraeder Bluff reservoirs. These shallow reservoirs overlie existing productive reservoirs such as Kuparuk and Milne Point. The viscosity of the Ugnu reservoir on top of Milne Point varies from 200 cp to 10,000 cp and the depth is about 3300 ft. The same reservoir extends to the west on the top of the Kuparuk River Unit and onto the Beaufort Sea. The depth of the reservoir decreases and the viscosity increases towards the west. Currently, the operators are testing cold heavy oil production with sand (CHOPS) in Ugnu, but oil recovery is expected to be low (< 10%). Improved oil recovery techniques must be developed for these reservoirs. The proximity to the permafrost is an issue for thermal methods; thus nonthermal methods must be considered. The objective of this project is to develop chemical methods for the Ugnu reservoir on the top of Milne Point. An alkaline-surfactant-polymer (ASP) formulation was developed for a viscous oil (330 cp) where as an alkaline-surfactant formulation was developed for a heavy oil (10,000 cp). These formulations were tested in one-dimensional and quarter five-spot Ugnu sand packs. Micromodel studies were conducted to determine the mechanisms of high viscosity ratio displacements. Laboratory displacements were modeled and transport parameters (such as relative permeability) were determined that can be used in reservoir simulations. Ugnu oil is suitable for chemical flooding because it is biodegraded and contains some organic acids. The acids react with injected alkali to produce soap. This soap helps in lowering interfacial tension between water and oil which in turn helps in the formation of macro and micro emulsions. A lower amount of synthetic surfactant is needed because of the presence of organic acids in the oil. Tertiary ASP flooding is very effective for the 330 cp viscous oil in 1D sand pack. This chemical formulation includes 1.5% of an alkali, 0.4% of a nonionic surfactant, and 0.48% of a polymer. The secondary waterflood in a 1D sand pack had a cumulative recovery of 0.61 PV in about 3 PV injection. The residual oil saturation to waterflood was 0.26. Injection of tertiary alkaline-surfactant-polymer slug followed by tapered polymer slugs could recover almost 100% of the remaining oil. The tertiary alkali-surfactant-polymer flood of the 330 cp oil is stable in three-dimensions; it was verified by a flood in a transparent 5-spot model. A secondary polymer flood is also effective for the 330 cp viscous oil in 1D sand pack. The secondary polymer flood recovered about 0.78 PV of oil in about 1 PV injection. The remaining oil saturation was 0.09. The pressure drops were reasonable (<2 psi/ft) and depended mainly on the viscosity of the polymer slug injected. For the heavy crude oil (of viscosity 10,000 cp), low viscosity (10-100 cp) oil-in-water emulsions can be obtained at salinity up to 20,000 ppm by using a hydrophilic surfactant along with an alkali at a high water-to-oil ratio of 9:1. Very dilute surfactant concentrations (~0.1 wt%) of the synthetic surfactant are required to generate the emulsions. It is much easier to flow the low viscosity emulsion than the original oil of viscosity 10,000 cp. Decreasing the WOR reverses the type of emulsion to water-in-oil type. For a low salinity of 0 ppm NaCl, the emulsion remained O/W even when the WOR was decreased. Hence a low salinity injection water is preferred if an oil-in-water emulsion is to be formed. Secondary waterflood of the 10,000 cp heavy oil followed by tertiary injection of alkaline-surfactants is very effective. Waterflood has early water breakthrough, but recovers a substantial amount of oil beyond breakthrough. Waterflood recovers 20-37% PV of the oil in 1D sand pack in about 3 PV injection. Tertiary alkali-surfactant injection increases the heavy oil recovery to 50-70% PV in 1D sand packs. As the salinity increased, the oil recovery due to alkaline surfactant flood increased, but water-in-oil emulsion was p

Kishore Mohanty

2012-03-31T23:59:59.000Z

168

Chemical Methods for Ugnu Viscous Oils  

Science Conference Proceedings (OSTI)

The North Slope of Alaska has large (about 20 billion barrels) deposits of viscous oil in Ugnu, West Sak and Shraeder Bluff reservoirs. These shallow reservoirs overlie existing productive reservoirs such as Kuparuk and Milne Point. The viscosity of the Ugnu reservoir on top of Milne Point varies from 200 cp to 10,000 cp and the depth is about 3300 ft. The same reservoir extends to the west on the top of the Kuparuk River Unit and onto the Beaufort Sea. The depth of the reservoir decreases and the viscosity increases towards the west. Currently, the operators are testing cold heavy oil production with sand (CHOPS) in Ugnu, but oil recovery is expected to be low (polymer (ASP) formulation was developed for a viscous oil (330 cp) where as an alkaline-surfactant formulation was developed for a heavy oil (10,000 cp). These formulations were tested in one-dimensional and quarter five-spot Ugnu sand packs. Micromodel studies were conducted to determine the mechanisms of high viscosity ratio displacements. Laboratory displacements were modeled and transport parameters (such as relative permeability) were determined that can be used in reservoir simulations. Ugnu oil is suitable for chemical flooding because it is biodegraded and contains some organic acids. The acids react with injected alkali to produce soap. This soap helps in lowering interfacial tension between water and oil which in turn helps in the formation of macro and micro emulsions. A lower amount of synthetic surfactant is needed because of the presence of organic acids in the oil. Tertiary ASP flooding is very effective for the 330 cp viscous oil in 1D sand pack. This chemical formulation includes 1.5% of an alkali, 0.4% of a nonionic surfactant, and 0.48% of a polymer. The secondary waterflood in a 1D sand pack had a cumulative recovery of 0.61 PV in about 3 PV injection. The residual oil saturation to waterflood was 0.26. Injection of tertiary alkaline-surfactant-polymer slug followed by tapered polymer slugs could recover almost 100% of the remaining oil. The tertiary alkali-surfactant-polymer flood of the 330 cp oil is stable in three-dimensions; it was verified by a flood in a transparent 5-spot model. A secondary polymer flood is also effective for the 330 cp viscous oil in 1D sand pack. The secondary polymer flood recovered about 0.78 PV of oil in about 1 PV injection. The remaining oil saturation was 0.09. The pressure drops were reasonable (polymer slug injected. For the heavy crude oil (of viscosity 10,000 cp), low viscosity (10-100 cp) oil-in-water emulsions can be obtained at salinity up to 20,000 ppm by using a hydrophilic surfactant along with an alkali at a high water-to-oil ratio of 9:1. Very dilute surfactant concentrations (~0.1 wt%) of the synthetic surfactant are required to generate the emulsions. It is much easier to flow the low viscosity emulsion than the original oil of viscosity 10,000 cp. Decreasing the WOR reverses the type of emulsion to water-in-oil type. For a low salinity of 0 ppm NaCl, the emulsion remained O/W even when the WOR was decreased. Hence a low salinity injection water is preferred if an oil-in-water emulsion is to be formed. Secondary waterflood of the 10,000 cp heavy oil followed by tertiary injection of alkaline-surfactants is very effective. Waterflood has early water breakthrough, but recovers a substantial amount of oil beyond breakthrough. Waterflood recovers 20-37% PV of the oil in 1D sand pack in about 3 PV injection. Tertiary alkali-surfactant injection increases the heavy oil recovery to 50-70% PV in 1D sand packs. As the salinity increased, the oil recovery due to alkaline surfactant flood increased, but water-in-oil emulsion was p

Kishore Mohanty

2012-03-31T23:59:59.000Z

169

Comparison of residence time models for cascading rotary dryers  

SciTech Connect

The predictions of the models of Matchett and Baker (1988), Saeman and Mitchell (1954) and Friedman and Marshall (1949) for the solids residence time in rotary dryers have been compared with both pilot-scale and industrial-scale data. A countercurrent pilot-scale dryer of 0.2m diameter and 2m long has been used with air velocities up to 1.5 m to measure the residence times of sorghum grain. The average discrepancy for the solids residence time between the predictions and the experiments that were carried out in the pilot-scale rotary dryer is {minus}10.4%. Compared with the models of Friedman and Marshall (1949) and Saeman and Mitchell (1954) for the pilot-scale data obtained here, the Matchett and Baker model is more satisfactory for predicting the solids residence time in this pilot-scale dryer. It has also been found that the model of Matchett and Baker describes the industrial data of Saeman and Mitchell (1954) than the correlation of Friedman and Marshall (1949).

Cao, W.F.; Langrish, T.A.G. [Univ. of Sydney, New South Wales (Australia). Dept. of Chemical Engineering

1999-04-01T23:59:59.000Z

170

Wear compensating seal means for rotary piston coal feeder  

SciTech Connect

The present invention is directed to a wear compensating seal arrangement for use in a rotary piston feeder utilized for feeding pulverized coal into a gasifier operating at relatively high pressures and elevated temperatures. The rotary piston feeder has a circular casing with a coal loading opening therein diametrically opposed from a coal discharge and contains a rotatable disoidal rotor having a cylinder in which a reciprocatable piston is disposed. The reciprocation of the piston within the cylinder is provided by a stationary conjugate cam whereby pulverized coal from a coal hopper at atmospheric pressure can be introduced into the cylinder and then discharged therefrom into the high pressure gasifier while maintaining minimal losses of producer gas and the expenditure of minimal energy which would detract from the efficiency of the gasification. The seal arrangement of the present invention is disposed between the rotor and the casing about the coal discharge and prevents the high pressure gases from within the gasifier from escaping between these relatively movable parts during operation of the coal feeder. The seal utilizes a primary seal in contact with the rotor and a secondary seal supporting the primary seal. The primary seal is continuously urged towards the rotor by springs and the high pressure producer gas.

Gencsoy, Hasan T. (Morgantown, WV); Gardner, John F. (Morgantown, WV)

1979-01-01T23:59:59.000Z

171

Viscous Sublayer Below a Wind-Disturbed Water Surface  

Science Conference Proceedings (OSTI)

Drift currents immediately below the water surface were systematically measured in a circulating wind-wave tank. The results confirmed the existence of a viscous sublayer at the air–water interface, with the current varying linearly with depth ...

Jin Wu

1984-01-01T23:59:59.000Z

172

Violations of conservation laws in viscous liquid dynamics  

E-Print Network (OSTI)

The laws expressing conservation of momentum and energy apply to any isolated system, but these laws are violated for for highly viscous liquids under laboratory conditions because of the unavoidable interactions with the measuring equipment over the long times needed to study the dynamics. Although particle number conservation applies strictly for any liquid, the solidity of viscous liquids implies that even this conservation law is apparently violated in coarse-grained descriptions of density fluctuations.

Jeppe C. Dyre

2006-03-01T23:59:59.000Z

173

Rigged Hilbert space formalism as an extended mathematical formalism for quantum systems. II. Transformation theory in nonrelativistic quantum mechanics  

Science Conference Proceedings (OSTI)

Results of a previous paper are used to obtain a rigorous mathematical formulation of the transformation theory of nonrelativistic quantum mechanics within the framework of rigged Hilbert spaces.

O. Melsheimer

1974-01-01T23:59:59.000Z

174

Development of a Low-Cost Rotary Steerable Drilling System  

DOE Green Energy (OSTI)

The project had the goal to develop and commercialize a low-cost rotary steerable system (LCRSS) capable of operating downhole at conventional pressures and temperatures to reduce operating costs by a minimum of 50% and lost-in-hole charges by at least 50% over the currently offered systems. The LCRSS system developed under this project does reduce operating costs by 55% and lost-in-hole charges by at least 50%. The developed product is not commercializable in its current form. The overall objective was to develop and commercialize a low cost rotary steerable system (LCRSS) capable of operating downhole at conventional pressures and temperatures (20,000 psi/150 C) while reducing the operating costs by 50% and the lost-in-hole charges by 50% over the currently available systems. The proposed reduction in costs were to be realized through the significant reduction in tool complexity, a corresponding increase in tool reliability as expressed in the mean-time between failure (MTBF), and a reduction in the time and costs required to service tools after each field operation. Ultimately, the LCRSS system was to be capable of drilling 7 7/8 in. to 9 5/8 in. borehole diameters. The project was divided into three Phases, of which Phases I & II were previously completed and reported on, and are part of the case file. Therefore, the previously reported information is not repeated herein. Phase III included the fabrication of two field ready prototypes that were to be subjected to a series of drilling tests at GTI Catoosa, DOE RMOTC, and at customer partnering wells, if possible, as appropriate in the timing of the field test objectives to fully exercise all elements of the LCRSS. These tests were conducted in an iterative process based on a performance/reliability improvement cycle with the goal of demonstrating the system met all aspects required for commercial viability. These tests were conducted to achieve continuous runs of 100+ hours with well trajectories that fully exercised the tool's build/turn/drop/hold target capabilities and its higher end ratings for bit weight, torque and rotary speed. The tool teardowns were rigorously analyzed at the conclusion of each field run to assess component wear rates and to fully document any detrimental behavior(s) observed.

Roney Nazarian

2012-01-31T23:59:59.000Z

175

Rim for rotary inertial energy storage device and method  

DOE Patents (OSTI)

The present invention is directed to an improved rim or a high-performance rotary inertial energy storage device (flywheel). The improved rim is fabricated from resin impregnated filamentary material which is circumferentially wound in a side-by-side relationship to form a plurality of discretely and sequentially formed concentric layers of filamentary material that are bound together in a resin matrix. The improved rim is provided by prestressing the filamentary material in each successive layer to a prescribed tension loading in accordance with a predetermined schedule during the winding thereof and then curing the resin in each layer prior to forming the next layer for providing a prestress distribution within the rim to effect a self-equilibrating compressive prestress within the windings which counterbalances the transverse or radial tensile stresses generated during rotation of the rim for inhibiting deleterious delamination problems.

Knight, Jr., Charles E. (Knoxville, TN); Pollard, Roy E. (Powell, TN)

1980-01-01T23:59:59.000Z

176

High pressure rotary piston coal feeder for coal gasification applications  

DOE Patents (OSTI)

The subject development is directed to an apparatus for feeding pulverized coal into a coal gasifier operating at relatively high pressures and elevated temperatures. This apparatus is a rotary piston feeder which comprises a circular casing having a coal loading opening therein diametrically opposed from a coal discharge and contains a rotatable discoid rotor having a cylinder in which a reciprocateable piston is disposed. The reciprocation of the piston within the cylinder is provided by a stationary conjugate cam arrangement whereby the pulverized coal from a coal hopper at atmospheric pressure can be introduced into the cylinder cavity and then discharged therefrom into the high-pressure gasifier without the loss of high pressure gases from within the latter.

Gencsoy, Hasan T. (Morgantown, WV)

1977-05-24T23:59:59.000Z

177

TESTING OF THE SECOND GENERATION SPINTEK ROTARY FILTER -11357  

SciTech Connect

The SpinTek rotary microfilter has been developed under the Department of Energy (DOE) Office of Environmental Management (EM) for the purpose of deployment in radioactive service in the DOE complex. The unit that was fabricated and tested is the second generation of the filter that incorporates recommended improvements from previous testing. The completion of this test satisfied a key milestone for the EM technology development program and technology readiness for deployment by Savannah River Remediation in the Small Column Ion Exchange and Sludge Washing processes at the Savannah River Site (SRS). The Savannah River National Laboratory (SRNL) contracted SpinTek Filtration to fabricate a full scale 25 disk rotary filter and perform a 1000 hour endurance test with a simulated SRS sludge. Over 1500 hours of operation have been completed with the filter. SpinTek Filtration fabricated a prototypic 25 disk rotary filter including updates to manufacturing tolerances, an updated design to the rotary joint, improved cooling to the bottom journal, decreases in disk and filter shaft hydraulic resistances. The filter disks were fabricated with 0.5 {micro} pore size, sintered-metal filter media manufactured by Pall Corporation (M050). After fabrication was complete, the filter passed acceptance tests demonstrating rejection of solids and clean water flux with a 50% improvement over the previous filters. Once the acceptance test was complete, a 1000 hour endurance test was initiated simulating a sludge washing process. The test used a simulated SRS Sludge Batch 6 recipe. The insoluble solids started at 5 wt% and were raised to 10 and 15 wt% insoluble solids to simulate the concentration of a large volume tank. The filter system was automated and set up for 24 hour unattended operation. To facilitate this, process control logic was written to operate the filter. During the development it was demonstrated that the method of starting and stopping the filter can affect the build up of filter cake on the disks and therefore the performance of the filter. The filter performed well with the simulant. Very little drop in production was noticed between the 5 and 10 wt% insoluble solids feed. Increasing to 15 wt% had a more pronounced impact due to the rheology of the feed. Acid cleaning was used to clean the filter disks in-situ and restore filtration rate to almost 90% of the initial clean disk rate. Eighty liters of 0.2 M nitric acid in conjunction with water rinses were used to clean the filter in less than 2 hours. Filter testing was completed after 1000 hours of operation were performed on the final filter assembly configuration. The total run time for the testing was over 1500 hours. At the end of the test, the sludge washing was performed successfully from approximately 5.6 M to less than 1 M sodium.

Herman, D.; Poirier, M.; Fowley, M.; Keefer, M.; Huff, T.

2011-02-02T23:59:59.000Z

178

Test rig and particulate deposit and cleaning evaluation processes using the same  

DOE Patents (OSTI)

A rig and test program for determining the amount, if any, of contamination that will collect in the passages of a fluid flow system, such as a power plant fluid delivery system to equipment assemblies or sub-assemblies, and for establishing methods and processes for removing contamination therefrom. In the presently proposed embodiment, the rig and test programs are adapted in particular to utilize a high-pressure, high-volume water flush to remove contamination from substantially the entire fluid delivery system, both the quantity of contamination and as disposed or deposited within the system.

Schroder, Mark Stewart (Hendersonville, NC); Woodmansee, Donald Ernest (Schenectady, NY); Beadie, Douglas Frank (Greer, SC)

2002-01-01T23:59:59.000Z

179

Relativistic Shock Waves and Mach Cones in Viscous Gluon Matter  

E-Print Network (OSTI)

To investigate the formation and the propagation of relativistic shock waves in viscous gluon matter we solve the relativistic Riemann problem using a microscopic parton cascade. We demonstrate the transition from ideal to viscous shock waves by varying the shear viscosity to entropy density ratio $\\eta/s$. Furthermore we compare our results with those obtained by solving the relativistic causal dissipative fluid equations of Israel and Stewart (IS), in order to show the validity of the IS hydrodynamics. Employing the parton cascade we also investigate the formation of Mach shocks induced by a high-energy gluon traversing viscous gluon matter. For $\\eta/s = 0.08$ a Mach cone structure is observed, whereas the signal smears out for $\\eta/s \\geq 0.32$.

Ioannis Bouras; Etele Molnár; Harri Niemi; Zhe Xu; Andrej El; Oliver Fochler; Francesco Lauciello; Carsten Greiner; Dirk H. Rischke

2010-04-26T23:59:59.000Z

180

Generation of Optimal Unit Distance Codes for Rotary Encoders through Simulated Evolution  

Science Conference Proceedings (OSTI)

An evolutionary algorithm is used to generate unit distance codes for absolute rotary encoders. The target is to obtain a code suitable for disk size reduction, or for resolution increase, thus overcoming the limitations of conventional Gray codes. Obtained ...

Stefano Gregori; Roberto Rossi; Guido Torelli; Valentino Liberali

2001-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Modeling and simulation of two-leaf semi-rotary VAWT  

Science Conference Proceedings (OSTI)

In this paper, according to the structural characteristics of two-leaf semi-rotary VAWT (vertical axis wind turbine), the microelement method and the coordinate system rotation method are used to establish the mathematical model of wind turbine and, ...

Qian Zhang; Haifeng Chen; Binbin Wang

2010-09-01T23:59:59.000Z

182

GA 200-500 (VSD): Oil-injected rotary screw compressors, 200 ...  

U.S. Energy Information Administration (EIA)

GA 200-500 (VSD): Oil-injected rotary screw compressors, 200-500 kW / 268-670 hp.,Kunshan CompAirs Machinery Plant Co.,Ltd is the leading air ...

183

GA 30+-90 / GA 37-90 VSD: Oil-injected rotary screw ...  

U.S. Energy Information Administration (EIA)

GA 30+-90 / GA 37-90 VSD: Oil-injected rotary screw compressors, 30-90 kW / 40-125 hp,Kunshan CompAirs Machinery Plant Co.,Ltd is the leading air ...

184

GAe11-30 / GAe 18-30 VSD: Oil-injected rotary screw ...  

U.S. Energy Information Administration (EIA)

GAe11-30 / GAe 18-30 VSD: Oil-injected rotary screw compressors, 11-30 kW / 15-40 hp,Kunshan CompAirs Machinery Plant Co.,Ltd is the leading air ...

185

GA 11+-30/GA 15-30 VSD: Oil-injected rotary screw compressors ...  

U.S. Energy Information Administration (EIA)

GA 11+-30/GA 15-30 VSD: Oil-injected rotary screw compressors, 11-30 kW / 15-40 hp,Kunshan CompAirs Machinery Plant Co.,Ltd is the leading air ...

186

GA 90+-160+ / GA 110-160 VSD: Oil-injected rotary screw ...  

U.S. Energy Information Administration (EIA)

GA 90+-160+ / GA 110-160 VSD: Oil-injected rotary screw compressors, 90-160 kW / 125-200 hp.,Kunshan CompAirs Machinery Plant Co.,Ltd is the leading ...

187

Bias in hard disk drive rotary actuator pivot bearings: measurements and lubrication phenomena  

Science Conference Proceedings (OSTI)

Bias in disk drive rotary actuator bearings exhibits complex behavior related to the history of the actuator movement. This paper investigates the hysteresis component of bias present after seeks. Measurements of bias during full stroke actuator movements ...

Daniel Helmick; William Messner; C. Fred Higgs, III

2007-04-01T23:59:59.000Z

188

Granular Attrition due to Rotary Valve in a Pneumatic Conveying System  

E-Print Network (OSTI)

The rotary valve is a widely used mechanical device in many solids-handling industrial processes. However, it may also be responsible for most of the attrition effects occurring in a typical process. In this study, the ...

Yao, Jun

189

Typical fault mode determination for rotor test rig based on correlation dimension and Kolmogorov entropy  

Science Conference Proceedings (OSTI)

This paper experimentally investigates the vibration faults of rotor, such as the unbalance, the loosening and the friction, using the rotor test rig. According to the theory of fractal and chaos, the vibration signal series are reconstructed. By the ... Keywords: Kolmogorov entropy, correlation dimension, fractal and chaos, vibration fault

Fengling Zhang; Yanting Ai; Fei Liu

2009-08-01T23:59:59.000Z

190

A Built for Purpose Micro-Hole Coiled Tubing Rig (MCTR)  

Science Conference Proceedings (OSTI)

This report will serve as the final report on the work performed from the contract period October 2005 thru April 2007. The project 'A Built for Purpose Microhole Coiled Tubing Rig (MCTR)' purpose was to upgrade an existing state-of-the-art Coiled Tubing Drilling Rig to a Microhole Coiled Tubing Rig (MCTR) capable of meeting the specifications and tasks of the Department of Energy. The individual tasks outlined to meet the Department of Energy's specifications are: (1) Concept and development of lubricator and tool deployment system; (2) Concept and development of process control and data acquisition; (3) Concept and development of safety and efficiency improvements; and (4) Final unit integration and testing. The end result of the MCTR upgrade has produced a unit capable of meeting the following requirements: (1) Capable of handling 1-inch through 2-3/8-inch coiled tubing (Currently dressed for 2-3/8-inch coiled tubing and capable of running up to 3-1/2-inch coiled tubing); (2) Capable of drilling and casing surface, intermediate, production and liner hole intervals; (3) Capable of drilling with coiled tubing and has all controls and installation piping for a top drive; (4) Rig is capable of running 7-5/8-inch range 2 casing; and (5) Capable of drilling 5,000 ft true vertical depth (TVD) and 6,000 ft true measured depth (TMD).

Bart Patton

2007-09-30T23:59:59.000Z

191

Arbitrary blade section design based on viscous considerations. Background information  

SciTech Connect

Background information is presented on an arbitrary blade section design method which is outlined in a joint paper. This information concerns the assumptions, the development, and the predictive capabilities of the viscous flow calculation tool used in the design procedure. General properties of laminar and turbulent, unseparated or separated compressible shear layers, necessary for the blade optimization procedure, are discussed.

Bouras, B.; Karagiannis, F.; Leoutsakos, G.; Giannakoglou, K.C.; Papailiou, K.D. [National Technical Univ. of Athens (Greece). Thermal Turbomachinery Lab.

1996-06-01T23:59:59.000Z

192

Flow of a viscous liquid between moving permeable surfaces  

Science Conference Proceedings (OSTI)

Plane motion of a viscous incompressible liquid between rotating coaxial permeable vertical cylinders of infinite length and flow between moving horizontal permeable planes are considered. Exact solutions are obtained for the Navier-Stokes equation in the case of a constant volume flow rate of a liquid in the direction normal to the surface. The boundary layer and mainstream flows are investigated.

Volk, A.M. [Belarussian Technological Institute, Minsk (Belarus)

1994-02-01T23:59:59.000Z

193

Viscous Dissipation of Turbulence Kinetic Energy in Storms  

Science Conference Proceedings (OSTI)

In this note the magnitude of the viscous dissipation of turbulence kinetic energy in the surface layer of storms is investigated. It is shown that the layer-integrated dissipative heating is a cubic function of the wind speed. The magnitude of ...

Steven Businger; Joost A. Businger

2001-12-01T23:59:59.000Z

194

Field Assisted Viscous Flow and Crystallization in a Sodium ...  

Science Conference Proceedings (OSTI)

The onset of viscous flow is accompanied by an equally abrupt transition in the ... A History of the Theories of Glass Structure: Can We Really Believe What is ... Mechanisms of the Conversion Reaction in FeF2 Cathodes Exposed to Li in High

195

Hydrodynamically Lubricated Rotary Shaft Having Twist Resistant Geometry  

SciTech Connect

A hydrodynamically lubricated squeeze packing type rotary shaft with a cross-sectional geometry suitable for pressurized lubricant retention is provided which, in the preferred embodiment, incorporates a protuberant static sealing interface that, compared to prior art, dramatically improves the exclusionary action of the dynamic sealing interface in low pressure and unpressurized applications by achieving symmetrical deformation of the seal at the static and dynamic sealing interfaces. In abrasive environments, the improved exclusionary action results in a dramatic reduction of seal and shaft wear, compared to prior art, and provides a significant increase in seal life. The invention also increases seal life by making higher levels of initial compression possible, compared to prior art, without compromising hydrodynamic lubrication; this added compression makes the seal more tolerant of compression set, abrasive wear, mechanical misalignment, dynamic runout, and manufacturing tolerances, and also makes hydrodynamic seals with smaller cross-sections more practical. In alternate embodiments, the benefits enumerated above are achieved by cooperative configurations of the seal and the gland which achieve symmetrical deformation of the seal at the static and dynamic sealing interfaces. The seal may also be configured such that predetermined radial compression deforms it to a desired operative configuration, even through symmetrical deformation is lacking.

Dietle, Lannie (Houston, TX); Gobeli, Jeffrey D. (Houston, TX)

1993-07-27T23:59:59.000Z

196

Sway control method and system for rotary cranes  

DOE Patents (OSTI)

Methods and apparatuses for reducing the oscillatory motion of rotary crane payloads during operator-commanded or computer-controlled maneuvers. An Input-shaping filter receives input signals from multiple operator input devices and converts them into output signals readable by the crane controller to dampen the payload tangential and radial sway associated with rotation of the jib. The input signals are characterized by a hub rotation trajectory .gamma.(t), which includes a jib angular acceleration .gamma., a trolley acceleration x, and a load-line length velocity L. The system state variables are characterized by a tangential rotation angle .theta.(t) and a radial rotation angle .phi.(t) of the load-line. The coupled equations of motion governing the filter are non-linear and configuration-dependent. In one embodiment, a filter is provided between the operator and the crane for filtering undesired frequencies from the angular .gamma. and trolley x velocities to suppress payload oscillation. In another embodiment, crane commands are computer generated and controlled to suppress vibration of the payload using a postulated asymmetrical shape for the acceleration profiles of the jib, which profiles are uniquely determined by a set of parameters (including the acceleration pulse amplitude and the duration and coast time between pulses), or a dynamic programming approach.

Robinett, Rush D. (Tijeras, NM); Parker, Gordon G. (Houghton, MI); Feddema, John T. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Petterson, Ben J. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

197

Coal desulfurization in a rotary kiln combustor. Final report, March 15, 1990--July 31, 1991  

Science Conference Proceedings (OSTI)

The purpose of this project was to demonstrate the combustion of coal and coal wastes in a rotary kiln reactor with limestone addition for sulfur control. The rationale for the project was the perception that rotary systems could bring several advantages to combustion of these fuels, and may thus offer an alternative to fluid-bed boilers. Towards this end, an existing wood pyrolysis kiln (the Humphrey Charcoal kiln) was to be suitably refurbished and retrofitted with a specially designed version of a patented air distributor provided by Universal Energy, Inc. (UEI). As the project progressed beyond the initial stages, a number of issues were raised regarding the feasibility and the possible advantages of burning coals in a rotary kiln combustor and, in particular, the suitability of the Humphrey Charcoal kiln as a combustor. Instead, an opportunity arose to conduct combustion tests in the PEDCO Rotary Cascading-Bed Boiler (RCBB) commercial demonstration unit at the North American Rayon CO. (NARCO) in Elizabethton, TN. The tests focused on anthracite culm and had two objectives: (a) determine the feasibility of burning anthracite culms in a rotary kiln boiler and (b) obtain input for any further work involving the Humphrey Charcoal kiln combustor. A number of tests were conducted at the PEDCO unit. The last one was conducted on anthracite culm procured directly from the feed bin of a commercial circulating fluid-bed boiler. The results were disappointing; it was difficult to maintain sustained combustion even when large quantities of supplemental fuel were used. Combustion efficiency was poor, around 60 percent. The results suggest that the rotary kiln boiler, as designed, is ill-suited with respect to low-grade, hard to burn solid fuels, such as anthracite culm. Indeed, data from combustion of bituminous coal in the PEDCO unit suggest that with respect to coal in general, the rotary kiln boiler appears inferior to the circulating fluid bed boiler.

Cobb, J.T. Jr.

1992-09-11T23:59:59.000Z

198

Rotary seal with enhanced lubrication and contaminant flushing  

DOE Patents (OSTI)

A resilient, ring shaped interference-type hydrodynamic rotary seal having waves on the lubricant side which provide increased film thickness and flushing action by creating contact pressure induced angulated restrictions formed by abrupt restrictive diverters. The angulated restrictions are defined by projecting ridges, corners at the trailing edge of the waves, or simply by use of a converging shape at the trailing edge of the waves which is more abrupt than the gently converging hydrodynamic inlet shape at the leading edge of the waves. The abrupt restrictive diverter performs two functions; a restricting function and a diverting function. The angulated restrictions cause a local film thickness restriction which produces a damming effect preventing a portion of the lubricant from leaking out of the dynamic sealing interface at the trailing edge of the wave, and results in a much thicker lubricant film thickness under the waves. This contributes to more film thickness in the remainder of the dynamic sealing interface toward the environment because film thickness tends to decay gradually rather than abruptly due to the relative stiffness of the seal material. Because of the angle of the abrupt restrictive diverter relative to the relative rotation direction, in conjunction with the restriction or damming effect, a strong diverting action is produced which pumps lubricant across the dynamic sealing interface toward the environment. The lubricant diversion is caused by the component of the rotational velocity tangent to the abrupt restrictive diverter. The component of rotational velocity normal to the abrupt restrictive diverter causes a portion of the lubricant film to be pumped past the abrupt restrictive diverter, thereby assuring adequate lubrication thereof.

Dietle, Lannie L. (Sugar Land, TX)

2000-01-01T23:59:59.000Z

199

USE OF POLYMERS TO RECOVER VISCOUS OIL FROM UNCONVENTIONAL RESERVOIRS  

Science Conference Proceedings (OSTI)

This final technical progress report summarizes work performed the project, 'Use of Polymers to Recover Viscous Oil from Unconventional Reservoirs.' The objective of this three-year research project was to develop methods using water soluble polymers to recover viscous oil from unconventional reservoirs (i.e., on Alaska's North Slope). The project had three technical tasks. First, limits were re-examined and redefined for where polymer flooding technology can be applied with respect to unfavorable displacements. Second, we tested existing and new polymers for effective polymer flooding of viscous oil, and we tested newly proposed mechanisms for oil displacement by polymer solutions. Third, we examined novel methods of using polymer gels to improve sweep efficiency during recovery of unconventional viscous oil. This report details work performed during the project. First, using fractional flow calculations, we examined the potential of polymer flooding for recovering viscous oils when the polymer is able to reduce the residual oil saturation to a value less than that of a waterflood. Second, we extensively investigated the rheology in porous media for a new hydrophobic associative polymer. Third, using simulation and analytical studies, we compared oil recovery efficiency for polymer flooding versus in-depth profile modification (i.e., 'Bright Water') as a function of (1) permeability contrast, (2) relative zone thickness, (3) oil viscosity, (4) polymer solution viscosity, (5) polymer or blocking-agent bank size, and (6) relative costs for polymer versus blocking agent. Fourth, we experimentally established how much polymer flooding can reduce the residual oil saturation in an oil-wet core that is saturated with viscous North Slope crude. Finally, an experimental study compared mechanical degradation of an associative polymer with that of a partially hydrolyzed polyacrylamide. Detailed results from the first two years of the project may be found in our first and second annual reports. Our latest research results, along with detailed documentation of our past work, can be found on our web site at http://baervan.nmt.edu/randy/. As an overall summary of important findings for the project, polymer flooding has tremendous potential for enhanced recovery of viscous oil. Fear of substantial injectivity reduction was a primary hurdle that limited application of polymer flooding. However, that concern is largely mitigated by (1) use of horizontal wells and (2) judicious injection above the formation parting pressure. Field cases now exist where 200-300-cp polymer solutions are injected without significant reductions in injectivity. Concern about costs associated with injection of viscous polymer solutions was a second major hurdle. However, that concern is reduced substantially by realization that polymer viscosity increases approximately with the square of polymer concentration. Viscosity can be doubled with only a 40% increase in polymer concentration. Up to a readily definable point, increases in viscosity of the injected polymer solution are directly related to increases in sweep efficiency and oil recovery. Previously published simulation results - suggesting that shear-thinning polymer solutions were detrimental to sweep efficiency - were shown to be unfounded (both theoretically and experimentally).

Randall Seright

2011-09-30T23:59:59.000Z

200

ROTARY FILTER FINES TESTING FOR SMALL COLUMN ION EXCHANGE  

SciTech Connect

SRNL was requested to quantify the amount of 'fines passage' through the 0.5 micron membranes currently used for the rotary microfilter (RMF). Testing was also completed to determine if there is any additional benefit to utilizing a 0.1 micron filter to reduce the amount of fines that could pass through the filter. Quantifying of the amount of fines that passed through the two sets of membranes that were tested was accomplished by analyzing the filtrate by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) for titanium. Even with preparations to isolate the titanium, all samples returned results of less than the instrument's detection limit of 0.184 mg/L. Test results show that the 0.5 micron filters produced a significantly higher flux while showing a negligible difference in filtrate clarity measured by turbidity. The first targeted deployment of the RMF is with the Small Column Ion Exchange (SCIX) at the Savannah River Site (SRS). SCIX uses crystalline silicotitanate (CST) to sorb cesium to decontaminate a clarified salt solution. The passage of fine particles through the filter membranes in sufficient quantities has the potential to impact the downstream facilities. To determine the amount of fines passage, a contract was established with SpinTek Filtration to operate a 3-disk pilot scale unit with prototypic filter disk and various feeds and two different filter disk membranes. SpinTek evaluated a set of the baseline 0.5 micron filter disks as well as a set of 0.1 micron filter disks to determine the amount of fine particles that would pass the membrane and to determine the flux each set produced. The membrane on both disk sets is manufactured by the Pall Corporation (PMM 050). Each set of disks was run with three feed combinations: prototypically ground CST, CST plus monosodium titanate (MST), and CST, MST, plus Sludge Batch 6 (SB6) simulant. Throughout the testing, samples of the filtrate were collected, measured for turbidity, and sent back to SRNL for analysis to quantify the amount of fines that passed through the membrane. It should be noted that even though ground CST was tested, it will be transferred to the Defense Waste Processing Facility (DWPF) feed tank and is not expected to require filtration.

Herman, D.

2011-08-03T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Burning state recognition of rotary kiln using ELMs with heterogeneous features  

Science Conference Proceedings (OSTI)

Image based burning state recognition plays an important role in sintering process control of rotary kiln. Although many efforts on dealing with this problem have been made over the past years, the recognition performance cannot be satisfactory due to ... Keywords: Burning state, ELM, Eigen-flame image, Latent semantic analysis, Multivariate image analysis

Weitao Li; Dianhui Wang; Tianyou Chai

2013-02-01T23:59:59.000Z

202

Use of fan rig data for the understanding and prediction of fan broadband noise and noise changes due to a variable area nozzle.  

E-Print Network (OSTI)

??This thesis presents the results of the research component of this EngD, entitled Use of fan rig data for the understanding and prediction of fan… (more)

Deane, Eugene Pio

2009-01-01T23:59:59.000Z

203

A self-similar dynamics in viscous spheres  

E-Print Network (OSTI)

We study the evolution of radiating and viscous fluid spheres assuming an additional homothetic symmetry on the spherically simmetric space--time. We match a very simple solution to the symmetry equations with the exterior one (Vaidya). We then obtain a system of two ordinary differential equations which rule the dynamics, and find a self--similar collapse which is shear--free and with a barotropic equation of state. Considering a huge set of initial self--similar dynamics states, we work out a model with an acceptable physical behavior.

W. Barreto; J. Ovalle; B. Rodriguez

2005-08-12T23:59:59.000Z

204

Continuous injection of an inert gas through a drill rig for drilling into potentially hazardous areas  

DOE Patents (OSTI)

A drill rig for drilling in potentially hazardous areas includes a drill having conventional features such as a frame, a gear motor, gear box, and a drive. A hollow rotating shaft projects through the drive and frame. An auger, connected to the shaft is provided with a multiplicity of holes. An inert gas is supplied to the hollow shaft and directed from the rotating shaft to the holes in the auger. The inert gas flows down the hollow shaft, and then down the hollow auger, and out through the holes in the bottom of the auger into the potentially hazardous area.

McCormick, S.H.; Pigott, W.R.

1998-04-01T23:59:59.000Z

205

Passenger vehicle tire rolling resistance can be predicted from a flat-belt test rig  

Science Conference Proceedings (OSTI)

The rolling resistance of fifteen different types of tire was determined on-road by coastdown tests, using several vehicles variously fitted with 14 and 15 inch wheels. Corrections for tire pressure, and for external temperature, were deduced by data regression. The rolling resistance of the same tires was measured on a flat-belt tire test machine, and correction for tire pressure was determined in a like manner. In this paper, the results, in terms of the characteristic rolling resistance, are compared between rig and road. The various test procedures are discussed.

Ivens, J.

1989-01-01T23:59:59.000Z

206

Radioactive air emissions program notice of construction, rotary mode core-sampling truck and exhauster  

SciTech Connect

Efforts have been ongoing to obtain core samples from the contents of each of the Hanford Site`s 149 single-shell tanks (SSTs). The SSTs contain various amounts and combinations of liquid, sludge, and saltcake. Existing sampling equipment is unable to retrieve samples of hardened waste within established tank safety restrictions (particularly limits on temperature). A new rotary mode core-sampling system has been designed to sample tanks containing hardened wastes. The prominent feature of this new system is the use of a nitrogen gas purge. The nitrogen gas purge will cool the drill bit and prevent cross contamination of different waste layers in the tank. The nitrogen gas purge will also allow more complete sample recovery, by clearing cuttings that might otherwise obstruct the sampler or drill bit. Nitrogen was chosen over other compressed gases for its inherent safety. Many of the tanks to be sampled with the rotary mode core-sampling system are not actively ventilated, these tanks are operated at atmospheric pressure with passive (breather) high-efficiency particulate air (HEPA) filters. Unless a ventilation system of the proper capacity is used, addition of the nitrogen purge gas to SSTs will cause the tanks to pressurize. Additionally, the use of the rotary mode core-sampling system will generate aerosols and dusts potentially containing radioactive particles in the tank vapor space. Consequently, an exhauster will be required during operation of the rotary mode core-sampling system on SSTs to prevent tank pressurization and to control emissions. This exhauster will be required to be moved from tank farm to tank farm with the rotary mode core-sampling system.

Not Available

1993-05-01T23:59:59.000Z

207

Finding leading modes of a viscous free surface flow: An asymmetric ...  

Science Conference Proceedings (OSTI)

Viscous free surface flows, as encountered in various extrusion and coating ... boundaries and free surfaces, negligible shear stress by the adjacent air at.

208

Proper formulation of viscous dissipation for nonlinear waves in solids  

E-Print Network (OSTI)

In order to model nonlinear viscous dissipative motions in solids, acoustical physicists usually add terms linear in dot{E}, the material time derivative of the Lagrangian strain tensor E, to the elastic stress tensor sigma derived from the expansion to the third- (sometimes fourth-) order of the strain energy density e=e(trace(E), trace(E^2), trace(E^3)). Here, it is shown that this practice, which has been widely used in the past three decades or so, is physically wrong for at least two reasons, and that it should be corrected. One reason is that the elastic stress tensor sigma is not symmetric while dot{E) is symmetric, so that motions for which sigma + sigma^T 0 will give rise to elastic stresses which have no viscous pendant. Another reason is that dot{E} is frame-invariant, while sigma is not, so that an observer transformation would alter the elastic part of the total stress differently than it would alter the dissipative part, thereby violating the fundamental principle of material frame-indifference. These problems can have serious consequences for nonlinear shear wave propagation in soft solids, as seen here with an example of a kink in almost incompressible soft solids.

Michel Destrade; Giuseppe Saccomandi; Maurizio Vianello

2013-03-07T23:59:59.000Z

209

Advanced coal-fueled industrial cogeneration gas turbine system: Hot End Simulation Rig  

DOE Green Energy (OSTI)

This Hot End Simulation Rig (HESR) was an integral part of the overall Solar/METC program chartered to prove the technical, economic, an environmental feasibility of a coal-fueled gas turbine, for cogeneration applications. The program was to culminate in a test of a Solar Centaur Type H engine system operated on coal slurry fuel throughput the engine design operating range. This particular activity was designed to verify the performance of the Centaur Type H engine hot section materials in a coal-fired environment varying the amounts of alkali, ash, and sulfur in the coal to assess the material corrosion. Success in the program was dependent upon the satisfactory resolution of several key issues. Included was the control of hot end corrosion and erosion, necessary to ensure adequate operating life. The Hot End Simulation Rig addressed this important issue by exposing currently used hot section turbine alloys, alternate alloys, and commercially available advanced protective coating systems to a representative coal-fueled environment at turbine inlet temperatures typical of Solar`s Centaur Type H. Turbine hot end components which would experience material degradation include the transition duct from the combustor outlet to the turbine inlet, the shroud, nozzles, and blades. A ceramic candle filter vessel was included in the system as the particulate removal device for the HESR. In addition to turbine material testing, the candle material was exposed and evaluated. Long-term testing was intended to sufficiently characterize the performance of these materials for the turbine.

Galica, M.A.

1994-02-01T23:59:59.000Z

210

Specific features in building hardware-software complexes operating in real-time: An example of test rig used in periodic tests of reducers  

Science Conference Proceedings (OSTI)

Test rig for periodic tests of reducers is involved as an example to discuss specific features in building automatic test systems (ATS); the test rig is designed at ZAO NPP MIKS Engineering. A certain approach to ATS design based on adaptation of universal ...

A. A. Urakov; M. A. Rylov; D. S. Shutov; P. G. Dorofeev

2011-05-01T23:59:59.000Z

211

A discontinuous Galerkin method for gravity-driven viscous fingering instabilities in porous media  

Science Conference Proceedings (OSTI)

We present a new approach to the simulation of gravity-driven viscous fingering instabilities in porous media flow. These instabilities play a very important role during carbon sequestration processes in brine aquifers. Our approach is based on a nonlinear ... Keywords: Discontinuous Galerkin method, Gravity-driven flows, Porous media flows, Viscous fingering

G. Scovazzi; A. Gerstenberger; S. S. Collis

2013-01-01T23:59:59.000Z

212

An Auto-Adaptive Multidomain Spectral Technique for Linear Stability Analysis: Application to Viscous Compressible Flows  

Science Conference Proceedings (OSTI)

An auto-adaptive multidomain pseudo-spectral technique is considered in order to solve the linear stability problem of viscous compressible flows. Both the locations of the interfaces and the parameters of the mappings in each subdomain are adapted by ... Keywords: Rayleigh–Taylor instability, compressible viscous flows, spectral multidomain method

Eric Serre; Serge Gauthier

2002-12-01T23:59:59.000Z

213

The Feasibility of Natural Gas as a Fuel Source for Modern Land-Based Drilling Rigs  

E-Print Network (OSTI)

The purpose of this study is to determine the feasibility of replacing diesel with natural gas as a fuel source for modern drilling rigs. More specifically, this thesis (1) establishes a control baseline by examining operational characteristics (response, fuel usage, and cost) of an existing diesel-powered land rig during the drilling of a well in the Haynesville Shale; (2) estimates operational characteristics of a natural gas engine under identical conditions; and (3) draws a comparison between diesel and natural gas engines, determining the advantages and disadvantages of those fuel sources in drilling applications. Results suggest that diesel engines respond to transient loads very effectively because of their inherently higher torque, especially when compared with natural gas engines of a similar power rating. Regarding fuel consumption, the engines running on diesel for this study were more efficient than on natural gas. On a per-Btu basis, the natural gas engines consumed nearly twice as much energy in drilling the same well. However, because of the low price of natural gas, the total cost of fuel to drill the well was lowered by approximately 54%, or 37,000 USD. Based on the results, it is possible to infer that the use of natural gas engines in drilling environments is feasible, and in most cases, an economical and environmental advantage. First, when compared with diesel, natural gas is a cleaner fuel with less negative impact on the environment. Second, fuel cost can be reduced by approximately half with a natural gas engine. On the other hand, natural gas as a fuel becomes less practical because of challenges associated with transporting and storing a gas. In fact, this difficulty is the main obstacle for the use of natural gas in drilling environments. In conclusion, because of its minimal drawback on operations, it is recommended that in situations where natural gas is readily available near current market prices, natural gas engines should be utilized because of the cost savings and reduced environmental impact. In all other cases, particularly where transport and storage costs encroach on the cost benefit, it may still be advantageous to continue powering rigs with diesel because of its ease of use.

Nunn, Andrew Howard

2011-12-01T23:59:59.000Z

214

Thermal acidization and recovery process for recovering viscous petroleum  

DOE Patents (OSTI)

A thermal acidization and recovery process for increasing production of heavy viscous petroleum crude oil and synthetic fuels from subterranean hydrocarbon formations containing clay particles creating adverse permeability effects is described. The method comprises injecting a thermal vapor stream through a well bore penetrating such formations to clean the formation face of hydrocarbonaceous materials which restrict the flow of fluids into the petroleum-bearing formation. Vaporized hydrogen chloride is then injected simultaneously to react with calcium and magnesium salts in the formation surrounding the bore hole to form water soluble chloride salts. Vaporized hydrogen fluoride is then injected simultaneously with its thermal vapor to dissolve water-sensitive clay particles thus increasing permeability. Thereafter, the thermal vapors are injected until the formation is sufficiently heated to permit increased recovery rates of the petroleum.

Poston, Robert S. (Winter Park, FL)

1984-01-01T23:59:59.000Z

215

Thermodynamics of viscous dark energy in an RSII braneworld  

E-Print Network (OSTI)

We show that for an RSII braneworld filled with interacting viscous dark energy and dark matter, one can always rewrite the Friedmann equation in the form of the first law of thermodynamics, $dE=T_hdS_h+WdV$, at apparent horizon. In addition, the generalized second law of thermodynamics can fulfilled in a region enclosed by the apparent horizon on the brane for both constant and time variable 5-dynamical Newton's constant $G_5$. These results hold regardless of the specific form of the dark energy. Our study further support that in an accelerating universe with spatial curvature, the apparent horizon is a physical boundary from the thermodynamical point of view.

M. R. Setare; A. Sheykhi

2011-03-05T23:59:59.000Z

216

Internal combustion engine with rotary valve assembly having variable intake valve timing  

DOE Patents (OSTI)

An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions.

Hansen, Craig N. (Eden Prairie, MN); Cross, Paul C. (Shorewood, MN)

1995-01-01T23:59:59.000Z

217

Mathematical model and the dynamic simulation of an electromechanical rotary device. [SLENOID  

SciTech Connect

A mathematical model of an electro-mechanical rotary device is presented. This device contains a rotor, stator, and two spring-loaded arms which restrict the rotor motion. The desired action is the alignment of the rotor and the consequent movement of the arms. The SLENOID computer program for calculating the magnetic torque, air gap permeance, spring torque, damping effects, and motion of the rotor and arms is described. (LCL)

Emergy, J.D.

1980-02-01T23:59:59.000Z

218

Demonstration of a rotary separator for two-phase brine and steam flows. Final report  

DOE Green Energy (OSTI)

The application of a two-phase rotary separator for geothermal energy conversion was demonstrated. Laboratory tests were conducted with clean water and steam at Biphase Energy Systems, Inc., Santa Monica, California. Field tests were conducted at the Union Oil Co., Tow No. 1 wellsite near Brawley, California. The system tested consisted of the major components of a total flow rotary separator/turbine conversion system. A nozzle converted the brine wellhead enthalpy to two-phase flow kinetic by impinging the nozzle flow tangentially on the inside of the separator. The flow was therefore subjected to the high centrifugal force field in the separator. This caused the liquid phase to collect as a film on the separator drum with very little energy loss. The steam was allowed to flow radially inward to the central steam discharge. Potable water was obtained by condensing the steam exhaust. The brine collection system converted the liquid film kinetic energy to static pressure head. The system was operated for 116 hours in a high salinity environment (115,000 ppM TDS). The system operated properly with no adverse effects from solids precipitation or scale buildup. The rotary separator produced separate flows of pure liquid and steam of greater than 99.5% quality.

Cerini, D.J.

1978-01-01T23:59:59.000Z

219

Modeling of the solids transportation within an industrial rotary dryer: A simple model  

SciTech Connect

To better understand the underlying phenomena taking place in an industrial rotary dryer and to determine the optimum operating conditions, a simulator in which the solids transportation, the gas flow, and the heat and mass transfer are modeled is currently being developed. This paper describes the use of interactive perfect mixers in series to model the solids transportation within an industrial rotary dryer, on the basis of an experimental residence time distribution curve (RTD). Two simple models are proposed: a series of perfect well-mixed interacting tanks and a modified Cholette-Cloutier model. The first model is not able to account for the nonideal behavior of the solids transportation in the rotary dryer. To account for the characteristic extended tail of the RTD curves observed in industrial dryers, in a second model, the solid phase is divided between an active and a dead zone. This model, with 36 cells and 25% of the volume occupied by the dead zones, modeled very well the industrial RTD curve. In addition, the model produces bed depth and axial velocity profiles that are consistent with those reported in the literature.

Duchesne, C.; Thibault, J.; Bazin, C. [Laval Univ., Sainte-Foy, Quebec (Canada)] [Laval Univ., Sainte-Foy, Quebec (Canada)

1996-07-01T23:59:59.000Z

220

DEVELOPMENT OF SHALLOW VISCOUS OIL RESERVES IN NORTH SLOPE  

SciTech Connect

North Slope of Alaska has huge oil deposits in heavy oil reservoirs such as Ugnu, West Sak and Shrader Bluff etc. The viscosity of the last two reservoir oils vary from {approx}30 cp to {approx}3000 cp and the amount in the range of 10-20 billion barrels. High oil viscosity and low formation strength impose problems to high recovery and well productivity. Water-alternate-gas injection processes can be effective for the lower viscosity end of these deposits in West Sak and Shrader Bluff. Several gas streams are available in the North Slope containing NGL and CO{sub 2} (a greenhouse gas). The goal of this research is to develop tools to find optimum solvent, injection schedule and well-architecture for a WAG process in North Slope shallow sand viscous oil reservoirs. In the last quarter, we added numerical solution along streamline subroutines to our streamline compositional simulator. The WAG injection algorithms are being developed. We studied the wettability of the reservoir oil and formulated a four-phase relative permeability model based on two-phase relative permeabilities. The effect of new relative permeability formulations on a five-spot pattern WAG recovery was evaluated. Effect of horizontal wells on pattern sweep has been initiated. A model quarter five-spot experiment is being designed. Plans for the next quarter includes modeling of WAG injection in streamline based simulation, evaluation of complex well-architecture and design of model quarter five-spot experiment.

Kishore K. Mohanty

2003-07-01T23:59:59.000Z

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221

DEVELOPMENT OF SHALLOW VISCOUS OIL RESERVES IN NORTH SLOPE  

Science Conference Proceedings (OSTI)

North Slope of Alaska has huge oil deposits in heavy oil reservoirs such as Ugnu, West Sak and Shrader Bluff etc. The viscosity of the last two reservoir oils vary from {approx}30 cp to {approx}3000 cp and the amount in the range of 10-20 billion barrels. High oil viscosity and low formation strength impose problems to high recovery and well productivity. Water-alternate-gas injection processes can be effective for the lower viscosity end of these deposits in West Sak and Shrader Bluff. Several gas streams are available in the North Slope containing NGL and CO{sub 2} (a greenhouse gas). The goal of this research is to develop tools to find optimum solvent, injection schedule and well-architecture for a WAG process in North Slope shallow sand viscous oil reservoirs. In the last quarter, we have developed streamline generation and convection subroutines for miscible gas injection. The WAG injection algorithms are being developed. We formulated a four-phase relative permeability model based on two-phase relative permeabilities. The new relative permeability formulations are being incorporated into the simulator. Wettabilities and relative permeabilities are being measured. Plans for the next quarter includes modeling of WAG injection in streamline based simulation, relative permeability studies with cores, incorporation of complex well-architecture.

Kishore K. Mohanty

2003-07-01T23:59:59.000Z

222

Beam energy scan using a viscous hydro+cascade model  

E-Print Network (OSTI)

Following the experimental program at BNL RHIC, we perform a similar "energy scan" using 3+1D viscous hydrodynamics coupled to the UrQMD hadron cascade, and study the collision energy dependence of pion and kaon rapidity distributions and $m_T$-spectra, as well as charged hadron elliptic flow. To this aim the equation of state for finite baryon density from a Chiral model coupled to the Polyakov loop is employed for hydrodynamic stage. 3D initial conditions from UrQMD are used to study gradual deviation from boost-invariant scaling flow. We find that the inclusion of shear viscosity in the hydrodynamic stage of evolution consistently improves the description of the data for Pb-Pb collisions at CERN SPS, as well as of the elliptic flow measurements for Au-Au collisions in the Beam Energy Scan (BES) program at BNL RHIC. The suggested value of shear viscosity is $\\eta/s\\ge0.2$ for $\\sqrt{s_{NN}}=6.3\\dots39$ GeV.

Karpenko, Iu A; Huovinen, P; Petersen, H

2013-01-01T23:59:59.000Z

223

The Reflection of a Stationary Gravity Wave by a Viscous Boundary Layer  

Science Conference Proceedings (OSTI)

The backward reflection of a stationary gravity wave (GW) propagating toward the ground is examined in the linear viscous case and for large Reynolds numbers (Re). In this case, the stationary GW presents a critical level at the ground because ...

François Lott

2007-09-01T23:59:59.000Z

224

On the criticality of viscous Hamilton-Jacobi equations Naoyuki Ichihara (Hiroshima University)  

E-Print Network (OSTI)

On the criticality of viscous Hamilton-Jacobi equations Naoyuki Ichihara (Hiroshima University. Email: naoyuki@hiroshima-u.ac.jp. Supported in part by JSPS KAKENHI Grant Number 24740089. 1 #12

Ishii, Hitoshi

225

A Blow-up Criterion for Two Dimensional Compressible Viscous Heat-Conductive Flows  

E-Print Network (OSTI)

We establish a blow-up criterion in terms of the upper bound of the density and temperature for the strong solution to 2D compressible viscous heat-conductive flows. The initial vacuum is allowed.

Fang, Daoyuan; Zhang, Ting

2011-01-01T23:59:59.000Z

226

Adiabatic and Viscous Simulations of Symmetric Instability: Structure, Evolution, and Energetics  

Science Conference Proceedings (OSTI)

This paper reports on simulations of dry-adiabatic and viscous symmetric instability circulations with a two-dimensional research version of the French Weather Service Limited Area Model PERIDOT. The simulations of an idealized two-dimensional ...

V. Ducrocq

1993-01-01T23:59:59.000Z

227

Integrated Status and Effectiveness Monitoring Program - Entiat River Snorkel Surveys and Rotary Screw Trap, 2007.  

DOE Green Energy (OSTI)

The USFWS Mid-Columbia River Fishery Resource Office conducted snorkel surveys at 24 sites during the summer and fall periods of 2006 survey periods as part of the Integrated Status and Effectiveness Monitoring Program in the Entiat River. A total of 37,938 fish from 15 species/genera and an unknown category were enumerated. Chinook salmon were the overall most common fish observed and comprised 15% of fish enumerated followed by rainbow trout (10%) and mountain whitefish (7%). Day surveys were conducted during the summer period 2007 (August), while night surveys were conducted during the fall 2007 (October) surveys. The USFWS Mid-Columbia River Fishery Resource Office (MCFRO) operated two rotary screw traps on the Entiat River as part of the Integrated Status and Effectiveness Monitoring Program (ISEMP) program from August through November of 2007. Along with the smolt traps, juvenile emigrants were also captured at remote locations throughout the Entiat watershed and its major tributary, the Mad River. A total of 999 wild Oncorhynchus mykiss and 5,107 wild run O. tshawytscha were PIT tagged during the study period. Rotary screw trap efficiencies averaged 22.3% for juvenile O. tshawytscha and 9.0% for juvenile O. mykiss. Rotary screw traps operated 7 days a week and remote capture operations were conducted when flow and temperature regimes permitted. This is third annual progress report to Bonneville Power Administration for the snorkel surveys conducted in the Entiat River as related to long-term effectiveness monitoring of restoration programs in this watershed. The objective of this study is to monitor the fish habitat utilization of planned in-stream restoration efforts in the Entiat River by conducting pre- and post-construction snorkel surveys at selected treatment and control sites.

Nelle, R.D.

2008-01-01T23:59:59.000Z

228

Obtaining pressures in the 10?5 Pa range with oil?sealed rotary vacuum pumps  

Science Conference Proceedings (OSTI)

Trapped oil?sealed rotary pumps are usually considered capable of ultimate pressures no lower than about 10?3 Pa. Experiments are described which confirm that most of this residual gas originates from air dissolved in the pump oil. Replacement of the air with a less soluble gas (helium) or an easily trapped gas (carbon dioxide) is shown to give a useful reduction in ultimate pressure and to reduce the oxygen partial pressure to essentially zero. Operation with completely degassed oil is shown to give ultimate pressures in the 10?5 Pa range. The design of pumps based on these principles is discussed.

B. R. F. Kendall

1982-01-01T23:59:59.000Z

229

On the use of the parabolic concentration profile assumption for a rotary desiccant dehumidifier  

SciTech Connect

The current work describes a model for a desiccant dehumidifier which uses a parabolic concentration profile assumption to model the diffusion resistance inside the desiccant particle. The relative merits of the parabolic concentration profile model compared with widely utilized rotary desiccant wheel models are discussed. The periodic steady-state parabolic concentration profile model developed is efficient and can accommodate a variety of materials. These features make it an excellent tool for design studies requiring repetitive desiccant wheel simulations. A quartic concentration profile assumption was also investigated which yielded a 2.8 percent average improvement in prediction error over the parabolic model.

Chant, E.E. [Univ. of Turabo, Gurabo (Puerto Rico); Jeter, S.M. [Georgia Inst. of Technology, Atlanta, GA (United States). George W. Woodruff School of Mechanical Engineering

1995-02-01T23:59:59.000Z

230

Experimental studies of heat and mass exchange in parallel-passage rotary desiccant dehumidifiers for solar cooling applications  

DOE Green Energy (OSTI)

This report presents results of work done to experimentally characterize the performance of rotary desiccant dehumidifiers and to develop and validate analytical methods for evaluating their performance in air-conditioning systems. A facility, the Cyclic Test Facility, and a test-and-analysis procedure were developed to evaluate the performance of the rotary dehumidifiers. Experiments were performed to develop a basic understanding of the simultaneous heat- and mass-transfer processes in the dehumidifiers. Two test articles were tested under cyclic operation to characterize their performance. Detailed accounts of the Cyclic Test Facility, its hardware and instrumentation, the two test articles, and data reduction and analysis methods are provided. The data provide an engineering data base for evaluating rotary desiccant dehumidifiers for cooling applications. 46 refs., 26 figs., 3 tabs.

Bharathan, D.; Parsons, J.M.; Maclaine-cross, I.L.

1987-11-01T23:59:59.000Z

231

Design and Analysis of a Test Rig for Modeling the Bit/Formation Interface in Petroleum Drilling Applications  

E-Print Network (OSTI)

Equipment failure and well deviations are prevailing contributors to production delays within the petroleum industry. Particular monetary focus is given to the drilling operations of wells to overcome these deficits, in order to extract natural resources as efficiently, and as safely, as possible. The research presented here focuses on minimizing vibrations of the drill string near the bottom-hole assembly (BHA) by identifying the cause of external forcing on the drillstring in vertical and horizontal wells and measuring the effects of various factors on the stability of perturbations on the system. A test rig concept has been developed to accurately measure the interaction forces and torques between the bit, formation and fluids during drilling in order to clearly define a bit/formation interface law (BFIL) for the purpose vibrational analysis. As a secondary function, the rig will be able to measure the potential inputs to a drilling simulation code that can be used to model drillstring vibrations. All notable quantities will be measured including torque on bit (TOB), weight on bit (WOB), lateral impact loads (LIL), formation stiffness, bit specific properties, fluid damping coefficients and rate of penetration (ROP). The conceptual design has been analyzed and refined, in detail, to verify its operational integrity and range of measurement error. The operational envelope of the rig is such that a drill bit of up to 8 ½ inches in diameter can be effectively tested at desired operational parameters (WOB: 0-55,000 lbf, RPM: 60-200) with various rock formations and multiple fluid types. Future use and design possibilities are also discussed to enhance the functionality of the rig and the potential for further research in the area of oil and gas drilling and vibrational modeling.

Wilson, Joshua Kyle

2013-05-01T23:59:59.000Z

232

A computational study of highly viscous impinging jets  

SciTech Connect

Two commercially-available computational fluid dynamics codes, FIDAP (Fluent, Inc., Lebanon, NH) and FLOW-3D (Flow Science, Inc., Los Alamos, NM), were used to simulate the landing region of jets of highly viscous fluids impinging on flat surfaces. The volume-of-fluid method was combined with finite difference and finite element approaches to predict the jet behavior. Several computational models with varying degrees of physical realism were developed, and the results were compared with experimental observations. In experiments, the jet exhibited several complex behaviors. As soon as it exited the nozzle, the jet began to neck down and become narrower. When it impacted the solid surface, the jet developed an instability near the impact point and buckled to the side. This buckling became a spiraling motion, and the jet spiraled about the impact point. As the jet spiraled around, a cone-shaped pile was build up which eventually became unstable and slumped to the side. While all of these behaviors were occurring, air bubbles, or voids, were being entrapped in the fluid pool. The results obtained from the FLOW-3D models more closely matched the behavior of real jets than the results obtained from /the FIDAP models. Most of the FLOW-3D models predicted all of the significant jet behaviors observed in experiments: necking, buckling, spiraling, slumping, and void entrapment. All of the FIDAP models predicted that the jet would buckle relatively far from the point of impact, whereas the experimentally observed jet behavior indicates that the jets buckle much nearer the impact point. Furthermore, it was shown that FIDAP is incapable of incorporating heat transfer effects into the model, making it unsuitable for this work.

Silva, M.W. [Univ. of Texas, Austin, TX (United States). Dept. of Mechanical Engineering

1998-11-01T23:59:59.000Z

233

ALTERNATE POWER AND ENERGY STORAGE/REUSE FOR DRILLING RIGS: REDUCED COST AND LOWER EMISSIONS PROVIDE LOWER FOOTPRINT FOR DRILLING OPERATIONS  

E-Print Network (OSTI)

Diesel engines operating the rig pose the problems of low efficiency and large amount of emissions. In addition the rig power requirements vary a lot with time and ongoing operation. Therefore it is in the best interest of operators to research on alternate drilling energy sources which can make entire drilling process economic and environmentally friendly. One of the major ways to reduce the footprint of drilling operations is to provide more efficient power sources for drilling operations. There are various sources of alternate energy storage/reuse. A quantitative comparison of physical size and economics shows that rigs powered by the electrical grid can provide lower cost operations, emit fewer emissions, are quieter, and have a smaller surface footprint than conventional diesel powered drilling. This thesis describes a study to evaluate the feasibility of adopting technology to reduce the size of the power generating equipment on drilling rigs and to provide ?peak shaving? energy through the new energy generating and energy storage devices such as flywheels. An energy audit was conducted on a new generation light weight Huisman LOC 250 rig drilling in South Texas to gather comprehensive time stamped drilling data. A study of emissions while drilling operation was also conducted during the audit. The data was analyzed using MATLAB and compared to a theoretical energy audit. The study showed that it is possible to remove peaks of rig power requirement by a flywheel kinetic energy recovery and storage (KERS) system and that linking to the electrical grid would supply sufficient power to operate the rig normally. Both the link to the grid and the KERS system would fit within a standard ISO container. A cost benefit analysis of the containerized system to transfer grid power to a rig, coupled with the KERS indicated that such a design had the potential to save more than $10,000 per week of drilling operations with significantly lower emissions, quieter operation, and smaller size well pad.

Verma, Ankit

2009-05-01T23:59:59.000Z

234

COMPENDIUM OF COMPLETED TESTING IN SUPPORT OF ROTARY MICROFILTRATION AT SAVANNAH RIVER SITE AND HANFORD  

SciTech Connect

This report presents a chronological summary of previous technology development efforts concerning the rotary microfiltration (RMF) unit from SpinTek{trademark}. Rotary microfiltration has been developed for high radiation application over the last decades as one of the optional filtration techniques for supplemental treatment. Supplemental treatment includes a near- or in-tank solids separation and subsequent cesium removal unit, followed by an immobilization technique; this includes options such as steam reforming, bulk vitrification or cast stone (grout). The main difference between RMF and standard cross flow filtration (CFF) is the disconnection of filtrate flux from feed velocity; i.e., filtrate flux is only dependent on transmembrane pressure, filter fouling and temperature. These efforts have been supported by the U.S. Department of Energy (DOE), Office of Cleanup Technologies since the 1990s by their Environmental Management Program (currently EM-31). In order to appropriately address future testing needs, a compilation of the relevant previous testing reports was essential. This compendium does not intend to cover all of the presentations/reports that were produced over the last decades but focuses on those of relevance for developing an RMF unit fit for deployment at the Hanford site. The report is split into three parts: (1) an introductory overview, (2) Figure 1 graphically covering the main development steps and its key players and (3) a more detailed table of the citations and brief descriptions of results and recommendations.

HUBER HJ

2011-05-24T23:59:59.000Z

235

Baseline Design Compliance Matrix for the Rotary Mode Core Sampling System  

SciTech Connect

The purpose of the design compliance matrix (DCM) is to provide a single-source document of all design requirements associated with the fifteen subsystems that make up the rotary mode core sampling (RMCS) system. It is intended to be the baseline requirement document for the RMCS system and to be used in governing all future design and design verification activities associated with it. This document is the DCM for the RMCS system used on Hanford single-shell radioactive waste storage tanks. This includes the Exhauster System, Rotary Mode Core Sample Trucks, Universal Sampling System, Diesel Generator System, Distribution Trailer, X-Ray Cart System, Breathing Air Compressor, Nitrogen Supply Trailer, Casks and Cask Truck, Service Trailer, Core Sampling Riser Equipment, Core Sampling Support Trucks, Foot Clamp, Ramps and Platforms and Purged Camera System. Excluded items are tools such as light plants and light stands. Other items such as the breather inlet filter are covered by a different design baseline. In this case, the inlet breather filter is covered by the Tank Farms Design Compliance Matrix.

LECHELT, J.A.

2000-10-17T23:59:59.000Z

236

Loads on Tie-Down Systems for Floating Drilling Rigs during Hurricane Conditions  

E-Print Network (OSTI)

Tie-down systems are used to fasten drilling rigs to the deck of offshore structures during harsh environmental conditions such as hurricanes. During Hurricane Ivan (2004) and Katrina (2005), a number of offshore structures were moved and several tie-down systems were damaged. In the present study, the reaction force and connection capacity of tie-down systems for a TLP and SPAR are investigated. The environmental conditions are taken from the API Bulletin 2INT-MET which has been updated after several major storms during 2004-2005. The hydrodynamic coefficients of the TLP and SPAR are obtained using a 3D diffraction/radiation panel method. The motions of the TLP and SPAR are then simulated in the time domain by using the hull-mooring-riser coupled dynamic analysis tool CHARM3D. Based on the simulated motion and acceleration time series, the inertial and gravity loads on derrick and skid base footing are calculated. In addition to the inertial-gravity loads, wind forces exerted on the derrick are also calculated. All the external forces and resultant hull motions are simulated for 100-year, 200-year and 1000-year storms to observe the derrick structural integrity with increasing environmental intensity. Various environmental headings are also considered to find the maximum reaction forces. In the present method, the phase differences between gravity-inertia forces and wind forces are taken into consideration to obtain more realistic loads on derrick and skid base footings. This research shows that the maximum and minimum load values are appreciably higher for the SPAR. In addition, the direction of external forces is also important to determine maximum reaction forces on footings. The capacities of the clamps in slip, bolt tension, and bolt shear can be also analyzed using the resultant data to provide guidance on appropriate design values.

Bae, Yoon Hyeok

2009-05-01T23:59:59.000Z

237

DEVELOPMENT OF SHALLOW VISCOUS OIL RESERVES IN NORTH SLOPE  

Science Conference Proceedings (OSTI)

North Slope of Alaska has huge oil deposits in heavy oil reservoirs such as Ugnu, West Sak and Shrader Bluff etc. The viscosity of the last two reservoir oils vary from {approx}30 cp to {approx}3000 cp and the amount in the range of 10-20 billion barrels. High oil viscosity and low formation strength impose problems to high recovery and well productivity. Water-alternate-gas injection processes can be effective for the lower viscosity end of these deposits in West Sak and Shrader Bluff. Several gas streams are available in the North Slope containing NGL and CO{sub 2} (a greenhouse gas). The goal of this research is to develop tools to find optimum solvent, injection schedule and well-architecture for a WAG process in North Slope shallow sand viscous oil reservoirs. Coreflood, quarter 5-spot study, compositional simulation, wettability, relative permeability study and streamline-based simulation were conducted in this project. 1D compositional simulation results agree reasonably well with those of the slim tube experiments. Injection of CO{sub 2}-NGL is preferable over that of PBG-NGL. MME is sensitive to pressure (in the range of 1300-1800 psi) for the injection of PBG-NGL, but not for CO{sub 2}-NGL. Three hydrocarbon phases form in this pressure range. As the mean thickness of the adsorbed organic layer on minerals increases, the oil-water contact angle increases. The adsorbed organic films left behind after extraction of oil by common aromatic solvents used in core studies, such as toluene and decalin, are thinner than those left behind by non-aromatic solvents, such as cyclohexane. The force of adhesion for minerals aged with just the asphaltene fraction is similar to that of the whole oil implying that asphaltenes are responsible for the mixed-wettability in this reservoir. A new relative permeability model for a four-phase, mixed-wet system has been proposed. A streamline module is developed which can be incorporated in an existing finite-difference based compositional simulator to model water flood, gas flood and WAG flood. Horizontal wells increase well deliverability over vertical wells, but sweep efficiency can decrease. The well performance depends on the well length, position, heterogeneity, and viscosity ratio. The productivity increase due to electromagnetic heating is a function of power intensity, flow rate, and frequency etc. The productivity of a well can be doubled by electromagnetic heating. A high-pressure quarter 5-spot model has been constructed to evaluate the sweep efficiency of miscible WAG floods. WAG displacement reduces bypassing compared to gas floods and improves oil recovery in cores. As the WAG ratio decreased and slug size increased, oil recovery increased. Oil was recovered faster with increased slug size and decreased WAG ratio in the simulations for field cases studied.

Kishore K. Mohanty

2004-12-01T23:59:59.000Z

238

Comparison of the performance of open cycle air conditioners utilizing rotary desiccant dehumidifiers  

DOE Green Energy (OSTI)

This paper presents the results of an investigation of open cycle cooling systems using rotary desiccant dehumidifiers. Three systems, the ventilation, recirculation, and Dunkle cycles have been modeled. The performance of these systems coupled with an air-based solar system has been determined using TRNSYS simulations of system operation in four representative US climates. The system COP, fraction of the total cooling load met by the desiccant system, and fraction of the thermal energy provided by solar energy are compared. An assessment of the effect of climate and system parameters on the relative performance of the three system configurations is made. It is shown that in order to meet residential loads of 7 to 11 kW with a COP on the order of unity, systems with high effectiveness must be employed. These systems were also found to perform well when operated solely with a solar thermal input.

Jurinak, J.J.; Beckman, W.A.

1985-01-01T23:59:59.000Z

239

An Advanced Solar-Powered Rotary Solid Adsorption Refrigerator with High Performance  

E-Print Network (OSTI)

In this paper, according to practical consideration, a new solar powered rotary solid adsorption refrigerator system adopting activated carbon fibre + ethanol as its adsorption pair has been designed with higher performance. Moreover, the principle of the refrigeration cycle, different components of the machine, selection of working pairs and feasible theory analysis of the refrigeration system all have been presented in detail. In addition, it shows that the new refrigerator has many great advantages including a simple structure, fast refrigeration, higher thermodynamic coefficient, friendly to the atmospheric environment, etc. This paper explains that the refrigerating process is constant, which has a promising potential for competing the 'intermittent' cycle reported before. Through improving the refrigerant performance of heat and mass transfer in the adsorbent bed, the refrigeration cycle has been advanced from the aspect of utilization of the thermal energy from low-temperature level resources. In addition, it is shown that the commercial solar powered refrigerator will be existent in the near future.

Zheng, A.; Gu, J.

2006-01-01T23:59:59.000Z

240

Control schemes for an industrial rotary calciner with a heat shield around the combustion zone  

SciTech Connect

Soda ash (sodium carbonate) is produced by calcining natural trona ore (sodium sesquicarbonate) in rotary calciners. Shell overheating, the consequent deformation of the calciner shell, and heat loss are frequently encountered problems during this operation. Installation of a concentric, metallic heat shield around the calciner`s combustion zone can help to reduce the shell temperature and recover some of the energy that would otherwise be lost. Another problem often encountered is the deterioration of product quality when the system inputs deviate from their design rates. A mathematical model of the calciner with a heat shield is used to design different control schemes in order to maintain the product quality. Performance of the designed control schemes is demonstrated via computer simulation.

Ciftci, S.; Kim, N.K. [Michigan Technological Univ., Houghton, MI (United States). Dept. of Chemical Engineering] [Michigan Technological Univ., Houghton, MI (United States). Dept. of Chemical Engineering

1999-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Method and apparatus for maximizing throughput of indirectly heated rotary kilns  

DOE Patents (OSTI)

An apparatus and method for achieving improved throughput capacity of indirectly heated rotary kilns used to produce pyrolysis products such as shale oils or coal oils that are susceptible to decomposition by high kiln wall temperatures is disclosed. High throughput is achieved by firing the kiln such that optimum wall temperatures are maintained beginning at the point where the materials enter the heating section of the kiln and extending to the point where the materials leave the heated section. Multiple high velocity burners are arranged such that combustion products directly impact on the area of the kiln wall covered internally by the solid material being heated. Firing rates for the burners are controlled to maintain optimum wall temperatures.

Coates, Ralph L; Smoot, L. Douglas; Hatfield, Kent E

2012-10-30T23:59:59.000Z

242

Stable five axes cryogenic photoemission manipulator without a differentially pumped rotary feedthrough  

Science Conference Proceedings (OSTI)

We report on the design and construction of an ultrahigh vacuum compatible cryogenic manipulator for angle resolved photoemission spectroscopy. Unlike designs that have been used so far, our design allows five motions (three translational and two angular) without a differentially pumped rotary feedthrough. The design greatly reduces the sample motion upon rotation, which is crucial in automatic data acquisition over a large area in the momentum space. The constructed manipulator shows smooth motions in vacuum and the lowest temperature it could reach is about 8 K at the sample position. Angular reproducibilities are found to be about 0.02 deg. for both of the angular motions. The wobbling motion from the rotation around the vertical rotation axis is found to be virtually nonexistent (less than 0.1 mm)

Kim, Bum Joon; Kim, Hyeong-Do; Cho, Deok-Yong; Kim, Myongjin; Oh, S.-J.; Kim, Changyoung [School of Physics and Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-742 (Korea, Republic of); Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); School of Physics and Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-742 (Korea, Republic of); Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); School of Physics and Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-742 (Korea, Republic of); Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749 (Korea, Republic of)

2005-06-15T23:59:59.000Z

243

Unsteady-state material balance model for a continuous rotary dissolver  

Science Conference Proceedings (OSTI)

The unsteady-state continuous rotary dissolver material balance code (USSCRD) is a useful tool with which to study the performance of the rotary dissolver under a wide variety of operating conditions. The code does stepwise continuous material balance calculations around each dissolver stage and the digester tanks. Output from the code consists of plots and tabular information on the stagewise concentration profiles of UO{sub 2}, PuO{sub 2}, fission products, Pu(NO{sub 3}){sub 4}, UO{sub 2}(NO{sub 3}){sub 2}, fission product nitrates, HNO{sub 3}, H{sub 2}O, stainless steel, total particulate, and total fuel in pins. Other information about material transfers, stagewise liquid volume, material inventory, and dissolution performance is also provided. This report describes the development of the code, its limitations, key operating parameters, usage procedures, and the results of the analysis of several sets of operating conditions. Of primary importance in this work was the estimation of the steady-state heavy metal inventory in a 0.5-t/d dissolver drum. Values ranging from {similar_to}12 to >150 kg of U + Pu were obtained for a variety of operating conditions. Realistically, inventories are expected to be near the lower end of this range. Study of the variation of operating parameters showed significant effects on dissolver product composition from intermittent solids feed. Other observations indicated that the cycle times for the digesters and shear feed should be closely coupled in order to avoid potential problems with off-specification product. 19 references, 14 tables.

Lewis, B.E.

1984-09-01T23:59:59.000Z

244

Viscous potential free-surface flows in a fluid layer of finite depth  

E-Print Network (OSTI)

It is shown how to model weakly dissipative free-surface flows using the classical potential flow approach. The Helmholtz-Leray decomposition is applied to the linearized 3D Navier-Stokes equations. The governing equations are treated using Fourier--Laplace transforms. We show how to express the vortical component of the velocity only in terms of the potential and free-surface elevation. A new predominant nonlocal viscous term is derived in the bottom kinematic boundary condition. The resulting formulation is simple and does not involve any correction procedure as in previous viscous potential flow theories [Joseph2004]. Corresponding long wave model equations are derived.

Denys Dutykh; Frederic Dias

2007-05-09T23:59:59.000Z

245

Experimental evaluation of a metal-mesh bearing damper in a high speed test rig  

E-Print Network (OSTI)

Metal mesh is a commercially available material used in many applications including seals, heat shields, filters, gaskets, aircraft engine mounts, and vibration absorbers. This material has been tested in the Turbomachinery Laboratory at Texas A&M University (TAMU) as a bearing damper in a rotordynamic test rig. The test facility was originally used to support the design of a turboprop engine at TAMU, developing squirrel cage bearing supports and squeeze film dampers for both the gas generator and power turbine rotors. To design the metal mesh damper, static stiffness and dynamic rap test measurements were first made on metal mesh samples in a specially designed non-rotating test fixture. These property tests were performed on samples of various densities and press fits. One sample was also tested in an Instron machine as an ancillary and redundant way to determine the stiffness. Using the stiffness test results and equations derived by a previous investigator, a spreadsheet program was written and used to size metal mesh donuts that have the radial stiffness value required to replace the squirrel cage in the power turbine. The squirrel cage and squeeze-film bearing damper developed for the power turbine rotor was then replaced by a metal mesh donut sized by the computer code. Coast-down tests were conducted through the first critical speed of the power turbine. The results of the metal mesh tests were compared with those obtained from previous testing with the squeeze film damper. The results show that the metal mesh damper has the same damping as the squeeze film at room temperature but does not lose its damping at elevated temperatures up to 210F?. Experiments were run under several different conditions including balanced rotor hot oil soaked, unbalanced rotor hot oil soaked, balanced dry, and unbalanced dry. Over all, metal mesh dampers appear to be a viable and attractive substitute for squeeze film dampers in gas turbine engines. The advantages shown to date include less variation of damping with temperature, ability to handle large rotor unbalance, and the ability (if required) to operate effectively in an oil free environment.

Zarzour, Mark Joseph

1999-01-01T23:59:59.000Z

246

Influence of Viscous and Capillary Forces on Immiscible Fluid Displacement: Pore-Scale Experimental Study in a Water-Wet Micromodel Demonstrating Viscous and Capillary Fingering  

Science Conference Proceedings (OSTI)

Unstable immiscible fluid displacement in porous media affects geological carbon sequestration, enhanced oil recovery, and groundwater contamination by nonaqueous phase liquids. Characterization of immiscible displacement processes at the pore-scale is important to better understand macroscopic processes at the continuum-scale. A series of displacement experiments was conducted to investigate the impacts of viscous and capillary forces on displacement stability and fluid saturation distributions in a homogeneous water-wet pore network micromodel with precisely-microfabricated pore structures. Displacements were studied using seven wetting-nonwetting fluid pairs with viscosity ratios M (viscosity of the advancing nonwetting fluid divided by the viscosity of the displaced wetting fluid) ranging four orders of magnitude from logM = -1.95 to 1.88. The micromodel was initially saturated with either polyethylene glycol 200 (PEG200) or water as a wetting fluid, which was then displaced by a nonwetting alkane fluid under different flow rates. Capillary numbers (Ca) ranged over four orders of magnitude for the reported experiments, from logCa = -5.88 to -1.02. Fluorescent microscopy was used to visualize displacement and measure nonwetting fluid saturation distributions. These experiments extend the classical work by Lenormand et al. by using water-wet micromodels, high-precision fabrication, and enhanced image analysis of the saturation distributions. In the micromodel experiments initially saturated with PEG200, a viscous wetting fluid, unstable displacement occurred by viscous fingering over the whole range of imposed capillary numbers. For the experiments initially saturated with water, unstable displacement occurred by capillary fingering at low capillary numbers. When the viscous forces were increased by increasing the injection rate, crossover into stable displacement was observed for the fluid pairs with M > 0. For unstable displacement experiments applying the same capillary number for the various fluid pairs, nonwetting fluid saturations were higher when capillary fingering was the dominant fingering process compared to viscous fingering. Our saturation distributions are consistent with other published experimental work and confirm the numerical results obtained by Lenormand et al.

Zhang, Changyong; Oostrom, Martinus; Wietsma, Thomas W.; Grate, Jay W.; Warner, Marvin G.

2011-08-18T23:59:59.000Z

247

DSP-Based Sensor-less Permanent Magnet Synchronous Motor Driver With Quasi-Sine PWM for Air-Conditioner Rotary Compressor.  

E-Print Network (OSTI)

??This thesis presented a sensor-less permanent magnet synchronous motor (PMSM) driver for controlling air-conditioner rotary compressor speed. In this thesis, a quasi-sine pulse-width modulation (PWM)… (more)

Liu, Li-hsiang

2012-01-01T23:59:59.000Z

248

The Elastic–Viscous–Plastic Sea Ice Dynamics Model in General Orthogonal Curvilinear Coordinates on a Sphere—Incorporation of Metric Terms  

Science Conference Proceedings (OSTI)

A new discretization for the elastic–viscous–plastic (EVP) sea ice dynamics model incorporates metric terms to account for grid curvature effects in curvilinear coordinate systems. A fundamental property of the viscous–plastic ice rheology that ...

Elizabeth C. Hunke; John K. Dukowicz

2002-07-01T23:59:59.000Z

249

Interfacial Mixing in Viscous Pipe Flows Interim report to Imperial Oil  

E-Print Network (OSTI)

. Introduction The cost of energy to pump oil through a pipe line is greatly reduced if the ow is not turbulent in this area, in part, because oil companies have only recently considered pumping oil through pipesInterfacial Mixing in Viscous Pipe Flows Interim report to Imperial Oil D. Van Vliet and B. R

Sutherland, Bruce

250

Bulk viscous fluid hypersurface - homogeneous cosmological models with time varying G and ?  

Science Conference Proceedings (OSTI)

Hypersurface - homogeneous cosmological models containing a bulk viscous fluid with time varying G and ? have been presented. We have shown that the field equations are solvable for any arbitrary cosmic scale function. The viscosity coefficient ... Keywords: bulk viscosity, hypersurface - homogeneous, variable G and ?. LATEX

Shri Ram; M. K. Verma

2010-02-01T23:59:59.000Z

251

Baroclinic Eady Wave and Fronts. Part I: Viscous Semigeostrophy and the Impact of Boundary Condition  

Science Conference Proceedings (OSTI)

A two-dimensional viscous semigeostrophic model is developed to study the evolution of the baroclinic Eady wave and fronts with two types (free-slip and nonslip) of boundary conditions. With the free-slip boundary condition, the solution is very ...

Qin Xu; Wei Gu; Jidong Gao

1998-12-01T23:59:59.000Z

252

An efficient correction procedure via reconstruction for simulation of viscous flow on moving and deforming domains  

Science Conference Proceedings (OSTI)

In this paper, we report the development of a new parallel solver using the Correction Procedure via Reconstruction (CPR) for viscous flows on moving and deforming grids. By employing an accurate treatment of flux derivatives for moving and deforming ... Keywords: Correction procedure via reconstruction, Moving and deforming grids, Parallel Navier-Stokes solver, Quadrilateral element, Unstructured grid

Chunlei Liang, Koji Miyaji, Bin Zhang

2014-01-01T23:59:59.000Z

253

To appear in the ACM SIGGRAPH conference proceedings Discrete Viscous Threads  

E-Print Network (OSTI)

To appear in the ACM SIGGRAPH conference proceedings Discrete Viscous Threads Mikl´os Bergou used in baby diapers, bandages, envelopes, upholstery, air ("HEPA") filters, surgical gowns, high in the ACM SIGGRAPH conference proceedings Figure 2: Using a time-parallel reference frame enables our

Wardetzky, Max

254

VISUALIZATION OF SOLUTION GAS DRIVE IN VISCOUS OIL SUPRI TR -126  

E-Print Network (OSTI)

is important during nucleation. Li and Yortsos (1991) visualized gas formation by pressure decline of solution gas drive behavior in heavy oil. Five different natural and synthetic oils were used, one of whichVISUALIZATION OF SOLUTION GAS DRIVE IN VISCOUS OIL SUPRI TR - 126 By D.S. George and A.R. Kovscek

255

A unified moving grid gas-kinetic method in Eulerian space for viscous flow computation  

Science Conference Proceedings (OSTI)

Under a generalized coordinate transformation with arbitrary grid velocity, the gas-kinetic BGK equation is reformulated in a moving frame of reference. Then, a unified conservative gas-kinetic scheme is developed for the viscous flow computation in ... Keywords: 65M06, 76P05, 76T05, Gas-kinetic scheme, Moving grid, Navier-Stokes equations, Unified coordinate system

Changqiu Jin; Kun Xu

2007-03-01T23:59:59.000Z

256

Coal desulfurization in a rotary kiln combustor. Quarterly report No. 1, April 16, 1990--July 15, 1990  

Science Conference Proceedings (OSTI)

BCR National Laboratory (BCRNL) has initiated a project aimed at evaluating the technical and economic feasibility of using a rotary kiln, suitably modified, to burn Pennsylvania anthracite wastes, co-fired with high-sulfur bituminous coal. Limestone will be injected into the kiln for sulfur control, to determine whether high sulfur capture levels can be achieved with high sorbent utilization. The principal objectives of this work are: (1) to prove the feasibility of burning anthracite refuse, with co-firing of high-sulfur bituminous coal and with limestone injection for sulfur emissions control, in a rotary kiln fitted with a Universal Energy International (UEI) air injector system; (2) to determine the emissions levels of SO{sub x} and NO{sub x} and specifically to identify the Ca/S ratios that are required to meet New Source Performance Standards; (3) to evaluate the technical and economic merits of a commercial rotary kiln combustor in comparison to fluidized bed combustors; and, (4) to ascertain the need for further work, including additional combustion tests, prior to commercial application, and to recommend accordingly a detailed program towards this end.

Cobb, J.T. Jr.

1990-08-15T23:59:59.000Z

257

Apparatus and methods for cooling and sealing rotary helical screw compressors  

DOE Patents (OSTI)

In a compression system which incorporates a rotary helical screw compressor, and for any type of gas or refrigerant, the working liquid oil is atomized through nozzles suspended in, and parallel to, the suction gas flow, or alternatively the nozzles are mounted on the suction piping. In either case, the aim is to create positively a homogeneous mixture of oil droplets to maximize the effectiveness of the working liquid oil in improving the isothermal and volumetric efficiencies. The oil stream to be atomized may first be degassed at compressor discharge pressure by heating within a pressure vessel and recovering the energy added by using the outgoing oil stream to heat the incoming oil stream. The stripped gas is typically returned to the compressor discharge flow. In the preferred case, the compressor rotors both contain a hollow cavity through which working liquid oil is injected into channels along the edges of the rotors, thereby forming a continuous and positive seal between the rotor edges and the compressor casing. In the alternative method, working liquid oil is injected either in the same direction as the rotor rotation or counter to rotor rotation through channels in the compressor casing which are tangential to the rotor edges and parallel to the rotor center lines or alternatively the channel paths coincide with the helical path of the rotor edges. 14 figs.

Fresco, A.N.

1997-08-05T23:59:59.000Z

258

Apparatus and methods for cooling and sealing rotary helical screw compressors  

DOE Patents (OSTI)

In a compression system which incorporates a rotary helical screw compressor, and for any type of gas or refrigerant, the working liquid oil is atomized through nozzles suspended in, and parallel to, the suction gas flow, or alternatively the nozzles are mounted on the suction piping. In either case, the aim is to create positively a homogeneous mixture of oil droplets to maximize the effectiveness of the working liquid oil in improving the isothermal and volumetric efficiencies. The oil stream to be atomized may first be degassed at compressor discharge pressure by heating within a pressure vessel and recovering the energy added by using the outgoing oil stream to heat the incoming oil stream. The stripped gas is typically returned to the compressor discharge flow. In the preferred case, the compressor rotors both contain a hollow cavity through which working liquid oil is injected into channels along the edges of the rotors, thereby forming a continuous and positive seal between the rotor edges and the compressor casing. In the alternative method, working liquid oil is injected either in the same direction as the rotor rotation or counter to rotor rotation through channels in the compressor casing which are tangential to the rotor edges and parallel to the rotor centerlines or alternatively the channel paths coincide with the helical path of the rotor edges.

Fresco, Anthony N. (P.O. Box 734, Upton, NY 11973)

1997-01-01T23:59:59.000Z

259

Method and system including a double rotary kiln pyrolysis or gasification of waste material  

DOE Patents (OSTI)

A method is described for destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns define a cylindrical annular space with the inlet being positioned in registry with the axis of rotation of the ganged kilns. During operation, the temperature of the wall of the inner rotary kiln at the inlet is not less than about 500 C to heat the particulate material to a temperature in the range of from about 200 C to about 900 C in a pyrolyzing atmosphere to reduce the particulate material as it moves from the one end toward the other end. The reduced particulates including char are transferred to the annular space between the inner and the outer rotating kilns near the other end of the inner rotating kiln and moved longitudinally in the annular space from near the other end toward the one end in the presence of oxygen to combust the char at an elevated temperature to produce a waste material including ash. Also, heat is provided which is transferred to the inner kiln. The waste material including ash leaves the outer rotating kiln near the one end and the pyrolysis vapor leaves through the particulate material inlet. 5 figs.

McIntosh, M.J.; Arzoumanidis, G.G.

1997-09-02T23:59:59.000Z

260

A method and system including a double rotary kiln pyrolysis or gasification of waste material  

DOE Patents (OSTI)

A method is described for destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns define a cylindrical annular space with the inlet being positioned in registry with the axis of rotation of the ganged kilns. During operation, the temperature of the wall of the inner rotary kiln at the inlet is not less than about 500 C to heat the particulate material to a temperature in the range of from about 200 C to about 900 C in a pyrolyzing atmosphere to reduce the particulate material as it moves from the one end toward the other end. The reduced particulates including char are transferred to the annular space between the inner and the outer rotating kilns near the other end of the inner rotating kiln and moved longitudinally in the annular space from near the other end toward the one end in the presence of oxygen to combust the char at an elevated temperature to produce a waste material including ash. Also, heat is provided which is transferred to the inner kiln. The waste material including ash leaves the outer rotating kiln near the one end and the pyrolysis vapor leaves through the particulate material inlet.

McIntosh, M.J.; Arzoumanidis, G.G.

1995-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Method and system including a double rotary kiln pyrolysis or gasification of waste material  

DOE Patents (OSTI)

A method of destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns define a cylindrical annular space with the inlet being positioned in registry with the axis of rotation of the ganged kilns. During operation, the temperature of the wall of the inner rotary kiln at the inlet is not less than about 500.degree. C. to heat the particulate material to a temperature in the range of from about 200.degree. C. to about 900.degree. C. in a pyrolyzing atmosphere to reduce the particulate material as it moves from the one end toward the other end. The reduced particulates including char are transferred to the annular space between the inner and the outer rotating kilns near the other end of the inner rotating kiln and moved longitudinally in the annular space from near the other end toward the one end in the presence of oxygen to combust the char at an elevated temperature to produce a waste material including ash. Also, heat is provided which is transferred to the inner kiln. The waste material including ash leaves the outer rotating kiln near the one end and the pyrolysis vapor leaves through the particulate material inlet.

McIntosh, Michael J. (Bolingbrook, IL); Arzoumanidis, Gregory G. (Naperville, IL)

1997-01-01T23:59:59.000Z

262

EVALUATION OF ALTERNATIVE FILTER MEDIA FOR THE ROTARY MICROFILTER, PHASE 2  

SciTech Connect

Testing was conducted at the Savannah River National Laboratory (SRNL) to investigate filter membrane performance in an effort to increase rotary microfilter (RMF) throughput. Membranes were tested in the SpinTek Filtration, Inc. Static Test Cell (STC), which permitted quick and easy testing of several different membranes. Testing consisted of 100 hours tests with two different slurry feeds, based on recommendations from the phase 1 testing. One feed contained Monosodium Titanate (MST) solids in a simulated salt solution. The other feed contained simulated sludge batch 6 (SB6) solids in a simulated salt solution. Five membranes were tested, one each from filter manufactures Pall and Porvair and three from the Oak Ridge National Laboratory (ORNL). The membrane from Pall is the current membrane used on the latest generation RMF. The Porvair membrane performed well in previous STC tests as well as one of the ORNL membranes. The other two membranes from ORNL were recently developed and not available for the previous STC test. The results indicate that the Porvair filter performed best with the MST slurry and the ORNL SVB6-1B filter performed best with the SB6 slurry. Difficulty was encountered with the ORNL filters due to their dimensional thickness, which was greater than the recommended filter thickness for the STC. The STC equipment was modified to complete the testing of the ORNL filters.

Fowley, M.

2012-07-31T23:59:59.000Z

263

Independent one-way acting hydraulic jar sections for a rotary drill string  

SciTech Connect

First and second separate one-way acting hydraulic jar sections each include inner and outer telescopically arranged tubular members with means for connecting one end of each the inner and outer tubular members of each jar section in the drill string. Spaced seal means between the inner and outer tubular members form a chamber in each jar section for confining hydraulic operating fluid. Hydraulic jar means are formed by cooperating means on the inner and outer tubular members within each operating fluid chamber. The cooperating means is spaced axially and disengaged in each fluid chamber when the drill string is in tension and compression during rotary drilling operation to inhibit damage and wear thereto. The hydraulic jar means in the first jar section is constructed to deliver an up jar and the jar means in the separate second jar section is constructed to deliver a down jar to the drill string. Drive means in a sealed chamber in each jar section connect the inner and outer tubular members of each jar section to allow relative longitudinal movement while preventing relative rotation therebetween. Means to equalize pressure adjacent one end of each of the chambers with the pressure in the well bore is provided in each jar section, which accommodates relative longitudinal movement of the inner and outer tubular members of each jar section for selectively creating an up or down jarring force independently of the well bore pressure.

Anderson, E.A.; Webb, D.D.

1980-10-07T23:59:59.000Z

264

Influence of Controlled Viscous Dissipation on the Propagation of Strongly Nonlinear Waves in Stainless Steel Based Phononic Crystals  

E-Print Network (OSTI)

Strongly nonlinear phononic crystals were assembled from stainless steel spheres. Single solitary waves and splitting of an initial pulse into a train of solitary waves were investigated in different viscous media using motor oil and non-aqueous glycerol to introduce a controlled viscous dissipation. Experimental results indicate that the presence of a viscous fluid dramatically altered the splitting of the initial pulse into a train of solitary waves. Numerical simulations qualitatively describe the observed phenomena only when a dissipative term based on the relative velocity between particles is introduced.

E. B. Herbold; V. F. Nesterenko; C. Daraio

2005-12-16T23:59:59.000Z

265

www.myresources.com.au OIL & GAS BULLETIN VOL. 15, NO. 11 PAGE 9 Safety first: Oil rigs off the north west shelf will be studied for  

E-Print Network (OSTI)

www.myresources.com.au OIL & GAS BULLETIN VOL. 15, NO. 11 PAGE 9 NEWS Safety first: Oil rigs off for future successful tight gas exploration projects in Western Australia has been set up and studies the tight gas sand field at its exploration permit in the South Perth Basin. Professor Rezaee said

266

Capillary-driven flow induced by a stepped perturbation atop a viscous film  

E-Print Network (OSTI)

Thin viscous liquid films driven by capillarity are well described in the lubrication theory through the thin film equation. In this article, we present an analytical solution of this equation for a particular initial profile: a stepped perturbation. This initial condition allows a linearization of the problem making it amenable to Fourier analysis. The solution is obtained and characterized. As for a temperature step in the heat equation, self-similarity of the first kind of the full evolution is demonstrated and a long-term expression for the excess free energy is derived. In addition, hydrodynamical fields are described. The solution is then compared to experimental profiles from a model system: a polystyrene nanostep above the glass transition temperature which flows due to capillarity. The excellent agreement enables a precise measurement of the capillary velocity for this polymeric liquid, without involving any numerical simulation. More generally, as these results hold for any viscous system driven by ...

Salez, Thomas; Bäumchen, Oliver; Dalnoki-Veress, Kari; Raphaël, Élie

2012-01-01T23:59:59.000Z

267

A blow-up criterion for compressible viscous heat-conductive flows  

E-Print Network (OSTI)

We study an initial boundary value problem for the Navier-Stokes equations of compressible viscous heat-conductive fluids in a 2-D periodic domain or the unit square domain. We establish a blow-up criterion for the local strong solutions in terms of the gradient of the velocity only, which coincides with the famous Beale-Kato-Majda criterion for ideal incompressible flows.

Jiang, Song

2010-01-01T23:59:59.000Z

268

A TIME ACCURATE PREDICTION OF THE VISCOUS FLOW IN A TURBINE STAGE INCLUDING A ROTOR IN MOTION.  

E-Print Network (OSTI)

??AbstractA TIME ACCURATE PREDICTION OF THE VISCOUS FLOW IN A TURBINE STAGE INCLUDING A ROTOR IN MOTIONBy Akamol ShavalikulThe actual flow field in a turbine… (more)

Shavalikul, Akamol

2009-01-01T23:59:59.000Z

269

Capillary-driven flow induced by a stepped perturbation atop a viscous film  

E-Print Network (OSTI)

Thin viscous liquid films driven by capillarity are well described in the lubrication theory through the thin film equation. In this article, we present an analytical solution of this equation for a particular initial profile: a stepped perturbation. This initial condition allows a linearization of the problem making it amenable to Fourier analysis. The solution is obtained and characterized. As for a temperature step in the heat equation, self-similarity of the first kind of the full evolution is demonstrated and a long-term expression for the excess free energy is derived. In addition, hydrodynamical fields are described. The solution is then compared to experimental profiles from a model system: a polystyrene nanostep above the glass transition temperature which flows due to capillarity. The excellent agreement enables a precise measurement of the capillary velocity for this polymeric liquid, without involving any numerical simulation. More generally, as these results hold for any viscous system driven by capillarity, the present solution may provide a useful tool in hydrodynamics of thin viscous films.

Thomas Salez; Joshua D. McGraw; Oliver Bäumchen; Kari Dalnoki-Veress; Élie Raphaël

2012-10-22T23:59:59.000Z

270

Performance investigation on a novel two-stage solar driven rotary desiccant cooling system using composite desiccant materials  

Science Conference Proceedings (OSTI)

In this study, a two-stage solar driven rotary desiccant cooling (TSRDC) system with novel configuration and newly developed silica gel-haloid composite desiccant is proposed aiming to reduce regeneration temperature and to achieve high energy performance. Simulated results show that there also exists an optimal rotation speed for TSRDC system. Compared with one-stage system, it is found that for the similar supply air state, the required regeneration temperature of TSRDC system is lower and for the same regeneration temperature, the cooling capacity of TSRDC is bigger. (author)

Ge, T.S.; Li, Y.; Dai, Y.J.; Wang, R.Z. [Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240 (China)

2010-02-15T23:59:59.000Z

271

Analysis of the Energy-Saving Potential of a Three-Rotary Wheel Fresh Air-Handling Unit  

E-Print Network (OSTI)

To evaluate the energy-saving potential of a proposed three-rotary wheel fresh air-handling unit (TRWFAHU), it is numerically simulated with weather data of Changsha by using a mathematical model. Compared with a conventional fresh air-handling unit, TRWFAHU can save 10.2% of primary energy and greatly decrease the energy consumption of chiller. If waste heat is available for regenerating the desiccant, the system can achieve greater energy savings. It is feasible to improve indoor air quality (IAQ) by increasing ventilation while without increasing energy consumption.

Hao, X.; Zhang, G.; Zou, S.; Liu, H.

2006-01-01T23:59:59.000Z

272

EVALUATION OF SUPPLEMENTAL PRE-TREATMENT DEVELOPMENT REQUIREMENTS TO MEET TRL 6 ROTARY MICROFILTRATION  

SciTech Connect

In spring 2011, the Technology Maturation Plan (TMP) for the Supplemental Treatment Project (RPP-PLAN-49827, Rev. 0), Technology Maturation Plan for the Treatment Project (T4S01) was developed. This plan contains all identified actions required to reach technical maturity for a field-deployable waste feed pretreatment system. The supplemental pretreatment system has a filtration and a Cs-removal component. Subsequent to issuance of the TMP, rotary microfiltration (RMF) has been identified as the prime filtration technology for this application. The prime Cs-removal technology is small column ion exchange (ScIX) using spherical resorcinol formaldehyde (sRF) as the exchange resin. During fiscal year 2011 (FY2011) some of the tasks identified in the TMP have been completed. As of September 2011, the conceptual design package has been submitted to DOE as part of the critical decision (CD-1) process. This document describes the remaining tasks identified in the TMP to reach technical maturity and evaluates the validity of the proposed tests to fill the gaps as previously identified in the TMP. The potential vulnerabilities are presented and the completed list of criteria for the DOE guide DOE G 413.3-4 different technology readiness levels are added in an attachment. This evaluation has been conducted from a technology development perspective - all programmatic and manufacturing aspects were excluded from this exercise. Compliance with the DOE G 413.3-4 programmatic and manufacturing requirements will be addressed directly by the Treatment Project during the course of engineering design. The results of this evaluation show that completion of the proposed development tasks in the TMP are sufficient to reach TRL 6 from a technological point of view. The tasks involve actual waste tests using the current baseline configuration (2nd generation disks, 40 psi differential pressure, 30 C feed temperature) and three different simulants - the PEP, an AP-Farm and an S-saltcake. Based on FY2011 dollars used in the TMP, these tests will have ROM costs of $950K and require up to 10 months to complete. Completion of the simulant testing will satisfy the TRL 5 and TRL 6 criteria that are related to system testing with materials that represent the full range of properties in a relevant environment.

HUBER HJ

2011-10-03T23:59:59.000Z

273

Wettability and Oil Recovery by Imbibition and Viscous Displacement from Fractured and Heterogeneous Carbonates  

Science Conference Proceedings (OSTI)

About one-half of U.S. oil reserves are held in carbonate formations. The remaining oil in carbonate reservoirs is regarded as the major domestic target for improved oil recovery. Carbonate reservoirs are often fractured and have great complexity even at the core scale. Formation evaluation and prediction is often subject to great uncertainty. This study addresses quantification of crude oil/brine/rock interactions and the impact of reservoir heterogeneity on oil recovery by spontaneous imbibition and viscous displacement from pore to field scale. Wettability-alteration characteristics of crude oils were measured at calcite and dolomite surfaces and related to the properties of the crude oils through asphaltene content, acid and base numbers, and refractive index. Oil recovery was investigated for a selection of limestones and dolomites that cover over three orders of magnitude in permeability and a factor of four variation in porosity. Wettability control was achieved by adsorption from crude oils obtained from producing carbonate reservoirs. The induced wettability states were compared with those measured for reservoir cores. The prepared cores were used to investigate oil recovery by spontaneous imbibition and viscous displacement. The results of imbibition tests were used in wettability characterization and to develop mass transfer functions for application in reservoir simulation of fractured carbonates. Studies of viscous displacement in carbonates focused on the unexpected but repeatedly observed sensitivity of oil recovery to injection rate. The main variables were pore structure, mobility ratio, and wettability. The potential for improved oil recovery from rate-sensitive carbonate reservoirs by increased injection pressure, increased injectivity, decreased well spacing or reduction of interfacial tension was evaluated.

Norman R. Morrow; Jill Buckley

2006-04-01T23:59:59.000Z

274

Integrated Status and Effectiveness Monitoring Program - Entiat River Rotary Screw Traps,Snorkel Surveys, and Steelhead Redd Surveys, 2008.  

DOE Green Energy (OSTI)

The USFWS Mid-Columbia River Fishery Resource Office (MCRFRO) operated two rotary screw traps on the Entiat River as part of the Integrated Status and Effectiveness Monitoring Program from March through November of 2008. Along with the smolt traps, juvenile emigrants were also captured at remote locations throughout the Entiat watershed and its major tributary, the Mad River. A total of 16,782 wild salmonids were PIT tagged during the study period. Of this, 3,961(23.6%) were wild Oncorhynchus mykiss, 6,987 (41.6%) were wild spring run O. tshawytscha, and 5,591 (33.3%) were identified as wild O. tshawytscha of unknown run. Rotary screw trap efficiencies averaged 40.3% at the upper (Rkm 11.0) trap and 7.8% for the lower (Rkm 2.0) trap. These efficiencies were pooled for emigrant O. tshawytscha and O. mykiss. The MCRFRO conducted effectiveness monitoring snorkel surveys at 24 sites during the winter period and 30 sites during the summer and fall periods of 2008 as part of the Integrated Status and Effectiveness Monitoring Program in the Entiat River. The 2008 steelhead spawning grounds surveys were conducted weekly in the main Entiat River from rkm 1.1 to 44.2. A total of 222 steelhead redds were identified over the period from February 28 to June 16 2008 with April being the peak spawning month. Approximately 80% of the steelhead redds were located downstream of the rkm 26.

Nelle, R.D.; Desgroseiller, Tom; Cotter, Michael (U.S. Fish and Wildlife Service)

2009-02-17T23:59:59.000Z

275

Integrated Status and Effectiveness Monitoring Program - Entiat River Rotary Screw Traps, Snorkel Surveys, and Steelhead Redd Surveys, 2008-2009.  

DOE Green Energy (OSTI)

The USFWS Mid-Columbia River Fishery Resource Office (MCRFRO) operated two rotary screw traps on the Entiat River as part of the Integrated Status and Effectiveness Monitoring Program from March through November of 2008. Along with the smolt traps, juvenile emigrants were also captured at remote locations throughout the Entiat watershed and its major tributary, the Mad River. A total of 16,782 wild salmonids were PIT tagged during the study period. Of this, 3,961(23.6%) were wild Oncorhynchus mykiss, 6,987 (41.6%) were wild spring run O. tshawytscha, and 5,591 (33.3%) were identified as wild O. tshawytscha of unknown run. Rotary screw trap efficiencies averaged 40.3% at the upper (Rkm 11.0) trap and 7.8% for the lower (Rkm 2.0) trap. These efficiencies were pooled for emigrant O. tshawytscha and O. mykiss. The MCRFRO conducted effectiveness monitoring snorkel surveys at 24 sites during the winter period and 30 sites during the summer and fall periods of 2008 as part of the Integrated Status and Effectiveness Monitoring Program in the Entiat River. The 2008 steelhead spawning grounds surveys were conducted weekly in the main Entiat River from rkm 1.1 to 44.2. A total of 222 steelhead redds were identified over the period from February 28 to June 16 2008 with April being the peak spawning month. Approximately 80% of the steelhead redds were located downstream of the rkm 26.

Nelle, R.D.; Desgroseillier, Tom; Cotter, Michael [U.S. Fish and Wildlife Service

2009-04-14T23:59:59.000Z

276

Asymptotic Behavior of a Viscous Liquid-Gas Model with Mass-Dependent Viscosity and Vacuum  

E-Print Network (OSTI)

In this paper, we consider two classes of free boundary value problems of a viscous two-phase liquid-gas model relevant to the flow in wells and pipelines with mass-dependent viscosity coefficient. The liquid is treated as an incompressible fluid whereas the gas is assumed to be polytropic. We obtain the asymptotic behavior and decay rates of the mass functions $n(x,t)$,\\$m(x,t)$ when the initial masses are assumed to be connected to vacuum both discontinuously and continuously, which improves the corresponding result about Navier-Stokes equations in \\cite{Zhu}.

liu, Qingqing

2011-01-01T23:59:59.000Z

277

Simulation of a viscous fluid spreading by a bidimensional shallow water model  

E-Print Network (OSTI)

In this paper we propose a numerical method to solve the Cauchy problem based on the viscous shallow water equations in an horizontally moving domain. More precisely, we are interested in a flooding and drying model, used to modelize the overflow of a river or the intrusion of a tsunami on ground. We use a non conservative form of the two-dimensional shallow water equations, in eight velocity formulation and we build a numerical approximation, based on the Arbitrary Lagrangian Eulerian formulation, in order to compute the solution in the moving domain.

Di Martino, Bernard; Paoli, Jean-Martin; Simonnet, Pierre; 10.1016/j.apm.2011.01.015

2011-01-01T23:59:59.000Z

278

Visualization of Solution Gas Drive in Viscous Oil, SUPRI TR-126  

SciTech Connect

Several experimental studies of solution gas drive are available in this report. Almost all of the studies have used light oil. Solution gas drive behavior, especially in heavy oil reservoirs, is poorly understood. Experiments were performed in which pore-scale solution gas drive phenomena were viewed in water/carbon dioxide and viscous oil/carbon dioxide systems. A new pressure vessel was designed and constructed to house silicon-wafer micromodels that previously operated at low (<3 atm) pressure. The new apparatus is used for the visual studies. Several interesting phenomena were viewed. The repeated nucleation of gas bubbles was observed at a gas-wet site occupied by dirt. Interestingly, the dissolution of a gas bubble into the liquid phase was previously recorded at the same nucleation site. Gas bubbles in both systems grew to span one ore more pore bodies before mobilization. Liquid viscosity affected the ease with which gas bubbles coalesced. More viscous solutions result in slower rates of coalescence. The transport of solid particles on gas-liquid interfaces was also observed.

George, D.S.; Kovscek, A.R.

2001-07-23T23:59:59.000Z

279

EVALUATION OF AP-FARM SIMULANT COMPOSITION FOR ROTARY MICROFILTER TESTING  

SciTech Connect

This document identifies the feed composition of a Hanford AP tank farm simulant for rotary microfiltration testing. The composition is based on an Hanford Tank Waste Operations Simulator (HTWOS) model run in combination with Tank Waste Information Network (TWINS) data and mineralogical studies of actual waste solids. The feed simulant is intended to be used in test runs at SRNL. The simulant will be prepared in two parts: (1) A supernate, composed of water-soluble salts and (2) The undissolved (actually, undissolvable) solids. Test slurries with distinct solids concentrations (e.g., 0.5, 5 and 10 wt%) are then prepared as needed. The base for the composition of supernate and solids is the modeled feed sequence for a deployment scenario of the Supplemental Pretreatment units within AP-farm. These units comprise a filtration part, the RMF, and a Cesium-removal part, a Small Column Ion Exchange. The primary use of this simulant is for filtration testing - however, in case that it is also used for ion-exchange tests, the amount of Cs-137 that would need to be added is available in Table 1 and Attachment 3. A modified model run (MMR-049) of the Hanford Tank Waste Operations Simulator (HTWOS) system plan 6 case 3 was performed to identify the feed sequence. Case 3 assumed supplemental treatment besides the low activity waste (LAW) melter with supplemental pretreatment supporting the pretreatment facility. The MMR did not cap the duration of supplemental pretreatment to 15 months, but rather used it throughout the entire treatment mission as an add-on option to the pretreatment facility at the Waste Treatment and Immobilization Plant (WTP). Tank 241-AP-105 (AP-105) was chosen as the feed tank to the filtration unit. Other parameters included a fixed minimum of 0.5 wt% solids in the feed and a maximum Na-concentration of 5M in the supernate. The solids rejection from the filtration unit was set to 99.99% and the maximum allowed amount of solids within tank AP-105 was set to 10 wt%. A comprehensive description of the run and the full suite of results were issued as SVF-2364-00. The list of individual feed events including the amounts of liquid and solids transferred for the first five years is added as Attachment 2; the chemical composition of the supernate feed comprises Attachment 3. For the simulant composition, only the first five years of proposed feed delivery were taken into account. The main outcome of MMR-049 was that for the first five years, the feed would come mostly from AP-farms. Multiple delivery campaigns to AP-105 are included in this average feed, while minimizing the amount of contributing tanks to the solids in the feed mix.

HUBER HJ

2011-09-19T23:59:59.000Z

280

Dynamical scaling and fragmentation in viscous coarsening: An interrupted in-situ X-ray tomographic study  

E-Print Network (OSTI)

By means of computed X-Ray microtomography we followed the coarsening of a phase-separated ternary silicate glass in the liquid state. The volumes, surfaces, mean and gaussian curvatures of the domains of minority phase were measured after reconstruction of the 3D images and segmentation. We observed a growth law of the characteristic length scale $\\ell \\sim t$, consistent with the viscous coarsening of bicontinuous structure. All geometrical observables under study, either local or global, confirm the dynamical scaling hypothesis. A gradual fragmentation of the structure was observed in the less viscous phase and led to a power-law size distribution of isolated domains.

David Bouttes; Emmanuelle Gouillart; Elodie Boller; Davy Dalmas; Damien Vandembroucq

2013-09-06T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Evaluation of rotary drum screens used to protect juvenile salmonids in the Yakima River Basin, Washington, USA  

DOE Green Energy (OSTI)

The purpose of this study is to assess the design and operation of rotary drum screens. Chinook salmon Oncorhynchus tshawytscha and steelhead O. mykiss are the potentially affected fish. Cold-branded fish are released upstream of the screen facilities. For descaling tests, the fish are captured as they exit the facility and are examined for injuries, descaling, and post-test mortalities. For screen passage tests, nets are placed in the irrigation ditch, downstream of the screen facilities, to determine if fish can pass through or over the screens. More than 100 tests have been conducted with almost 35,000 fish. Additionally, nearly 2000 native fish have been evaluated. Usually less than 2% of the test fish are injured or dead, and the condition of test fish does not differ from the controls. Less than 2% of the fish pass through or over the screens when the screen seals are properly installed and maintained.

Neitzel, D.A.; Abernethy, C.S. (Pacific Northwest Lab., Richland, WA (USA)); Clune, T.J. (USDOE Bonneville Power Administration, Yakima, WA (USA))

1990-10-01T23:59:59.000Z

282

U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves 2006 ...  

U.S. Energy Information Administration (EIA)

... and the Average Number of Active Rotary Drilling Rigs, 1977-2006: PDF: 4: ... Glossary: A listing of terms used within the Reserves Report, and their ...

283

U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves 2005 ...  

U.S. Energy Information Administration (EIA)

... and the Average Number of Active Rotary Drilling Rigs, 1977-2005: PDF: 4: ... Glossary: A listing of terms used within the Reserves Report, and their ...

284

Crude Oil and Natural Gas Drilling Activity  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: Rotary rigs in operation ...

285

Crude Oil and Natural Gas Drilling Activity  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: Rotary rigs in ...

286

Cryogenic Viscous Compressor Development and Modeling for the ITER Vacuum System  

SciTech Connect

The ITER vacuum system requires a roughing pump system that can pump the exhaust gas from the torus cryopumps to the tritium exhaust processing plant. The gas will have a high tritium content and therefore conventional vacuum pumps are not suitable. A pump called a cryogenic viscous compressor (CVC) is being designed for the roughing system to pump from ~500 Pa to 10 Pa at flow rates of 200 Pa-m3/ s. A unique feature of this pump is that is allows any helium in the gas to flow through the pump where it is sent to the detritiation system before exhausting to atmosphere. A small scale prototype of the CVC is being tested for heat transfer characteristics and compared to modeling results to ensure reliable operation of the full scale CVC. Keywords- ITER; vacuum; fuel cycle

Baylor, Larry R [ORNL; Meitner, Steven J [ORNL; Barbier, Charlotte N [ORNL; Combs, Stephen Kirk [ORNL; Duckworth, Robert C [ORNL; Edgemon, Timothy D [ORNL; Rasmussen, David A [ORNL; Hechler, Michael P [ORNL; Kersevan, R. [ITER Organization, Cadarache, France; Dremel, M. [General Atomics, San Diego; Pearce, R.J.H. [General Atomics, San Diego; Boissin, Jean Claude [Consultant

2011-01-01T23:59:59.000Z

287

Power-law scaling of asymmetries in viscous flow with PT-symmetric inflow and outflow  

E-Print Network (OSTI)

In recent years, open systems with balanced loss and gain, that are invariant under the combined parity and time-reversal (PT) operations, have been studied via asymmetries of their solutions. They represent systems as diverse as coupled optical waveguides, silicon photonic circuits, and electrical or mechanical oscillators. We numerically investigate the asymmetries of incompressible viscous flow in two and three dimensions with "balanced" inflow-outflow (PT-symmetric) configurations. By introducing configuration-dependent classes of asymmetry functions in velocity, kinetic energy density, and vorticity fields, we find that the flow asymmetries exhibit power-law scaling in the laminar regime with the Reynolds number ranging over four decades. At small Reynolds numbers, the flow asymmetries in the balanced configurations are orders of magnitude smaller than those that occur in traditional configurations. Our results imply that PT-symmetric inflow-outflow configurations provide a hitherto unexplored avenue to tune flow properties.

Huidan; Yu; Xi Chen; Yousheng Xu; Yogesh N. Joglekar

2013-04-19T23:59:59.000Z

288

Design of a high-pressure circulating pump for viscous liquids  

Science Conference Proceedings (OSTI)

The design of a reciprocating dual action piston pump capable of circulating viscous fluids at pressures of up to 34 MPa (5000 psi) and temperatures up to 80 ? ° C is described. The piston of this pump is driven by a pair of solenoids energized alternatively by a 12 V direct current power supply controlled by an electronic controller facilitating continuously adjustable flow rates. The body of this seal-less pump is constructed using off-the-shelf parts eliminating the need for custom made parts. Both the electronic controller and the pump can be assembled relatively easily. Pump performance has been evaluated at room temperature ( 22 ? ° C ) and atmospheric pressure using liquids with low and moderately high viscosities

Bernhard Seifried; Feral Temelli

2009-01-01T23:59:59.000Z

289

The effects of viscous forces on three-phase relative permeability  

Science Conference Proceedings (OSTI)

The overall objective of Three-Phase Relative Permeability Project (BE9) is to develop guidelines for improving the accuracy of three-phase relative permeability determinations. This report summarizes previous studies and explains the progress made at NIPER on studying the effect of variations in viscous forces on three-phase relative permeabilities by changing the viscosity of both wetting and nonwetting phases. Significant changes were observed due to viscosity variations. An increase in oil viscosity reduced the relative permeability to gas; an increase in brine/(wetting-phase) viscosity reduced the relative permeability to brine. A slight increase in gas relative permeability was also observed. These observations suggest that the viscosities of both oil and water influence three-phase permeability data. During this study, data scatter was sometimes encountered which was comparable to that of published results. The causes of this scatter are outlined in this report and remedial attempts are discussed. 20 refs., 16 figs., 5 tabs.

Maloney, D.R.; Mahmood, S.M.; Honarpour, M.M.

1989-04-01T23:59:59.000Z

290

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8 8 HOISTS 8-i This chapter provides safety standards for inspecting, testing, and operating hoists not permanently mounted on overhead cranes and implements the requirements of ASME B30.11 ("Monorail Systems and Underhung Cranes"), B30.16["Overhead Hoists (Underhung)"], and B30.21 ("Manually Lever Operated Hoists") (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). 8.1 GENERAL .................................................................................................................................8-1 8.1.1 Operator Training/Qualification ..................................................................................8-4 8.1.2 Marking........................................................................................................................8-4

291

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7 7 OVERHEAD AND GANTRY CRANES 7-i This chapter specifies operation, inspection, maintenance, and testing requirements for the use of overhead and gantry cranes and implements the requirements of ASME B30.2 ["Overhead and Gantry Cranes (Top- Running Bridge, Single or Multiple Girder, Top-Running Trolley Hoist)"], B30.11 ("Monorail Systems and Underhung Cranes"), and B30.17 ["Overhead and Gantry Cranes (Top-Running Bridge, Single Girder, Underhung Hoist")] (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). 7.1 GENERAL .................................................................................................................................7-1 7.1.1 Operator Training/Qualification

292

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CHAPTER 9 MOBILE CRANES 9-i This chapter specifies operation, inspection, maintenance, and testing requirements for the use of mobile cranes and implements the requirements of ASME B30.5 ("Mobile and Locomotive Cranes") (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). 9.1 GENERAL .................................................................................................................................9-1 9.1.1 Operator Training/Qualification ..................................................................................9-1 9.1.2 Load Limits..................................................................................................................9-1 9.1.3 Load Rating Chart........................................................................................................9-1

293

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4 4 LIFTING PERSONNEL 4-i Chapter 4 Lifting Personnel This chapter specifies the design and inspection requirements for personnel lift platforms as well as the operational requirements for such platforms and appurtenant hoisting equipment. It implements the requirements of ASME B30.23, Personnel Lifting Systems (for latest ASME standards, see http://catalog.asme.org/home.cfm?Category=CS). 4.1 GENERAL ................................................................................................................................4-1 4.1.1 Personnel Lifting Evaluation .......................................................................................4-1 4.1.2 Designated Leader .......................................................................................................4-1

294

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Change Notice No. 1 DOE-STD-1090-2007 Change Notice No. 1 DOE-STD-1090-2007 December 2007 Chapter 4 Provide ASME attribution at introduction to the Table on Contents and on Figures 4-3,4 and Exhibits 1 & 2 Chapter 7 Provide ASME attribution at introduction to the Table on Contents and on Figures 7-1,2,3,4,5 and Table 7-1 Chapter 8 Provide ASME attribution at introduction to the Table on Contents and on Figures 8-1,2,3,4,5,6,7,8,9 and Table 8-1 Chapter 9 Provide ASME attribution at introduction to the Table on Contents and on Figures 9-1,2,3,4,5,6 and Table 9-2 Chapter 11 Provide ASME attribution at introduction to the Table on Contents and on Figures 11-10,15 and Tables 11-10,11,14,15,16 Chapter 12 Provide ASME attribution at introduction to the Table on Contents and on

295

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A frames (sometimes referred to as portable gantries), Truck mounted cranes with a capacity of 1 ton or less not covered in ASME B30.5 (.Mobile and Locomotive Cranes.) and self...

296

rig upgrades2.qxp  

NLE Websites -- All DOE Office Websites (Extended Search)

D E T I N U S O F A M E R I C A E A s the oil and gas industry continues to drill in more remote areas, at deeper depths, and in more challenging environments, the advancement of...

297

Hoisting and Rigging  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Four-pad pow ered vacuum lifting device Four-pad pow ered vacuum lifting device manipulator DOE-STD-1090-2007 14.3 VACUUM LIFTING DEVICES 14-11 Chapter 14 Below-the-Hook...

298

SERI Desiccant Cooling Test Facility. Status report. Preliminary data on the performance of a rotary parallel-passage silica-gel dehumidifier  

DOE Green Energy (OSTI)

This report describes the SERI Desiccant Cooling Test Facility. The facility can test bench-scale rotary dehumidifiers over a wide range of controlled conditions. We constructed and installed in the test loop a prototype parallel-passage rotary dehumidifier that has spirally wound polyester tape coated with silica gel. The initial tests gave satisfactory results indicating that approximately 90% of the silica gel was active and the overall Lewis number of the wheel was near unity. The facility has several minor difficulties including an inability to control humidity satisfactorily and nonuniform and highly turbulent inlet velocities. To completely validate the facility requires a range of dehumidifier designs. Several choices are available including constructing a second parallel-passage dehumidifier with the passage spacing more uniform.

Schultz, K.J.

1986-04-01T23:59:59.000Z

299

Apparatus and method for controlling the rotary airlocks in a coal processing system by reversing the motor current rotating the air lock  

SciTech Connect

An improvement to a coal processing system where hard materials found in the coal may cause jamming of either inflow or outflow rotary airlocks, each driven by a reversible motor. The instantaneous current used by the motor is continually monitored and compared to a predetermined value. If an overcurrent condition occurs, indicating a jamming of the airlock, a controller means starts a "soft" reverse rotation of the motor thereby clearing the jamming. Three patterns of the motor reversal are provided.

Groombridge, Clifton E. (Hardin, MT)

1996-01-01T23:59:59.000Z

300

Chemical and Microbial Characterization of North Slope Viscous Oils to Assess Viscosity Reduction and Enhanced Recovery  

SciTech Connect

A large proportion of Alaska North Slope (ANS) oil exists in the form of viscous deposits, which cannot be produced entirely using conventional methods. Microbially enhanced oil recovery (MEOR) is a promising approach for improving oil recovery for viscous deposits. MEOR can be achieved using either ex situ approaches such as flooding with microbial biosurfactants or injection of exogenous surfactant-producing microbes into the reservoir, or by in situ approaches such as biostimulation of indigenous surfactant-producing microbes in the oil. Experimental work was performed to analyze the potential application of MEOR to the ANS oil fields through both ex situ and in situ approaches. A microbial formulation containing a known biosurfactant-producing strain of Bacillus licheniformis was developed in order to simulate MEOR. Coreflooding experiments were performed to simulate MEOR and quantify the incremental oil recovery. Properties like viscosity, density, and chemical composition of oil were monitored to propose a mechanism for oil recovery. The microbial formulation significantly increased incremental oil recovery, and molecular biological analyses indicated that the strain survived during the shut-in period. The indigenous microflora of ANS heavy oils was investigated to characterize the microbial communities and test for surfactant producers that are potentially useful for biostimulation. Bacteria that reduce the surface tension of aqueous media were isolated from one of the five ANS oils (Milne Point) and from rock oiled by the Exxon Valdez oil spill (EVOS), and may prove valuable for ex situ MEOR strategies. The total bacterial community composition of the six different oils was evaluated using molecular genetic tools, which revealed that each oil tested possessed a unique fingerprint indicating a diverse bacterial community and varied assemblages. Collectively we have demonstrated that there is potential for in situ and ex situ MEOR of ANS oils. Future work should focus on lab and field-scale testing of ex situ MEOR using Bacillus licheniformis as well as the biosurfactant-producing strains we have newly isolated from the Milne Point reservoir and the EVOS environment.

Shirish Patil; Abhijit Dandekar; Mary Beth Leigh

2008-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Experimental study of crossover from capillary to viscous fingering for supercritical CO2 - water displacement in a homogeneous pore network  

Science Conference Proceedings (OSTI)

Carbon sequestration in saline aquifers involves displacing resident brine from the pore space by supercritical CO2 (scCO2). The displacement process is considered unstable due to the unfavorable viscosity ratio (logM = -5.21), respectively. Crossover from capillary to viscous fingering was observed for logCa = -5.91~-5.21, resulting in a large decrease in scCO2 saturation. The discontinuous-rate experimental results confirmed the decrease in nonwetting fluid saturation during crossover from capillary to viscous fingering predicted by numerical simulations by Lenormand et al. (1988).1 Capillary fingering was the only mechanism that dominates all injection rates in the continuous-rate experiment, and resulted in monotonic increase in scCO2 saturation.

Wang, Ying; Zhang, Changyong; Wei, Ning; Oostrom, Martinus; Wietsma, Thomas W.; Li, Xiaochun; Bonneville, Alain HR

2013-01-01T23:59:59.000Z

302

Investigation of a rotary valving system with variable valve timing for internal combustion engines: Final technical report  

DOE Green Energy (OSTI)

The objective of the program was to provide a functional demonstration of the Hansen Rotary Valving System with Variable Valve timing (HRVS/VVT), capable of throttleless inlet charge control, as an alternative to conventional poppet-valves for use in spark ignited internal combustion engines. The goal of this new technology is to secure benefits in fuel economy, broadened torque band, vibration reduction, and overhaul accessibility. Additionally, use of the variable valve timing capability to vary the effective compression ratio is expected to improve multi-fuel tolerance and efficiency. Efforts directed at the design of HRVS components proved to be far more extensive than had been anticipated, ultimately requiring that proof-trial design/development work be performed. Although both time and funds were exhausted before optical or ion-probe types of in-cylinder investigation could be undertaken, a great deal of laboratory data was acquired during the course of the design/development work. This laboratory data is the basis for the information presented in this Final Report.

Cross, P.C.; Hansen, C.N.

1994-11-18T23:59:59.000Z

303

Relaxation and Intermediate Asymptotics of a Rectangular Trench in a Viscous Film  

E-Print Network (OSTI)

The surface of a thin liquid film with nonconstant curvature flattens as a result of capillary forces. While this leveling is driven by local curvature gradients, the global boundary conditions greatly influence the dynamics. Here, we study the evolution of rectangular trenches in a polystyrene nanofilm. Initially, when the two sides of a trench are well separated, the asymmetric boundary condition given by the step height controls the dynamics. In this case, the evolution results from the leveling of two noninteracting steps. As the steps broaden further and start to interact, the global symmetric boundary condition alters the leveling dynamics. We report on full agreement between theory and experiments for: the capillary-driven flow and resulting time dependent height profiles; a crossover in the power-law dependence of the viscous energy dissipation as a function of time as the trench evolution transitions from two noninteracting to interacting steps; and the convergence of the profiles to a universal self-similar attractor that is given by the Green's function of the linear operator describing the dimensionless linearized thin film equation.

Oliver Bäumchen; Michael Benzaquen; Thomas Salez; Joshua D. McGraw; Matilda Backholm; Paul Fowler; Elie Raphaël; Kari Dalnoki-Veress

2013-09-10T23:59:59.000Z

304

Glycerol-Induced Membrane Stiffening: The Role of Viscous Fluid Adlayers  

Science Conference Proceedings (OSTI)

Lipid interfaces, ranging from cell membranes to thin surfactant layers that stabilize lung alveoli, are integral to living systems. Such interfaces are often subjected to mechanical forces, and because of their membrane-like geometry, they can easily deform by bending into localized folds. In this work, we explore the role of small molecules (i.e., glycerol) on the mechanical stability of model lung surfactant monolayers. We demonstrate that the presence of glycerol increases local monolayer bending stiffness by orders of magnitude. Our x-ray and neutron reflectivity measurements indicate that water is preferentially depleted, or glycerol is preferentially enriched, at the lipid headgroup/solvent interface, and that this glycerol-enriched layer extends O(10) beneath the monolayer with an adsorption free energy of 2.5 to 4.6 kJ/mol. The dramatic change in membrane bending stiffness in the presence of the sugar adlayer is understood in terms of two models: (1), lipid antiplasticization by glycerol; and (2), a continuum mechanical model of the viscous adlayer.

Pocivavsek, Luka; Gavrilov, Kseniya; Cao, Kathleen D.; Chi, Eva Y.; Li, Dongxu; Lin, Binhua; Meron, Mati; Majewski, Jaroslaw; Lee, Ka Yee C. (UNM); (UC); (LANL)

2011-12-09T23:59:59.000Z

305

Shock Wave Structure in a Strongly Nonlinear Granular Lattice with Viscous Dissipation  

E-Print Network (OSTI)

The shock wave structure in a one-dimensional lattice (e.g. granular chain) with a power law dependence of force on displacement between particles with viscous dissipation is considered and compared to the corresponding long wave approximation. A dissipative term depending on the relative velocity between neighboring particles is included in the discrete model to investigate its influence on the shape of steady shock profiles. The critical viscosity coefficient is obtained from the long-wave approximation for arbitrary values of the exponent n and denotes the transition from an oscillatory to a monotonic shock profile in stronly nonlinear systems. The expression for the critical viscosity coefficient converges to the known equation for the critical viscosity in the weakly nonlinear case. Values of viscosity based on this expression are comparable to the values obtained in the numerical analysis of a discrete particle lattice with a Herzian contact interaction corresponding to n = 3/2. An initial disturbance in a discrete system approaches a stationary shock profile after traveling a short distance that is comparable to the width of the leading pulse of a stationary shock front. The shock front width is minimized when the viscosity is equal to its critical value.

E. B. Herbold; V. F. Nesterenko

2006-07-07T23:59:59.000Z

306

Probing bulk viscous matter-dominated models with Gamma-ray bursts  

E-Print Network (OSTI)

In this paper we extend the range of consistency of a constant bulk viscosity model to redshifts up to $z\\sim 8.1$. In this model the dark sector of the cosmic substratum is a viscous fluid with pressure $p= -\\zeta \\theta$, where $\\theta$ is the fluid-expansion scalar and $\\zeta$ is the coefficient of bulk viscosity. Using the sample of 59 high-redshift GRBs reported by Wei (2010), we calibrate GRBs at low redshifts with the Union 2 sample of SNe Ia, avoiding then the circularity problem. Testing the constant bulk viscosity model with GRBs we found the best fit for the viscosity parameter $\\tilde{\\zeta}$ in the range $0<\\tilde{\\zeta}<3$, being so consistent with previous probes; we also determined the deceleration parameter $q_0$ and the redshift of transition to accelerated expansion. Besides we present an updated analysis of the model with CMB5-year data and CMB7-year data, as well as with the baryon acoustic peak BAO. From the statistics with CMB it turns out that the model does not describe in a feasible way the far far epoch of recombination of the universe, but is in very good concordance for epochs as far as $z\\sim 8.1$ till present.

A. Montiel; N. Bretón

2011-07-01T23:59:59.000Z

307

Temporal Entropy Generation in the Viscous Layers of Laterally-converging Duct Flows  

SciTech Connect

Since insight into entropy generation is a key to increasing efficiency and thereby reducing fuel consumption and/or waste and -- for wall-bounded flows -- most entropy is generated in the viscous layer, we examine the transient behavior of its dominant contributor there for a non-canonical flow. New measurements in oil flow are presented for the effects of favorable streamwise mean pressure gradients on temporal entropy generation rates and, in the process, on key Reynolds-stress-producing events such as sweep front passage and on the deceleration/outflow phase of the overall bursting process. Two extremes have been considered: (1) a high pressure gradient, nearing "laminarization," and (2), for comparison, a low pressure gradient corresponding to many earlier experiments. In both cases, the peak temporal entropy generation rate occurs shortly after passage of the ejection/sweep interface. Whether sweep and ejection rates appear to decrease or increase with the pressure gradient depends on the feature examined and the manner of sampling. When compared using wall coordinates for velocities, distances and time, the trends and magnitudes of the transient behaviors are mostly the same. The main effects of the higher pressure gradient are (1) changes in the time lag between detections -- representing modification of the shape of the sweep front and the sweep angle with the wall, (2) modification of the magnitude of an instantaneous Reynolds shear stress with wall distance and (3) enlarging the sweeps and ejections. Results new for both low and high pressure gradients are the temporal behaviors of the dominant contribution to entropy generation; it is found to be much more sensitive to distance from the wall than to streamwise pressure gradient.

Donald M. McEligot; Robert S. Brodkey; Helmut Eckelmann

2008-12-01T23:59:59.000Z

308

Enumeration of Juvenile Salmonids in the Okanogan Basin Using Rotary Screw Traps, Performance Period: March 15, 2006 - July 15, 2006.  

DOE Green Energy (OSTI)

The Colville Tribes identified the need for collecting baseline census data on the timing and abundance of juvenile salmonids in the Okanogan River basin for the purpose of documenting local fish populations, augmenting existing fishery data and assessing natural production trends of salmonids. This report documents and assesses the pilot year of rotary trap capture of salmonid smolts on the Okanogan River. The project is a component of the Colville Tribes Okanogan Basin Monitoring and Evaluation Program (OBMEP) which began in 2004. Trapping for outmigrating fish began on 14 March 2006 and continued through 11 July 2006. Anadromous forms of Oncorhynchus, including summer steelhead (O. mykiss), Chinook (O. tshawytscha), and sockeye (O. nerka), were targeted for this study; all have verified, natural production in the Okanogan basin. Both 8-ft and 5-ft rotary screw traps were deployed on the Okanogan River from the Highway 20 Bridge and typically fished during evening hours or 24 hours per day, depending upon trap position and discharge conditions. Juvenile Chinook salmon were the most abundant species trapped in 2006 (10,682 fry and 2,024 smolts), followed by sockeye (205 parr and 3,291 smolts) and steelhead (1 fry and 333 smolts). Of the trapped Chinook, all fry were wild origin and all but five of the smolts were hatchery-reared. All trapped sockeye were wild origin and 88% of the steelhead smolts were hatchery-reared. Mark-recapture experiments were conducted using Chinook fry and hatchery-reared steelhead smolts (sockeye were not used in 2006 because the peak of the juvenile migration occurred prior to the onset of the mark-recapture experiments). A total of 930 chinook fry were marked and released across eight separate release dates (numbers of marked Chinook fry released per day ranged from 34 to 290 fish). A total of 11 chinook fry were recaptured for an overall trap efficiency of 1.18%. A total of 710 hatchery-reared steelhead were marked and released across three separate release dates (numbers of steelhead released per day ranged from 100 to 500 fish). A total of 12 steelhead were recaptured for an overall trap efficiency of 1.69%. A pooled Peterson estimator with a Chapman modification was used to produce population estimates for wild Chinook fry and hatchery-reared steelhead based on the results of the mark-recapture experiments. The 2006 populations for Chinook and steelhead were estimated to be 381,554 (95% confidence intervals: 175,731-587,377) and 14,164 (6,999-21,330), respectively. The population estimates were based on the periods in which mark-recapture experiments were initialized through the end of the trapping season (10 May for steelhead and 1 June for Chinook).

Johnson, Peter N.; Rayton, Michael D.

2007-05-01T23:59:59.000Z

309

Well-posedness for a multi-dimensional viscous gas-liquid two-phase flow model  

E-Print Network (OSTI)

The Cauchy problem of a multi-dimensional ($d\\geqslant 2$) compressible viscous gas-liquid two-phase flow model is concerned in this paper. We investigate the global existence and uniqueness of the strong solution for the initial data close to an equilibrium and the local in time existence and uniqueness of the solution with general initial data in the framework of Besov spaces. In both cases, the possible vacuum state is included in the equilibrium state for the gas component at spatial far field. A continuation criterion is also obtained for the local solution.

Hao, Chengchun

2011-01-01T23:59:59.000Z

310

A safety assessment of rotary mode core sampling in flammable gas single shell tanks: Hanford Site, Richland, Washington  

SciTech Connect

This safety assessment (SA) addresses each of the required elements associated with the installation, operation, and removal of a rotary-mode core sampling (RMCS) device in flammable-gas single-shell tanks (SSTs). The RMCS operations are needed in order to retrieve waste samples from SSTs with hard layers of waste for which push-mode sampling is not adequate for sampling. In this SA, potential hazards associated with the proposed action were identified and evaluated systematically. Several potential accident cases that could result in radiological or toxicological gas releases were identified and analyzed and their consequences assessed. Administrative controls, procedures and design changes required to eliminate or reduce the potential of hazards were identified. The accidents were analyzed under nine categories, four of which were burn scenarios. In SSTS, burn accidents result in unacceptable consequences because of a potential dome collapse. The accidents in which an aboveground burn propagates into the dome space were shown to be in the ``beyond extremely unlikely`` frequency category. Given the unknown nature of the gas-release behavior in the SSTS, a number of design changes and administrative controls were implemented to achieve these low frequencies. Likewise, drill string fires and dome space fires were shown to be very low frequency accidents by taking credit for the design changes, controls, and available experimental and analytical data. However, a number of Bureau of Mines (BOM) tests must be completed before some of the burn accidents can be dismissed with high confidence. Under the category of waste fires, the possibility of igniting the entrapped gases and the waste itself were analyzed. Experiments are being conducted at the BOM to demonstrate that the drill bit is not capable of igniting the trapped gas in the waste. Laboratory testing and thermal analysis demonstrated that, under normal operating conditions, the drill bit will not create high enough temperatures to initiate a propagating reaction in the waste. However, system failure that coincides in a waste layer with high organic content and low moisture may initiate an exothermic reaction in the waste. Consequently, a conservative approach based on the current state of the knowledge resulted in limiting the drilling process to a subset of the flammable-gas tanks. Accidents from the chemical reactions and criticality category are shown to result in acceptable risk. A number of accidents are shown to potentially result in containment (tank liner) breach below the waste level. Mitigative features are provided for these accidents. Gas-release events without burn also are analyzed, and radiological and toxicological consequences are shown to be within risk guidelines. Finally, the consequences of potential spills are shown to be within the risk guidelines.

Raymond, R.E.

1996-04-15T23:59:59.000Z

311

Development of a cable reel development system using a rotary joint for kilometer lengths of two-fiber multi-mode fiber optic cable  

SciTech Connect

Brookhaven National Laboratory (BNL) recently developed a two-component system for use during remote inspections. The system consists of a mobile unit with television cameras and other equipment and a stationary base station. A variety of signals must be continually transmitted between the two system components as the mobile unit is moved from the location to another. Two channels of broadband (10MHz) NTSC video are transmitted from the mobile unit to the base station, and a bi-directional ``talk set`` provides audio communication between personnel at each location. In addition, several channels of RS-232 are required to support present and future instruments used at the mobile unit and controlled by personnel at the base station. Brookhaven developed a mobile unit which communicated with a base station over a 2-fiber multimode fiber optic cable. One of the design requirements was maintaining constant communication with the base station during the time the mobile unit was moved about. To provide uninterrupted communications, deployment of the 1-km long fiber optic cable was initially performed with a ``spinning reel`` mechanism. The spinning reel mechanism proved to be mechanically unsuitable, and so the cable deployment mechanism was redesigned to spool the cable off the reel. The requirement for uninterrupted communications required a two-channel fiber optic rotary joint in the design. Incorporation of the rotary joint into the design is described, and appropriate reference material is included.

Curtiss, J.A.; Jahelka, J.R.

1995-08-11T23:59:59.000Z

312

Rotary bulk solids divider  

DOE Patents (OSTI)

An apparatus for the disbursement of a bulk solid sample comprising, a gravity hopper having a top open end and a bottom discharge end, a feeder positioned beneath the gravity hopper so as to receive a bulk solid sample flowing from the bottom discharge end, and a conveyor receiving the bulk solid sample from the feeder and rotating on an axis that allows the bulk solid sample to disperse the sample to a collection station.

Maronde, Carl P. (McMurray, PA); Killmeyer, Jr., Richard P. (Pittsburgh, PA)

1992-01-01T23:59:59.000Z

313

Rotary slot dog  

SciTech Connect

A clamp or dog is disclosed which preferably comprises a slotted stepped cylindrical body which is inserted into a hole in a workpiece and then fastened to a base or fixture using a screw which is inserted through the slot. The stepped configuration provides an annular clamping surface which securely clamps the workpiece against the base or fixture. The slotted cylindrical configuration permits adjustment of the workpiece and retaining clamp in any direction, i.e., over 360.degree., relative to the mounting position of the screw in the base or fixture.

Cutburth, Ronald W. (Tracy, CA); Smauley, David A. (Livermore, CA)

1987-01-01T23:59:59.000Z

314

Rotary drilling jar  

SciTech Connect

This patent describes an improved jar for use in freeing well tools and the like stuck in a well bore. The improvement comprises: tubular, inner mandrel means having a downwardly facing shoulder and having an annular groove in an exterior surface located relatively below the shoulder. The annular groove in the inner mandrel means tapers inwardly from an exterior surface of the inner mandrel means. The inner mandrel means are arranged for connection to a conduit when positioned in the well bore; and tubular, outer mandrel means encircling the inner mandrel means and arranged at a lower end for connection to the well to tool and having an upwardly facing abutment engageable with the downwardly facing shoulder.

Loeb, J.B.; Osborne, A.J.; Miglierini, R.A.

1987-05-05T23:59:59.000Z

315

Pore-Level Modeling of Carbon Dioxide Sequestration in Oil Fields: A study of viscous and buoyancy forces  

NLE Websites -- All DOE Office Websites (Extended Search)

Sequestration in Oil Fields: A Sequestration in Oil Fields: A study of viscous and buoyancy forces Grant S. Bromhal, U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, WV 26507-0880, gbromhal@netl.doe.gov, M. Ferer, Department of Physics, West Virginia University, and Duane H. Smith, U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, WV 26507-0880 Underground injection of carbon dioxide for enhanced oil recovery (EOR) is a common practice in the oil and gas industry and has often been cited as a proven method of sequestering CO 2 (US DOE, 1999). Of all sequestration methods, this is probably the best understood, as carbon dioxide has been used in the oil industry for many years. Additionally, most oil fields have been relatively well characterized geologically, and

316

Build a Floating Oil Rig  

Energy.gov (U.S. Department of Energy (DOE))

The U.S. Department of the Interior's Minerals Management Service developed this teacher's guide about the many energy resources found in, over, and under the ocean. Includes sections on petroleum,...

317

Well servicing rig market report  

Science Conference Proceedings (OSTI)

This article profiles the well servicing industry, focusing on the problems facing the industry under currently depressed market conditions. The problems of rising operating costs, oil price uncertainty, and aging equipment are addressed specifically.

Killalea, M

1989-01-01T23:59:59.000Z

318

Enhanced Oil Recovery of Viscous Oil by Injection of Water-in-Oil Emulsion Made with Used Engine Oil  

E-Print Network (OSTI)

Solids-stabilized water-in-oil emulsions have been suggested as a drive fluid to recover viscous oil through a piston-like displacement pattern. While crude heavy oil was initially suggested as the base oil, an alternative oil ? used engine oil was proposed for emulsion generation because of several key advantages: more favorable viscosity that results in better emulsion injectivity, soot particles within the oil that readily promote stable emulsions, almost no cost of the oil itself and relatively large supply, and potential solution of used engine oil disposal. In this research, different types of used engine oil (mineral based, synthetic) were tested to make W/O emulsions simply by blending in brine. A series of stable emulsions was prepared with varied water contents from 40~70%. Viscosities of these emulsions were measured, ranging from 102~104 cp at low shear rates and ambient temperature. Then an emulsion made of 40% used engine oil and 60% brine was chosen for a series of coreflood experiments, to test the stability of this emulsion while flowing through porous media. Limited breakdown of the effluent was observed at ambient injection rates, indicating a stability of the emulsion in porous media. Pressure drops leveled off and remained constant at constant rate of injection, indicating steady-state flows under the experimental conditions. No plug off effect was observed after a large volume of emulsion passed through the cores. Reservoir scale simulations were conducted for the emulsion flooding process based on the emulsion properties tested from the experiments. Results showed significant improvement in both displacement pattern and oil recovery especially compared to water flooding. Economics calculations of emulsion flooding were also performed, suggesting this process to be highly profitable.

Fu, Xuebing

2012-12-01T23:59:59.000Z

319

Viscous Sheet Retraction  

E-Print Network (OSTI)

We present the results of a combined theoretical and numerical investigation of the rim-driven retraction of flat fluid sheets in both planar and circular geometries. Particular attention is given to the influence of the ...

Savva, Nikos

320

Electric field Induced Patterns in Soft Visco-elastic films: From Long Waves of Viscous Liquids to Short Waves of Elastic Solids  

E-Print Network (OSTI)

We show that the electric field driven surface instability of visco-elastic films has two distinct regimes: (1) The visco-elastic films behaving like a liquid display long wavelengths governed by applied voltage and surface tension, independent of its elastic storage and viscous loss moduli, and (2) the films behaving like a solid require a threshold voltage for the instability whose wavelength always scales as ~ 4 x film thickness, independent of its surface tension, applied voltage, loss and storage moduli. Wavelength in a narrow transition zone between these regimes depends on the storage modulus.

N. Arun; Ashutosh Sharma; Partho S. G. Pattader; Indrani Banerjee; Hemant M. Dixit; K. S. Narayan

2009-06-02T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Reduction of iron-oxide-carbon composites: part II. Rates of reduction of composite pellets in a rotary hearth furnace simulator  

SciTech Connect

A new ironmaking concept is being proposed that involves the combination of a rotary hearth furnace (RHF) with an iron-bath smelter. The RHF makes use of iron-oxide-carbon composite pellets as the charge material and the final product is direct-reduced iron (DRI) in the solid or molten state. This part of the research includes the development of a reactor that simulated the heat transfer in an RHF. The external heat-transport and high heating rates were simulated by means of infrared (IR) emitting lamps. The reaction rates were measured by analyzing the off-gas and computing both the amount of CO and CO{sub 2} generated and the degree of reduction. The reduction times were found to be comparable to the residence times observed in industrial RHFs. Both artificial ferric oxide (PAH) and naturally occurring hematite and taconite ores were used as the sources of iron oxide. Coal char and devolatilized wood charcoal were the reductants. Wood charcoal appeared to be a faster reductant than coal char. However, in the PAH-containing pellets, the reverse was found to be true because of heat-transfer limitations. For the same type of reductant, hematite-containing pellets were observed to reduce faster than taconite-containing pellets because of the development of internal porosity due to cracking and fissure formation during the Fe2O{sub 3}-to-Fe3O{sub 4} transition. This is, however, absent during the reduction of taconite, which is primarily Fe3O{sub 4}. The PAH-wood-charcoal pellets were found to undergo a significant amount of swelling at low-temperature conditions, which impeded the external heat transport to the lower layers. If the average degree of reduction targeted in an RHF is reduced from 95 to approximately 70 pct by coupling the RHF with a bath smelter, the productivity of the RHF can be enhanced 1.5 to 2 times. The use of a two- or three-layer bed was found to be superior to that of a single layer, for higher productivities.

Halder, S.; Fruehan, R.J. [Praxair Inc., Tonawanda, NY (United States). Praxair Technological Center

2008-12-15T23:59:59.000Z

322

Conveyor with rotary airlock apparatus  

DOE Patents (OSTI)

This invention is comprised of an apparatus for transferring objects from a first region to a second region, the first and second regions having differing atmospheric environments. The apparatus includes a shell having an entrance and an exit, a conveyer belt running through the shell from the entrance to the exit, and a horizontally mounted `revolving door` with at least four vanes revolving about its axis. The inner surface of the shell and the top surface of the conveyer belt act as opposing walls of the `revolving door`. The conveyer belt dips as it passes under but against the revolving vanes so as not to interfere with them but to engage at least two of the vanes and define thereby a moving chamber. Preferably, the conveyer belt has ridges or grooves on its surface that engage the edges of the vanes and act to rotate the vane assembly. Conduits are provided that communicate with the interior of the shell and allow the adjustment of the atmosphere of the moving chamber or recovery of constituents of the atmosphere of the first region from the moving chamber before they escape to the second region.

Kronbert, J.W.

1993-01-01T23:59:59.000Z

323

Rotary powder feed through apparatus  

DOE Patents (OSTI)

A device for increasing the uniformity of solids within a solids fabrication system, such as a direct light fabrication (DLF) system in which gas entrained powders are passed through the focal point of a moving high-power light which fuses the particles in the powder to a surface being built up in layers. The invention provides a feed through interface wherein gas entrained powders input from stationary input lines are coupled to a rotating head of the fabrication system. The invention eliminates the need to provide additional slack in the feed lines to accommodate head rotation, and therefore reduces feed line bending movements which induce non-uniform feeding of gas entrained powder to a rotating head.

Lewis, Gary K. (Los Alamos, NM); Less, Richard M. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

324

High-Temperature-Turbine Technology Program: Phase II. Technology test and support studies. Design and development of the liquid-fueled high-temperature combustor for the Turbine Spool Technology Rig  

SciTech Connect

The concept selected by Curtiss-Wright for this DOE sponsored High Temperature Turbine Technology (HTTT) Program utilizes transpiration air-cooling of the turbine subsystem airfoils. With moderate quantities of cooling air, this method of cooling has been demonstrated to be effective in a 2600 to 3000/sup 0/F gas stream. Test results show that transpiration air-cooling also protects turbine components from the aggressive environment produced by the combustion of coal-derived fuels. A new single-stage, high work transpiration air-cooled turbine has been designed and fabricated for evaluation in a rotating test vehicle designated the Turbine Spool Technology Rig (TSTR). The design and development of the annular combustor for the TSTR are described. Some pertinent design characteristics of the combustor are: fuel, Jet A; inlet temperature, 525/sup 0/F; inlet pressure, 7.5 Atm; temperature rise, 2475/sup 0/F; efficiency, 98.5%; exit temperature pattern, 0.25; and exit mass flow, 92.7 pps. The development program was conducted on a 60/sup 0/ sector of the full-round annular combustor. Most design goals were achieved, with the exception of the peak gas exit temperature and local metal temperatures at the rear of the inner liner, both of which were higher than the design values. Subsequent turbine vane cascade testing established the need to reduce both the peak gas temperature (for optimum vane cooling) and the inner liner metal temperature (for combustor durability). Further development of the 60/sup 0/ combustor sector achieved the required temperature reductions and the final configuration was incorporated in the TSTR full-annular burner.

1981-06-01T23:59:59.000Z

325

Natural Gas - U.S. Energy Information Administration (EIA) - U.S. Energy  

Gasoline and Diesel Fuel Update (EIA)

23, 2012 | Release Date: May 24, 23, 2012 | Release Date: May 24, 2012 | Next Release: May 31, 2012 Previous Issues Week: 01/19/2014 (View Archive) JUMP TO: In The News | Overview | Prices/Demand/Supply | Storage In the News: Natural Gas Rig Count Briefly Drops Below 600. The natural gas rotary rig count, as reported by Baker Hughes Incorporated, rose by 2 this week to 600, after falling to a 10-year low of 598 last week. After increasing modestly to 936 active rigs in the fall of 2011, the natural gas rig count has dropped sharply. The oil rig count, currently at 1,382, has generally risen steadily since 2009, largely in response to increasing crude oil prices. Natural gas rigs are currently down about 31 percent from their level at the same time last year, while oil rigs have risen by 45 percent over the

326

Systematic parameter study of hadron spectra and elliptic flow from viscous hydrodynamic simulations of Au+Au collisions at {radical}(s{sub NN})=200 GeV  

Science Conference Proceedings (OSTI)

Using the (2+1)-dimensional viscous hydrodynamic code vish2+1[H. Song and U. Heinz, Phys. Lett. B 658, 279 (2008); H. Song and U. Heinz, Phys. Rev. C 77, 064901 (2008); H. Song, Ph. D. thesis, The Ohio State University, 2009], we present systematic studies of the dependence of pion and proton transverse-momentum spectra and their elliptic flow in 200A GeV Au+Au collisions on the parameters of the hydrodynamic model (thermalization time, initial entropy density distribution, decoupling temperature, equation of state, and specific shear viscosity {eta}/s). We identify a tension between the slope of the proton spectra, which (within hydrodynamic simulations that assume a constant shear viscosity to entropy density ratio) prefer larger {eta}/s values, and the slope of the p{sub T} dependence of charged hadron elliptic flow, which prefers smaller values of {eta}/s. Changing other model parameters does not appear to permit dissolution of this tension.

Shen Chun; Heinz, Ulrich; Huovinen, Pasi; Song, Huichao [Department of Physics, Ohio State University, Columbus, Ohio 43210-1117 (United States); Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet, Max-von-Laue-Strasse 1, D-60438 Frankfurt am Main (Germany); Department of Physics, Ohio State University, Columbus, Ohio 43210-1117 (United States) and Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS70R0319, Berkeley, California 94720 (United States)

2010-11-15T23:59:59.000Z

327

Relativistic Dynamics of Non-ideal Fluids: Viscous and heat-conducting fluids I. General Aspects and 3+1 Formulation for Nuclear Collisions  

E-Print Network (OSTI)

Relativistic non-ideal fluid dynamics is formulated in 3+1 space--time dimensions. The equations governing dissipative relativistic hydrodynamics are given in terms of the time and the 3-space quantities which correspond to those familiar from non-relativistic physics. Dissipation is accounted for by applying the causal theory of relativistic dissipative fluid dynamics. As a special case we consider a fluid without viscous/heat couplings in the causal system of transport/relaxation equations. For the study of physical systems we consider pure (1+1)-dimensional expansion in planar geometry, (1+1)-dimensional spherically symmetric ({\\em fireball}) expansion, (1+1)-dimensional cylindrically symmetric expansion and a (2+1)-dimensional expansion with cylindrical symmetry in the transverse plane ({\\em firebarell} expansion). The transport/relaxation equations are given in terms of the spatial components of the dissipative fluxes, since these are not independent. The choice for the independent components is analogous to the non-relativistic equations.

Azwinndini Muronga

2006-11-25T23:59:59.000Z

328

Drill Rig Safety Topics of the Presentation  

E-Print Network (OSTI)

· Check oil level daily -engine oil & coolant -compressor air/oil tank -hydraulic tank -pump oil (water injection, mud, etc.) -pump drive gearboxes · Grease daily (must purge dirt) ­ Floating Sub ­ Rollers ­ Air · Fuel and Oil Leaks · Hose Leaks and Failures · Electrical · Smoking #12;Schramm Electrical Safety

329

Rigs Drilling Gas Wells Are At  

U.S. Energy Information Administration (EIA)

The increasing number of resulting gas well completions have been expanding production in major producing States, such as Texas. For the year 2000, ...

330

THE EFFECT OF A VERTICAL MAGNETIC FIELD ON THE PROPAGATION OF GRAVITY WAVES ALONG THE PLANE OF A SEMI-INFINITE VISCOUS, ELECTRICALLY CONDUCTING FLUID  

SciTech Connect

Basic equations and boundary conditions governing effects of vertical magnetic and gravitational fields on smallamplitude perturbations of the free equilibrium surfuce of a viscous, electrically conducting fluid are presented. Normal modes are examined. A dispersion relationship is derived which relates the complex "frequency" n of the normal mode to the Alfven velocity, V; the viscosity, v,; the magnetic diffusivity, lambda ; and the horizontal wave number, k. This dispersioh relationship is solved in nine extreme cases. In six of these, the magnetic field is too wesk to modify substantially the familiar gravity-wave solution holding in the absence of a magnetic field. The influence of the field is so strong in the remaining three cases that they have no parallel in the zero-field case. 0ne of these holds for any k if the magnetic field is sufficiently strong. In this case n = -gV/sup -1/( lambda /v)1/2i.e., the effect of the magnetic field is so great that the disturbance is attenuated aperiodically as the Alfven waves radiate energy away from the free surfuce. Another interesting feature demonstrated is the existence (if V is sufficiently large) of a band of wave numbers k for which no normal-mode solution exists. It is nevertheless demonstrated that the associated initialvalue problem can be solved for such values of k. In addition to the nine extreme cases mentioned above, three special cases are solved for all k for particular values of V, namely, v = lambda , v = 0, and lambda = 0. (auth)

Roberts, P.H.; Boardman, A.D.

1962-03-01T23:59:59.000Z

331

Development of a Front Tracking Method for Two-Phase Micromixing of Incompressible Viscous Fluids with Interfacial Tension in Solvent Extraction  

SciTech Connect

This progress report describes the development of a front tracking method for the solution of the governing equations of motion for two-phase micromixing of incompressible, viscous, liquid-liquid solvent extraction processes. The ability to compute the detailed local interfacial structure of the mixture allows characterization of the statistical properties of the two-phase mixture in terms of droplets, filaments, and other structures which emerge as a dispersed phase embedded into a continuous phase. Such a statistical picture provides the information needed for building a consistent coarsened model applicable to the entire mixing device. Coarsening is an undertaking for a future mathematical development and is outside the scope of the present work. We present here a method for accurate simulation of the micromixing dynamics of an aqueous and an organic phase exposed to intense centrifugal force and shearing stress. The onset of mixing is the result of the combination of the classical Rayleigh- Taylor and Kelvin-Helmholtz instabilities. A mixing environment that emulates a sector of the annular mixing zone of a centrifugal contactor is used for the mathematical domain. The domain is small enough to allow for resolution of the individual interfacial structures and large enough to allow for an analysis of their statistical distribution of sizes and shapes. A set of accurate algorithms for this application requires an advanced front tracking approach constrained by the incompressibility condition. This research is aimed at designing and implementing these algorithms. We demonstrate verification and convergence results for one-phase and unmixed, two-phase flows. In addition we report on preliminary results for mixed, two-phase flow for realistic operating flow parameters.

Zhou, Yijie [ORNL; Lim, Hyun-Kyung [ORNL; de Almeida, Valmor F [ORNL; Navamita, Ray [State University of New York, Stony Brook; Wang, Shuqiang [State University of New York, Stony Brook; Glimm, James G [ORNL; Li, Xiao-lin [State University of New York, Stony Brook; Jiao, Xiangmin [ORNL

2012-06-01T23:59:59.000Z

332

Natural Gas - U.S. Energy Information Administration (EIA) - U.S. Energy  

Gasoline and Diesel Fuel Update (EIA)

30, 2012 | Release Date: May 31, 30, 2012 | Release Date: May 31, 2012 | Next Release: June 7, 2012 Previous Issues Week: 12/29/2013 (View Archive) JUMP TO: In The News | Overview | Prices/Demand/Supply | Storage In the News: Natural Gas Rigs Decline in Key Areas Active natural gas rotary rigs currently total 594, according to the latest weekly data released by Baker Hughes Incorporated. According to Baker Hughes data, natural gas-directed horizontal rigs have driven the decline in total natural gas rigs over the past several months. Horizontal-directed natural gas rig counts have fallen to 411, from levels in the low-600s a year ago. Declines have occurred in key areas of dry shale gas production, particularly in Louisiana, where the Haynesville Shale is located. The number of horizontal natural gas rigs drilling in Louisiana has fallen from

333

Movement and Injury Rates for Three Life Stages of Spring Chinook Salmon Oncorhynchus Tshawytscha : A Comparison of Submerged Orifices and an Overflow Weir for Fish Bypass in a Modular Rotary Drum Fish Screen : Annual Report 1995.  

DOE Green Energy (OSTI)

The Pacific Northwest National Laboratory (PNNL) evaluated the effectiveness of 6-in. and 2-in. submerged orifices, and an overflow weir for fish bypass at a rotary drum fish screening facility. A modular drum screen built by the Washington Department of Fish and Wildlife (WDFW) was installed at PNNL`s Aquatic Ecology research laboratory in Richland, Washington. Fry, subyearlings, and smolts of spring chinook salmon (Oncorhynchus tshawyacha) were introduced into the test system, and their movement and injury rates were monitored. A total of 33 tests (100 fish per test) that lasted from 24 to 48 hr were completed from 1994 through 1995. Passage rate depended on both fish size and bypass configuration. For fry/fingerling spring chinook salmon, there was no difference in passage rate through the three bypass configurations (2-in. orifice, 6-in. orifice, or overflow weir). Subyearlings moved sooner when the 6-in. orifice was used, with more than 50% exiting through the fish bypass in the first 8 hr. Smolts exited quickly and preferred the 6-in. orifice, with over 90% of the smolts exiting through the bypass in less than 2 hr. Passage was slightly slower when a weir was used, with 90% of the smolts exiting in about 4 hr. When the 2-in. orifice was used in the bypass, 90% of the smolts did not exit until after 8 hr. In addition, about 7% of the smolts failed to migrate from the forebay within 24 hr, indicating that smolts were significantly delayed when the 2-in. orifice was used. Few significant injuries were detected for any of the life stages. However, light descaling occurred on about 15% of chinook salmon smolts passing through the 2-in. orifice. Although a single passage through the orifice did not appear to cause significant scale loss or other damage, passing through several screening facilities with 2-in. orifices could cause cumulative injuries.

Abernethy, C. Scott; Neitzel, Duane A.; Mavros, William V.

1996-03-01T23:59:59.000Z

334

Word Pro - S5  

U.S. Energy Information Administration (EIA) Indexed Site

Crude Oil and Natural Gas Resource Development Indicators Rotary Rigs in Operation by Type, 1949-2012 Rotary Rigs in Operation by Type, Monthly Active Well Service Rig Count, Monthly Total Wells Drilled by Type, 1949-2010 . 76 U.S. Energy Information Administration / Monthly Energy Review November 2013 Total 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 0 1 2 3 4 Thousand Rigs 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 0 10 20 30 40 50 Thousand Wells Dry Wells Crude Oil Wells Web Page: http://www.eia.gov/totalenergy/data/monthly/#crude. Sources: Tables 5.1 and 5.2. Crude Oil J FMAMJ J A SOND J FMAMJ J A SOND J FMAMJ J

335

Word Pro - S5  

U.S. Energy Information Administration (EIA) Indexed Site

Crude Oil and Natural Gas Crude Oil and Natural Gas Resource Development Figure 5.1 Crude Oil and Natural Gas Resource Development Indicators Rotary Rigs in Operation by Type, 1949-2012 Rotary Rigs in Operation by Type, Monthly Active Well Service Rig Count, Monthly Total Wells Drilled by Type, 1949-2010 . 76 U.S. Energy Information Administration / Monthly Energy Review November 2013 Total 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 0 1 2 3 4 Thousand Rigs 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 0 10 20 30 40 50 Thousand Wells Dry Wells Crude Oil Wells Web Page: http://www.eia.gov/totalenergy/data/monthly/#crude. Sources: Tables 5.1 and 5.2.

336

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8 8 HOISTS 8-i Chapter 8 Hoists This chapter provides safety standards for inspecting, testing, and operating hoists not permanently mounted on overhead cranes and implements the requirements of ASME B30.11 ("Monorail Systems and Underhung Cranes"), B30.16["Overhead Hoists (Underhung)"], and B30.21 ("Manually Lever Operated Hoists"). 8.1 GENERAL .................................................................................................................................8-1 8.1.1 Operator Training/Qualification ..................................................................................8-4 8.1.2 Marking........................................................................................................................8-4

337

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6 6 PERSONNEL QUALIFICATION AND TRAINING 6-i Chapter 6 Personnel Qualification and Training This chapter describes personnel qualification and training. Only qualified personnel shall operate the equipment covered in this standard. 6.1 GENERAL ................................................................................................................................6-1 6.2 QUALIFICATION...................................................................................................................6-2 6.2.1 General.........................................................................................................................6-2 6.2.2 Operators of Cab-Operated and Pulpit-Operated Cranes .............................................6-2

338

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0 0 FORKLIFT TRUCKS 10-i Chapter 10 Forklift Trucks This chapter specifies operation, inspection, testing, and maintenance requirements for forklift trucks powered by internal-combustion engines or electric motors and implements the requirements of ASME B56.1 ("Safety Standard for powered Industrial Trucks - Low Lift and High lift Trucks") and B56.6 ("Rough Terrain Fork Lift Trucks"), and ANSI/UL 558 ("Internal-Combustion-Engine-Powered Industrial Trucks") and 583 ("Electric-Battery-Powered Industrial Trucks"). 10.1 GENERAL ...............................................................................................................................10-1 10.1.1 Operator Training/Qualification ................................................................................10-1

339

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

019-2004 019-2004 CHAPTER 16 MISCELLANEOUS LIFTING DEVICES 16-i Chapter 16 Miscellaneous Lifting Devices This chapter provides safety standards designated to sign verify, based on personal observations, certified records, or direct reports, that a specific action has been performed in accordance with specified requirements. For the operation, inspection, testing, and maintenance for miscellaneous lifting devices, (truck mounted cranes - capacity 1 ton or less not covered in ASME B30.5 ("Mobile and Locomotive Cranes") and implements the requirements of ASME PALD ("Portable Automotive Lifting Devices") for self contained shop cranes. 16.1 GENERAL ..................................................................................................................................

340

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7 7 OVERHEAD AND GANTRY CRANES 7-i Chapter 7 Overhead and Gantry Cranes This chapter specifies operation, inspection, maintenance, and testing requirements for the use of overhead and gantry cranes and implements the requirements of ASME B30.2 ["Overhead and Gantry Cranes (Top- Running Bridge, Single or Multiple Girder, Top-Running Trolley Hoist)"], B30.11 ("Monorail Systems and Underhung Cranes"), and B30.17 ["Overhead and Gantry Cranes (Top-Running Bridge, Single Girder, Underhung Hoist")]. Only equipment built to the appropriate design standards shall be used in DOE installations. 7.1 GENERAL .................................................................................................................................7-1

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6 6 PERSONNEL QUALIFICATION AND TRAINING 6-i Chapter 6 Personnel Qualification and Training This chapter describes personnel qualification and training. Only qualified personnel shall operate the equipment covered in this standard. 6.1 GENERAL................................................................................................................................6-1 6.2 QUALIFICATION...................................................................................................................6-2 6.2.1 General.........................................................................................................................6-2 6.2.2 Operators of Cap-Operated and Pulpit-Operated Cranes .............................................6-2

342

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DEFINITIONS DEFINITIONS ................................................. 1-1 CHAPTER 2 CRITICAL LIFTS................................................................................. 2-1 2.1 CRITICAL-LIFT DETERMINATION........................................................ 2-1 2.2 CRITIAL-LIFT REQUIREMENTS............................................................. 2-2 CHAPTER 3 PREENGINEERED PRODUCTION LIFTS................................3-1 3.1 GENERAL....................................................................................................... 3-1 3.2 OPERATION EVALUATION ...................................................................... 3-2 3.2.1 Load Identification................................................................................

343

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0 0 FORKLIFT TRUCKS 10-i This chapter specifies operation, inspection, testing, and maintenance requirements for forklift trucks powered by internal-combustion engines or electric motors and implements the requirements of ANSI/ITSDF B56.1 ("Safety Standard for powered Industrial Trucks - Low Lift and High lift Trucks") and ANSI/ITSDF B56.6 ("Rough Terrain Fork Lift Trucks"), and ANSI/UL 558 ("Internal-Combustion- Engine-Powered Industrial Trucks") and ANSI/UL 583 ("Electric-Battery-Powered Industrial Trucks"). 10.1 GENERAL ...............................................................................................................................10-1 10.1.1 Operator Training/Qualification ................................................................................10-1

344

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3 3 PREENGINEERED PRODUCTION LIFTS 3-i Chapter 3 Preengineered Production Lifts This chapter provides requirements for the design, evaluation, and performance of preengineered production lifts. This lift designation may be used at the discretion of the contractor for selected operations. 3.1 GENERAL................................................................................................................................3-1 3.2 OPERATION EVALUATION................................................................................................3-2 3.2.1 Load Identification.......................................................................................................3-2 3.2.2 Task Determination......................................................................................................3-2

345

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7 7 REFERENCES 17-1 Chapter 17 References American Institute of Steel Construction AISC Specifications for the design, fabrication, and erection of structural steel for buildings. American Iron and Steel Institute AISI Standards for Type-302 or Type-304 stainless steel. American National Standards Institute and the American Society of Mechanical Engineers ANSI A10.28, Work Platforms Suspended From Cranes or Derricks. ANSI A10.18, Floor and Wall Openings, Railings and Toe Boards. ASME B30.1, Jacks ASME B30.2, Overhead and Gantry Cranes (Top-Running Bridge, Single or Multiple Girder, Top-Running Trolley Hoist). ASME B30.5, Mobile and Locomotive Cranes. ASME B30.6, Derricks. ASME B30.7, Base-Mounted Drum Hoists. ASME B30.9, Slings.

346

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3 3 PREENGINEERED PRODUCTION LIFTS 3-i Chapter 3 Preengineered Production Lifts This chapter provides requirements for the design, evaluation, and performance of preengineered production lifts. This lift designation may be used at the discretion of the contractor for selected operations. 3.1 PREENGINEERED PRODUCTION LIFT DETERMINATION.......................................3-1 3.2 LIFTING FIXTURES..............................................................................................................3-2 3.2.1 Design ..........................................................................................................................3-2 3.2.2 Fabrication ...................................................................................................................3-2

347

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 2 CRITICAL LIFTS 2-i Chapter 2 Critical Lifts This chapter provides guidelines for critical-lift determination and requirements for planning and performing a critical lift safely and judiciously. 2.1 CRITICAL-LIFT DETERMINATION ................................................................ 2-1 2.2 CRITICAL-LIFT REQUIREMENTS ............................................................. 2-2 DOE-STD-1090-2007 Chapter 2 2-ii Critical Lifts INTENTIONALLY BLANK DOE-STD-1090-2007 2.1 CRITICAL-LIFT DETERMINATION 2-1 Chapter 2 Critical Lifts a. An appointed person shall classify each lift into one of the DOE categories (ordinary, critical, or preengineered production) prior to planning the lift. b. A lift shall be designated critical if any of

348

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 2 CRITICAL LIFTS 2-i Chapter 2 Critical Lifts This chapter provides guidelines for critical-lift determination and requirements for planning and performing a critical lift safely and judiciously. 2.1 CRITICAL-LIFT DETERMINATION ................................................................ 2-1 2.2 CRITICAL-LIFT REQUIREMENTS ............................................................. 2-2 DOE-STD-1090-2004 Chapter 2 2-ii Critical Lifts INTENTIONALLY BLANK DOE-STD-1090-2004 2.1 CRITICAL-LIFT DETERMINATION 2-1 Chapter 2 Critical Lifts a. An appointed person shall classify each lift into one of the DOE categories (ordinary, critical, or preengineered production) prior to planning the lift. b. A lift shall be designated critical if any of

349

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4 4 LIFTING PERSONNEL 4-i Chapter 4 Lifting Personnel This chapter describes requirements for lifting personnel. 4.1 GENERAL................................................................................................................................4-1 4.1.1 Personnel Lifting Evaluation .......................................................................................4-1 4.1.2 Designated Leader .......................................................................................................4-1 4.1.3 Trial Lift.......................................................................................................................4-2 4.1.4 Lifting Operations........................................................................................................4-2

350

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CHAPTER 17 CHAPTER 17 REFERENCES 17-1 Chapter 17 References American Institute of Steel Construction AISC Specifications for the design, fabrication, and erection of structural steel for buildings. American Iron and Steel Institute AISI Standards for Type-302 or Type-304 stainless steel. American National Standards Institute and American Society of Mechanical Engineers ANSI A10.28, Work Platforms Suspended From Cranes or Derricks. ANSI A10.18, Floor and Wall Openings, Railings and Toe Boards. ASME B30.2, Overhead and Gantry Cranes (Top-Running Bridge, Single or Multiple Girder, Top-Running Trolley Hoist). ASME B30.5, Mobile and Locomotive Cranes. ASME B30.6, Derricks. ASME B30.7, Base-Mounted Drum Hoists. ASME B30.9, Slings. ASME B30.10, Hooks.

351

DOE-STD-1090-2007; Hoisting and Rigging Standard (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DEFINITIONS........................................1-1 DEFINITIONS........................................1-1 CHAPTER 2 CRITICAL LIFTS .......................................................................2-1 2.1 CRITICAL-LIFT DETERMINATION........................................................ 2-1 2.2 CRITIAL-LIFT REQUIREMENTS............................................................. 2-2 CHAPTER 3 PREENGINEERED PRODUCTION LIFTS................................3-1 3.1 PRENGINEERED PRODUCTION LIFT DETERMINATION................ 3-1 3.2 LIFTING FIXTURES .................................................................................... 3-2 3.3.1 Design ................................................................................................... 3-2 3.3.2 Fabrication ............................................................................................

352

U.S. oil rig count overtakes natural gas rig count - Today in ...  

U.S. Energy Information Administration (EIA)

Petroleum & Other Liquids. Crude oil, gasoline, heating oil, diesel, propane, and other liquids including biofuels and natural gas liquids. Natural Gas

353

DOE-STD-1090-2004; Hoisting and Rigging (Formerly Hoisting and Rigging Manual)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9 9 MOBILE CRANES 9-i Chapter 9 Mobile Cranes This chapter specifies operation, inspection, maintenance, and testing requirements for the use of mobile cranes and implements the requirements of ASME B30.5 ("Mobile and Locomotive Cranes"). Only equipment built to appropriate design standards shall be used at DOE installations. 9.1 GENERAL .................................................................................................................................9-1 9.1.1 Operator Training/Qualification ..................................................................................9-1 9.1.2 Load Limits..................................................................................................................9-1 9.1.3 Load Rating Chart........................................................................................................9-1

354

Stabilizing geometry for hydrodynamic rotary seals  

DOE Patents (OSTI)

A hydrodynamic sealing assembly including a first component having first and second walls and a peripheral wall defining a seal groove, a second component having a rotatable surface relative to said first component, and a hydrodynamic seal comprising a seal body of generally ring-shaped configuration having a circumference. The seal body includes hydrodynamic and static sealing lips each having a cross-sectional area that substantially vary in time with each other about the circumference. In an uninstalled condition, the seal body has a length defined between first and second seal body ends which varies in time with the hydrodynamic sealing lip cross-sectional area. The first and second ends generally face the first and second walls, respectively. In the uninstalled condition, the first end is angulated relative to the first wall and the second end is angulated relative to the second wall. The seal body has a twist-limiting surface adjacent the static sealing lip. In the uninstalled condition, the twist-limiting surface is angulated relative to the peripheral wall and varies along the circumference. A seal body discontinuity and a first component discontinuity mate to prevent rotation of the seal body relative to the first component.

Dietle, Lannie L. (Houston, TX); Schroeder, John E. (Richmond, TX)

2010-08-10T23:59:59.000Z

355

Rotary steerable motor system for underground drilling  

Science Conference Proceedings (OSTI)

A preferred embodiment of a system for rotating and guiding a drill bit in an underground bore includes a drilling motor and a drive shaft coupled to drilling motor so that drill bit can be rotated by the drilling motor. The system further includes a guidance module having an actuating arm movable between an extended position wherein the actuating arm can contact a surface of the bore and thereby exert a force on the housing of the guidance module, and a retracted position.

Turner, William E. (Durham, CT); Perry, Carl A. (Middletown, CT); Wassell, Mark E. (Kingwood, TX); Barbely, Jason R. (Middletown, CT); Burgess, Daniel E. (Middletown, CT); Cobern, Martin E. (Cheshire, CT)

2010-07-27T23:59:59.000Z

356

Continuous Flow Differential Pressure Rotary Transport ...  

This patent-pending active material transport system design concept provides solutions to several process challenges associated with moving materials ...

357

Viscous Modified Cosmic Chaplygin Gas Cosmology  

E-Print Network (OSTI)

In this paper we construct modified cosmic Chaplygin gas which has viscosity. We use exponential function method to solve non-linear equation and obtain time-dependent dark energy density. Then discuss Hubble expansion parameter and scale factor and fix them by using observational data. We also investigate stability of this theory.

Behnam Pourhassan

2013-01-13T23:59:59.000Z

358

Rethinking rig count as a predictor of natural gas production ...  

U.S. Energy Information Administration (EIA)

Uranium fuel, nuclear reactors, ... What is the role of coal in the United States? ... Using historical data ...

359

Flow field survey in a transonic compressor rig .  

E-Print Network (OSTI)

??As the Navy prepares to transition to F-35C Joint Strike Fighter the need to understand "pop stalls – caused by steam leakage in catapult systems is… (more)

Rose, Christopher W.

2006-01-01T23:59:59.000Z

360

Rethinking rig count as a predictor of natural gas ...  

U.S. Energy Information Administration (EIA)

Includes hydropower, solar, wind, geothermal, biomass and ethanol. Nuclear & Uranium. Uranium fuel, nuclear reactors, generation, spent fuel. ... ...

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Basic Rigging Workbook Training and Qualifications Program Office  

E-Print Network (OSTI)

................................................................................................................... 42 Carbon Steel Pipe Size Chart. This instructor handbook incorporates the Subject Area's requirements, as well as information from the Department

Homes, Christopher C.

362

Rigs Drilling Gas Wells Are At - Energy Information Administration  

U.S. Energy Information Administration (EIA)

The increasing number of resulting gas well completions have been expanding production in major producing States, such as Texas. For the year 2000, ...

363

Pad drilling and rig mobility lead to more efficient drilling ...  

U.S. Energy Information Administration (EIA)

Biofuels: Ethanol & Biodiesel ... Pad drilling allows producers to target a significant area of underground resources while minimizing impact on the surface.

364

Pad drilling and rig mobility lead to more efficient drilling ...  

U.S. Energy Information Administration (EIA)

Tools; Glossary › All Reports ... weather; gasoline; capacity; nuclear; exports; forecast; View All Tags ...

365

7, 1324313269, 2007 EC fluxes of sea  

E-Print Network (OSTI)

for each residue. The conditioning tower has sixteen spray noz zles to control gas temperature. To give to handle several #12;PACKED TOWER SCRUBBER VISCOUS LIQUIDS/EMULSIONS AFTERBURNER SOLIDS ROTARY KILN they pass into a condi tioning tower mounted on top of the oxixizer. The conditioning tower is approximately

Paris-Sud XI, Université de

366

Word Pro - S5  

U.S. Energy Information Administration (EIA) Indexed Site

77 77 Table 5.1 Crude Oil and Natural Gas Drilling Activity Measurements (Number of Rigs) Rotary Rigs in Operation a Active Well Service Rig Count c By Site By Type Total b Onshore Offshore Crude Oil Natural Gas 1950 Average ........................ NA NA NA NA 2,154 NA 1955 Average ........................ NA NA NA NA 2,686 NA 1960 Average ........................ NA NA NA NA 1,748 NA 1965 Average ........................ NA NA NA NA 1,388 NA 1970 Average ........................ NA NA NA NA 1,028 NA 1975 Average ........................ 1,554 106 NA NA 1,660 2,486 1980 Average ........................ 2,678 231 NA NA 2,909 4,089 1985 Average ........................ 1,774 206 NA NA

367

Tidal Current Predictions Using Rotary Empirical Orthogonal Functions  

Science Conference Proceedings (OSTI)

In the conventional point tidal analysis approach, a set of tidal harmonic constituents is derived from each time series of currents. These sets of tidal constituents are then used to predict the tidal currents. For a large database of current ...

Betty Ng

1993-12-01T23:59:59.000Z

368

Statistical analysis of a silica gel rotary dehumidifier  

SciTech Connect

A regression analysis was conducted on experimental data obtained during the testing of a solid desiccant dehumidifier at the Solar Energy Research Institute (SERI has since been renamed the National Renewable Energy Laboratory). The data obtained was studied using statistical techniques to determine the regression equation for the temperature and humidity at the processed air outlet of the dehumidifier. These variables determine the cooling capacity and efficiency (Coefficient of Performance) of any desiccant cooling cycle. The analysis is used to determine the relative impact the input parameters have on the outlet temperature and humidity.

Kini, A.; Waugaman, D.G.; Kettleborough, C.F. (Texas A and M Univ., College Station (United States))

1993-01-01T23:59:59.000Z

369

Analysis and performance of radial flow rotary dessicant dehumidifiers  

SciTech Connect

A model is developed to predict the steady periodic performance of a radial flow desiccant wheel. The model is expressed in terms of the same dimensionless parameters that are commonly used in modeling of the conventional axial flow desiccant wheel. In addition a dimensionless geometrical ratio of the volume of the matrix to the volume of the wheel core is found to affect the performance of the wheel. A finite difference technique on staggered grid is used to discretize the governing dimensionless equations. The discretized equations are solved to predict the performance of the desiccant wheel at given values of operation parameters. A sensitivity study is carried out to investigate the effect of changing any of these parameters on the performance of the wheel. The performance of the radial flow desiccant wheel having the same values of the operation parameters.

Elsayed, M.M.; Chamkha, A.J. [Kuwait Univ., Safat (Kuwait). Mechanical and Industrial Engineering Dept.

1997-02-01T23:59:59.000Z

370

Maintenance cost studies of rotary wing commercial transport aircraft  

E-Print Network (OSTI)

Introduction: The vertical take-off and landing (VTOL) aircraft market has had substantial growth in the period of the last ten years when one considers the overall number of aircraft in use. The military fleet has continued ...

Ausrotas, Raymond A.

1974-01-01T23:59:59.000Z

371

The Comparison between Vertical Shaft Furnace and Rotary Kiln for ...  

Science Conference Proceedings (OSTI)

Therefore, calcination of coke used for aluminum reduction by vertical shaft furnace is more competitive based on the existing quality of the green petroleum  ...

372

Rotor Design and Process Optimization for Rotary Inert Dgeasser  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2012. Symposium, Advances in Metal Casting Technologies. Presentation Title, Rotor Design and ...

373

Pumped oil feed systems for rotary vacuum pumps  

Science Conference Proceedings (OSTI)

Pumped oil feed systems developed by the authors and their colleagues provide positive lubrication under all inlet pressure conditions

H. Wycliffe; B. D. Power

1981-01-01T23:59:59.000Z

374

Test of a rotary separator turbine with separated feed configuration  

DOE Green Energy (OSTI)

A description of the test system used during the Endurance Tests is presented. Results of the first series of performance tests (10/81 to 10/82), and of the Endurance Test, are briefly discussed in this section. The rationale for the RST power system is presented. Test system changes, and a summary of the test system shakedown are presented. The Upgrade Test series consists of three short (2-3 day) test periods. Test system operations, as well as immediate conclusions and system modifications, are presented. Results and conclusions are presented.

Not Available

1985-03-14T23:59:59.000Z

375

First-order Transition Magnetocaloric Materials in Rotary Magnetic ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Astronautics has designed, constructed, and tested several ... requires accurate modeling of the magnetic refrigerator, accurate layering of a ...

376

Integrating Coal Gasification into a Rotary Kiln Electric Furnace Plant  

Science Conference Proceedings (OSTI)

Coal gasification is a potential alternative to conventional coal or natural gas- fired power plants ... Fundamentals of Spark-Plasma Sintering: Net-Shaping and Size Effects ... Investigation on a Microwave High-Temperature Air Heat Exchanger.

377

Snubdrilling a new well in Venezuela  

Science Conference Proceedings (OSTI)

A new well was successfully drilled using a snubbing jack. The drill bit was rotated using a rotary table, downhole motors and combination of the two. Expected high-pressure zones prompted this use of ``snubdrilling.`` The primary objective was to drill a vertical well through underlying sands and gain information about formation pressures. This data would aid in the drilling of a relief well using a conventional drilling rig. The secondary objective was to relieve pressure by putting this new well on production. In addition to special high-pressure drilling jobs, there are other drilling applications where snubbing jacks are a feasible alternative to conventional rotary drilling rigs or coiled tubing units. Slimhole, underbalanced and flow drilling, and sidetracking of existing wells are excellent applications for snubdrilling. Advantages of snubdrilling vs. coiled tubing drilling, include ability to rotate drillstrings, use high-torque downhole motors, pump at high rates and pressures, apply significant overpull in case of stuck pipe, and run casing and liners without rigging down. Shortcomings of drilling with snubbing jacks compared to coiled tubing are the need to stop circulation while making new connections and inability to run continuous cable inside workstrings.

Aasen, J.

1995-12-01T23:59:59.000Z

378

Spreading of viscous fluids and granular materials on slopes  

E-Print Network (OSTI)

Volcano, at the border of Argentina and Chile, taken from aboard the International Space Station (National Aeronautics and Space Administration, 2010). Several channels of deposited lava extend from the summit, which is elevated 6,739m above sea level. how... of the duct and propulsion of the inner contents. The motion is fundamental to many systems in biology, including the digestive system, which can be studied through mathematical models. 1.2 Mathematical motivation All of the physical examples presented above...

Takagi, Daisuke

2010-11-16T23:59:59.000Z

379

Assessing Equivalent Viscous Damping Using Piping System test Results  

SciTech Connect

The specification of damping for nuclear piping systems subject to seismic-induced motions has been the subject of many studies and much controversy. Damping estimation based on test data can be influenced by numerous factors, consequently leading to considerable scatter in damping estimates in the literature. At present, nuclear industry recommendations and nuclear regulatory guidance are not consistent on the treatment of damping for analysis of nuclear piping systems. Therefore, there is still a need to develop a more complete and consistent technical basis for specification of appropriate damping values for use in design and analysis. This paper summarizes the results of recent damping studies conducted at Brookhaven National Laboratory.

Nie, J.; Morante, R.

2010-07-18T23:59:59.000Z

380

Solution to the Charney Problem of Viscous Symmetric Circulation  

Science Conference Proceedings (OSTI)

The classical problem of viscosity-driven, axially symmetric meridional circulation, partly solved only for the midlatitudes by Charney, is solved here analytically in the whole globe and for any value of viscosity coefficient ?. The solution ...

Ming Fang; Ka Kit Tung

1994-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Nonlinear lower hybrid oscillations in a cold viscous plasma  

SciTech Connect

An analytical description of nonlinear lower hybrid oscillations in a cold quasi-neutral plasma in the presence of viscosity is presented in one spatial dimension by using Lagrangian variables. By treating viscosity coefficients of the electron and ion fluids as inversely proportional to their respective densities, an exact solution is obtained. It is found that the damping rate of such oscillations is directly proportional to the effective viscosity coefficients of electron and ion fluids. A possible implication of such solutions is briefly outlined.

Maity, Chandan; Chakrabarti, Nikhil [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)

2011-12-15T23:59:59.000Z

382

Slow waves in fractures ?lled with viscous ?uid  

1 e x P1 2 z 1e kx P1 2 z eikxx, 15 1 1 B 1 e kx S1 2 z xe x 1 2 z eikx 16 insidethelayerand x 2 A 2e kx sign z 1 P2 2 eikx, 17 2 kB 2e x sign z 1 S2 2 eikxx 18 ...

383

Orientation dynamics of weakly Brownian particles in periodic viscous flows  

E-Print Network (OSTI)

Evolution equations for the orientation distribution of axisymmetric particles in periodic flows are derived in the regime of small but non-zero Brownian rotations. The equations are based on a multiple time scale approach that allows fast computation of the relaxation processes leading to statistical equilibrium. The approach has been applied to the calculation of the effective viscosity of a thin disk suspension in gravity waves.

Piero Olla

2005-07-12T23:59:59.000Z

384

Magnetic separation of micro-spheres from viscous biological fluids.  

SciTech Connect

A magnetically based detoxification system is being developed as a therapeutic tool for selective and rapid removal of biohazards, i.e. chemicals and radioactive substances, from human blood. One of the key components of this system is a portable magnetic separator capable of separating polymer-based magnetic nano/micro-spheres from arterial blood flow in an ex vivo unit. The magnetic separator consists of an array of alternating and parallel capillary tubing and magnetizable wires, which is exposed to an applied magnetic field created by two parallel permanent magnets such that the magnetic field is perpendicular to both the wires and the fluid flow. In this paper, the performance of this separator was evaluated via preliminary in vitro flow experiments using a separator unit consisting of single capillary glass tubing and two metal wires. Pure water, ethylene glycol-water solution (v:v = 39:61 and v:v = 49:51) and human whole blood were used as the fluids. The results showed that when the viscosity increased from 1.0 cp to 3.0 cp, the capture efficiency (CE) decreased from 90% to 56%. However, it is still feasible to obtain >90% CE in blood flow if the separator design is optimized to create higher magnetic gradients and magnetic fields in the separation area.

Chen, H.; Kaminski, M. D.; Xianqiao, L.; Caviness, P.; Torno, M.; Rosengart, A. J.; Dhar, P.; Chemical Engineering; Univ. of Chicago Pritzker School of Medicine; Illinois Inst. of Tech.

2007-02-21T23:59:59.000Z

385

DIFFUSION OF A CHEMICAL SPECIES THROUGH A VISCOUS BOUNDARY LAYER  

E-Print Network (OSTI)

2.3 Evaluation of a Coal Gasification Atmosphere. . -iv-a highly cor- rosive coal gasification mixture. It is shown2.3 Evaluation of a Coal Gasification Atmosphere The purpose

Keller, J.

2011-01-01T23:59:59.000Z

386

On the Effects of Viscous Damping on Equatorial Rossby Waves  

Science Conference Proceedings (OSTI)

This work studies the effects of viscosity on the gravest Rossby mode on an equatorial beta plane, using linear damping and cooling coefficients. The results show that the vertical wavelength increased for a given forcing phase speed and that the ...

C-P. Chang; H. Lim

1982-08-01T23:59:59.000Z

387

DIFFUSION OF A CHEMICAL SPECIES THROUGH A VISCOUS BOUNDARY LAYER  

E-Print Network (OSTI)

use an operating coal gasifier will be discussed. ofof the products of the gasifier with H S removed, then theconditions existing in coal gasifiers the con- centration

Keller, J.

2011-01-01T23:59:59.000Z

388

Treatment and Minimization of Aluminum and Light Metals Industry ...  

Science Conference Proceedings (OSTI)

... reverberatory and rotary aluminum furnaces, reverberatory and rotary lead furnaces, as well as rotary brass furnaces. Representative examples are presented ...

389

Application of PDC bits in the Kuparuk River Field, Alaska  

SciTech Connect

In soft to medium hard clays and shales, PDC bits have proven to be economically successful in the Kuparuk River Field, Alaska. Through the redesign and modification of PDC bits and rig equipment, the necessary operating parameters have been achieved and the use of PDC bits has become routine. These bits are typically run with a standpipe pressure of 4000 psi, pump rate of 400 to 450 gpm, and a rotary speed of 150 to 200 rpm. Using these high operating parameters, a savings of about $50,000 per PDC bit is being achieved when compared to roller cone bits.

Balkenbush, R.J.; Onisko, J.E.

1983-10-01T23:59:59.000Z

390

U.S. Crude Oil and Natural Gas Active Well Service Rigs in operation  

Gasoline and Diesel Fuel Update (EIA)

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1973 1,549 1,677 1,805 1,898 1,991 1,994 1,997 2,112 2,227 2,247 2,266 2,334 1974 2,401 2,436 2,470 2,513 2,555 2,525 2,494 2,483 2,473 2,488 2,503 2,543 1975 2,582 2,549 2,568 2,549 2,374 2,426 2,344 2,369 2,459 2,434 2,505 2,675 1976 2,612 2,490 2,521 2,597 2,575 2,607 2,606 2,656 2,652 2,639 2,601 2,660 1977 2,474 2,628 2,695 2,804 2,760 2,895 2,929 2,942 2,964 2,973 2,968 2,898 1978 2,810 2,906 2,899 2,997 2,996 2,987 3,006 3,089 3,073 3,078 2,958 3,063 1979 3,094 2,698 2,765 3,034 3,369 3,506 3,572 3,621 3,673 3,954 3,795 3,709 1980 3,855 3,923 4,010 3,871 4,032 4,112 4,092 4,155 4,277 4,290 4,281 4,172

391

Crude oil-directed weekly rig count surpassed 1,000 - Today in ...  

U.S. Energy Information Administration (EIA)

Solar › Energy in Brief ... Market Watch: Tropical Storm Lee combined with reduced holiday loads cut natural gas and electricity consumption over the weekend.

392

CURRENT PAPERS Stationary Rig Experiments on the Heat Extracting Power of Closed Thermosyphon Cooling Holes  

E-Print Network (OSTI)

portvan Page 8, penultmate lame, page 9, equatmn (25), and figure 16, m the of the eqwtlon:-quoted, the mdxes are incorrectly m-lttm, and the whole equatlcn s!uml.d rexd:-[C.ljg2;;$'835 (I- 0.0979 FP*4035) j z-------------------------------------------(o.4,5 fgs2 ' (1.05 FPJ- 1) Paga 15, equation (IO), ps hm been omitted from the right-hand side of the equatxon, and should mad:-Page 17, line 2, "them~ocyphon " should read "thermosyphon". Page 18, tie II, "caloulat~m " should head "calculatmns".

Dr. H. W. Hahnemann; Naticnal Ghs; Twwnz Est

1951-01-01T23:59:59.000Z

393

DOE-STD-1090-99; DOE Standard Hoisting and Rigging (Formerly...  

NLE Websites -- All DOE Office Websites (Extended Search)

the operator is not operating the forklift truck safely. 4. The operator is assigned to drive a different type of forklift truck. 5. A condition in the workplace changes in a...

394

Microsoft Word - 41888_SWPC_Adv Mat & Coating Test Rig_Factsheet...  

NLE Websites -- All DOE Office Websites (Extended Search)

steam generators, piping and ducting, fuel delivery skid, additional test sections, instrumentation and controls, and the exhaust systems for each test section. All...

395

The Rail Technology Unit The Application of the Roller Rigs to Railway  

E-Print Network (OSTI)

Jin a ; Ernie Pan b a Department of Engineering Mechanics, Shijiazhuang Railway Institute Mechanics, Shijiazhuang Railway Institute, Shijiazhuang 050043, China; b Department of Civil Engineering In recent years, piezoelectric and piezomagnetic materials have increasingly found applications in various

396

The semigroup of rigged annuli and the Teichmueller space of the annulus  

E-Print Network (OSTI)

Neretin and Segal independently defined a semigroup of annuli with boundary parametrizations, which is viewed as a complexification of the group of diffeomorphisms of the circle. By extending the parametrizations to quasisymmetries, we show that this semigroup is a quotient of the Teichmueller space of doubly-connected Riemann surfaces by a Z action. Furthermore, the semigroup can be given a complex structure in two distinct, natural ways. We show that these two complex structures are equivalent, and furthermore that multiplication is holomorphic. Finally, we show that the class of quasiconformally-extendible conformal maps of the disk to itself is a complex submanifold in which composition is holomorphic.

Radnell, David

2010-01-01T23:59:59.000Z

397

U.S. Crude Oil and Natural Gas Active Well Service Rigs in operation...  

Gasoline and Diesel Fuel Update (EIA)

Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1970's 2,008 2,490 2,486 2,601 2,828 2,989 3,399 1980's 4,089 4,849 4,249 3,733 4,659 4,716 3,037 3,059...

398

Wavelets for fault diagnosis of rotary machines: A review with applications  

Science Conference Proceedings (OSTI)

Over the last 20 years, particularly in last 10 years, great progress has been made in the theory and applications of wavelets and many publications have been seen in the field of fault diagnosis. This paper attempts to provide a review on recent applications ... Keywords: Classical wavelet transform, Multi-wavelets, Second generation wavelet transform, Wavelet design, Wavelet finite element method, Wavelet selection

Ruqiang Yan, Robert X. Gao, Xuefeng Chen

2014-03-01T23:59:59.000Z

399

Verification of BModes: Rotary Beam and Tower Modal Analysis Code; Preprint  

DOE Green Energy (OSTI)

This paper describes verification of BModes, a finite-element code developed to provide coupled modes for the blades and tower of a wind turbine. The blades, which may be rotating or non-rotating, and the towers, whether onshore or offshore, are modeled using specialized 15-dof beam finite elements. Both blade and tower models allow a tip attachment, which is assumed to be rigid body with six moments of inertia, and a mass centroid that may be offset from the blade or tower axis. Examples of tip attachments are aerodynamic brakes for blades and nacelle-rotor subassembly for towers. BModes modeling allows for tower supports including tension wires, floating platforms, and monopiles on elastic foundations. Coupled modes (implying coupling of flap, lag, axial, and torsional motions) are required for modeling major flexible components in a modal-based, aeroelastic code such as FAST1. These are also required for validation of turbine models using experimental data, modal-based fatigue analysis, controls design, and understanding aeroelastic-stability behavior of turbines. Verification studies began with uniform tower models, with and without tip inertia, and progressed to realistic towers. For the floating turbine, we accounted for the effects of hydrodynamic inertia, hydrostatic restoring, and mooring lines stiffness. For the monopole-supported tower, we accounted for distributed hydrodynamic mass on the submerged part of the tower and for distributed foundation stiffness. Finally, we verified a model of a blade carrying tip mass and rotating at different speeds (verifications of other blade models, rotating or non-rotating, have been reported in another paper.) Verifications were performed by comparing BModes-generated modes with analytical results, if available, or with MSC.ADAMS results. All results in general show excellent agreement.

Bir, G.

2010-04-01T23:59:59.000Z

400

A high-performance drive for the rotary coal breaker application  

Science Conference Proceedings (OSTI)

This paper considers recent advances made within the field of electric drives and how this new technology might be best applied within the mining industry. A case study is presented showing simulated results of the performance of the electric drives in a coal preparation plant. The various starting methodologies (resistance starting, fluid coupling, V/f = const, and vector control) are compared within this application. The merits of each method are then discussed with regard to the specific application and other more generic applications within the mining industry. Application of a rotor flux orientation control drive is substantiated, and its superior performance under start and stall conditions to that of the currently implemented system is confirmed by theoretical analysis and simulations. Experimental results for a scale model of the candidate system are presented, which agree with the main conclusions of this paper.

Mirzaeva, G.; Coates, C. [University of Newcastle, Callaghan, NSW (Australia)

2009-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Rotary bed reactor for chemical-looping combustion with carbon capture  

E-Print Network (OSTI)

Chemical-looping combustion (CLC) is a novel and promising technology for power generation with inherent CO2 capture. Currently almost all the research has been focused on developing CLC based inter-connected fluidized bed ...

Zhao, Zhenlong

2012-01-01T23:59:59.000Z

402

Intermediate coating layer for high temperature rubbing seals for rotary regenerators  

Science Conference Proceedings (OSTI)

A metallic regenerator seal is provided having multi-layer coating comprising a NiCrAlY bond layer, a yttria stabilized zirconia (YSZ) intermediate layer, and a ceramic high temperature solid lubricant surface layer comprising zinc oxide, calcium fluoride, and tin oxide. Because of the YSZ intermediate layer, the coating is thermodynamically stable and resists swelling at high temperatures. 2 figs.

Schienle, J.L.; Strangman, T.E.

1995-03-14T23:59:59.000Z

403

Intermediate coating layer for high temperature rubbing seals for rotary regenerators  

DOE Patents (OSTI)

A metallic regenerator seal is provided having multi-layer coating comprising a NiCrAlY bond layer, a yttria stabilized zirconia (YSZ) intermediate layer, and a ceramic high temperature solid lubricant surface layer comprising zinc oxide, calcium fluoride, and tin oxide. Because of the YSZ intermediate layer, the coating is thermodynamically stable and resists swelling at high temperatures.

Schienle, James L. (Phoenix, AZ); Strangman, Thomas E. (Phoenix, AZ)

1995-01-01T23:59:59.000Z

404

A Pilot-plant Scale Test of Coal-based Rotary Kiln Direct Reduction ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , 5th International Symposium on High Temperature Metallurgical Processing.

405

Simulation model of a rotary expander of a small cogeneration unit  

Science Conference Proceedings (OSTI)

Today, steam engines are used for special purposes only, for example to reduce steam pressure in pressure reduction stations, where they replace the traditional and inefficient throttling process. Throttling is the most used way to control the pressure ... Keywords: cogeneration, modeling, simulation, steam engine

Evžen Thöndel

2007-10-01T23:59:59.000Z

406

Simulation of Combustion and Thermal-flow Inside a Petroleum Coke Rotary Calcining Kiln.  

E-Print Network (OSTI)

??Calcined coke is the best material for making carbon anodes for smelting of alumina to aluminum. Calcining is an energy intensive industry and a significant… (more)

Zhang, Zexuan

2007-01-01T23:59:59.000Z

407

Deep Drilling Basic Research: Volume 4 - System Description. Final Report, November 1988--August 1990  

DOE Green Energy (OSTI)

The first section of this Volume will discuss the ''Conventional Drilling System''. Today's complex arrangement of numerous interacting systems has slowly evolved from the very simple cable tool rigs used in the late 1800s. Improvements to the conventional drilling rig have varied in size and impact over the years, but the majority of them have been evolutionary modifications. Each individual change or improvement of this type does not have significant impact on drilling efficiency and economics. However, the change is almost certain to succeed, and over time--as the number of evolutionary changes to the system begin to add up--improvements in efficiency and economics can be seen. Some modifications, defined and described in this Volume as Advanced Modifications, have more than just an evolutionary effect on the conventional drilling system. Although the distinction is subtle, there are several examples of incorporated advancements that have had significantly more impact on drilling procedures than would a truly evolutionary improvement. An example of an advanced modification occurred in the late 1970s with the introduction of Polycrystalline Diamond Compact (PDC) drill bits. PDC bits resulted in a fundamental advancement in drilling procedures that could not have been accomplished by an evolutionary improvement in materials metallurgy, for example. The last drilling techniques discussed in this Volume are the ''Novel Drilling Systems''. The extent to which some of these systems have been developed varies from actually being tested in the field, to being no more than a theoretical concept. However, they all have one thing in common--their methods of rock destruction are fundamentally different from conventional drilling techniques. When a novel drilling system is introduced, it is a revolutionary modification of accepted drilling procedures and will completely replace current techniques. The most prominent example of a revolutionary modification in recent history was the complete displacement of cable tool rigs by rotary drilling rigs in the late 1920s.

Anderson, E.E.; Maurer, W.C.; Hood, M.; Cooper, G.; Cook, N.

1990-06-01T23:59:59.000Z

408

Identifiering av synkronmaskinsmodell genom SSFR-test.  

E-Print Network (OSTI)

?? At the Division of Electricity at Uppsala University there is an experimental rig for hydroelectric generators. The experimental rig’s vital part is a 12-pole… (more)

Malmberg, Johan

2011-01-01T23:59:59.000Z

409

EXPERIMENTAL EVALUATION OF THE COMBUSTION HAZARD TO THE EXPERIMENTAL GAS- COOLED REACTOR-PRELIMINARY BURNING RIG EXPERIMENTS  

SciTech Connect

>An assembly was constructed which simulated the moderator coolant annulus in the Experimental Gas-Cooled Reactor. This assembly was preheated to various temperatures and air was passed through the coolant annulus. Under certain conditions it was demonstrated that self-sustained combustion of the graphite could occur. Rates of temperature rise were generally less than 1 deg C/ min until the graphite temperature exceeded 700 deg C and then rise rates became very high. In these cxperimcnts, the assembly was not operated in such a manner as to give ignition temperatures eharaeteristic of the EGCR. These tests were designed only to investigate the effects of changing such parameters as the rate of coolant flow, air humidity, prior oxidation on the graphite, and air inlet temperature. A later series of experiments to more closely duplicate the EGCR operating conditions was completed and will be reported in a second report, HW- 71182. (auth)

Dahl, R.E.

1961-11-01T23:59:59.000Z

410

U.S. Department of Energy Office of Legacy Management National Environmental Policy Act Environmental Checklist  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2-10 2-10 U.S. Department of Energy Office of Legacy Management National Environmental Policy Act Environmental Checklist Project/Activity: Install wells and boreholes at the Old Rifle, CO, Processing Site A. Brief Project/Activity Description The Environmental Remediation Sciences Program (ERSP) proposes to install 36 wells and 5 boreholes on the Old Rifle, CO, Processing Site. A combination of 13 injection wells, 18 monitoring wells, 5 multi-chambered wells, and 5 boreholes would be installed using a sonic rotary drill rig. Five of the wells would be used for U.S. Department of Energy (DOE) Office of Legacy Management (LM) groundwater monitoring purposes and the remainder (31 wells and 5 boreholes) would be installed in a single gallery (Super 8) to be used for research and monitoring

411

Natural Gas Weekly Update  

Gasoline and Diesel Fuel Update (EIA)

1, 2011 at 2:00 P.M. 1, 2011 at 2:00 P.M. Next Release: Thursday, August 18, 2011 Overview Prices Storage Other Market Trends Overview (For the Week Ending Wednesday, August 10, 2011) Natural gas prices fell across the board this week, likely in response to cooling temperatures as well as weak economic news. The Henry Hub spot price fell 17 cents from $4.26 per million Btu (MMBtu) last Wednesday, August 3, to $4.09 per MMBtu yesterday, August 10. At the New York Mercantile Exchange, the price of the near-month contract (September 2011) fell by $0.087 per MMBtu, from $4.090 last Wednesday to $4.003 yesterday. Working natural gas in storage was 2,783 Bcf as of Friday, August 5, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

412

Natural Gas Weekly Update, Printer-Friendly Version  

Gasoline and Diesel Fuel Update (EIA)

8, 2011 at 2:00 P.M. 8, 2011 at 2:00 P.M. Next Release: Thursday, August 4, 2011 Overview Prices Storage Other Market Trends Overview (For the Week Ending Wednesday, July 27, 2011) As last weekÂ’s Eastern heat wave subsided, natural gas prices declined at market locations across the lower 48 States. The spot price at the Henry Hub decreased 18 cents from $4.64 per million Btu (MMBtu) last Wednesday, July 20, to $4.46 per MMBtu yesterday, July 27. At the New York Mercantile Exchange, the price of the near-month futures contract (August 2011) decreased from $4.500 per MMBtu to $4.370 per MMBtu. Working natural gas in storage rose to 2,714 billion cubic feet (Bcf) as of Friday, July 22, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

413

CX-002692: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

692: Categorical Exclusion Determination 692: Categorical Exclusion Determination CX-002692: Categorical Exclusion Determination Drill One Exploratory Hole On Lease Tract C-WM-17 by Golden Eagle Uranium CX(s) Applied: B3.1, B1.3 Date: 06/02/2010 Location(s): Montrose County, Colorado Office(s): Legacy Management Golden Eagle Uranium (LLC) proposes to drill one 5-inch-diameter exploratory borehole on U.S. Department of Energy (DOE) lease tract C-WM-17, located in western Montrose County, Colorado. The drilling would be completed by a truck-mounted rotary drill rig capable of boring to 1,000 feet (ft) below ground surface (bgs). The proposed location of the drill hole is in a previously disturbed area and is adjacent to a two-track dirt road. Access to the site would be on existing dirt roads. DOCUMENT(S) AVAILABLE FOR DOWNLOAD

414

CX-001631: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1631: Categorical Exclusion Determination 1631: Categorical Exclusion Determination CX-001631: Categorical Exclusion Determination Install Wells and Boreholes at the Old Rifle Colorado Processing Site CX(s) Applied: B3.1 Date: 04/15/2010 Location(s): Old Rifle, Colorado Office(s): Legacy Management The Environmental Remediation Sciences Program (ERSP) proposes to install 36 wells and 5 boreholes on the Old Rifle, Colorado, Processing Site. A combination of 13 injection wells, 18 monitoring wells, 5 multi-chambered wells, and 5 boreholes would be installed using a sonic rotary drill rig. Five of the wells would be used for U.S. Department of Energy (DOE) Office of Legacy Management (LM) groundwater monitoring purposes and the remainder (31 wells and 5 boreholes) would be installed in a single gallery (Super 8)

415

Natural Gas Weekly Update, Printer-Friendly Version  

Gasoline and Diesel Fuel Update (EIA)

2, 2011 at 2:00 P.M. 2, 2011 at 2:00 P.M. Next Release: Thursday, September 29, 2011 Overview Prices Storage Other Market Trends Overview (For the Week Ending Wednesday, September 21, 2011) Natural gas spot prices declined at most market locations across the United States, as moderate temperatures led to declines in demand. Prices at the Henry Hub fell from $4.01 per MMBtu last Wednesday, September 14, to $3.78 per MMBtu yesterday. At the New York Mercantile Exchange, the price of the near-month futures contract (October 2011) dropped from $4.039 per MMBtu last Wednesday to $3.73 per MMBtu yesterday. Working natural gas in storage rose to 3,201 billion cubic feet (Bcf) as of Friday, September 16, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

416

CX-002757: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

57: Categorical Exclusion Determination 57: Categorical Exclusion Determination CX-002757: Categorical Exclusion Determination Drill One Exploratory Borehole on Lease Tract 15A by Golden Eagle Uranium CX(s) Applied: B3.1, B1.3 Date: 06/15/2010 Location(s): San Miguel County, Colorado Office(s): Legacy Management Golden Eagle Uranium LLC proposes to drill one 5-inch diameter exploratory borehole on United States Department of Energy lease tract C-SR-15A, located in western San Miguel County, Colorado. The drilling would be completed by a truck-mounted rotary drill rig capable of boring to 1,000 feet below ground surface. The drilling would be completed dry to an estimated depth of 600 feet below ground surface. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-002757.pdf More Documents & Publications CX-000283: Categorical Exclusion Determination

417

Natural Gas Weekly Update, Printer-Friendly Version  

Gasoline and Diesel Fuel Update (EIA)

1, 2011 at 2:00 P.M. 1, 2011 at 2:00 P.M. Next Release: Thursday, July 28, 2011 Overview Prices Storage Other Market Trends Overview (For the Week Ending Wednesday, July 20, 2011) Responding to extremely hot weather this week, natural gas prices moved up at market locations across the lower 48 States. The spot price at the Henry Hub increased 21 cents from $4.43 per million Btu (MMBtu) last Wednesday, July 13, to $4.64 per MMBtu yesterday, July 20. At the New York Mercantile Exchange, the price of the near-month futures contract (August 2011) increased from $4.403 per MMBtu to $4.500 per MMBtu. Working natural gas in storage rose to 2,671 billion cubic feet (Bcf) as of Friday, July 15, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

418

U.S. Department of Energy Office of Legacy Management National Envkonmental Policy Act Environmental Checklist  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- - 19-10 U.S. Department of Energy Office of Legacy Management National Envkonmental Policy Act Environmental Checklist Project/Activity: Drill one exploratory hole on L.T. c-WM-17 by Golden Eagle Uranium A. Brief Project! Activity Descl'iptioll Golden Eagle Uranium (LLC) proposes to drill one 5-inch-diameter exploratory borehole on U.S. Department of Energy (DOE) lease tract C-WM-17, located in western Montrose County, Colorado. The drilling would be completed by a truck-mounted rotary drill rig capable of boring to 1,000 feet (ft) below ground surface (bgs). The proposed location of the drill hole is in a previously disturbed area and is adjacent to a two-track dirt road. Access to the site would be on existing dirt roads. The drilling would be completed dry to an estimated depth of 550 ft bgs. Once data are collected, the hole

419

Natural Gas Weekly Update, Printer-Friendly Version  

Gasoline and Diesel Fuel Update (EIA)

1, 2011 at 2:00 P.M. 1, 2011 at 2:00 P.M. Next Release: Thursday, August 18, 2011 Overview Prices Storage Other Market Trends Overview (For the Week Ending Wednesday, August 10, 2011) Natural gas prices fell across the board this week, likely in response to cooling temperatures as well as weak economic news. The Henry Hub spot price fell 17 cents from $4.26 per million Btu (MMBtu) last Wednesday, August 3, to $4.09 per MMBtu yesterday, August 10. At the New York Mercantile Exchange, the price of the near-month contract (September 2011) fell by $0.087 per MMBtu, from $4.090 last Wednesday to $4.003 yesterday. Working natural gas in storage was 2,783 Bcf as of Friday, August 5, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

420

Program or Field Office:  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Install six groundwater monitoring wells and perform general site actions at the Bluewater Install six groundwater monitoring wells and perform general site actions at the Bluewater Uranium Mill Tailings Radiation Control Act site near Grants, NM. LM 5-12 Location: Near Grants, NM Proposed Action or Project Description: DOE proposes to install six groundwater monitoring wells, perform other actions related to use of existing monitoring wells, obtain a Light Detection and Ranging Survey (LiDAR), install a small weather station, and apply pesticide to control noxious weeds at the Bluewater Site. The wells would be drilled by a truck-mounted rotary drill rig. The B SIB-inch boreholes would extend to depths of 120 to 350 feet (ft) below ground surface. Mud pits to contain drilling fluids and drill cuttings would be required for some of the wells. The mud pits, where required, would be approximately 6 ft by 20 ft in

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

CX-000283: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

283: Categorical Exclusion Determination 283: Categorical Exclusion Determination CX-000283: Categorical Exclusion Determination Cotter Corp Exploratory Drill Hole on Tract C-SR-13A CX(s) Applied: B3.1, B1.3 Date: 11/09/2009 Location(s): San Miguel County, Colorado Office(s): Legacy Management Cotter Corporation proposes to conduct exploratory drilling on Lease Tract C-SR-13A, located in San Miguel County, Colorado. The exploratory drilling would consist of boring one 5-6-inch diameter hole adjacent to an existing road to an estimated depth of 750 feet. A truck-mounted air rotary drill rig would be used for this action. In addition, a 10 x 10 x 3 feet deep excavated area would be used to contain the drill cuttings. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-000283.pdf More Documents & Publications

422

Natural Gas Weekly Update  

Gasoline and Diesel Fuel Update (EIA)

3, 2011 at 2:00 P.M. 3, 2011 at 2:00 P.M. Next Release: Thursday, June 30, 2011 Overview Prices Storage Other Market Trends Natural Gas Transportation Update Overview (For the Week Ending Wednesday, June 22, 2011) Natural gas prices fell slightly at most market locations from Wednesday, June 15 to Wednesday, June 22. The Henry Hub price fell 10 cents from $4.52 per million Btu (MMBtu) last Wednesday to $4.42 per MMBtu yesterday. At the New York Mercantile Exchange, the price of the July 2011 near-month futures contract fell by 26 cents, or about 6 percent, from $4.58 last Wednesday to $4.32 yesterday. Working natural gas in storage rose to 2,354 this week, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

423

Natural Gas Weekly Update  

Gasoline and Diesel Fuel Update (EIA)

2, 2011 at 2:00 P.M. 2, 2011 at 2:00 P.M. Next Release: Thursday, September 29, 2011 Overview Prices Storage Other Market Trends Overview (For the Week Ending Wednesday, September 21, 2011) Natural gas spot prices declined at most market locations across the United States, as moderate temperatures led to declines in demand. Prices at the Henry Hub fell from $4.01 per MMBtu last Wednesday, September 14, to $3.78 per MMBtu yesterday. At the New York Mercantile Exchange, the price of the near-month futures contract (October 2011) dropped from $4.039 per MMBtu last Wednesday to $3.73 per MMBtu yesterday. Working natural gas in storage rose to 3,201 billion cubic feet (Bcf) as of Friday, September 16, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

424

Slim Holes At Alvord Hot Springs Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

Combs, Et Al., 1999) Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Slim Holes At Alvord Hot Springs Area (Combs, Et Al., 1999) Exploration Activity Details Location Alvord Hot Springs Area Exploration Technique Slim Holes Activity Date Usefulness not indicated DOE-funding Unknown Notes Anadarko Petroleum Corporation drilled two slimhole discoveries in the 1980s, one at Salt Wells, NV, and the other at Pueblo Valley, OR. Both of these slimholes were hot enough to discharge unassisted and were successfully flow tested. A slimhole at Pueblo Valley, in south-east Oregon was planned and permitted as a test well to evaluate an interval of fractured basalt which had been discovered while drilling an earlier thermal-gradient hole. Using a UDR1500 rig, the hole was rotary-drilled to

425

Thermal spallation drilling  

DOE Green Energy (OSTI)

Thermal spallation drilling is an underdeveloped process with great potential for reducing the costs of drilling holes and mining shafts and tunnels in most very hard rocks. Industry has used this process to drill blast holes for emplacing explosives and to quarry granite. Some theoretical work has been performed, and many signs point to a great future for this process. The Los Alamos National Laboratory has studied the theory of the spallation process and is conducting experiments to prove out the system and to adapt it for use with a conventional rotary rig. This report describes work that has been accomplished at the Laboratory on the development of thermal spallation drilling and some work that is projected for the future on the system. 3 references, 3 figures.

Williams, R.E.

1985-01-01T23:59:59.000Z

426

Application of polycrystalline diamond compact bits in the Kuparuk River Field, Alaska  

SciTech Connect

In soft to medium-hard clays and shales, polycrystalline diamond compact (PDC) bits have proved economically successful in the Kuparuk River field, AK. Through the redesign and modification of PDC bits and rig equipment, the necessary operating parameters have been achieved, and the use of PDC bits has become routine. These bits are typically run with a bit weight of 30,000 to 40,000 lbf (133 to 178 kN), a standpipe pressure of 4,000 psi (27 MPa), a pump rate of 400 to 450 gal/min (1.5 to 1.7 m/sup 3//min), and a rotary speed of 150 to 200 rev/min. Use of these high operating parameters saves about $50,000 per PDC bit when compared with roller-cone bits.

Balkenbush, R.J.; Onisko, J.E.

1985-07-01T23:59:59.000Z

427

Slimhole Drilling, Logging, and Completion Technology - An Update  

DOE Green Energy (OSTI)

Using slim holes (diameter < 15 cm) for geothermal exploration and small-scale power production can produce significant cost savings compared to conventional rotary-drilling methods. In addition, data obtained from slim holes can be used to lower the risks and costs associated with the drilling and completion of large-diameter geothermal wells. As a prime contractor to the U.S. Department of Energy (DOE), Sandia National Laboratories has worked with industry since 1992 to develop and promote drilling, testing, and logging technology for slim holes. This paper describes the current status of work done both in-house and contracted to industry. It focuses on drilling technology, case histories of slimhole drilling projects, data collection and rig instrumentation, and high-temperature logging tools.

FINGER,JOHN T.; JACOBSON,RONALD D.

1999-10-07T23:59:59.000Z

428

Natural Gas Weekly Update  

Gasoline and Diesel Fuel Update (EIA)

1, 2011 at 2:00 P.M. 1, 2011 at 2:00 P.M. Next Release: Thursday, July 28, 2011 Overview Prices Storage Other Market Trends Overview (For the Week Ending Wednesday, July 20, 2011) Responding to extremely hot weather this week, natural gas prices moved up at market locations across the lower 48 States. The spot price at the Henry Hub increased 21 cents from $4.43 per million Btu (MMBtu) last Wednesday, July 13, to $4.64 per MMBtu yesterday, July 20. At the New York Mercantile Exchange, the price of the near-month futures contract (August 2011) increased from $4.403 per MMBtu to $4.500 per MMBtu. Working natural gas in storage rose to 2,671 billion cubic feet (Bcf) as of Friday, July 15, according to EIAÂ’s Weekly Natural Gas Storage Report (WNGSR). The natural gas rotary rig count, as reported by Baker Hughes

429

Office of Legacy Management Categorical Exclusion Determination Form  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Install two groundwater monitoring wells at the Bluewater Uranium Mill Tailings Radiation Install two groundwater monitoring wells at the Bluewater Uranium Mill Tailings Radiation Control Act site near Grants, New Mexico. LM # 10-12 Location : Near Grants, New Mexico Proposed Action or Project Description: DO E proposes to install two groundwater monitoring wells- 20(M) and 11 (SG)- on the Bluewater disposal site using a truck-mounted rotary drill rig. The boreholes would extend to depths of 140 to 280 feet below ground surface and would be completed with a polyvinyl chloride casing that has an outside diameter of 4.5 inches . Water and bentonite would be used for the drilling fluid ; if the drilling company requires additives , DOE would require the use of green products . Drill cuttings , which would consist of ground-up native rock with bentonite

430

Derivation of the Viscous Moore-Greitzer Equation for Aeroengine Flow  

E-Print Network (OSTI)

to the length scale of the blade pitch and time scale of a?) rep- resented by the blade pitch or the length of a bladethe scale determined by the blade pitch and cross-sectional

Birnir, Bjorn; Hou, Songming; Wellander, Niklas

2007-01-01T23:59:59.000Z

431

Passive Viscous Haptic Textures Gianni Campion Andrew H. C. Gosline Vincent Hayward  

E-Print Network (OSTI)

brakes e-mail: champ@cim.mcgill.ca e-mail:andrewg@cim.mcgill.ca e-mail:hayward@cim.mcgill.ca (ECB), which

Hayward, Vincent

432

Molecular motions in a viscous organic liquid: ferrocene in cold butyl phthalate  

SciTech Connect

The two main purposes of this work were to learn (a) if rotational diffusion can be seen along with translational, and (b) is (x(T)/sup 2/) unusual as the sample is heated from a glass to a liquid. Our observations show that (a) rotational molecular diffusion is not likely ever to be observed by quadrupole relaxation and (b) that there is indeed a fast increase in (x/sup 2/) above T/sub g/. This increase is correlated with a rapid and linear increase of the number of ''soft modes'' for the liquid above the glass transition temperature.

Ruby, S.L.; Zabransky, B.J.; Flinn, P.A.

1976-01-01T23:59:59.000Z

433

Development of turbo?viscous pump with ceramic rotor assembly and oil?free driving unit  

Science Conference Proceedings (OSTI)

In order to establish a dynamic pumping system for fusion reactors and other advanced vacuum devices

Y. Murakami; T. Abe; H. Ohsawa; S. Hata

1991-01-01T23:59:59.000Z

434

Formation of capillary structures with highly viscous fluids in plane microchannels  

E-Print Network (OSTI)

as enhanced oil recovery,1 biodiesel production,2 and crude oil processing.3 Thick materials, such as glycerol time of thread structures in the plane channel allows us to produce various degrees of fold coalescence, oils, concentrated emulsions, or mucus, are common in nature and industrial processes. In general

Cubaud, Thomas

435

Simulation of thin elastic solids in the incompressible viscous flow using implicit interface representation  

E-Print Network (OSTI)

This thesis provides a numerical algorithm to solve fluid-structure interaction problems in the Cartesian grid. Unlike the typical Immersed Interfaced Method (IIM), we define thin non-stretchable solid interface with the ...

Kim, Jae Hyung, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

436

Hydrodynamic causes and effects of air bubbles rising in very viscous media  

E-Print Network (OSTI)

Detailed understanding of two-phase gas liquid flows is imperative for developing efficient multi-phase reactors through precise control of mixing and reaction kinetics. The bubble column is a good apparatus for elementary studies of such flows. In the current study experiments are conducted to assess the effect of liquid viscosity on flow dynamics inside a bubble column. Corn oil and water are used as the continuous media, and air was the dispersed media. The objective of this effort is to use the results for a qualitative validation of the numerical simulations.

Ravinuthala, Sharad Chand

2013-01-01T23:59:59.000Z

437

Wettability and Oil Recovery by Imbibition and Viscous Displacement from Fractured and Heterogeneous Carbonates  

E-Print Network (OSTI)

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. About one-half of U.S. oil reserves are held in carbonate formations. The remaining oil in carbonate reservoirs is regarded as the major domestic target for improved oil recovery. Carbonate reservoirs are often fractured and have great complexity even at the

Norman R. Morrow; Co-principle Investigator; Jill Buckley; Co-principle Investigator

2006-01-01T23:59:59.000Z

438

Numerical Simulation of 3D Bubbles Rising in Viscous Liquids using a Front Tracking Method  

E-Print Network (OSTI)

Hua a , Jan F. Stene b and Ping Lin b a Institute of High Performance Computing, 1 Science Park Road of High Performance Computing 1 Science Park Road, #01-01 The Capricorn Singapore 117528 Email address. Stene b and Ping Lin b a Institute of High Performance Computing, 1 Science Park Road, #01

Lin, Ping

439

Applicability of fan spray nozzles to stripping insoluble gases from viscous liquids  

SciTech Connect

Fan spray nozzle stripping appears to be a practical technique for separating dilute volatile solutes from nonvolatile solvents. In particular this technique can be used to strip molecular tritium and tritium fluoride at extremely small concentration (in the parts per million range) from molten salts used as blanket materials in a fusion reactor. Under adjusted operating conditions of the fan spray as it leaves the nozzle, a high percentage of the theoretically maximum achievable stripping would take place from the expanding sheet of the fan spray as it leaves the nozzle and before it breaks up. Although the only available experimental data are for aqueous solutions, a new theoretical analysis of the fan spray sheet demonstrates the applicability of this technique to nonaqueous liquids. The equation derived from this analysis relates the theoretically achievable mass transfer efficiency to the properties of the liquid flowing through the fan spray nozzle and to the operating conditions of the nozzle. Any fluid with viscosity higher than or equal to that of water would be expected to follow this equation as long as a fan-shaped sheet is formed under the operating conditions of the nozzle.

Tseng, H.H.; Johnson, E.F.

1983-08-01T23:59:59.000Z

440

On the Properties of the Free Double Kelvin Wave in a Viscous and Diffusive Fluid  

Science Conference Proceedings (OSTI)

The modifications to the structure and propagation characteristics of the double Kelvin wave due to various parameterizations of dissipative effects; namely, a lateral eddy viscosity and diffusion with coefficients AM, AH, and Rayleigh friction ...

Roxana C. Wajsowicz

1992-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscous rotary rig" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Potential for non-thermal cost-effective chemical augmented waterflood for producing viscous oils.  

E-Print Network (OSTI)

??Chemical enhanced oil recovery has regained its attention because of high oil price and the depletion of conventional oil reservoirs. This process is more complex… (more)

Xu, Haomin

2012-01-01T23:59:59.000Z

442

On Computing Viscous Forces in Map Coordinates with a Variable Scale  

Science Conference Proceedings (OSTI)

Equations are first derived in shape-preserving coordinates for the spatial derivatives of the unit vectors, the gradient and Laplacian of a scalar, the divergence and vorticity of a vector, the advective acceleration in the equations of motion, ...

Maurice Danard

1989-12-01T23:59:59.000Z

443

On Well-Posedness of the Viscous–Plastic Sea Ice Model  

Science Conference Proceedings (OSTI)

This study examines the well-posedness of the initial-value problems that arise in common models of sea ice. The model equations describe the balance of linear momentum combined with simplified thermodynamics represented by two continuity ...

Oksana Guba; Jens Lorenz; Deborah Sulsky

2013-10-01T23:59:59.000Z

444

Coating flow of viscous Newtonian liquids on a rotating vertical disk Nilesh H. Parmar,1  

E-Print Network (OSTI)

are advantageous for packing used as a gas­liquid contactor for separation units. To determine the internal.5 34.4 45.8 (1) Centrifugal Pump (2) Filter (3) LiquidFlowmeter (4) PackedColumn (5) U-tube filled in the same range as for the other structured packings, so the application for a gas­liquid contactor

Hinch, John

445

Microsoft Word - S05827_WCR_Final.doc  

Office of Legacy Management (LM)

MV-4 Data MV-4 Data This page intentionally left blank U.S. Department of Energy Well Completion Report for CAU 443 CNTA December 2009 Doc. No. S05827 Page B-1 Table B-1. MV-4 Chronology Date Time Depth (ft bgs) Activity 04/16/09 through 04/22/09 NA NA Mobilization to CNTA and rig-up to drill 04/22/09 15:45 0 Rig inspection and drill pad walk through inspection, continue with preparations for drilling. 04/22/09 21:50 0 Begin drilling 31-inch diameter conductor casing borehole 04/23/09 10:10 100 Advanced 31-inch borehole to completion depth 04/24/09 00:15 100 Completed tripping out of hole, setting, and cementing 24-inch diameter CS surface casing with 210 ft 3 cement. 04/24/09 13:00 100 Begin drilling 12.25-inch borehole using conventional mud rotary method, switch to flooded reverse circulation method at

446

Microsoft Word - S05827_WCR_Final.doc  

Office of Legacy Management (LM)

MV-5 Data MV-5 Data This page intentionally left blank U.S. Department of Energy Well Completion Report for CAU 443 CNTA December 2009 Doc. No. S05827 Page C-1 Table C-1. MV-5 Chronology Date Time Depth (ft bgs) Activity 05/09/09 through 05/10/09 NA NA Move rig and equipment from MV-4 pad to MV-5 pad and prepare to drill MV-5. 05/10/09 12:10 0 Rig inspection and drill pad walk through inspection, continue with preparations for drilling. 05/10/09 14:00 0 Begin drilling 31-inch diameter conductor casing borehole. 05/11/09 01:00 100 Advanced 31-inch borehole to completion depth. 05/11/09 12:00 100 Completed tripping out of hole, setting, and cementing 24-inch diameter CS surface casing with 210 ft 3 cement. 05/11/09 19:10 100 Begin drilling 12.25-inch borehole using conventional mud rotary method, switch to flooded reverse circulation method at

447

Design of a novel rotary compact power pack for the series hybrid electric vehicle. Design and simulation of a compact power pack consisting of a novel rotary engine and outer rotor induction machine for the series hybrid electric vehicle powertrain.  

E-Print Network (OSTI)

??Hybrid electric vehicles significantly reduce exhaust emissions and increase fuel economy. Power packs are the most fundamental components in a series powertrain configuration of a… (more)

Amirian, Hossein

2010-01-01T23:59:59.000Z

448

Analysis of hydraulic power transduction in regenerative rotary shock absorbers as function of working fluid kinematic viscosity  

E-Print Network (OSTI)

This investigation seeks to investigate the relationship of kinematic fluid viscosity to the effective power transduction seen by a hydraulic motor. Applications of this research specifically relate to energy recovery from ...

Avadhany, Shakeel N

2009-01-01T23:59:59.000Z

449

Model of rotary-actuated flexible beam with notch filter vibration suppression controller and torque feedforward load compensation controller  

Science Conference Proceedings (OSTI)

This paper describes ORNL`s development of an environment for the simulation of robotic manipulators. Simulation includes the modeling of kinematics, dynamics, sensors, actuators, control systems, operators, and environments. Models will be used for manipulator design, proposal evaluation, control system design and analysis, graphical preview of proposed motions, safety system development, and training. Of particular interest is the development of models for robotic manipulators having at least one flexible link. As a first application, models have been developed for the Pacific Northwest Laboratory`s Flexible Beam Test Bed (PNL FBTB), which is a 1-Degree-of-Freedom, flexible arm with a hydraulic base actuator. ORNL transferred control algorithms developed for the PNL FBTB to controlling IGRIP models. A robust notch filter is running in IGRIP controlling a full dynamics model of the PNL test bed. Model results provide a reasonable match to the experimental results (quantitative results are being determined) and can run on ORNL`s Onyx machine in approximately realtime. The flexible beam is modeled as six rigid sections with torsional springs between each segment. The spring constants were adjusted to match the physical response of the flexible beam model to the experimental results. The controller is able to improve performance on the model similar to the improvement seen on the experimental system. Some differences are apparent, most notably because the IGRIP model presently uses a different trajectory planner than the one used by ORNL on the PNL test bed. In the future, the trajectory planner will be modified so that the experiments and models are the same. The successful completion of this work provides the ability to link C code with IGRIP, thus allowing controllers to be developed, tested, and tuned in simulation and then ported directly to hardware systems using the C language.

Bills, K.C.; Kress, R.L.; Kwon, D.S. [Oak Ridge National Lab., TN (United States); Baker, C.P. [Battelle, Richland, WA (United States). Dept. of Automation and Measurement Sciences

1994-12-31T23:59:59.000Z

450

An RTD study for the flow of lignite particles through a pilot rotary dryer. Part 2: Flighted drum case  

SciTech Connect

In Part 2 of this work a flighted pilot rotating cylindrical drum, intended to be used as either a dryer or calciner (kiln), has been used to investigate the flow, through it, of pulverized moist lignite. Tracer pulse input-response experiments have been performed. Residence Time Distribution (RTD) data have been deduced for three types of flight geometry, namely: Rectangular (RA), Equal Angular Distribution (EAD) and Equal Horizontal Distribution (EHD). For each flight shape, mean residence time {bar t} has been correlated with drum operating conditions. The sequence {bar t}{sub EAD} < {bar t}{sub RA} < {bar t}{sub EHD} has been validated. A comparison between the residence time predictions for the flighted and the bare drum has indicated that {bar t} for the former may be higher by up to 3.5 times than that for the latter. Exceptionally high solids hold-up values (i.e., Z = 0.13--0.42) have been observed and compared to theoretical predictions. Particle size segregation during lignite flow through the flighted drum was not confirmed.

Hatzilyberis, K.S.; Androutsopoulos, G.P. [National Technical Univ. of Athens (Greece). Dept. of Chemical Engineering

1999-04-01T23:59:59.000Z

451

An RTD study for the flow of lignite particles through a pilot rotary dryer. Part 1: Bare drum case  

SciTech Connect

In Part 1 of the present work a pilot rotating cylindrical drum, without an internal lifting flight system (bare), has been employed for the study of lignite motion through it, at ambient temperature. Tracer pulse stimulus-response experiments have been carried out to deduce residence time distribution (RTD) data and relate them to the operating conditions (slope, speed of revolution, etc.). Mean residence time, space-time and solids hold-up have been correlated with the drum operating conditions. Experimental data of mean axial velocity of solids have been compared with theoretical predictions and found to deviate within a {+-}15% margin. A size segregation of particles during their motion through the kiln under a variety of operating conditions has been confirmed and quantified. An average maximum divergence of 20% between the residence time of the smallest and that of the largest nominal particle sizes has been assessed.

Hatzilyberis, K.S.; Androutsopoulos, G.P. [National Technical Univ. of Athens (Greece). Dept. of Chemical Engineering

1999-04-01T23:59:59.000Z

452

A Comparative Study of Rotary Instrumentation of the Maxillary First Premolar Buccal Root Utilizing Cone Beam Computed Tomography.  

E-Print Network (OSTI)

??The study objective was to determine cementum-dentin wall thickness along the furcation groove in maxillary bifurcated first premolars after preparation with three successively larger, 0.04… (more)

Zigo, Stephan

2011-01-01T23:59:59.000Z

453

Achieve Continuous Injection of Solid Fuels into Advanced Combustion System Pressures  

SciTech Connect

The overall objective of this project is the development of a mechanical rotary-disk feeder, known as the Stamet Posimetric High Pressure Solids Feeder System, to demonstrate feeding of dry granular coal continuously and controllably into pressurized environments of up to 70 kg/cm2 (1,000 psi). This is the Phase III of the ongoing program. Earlier Phases 1 and II successfully demonstrated feeding into pressures up to 35 kg/cm{sup 2} (500 psi). The final report for those phases was submitted in April 2005. Based on the previous work done in Phases I & II using Powder River Basin coal provided by the PSDF facility in Wilsonville, AL, a Phase III feeder system was designed and built to accomplish the target of feeding the coal into a pressure of 70 kg/cm2 (1,000 psi) and to be capable of feed rates of up to 550 kilograms (1,200lbs) per hour. The drive motor system from Phase II was retained for use on Phase III since projected performance calculations indicated it should be capable of driving the Phase III pump to the target levels. The pump & motor system was installed in a custom built test rig comprising an inlet vessel containing an active live-wall hopper mounted on weigh cells in a support frame, transition into the pump inlet, transition from pump outlet and a receiver vessel containing a receiver drum supported on weigh cells. All pressure containment on the rig was rated to105 kg/cm{sup 2} (1,500psi) to accommodate the final pressure requirement of a proposed Phase IV of the program. A screw conveyor and batch hopper were added to transfer coal at atmospheric pressure from the shop floor up into the test rig to enable continuous feeding up to the capacity of the receiving vessel. Control & monitoring systems were up-rated from the Phase II system to cover the additional features incorporated in the Phase III rig, and provide closer control and expanded monitoring of the entire system. A program of testing and modification was carried out in Stamet's facility in CA, culminating in the first successful feeding of coal into the Phase III target of 70 kg/cm{sup 2} (1,000 psi) gas pressure in March 2007. Subsequently, repeated runs at pressure were achieved, and comparison of the data with Phase II results when adjusted for scale differences showed further power reductions of 40% had been achieved from the final Phase II pressure runs. The general design layout of a commercial-scale unit was conducted, and preliminary cost estimates made.

Derek L. Aldred; Timothy Saunders

2007-03-31T23:59:59.000Z

454

Analytical and experimental investigations of hybrid air foil bearings  

E-Print Network (OSTI)

Air foil bearings offer several advantages over oil-lubricated bearings in high speed micro-turbomachinery. With no contact between the rotor and bearings, the air foil bearings have higher service life and consequently lesser standstills between operations. However, the foil bearings have reliability issues that come from dry rubbing during start-up/shutdown and limited heat dissipation capability. Regardless of lubricating media, the hydrodynamic pressure generated provides only load support but no dissipation of parasitic energy generated by viscous drag and the heat conducted from other parts of the machine through the rotor. The present study is a continuation of the work on hybrid air foil bearings (HAFB) developed by Kim and Park, where they present a new concept of air foil bearing combining hydrodynamic air foil bearing with hydrostatic lift. Their experimental studies show that HAFB has superior performance compared to its hydrodynamic counterpart in load capacity and cooling performance. In this article, the bearing stiffness and damping coefficients of HAFB are calculated using a linear perturbation method developed for HAFB. The study focuses on circular HAFB with a single continuous top foil supported by bump foil. The research also includes a parametric study which outlines the dependence of the stiffness and damping coefficients on various design parameters like supply pressure ( P s ), feed parameter ( ? s ), excitation frequency (v), and bearing number (?). Furthermore the present research also includes experimental investigation of HAFB with bump foil as compliant structure. In the first phase of the experimental research a high speed test facility was designed and fabricated. The facility has the capability of running up to 90,000 RPM and has an electric motor drive. This article gives detailed description of this test rig and also includes data acquired during the commissioning phase of the test rig. The test rig was then used to measure the load capacity of HAFB.

Kumar, Manish

2008-08-01T23:59:59.000Z

455

Rig 'dzin Tshe dbang mchog grub (1761-1829) et la constitution du rNying ma rgyud 'bum de sDe dge  

E-Print Network (OSTI)

les textes en une collection à ‘Ug palung, le fief de la lignée Zur3. Un article plus récent encore de Mi Nyag Thubbstan chos dar fait le point sur les diverses versions existantes, mentionnantd’ailleurs un certain nombre d’entre elles qui ne sont... and the Bai-ro- rgyud-‘bum”, p. 9. 4 Mi nyag Thub bstan chos dar, “rNying ma rgyud 'bum gyi mtshams sbyor”, passim. 5 Voir Achard, “ La liste des Tantras du rNying ma’i rgyud ‘bum selon l’édition établie par Kun mkhyen ‘Jigs med gling pa”, Revue d...

Achard, Jean-Luc

2003-01-01T23:59:59.000Z

456

A pilgrim's guide to the Hidden Land of Sikkim proclaimed as a treasure by Rig 'dzin rgod kyi ldem 'phru can  

E-Print Network (OSTI)

Q~·~J5I'~ ~'~'33'33'i' ~~'~;S.t;·~·,.t;·~IIlJ5l'{t Moreover, when it came to the time of throwing grains in the air during the elaborate consecration ceremonies of that particular 'Stiipa of the Self-originated Crystal [image]' and the 'Stiipa... boulder in front of [the spring] with eight qualities, leaving his footprint as the support of blessings. Turning his face and gazing towards the southwest, he said: 'ITI SAMA Y A. Seal! Seal!' ~a.·~~·3·~·2f~·~·~:,¥~·a.!·~~·~~~·~t;'~~·t;I·~. ~t...

Boord, Martin J.

457

Thermo-Mechanical Performance of 230-345kV High Pressure Pipe Type Cable Systems: Selection of Full Size Test Rig  

Science Conference Proceedings (OSTI)

This is a front-end project to the wider experimental study of the thermo-mechanical performance of high-pressure fluid-filled (HPFF) transmission class cables in pipe systems. The project first reviews published work on the mechanisms of deterioration of HPFF cables due to thermo-mechanical bending activity (TMB). The principal mechanisms are the reduction in electrical strength caused by a) damage and opening of the outer electrostatic shield layers and b) the increase in the size of the fluid filled b...

2004-12-27T23:59:59.000Z

458

DEVELOPMENT AND DEMONSTRATION OF A SUPERCRITICAL HELIUM-COOLED CRYOGENIC VISCOUS COMPRESSOR PROTOTYPE FOR THE ITER VACUUM SYSTEM  

Science Conference Proceedings (OSTI)

As part of the vacuum system for the ITER fusion project, a cryogenic viscouscompressor (CVC) is being developed to collect hydrogenic exhaust gases from the toruscryopumps and compress them to a high enough pressure by regeneration for pumping tothe tritium reprocessing facility. Helium impurities that are a byproduct of the fusionreactions pass through the CVC and are pumped by conventional vacuum pumps andexhausted to the atmosphere. Before the development of a full-scale CVC, a representative,small-scale test prototype was designed, fabricated, and tested. With cooling provided bycold helium gas, hydrogen gas was introduced into the central column of the test prototypepump at flow rates between 0.001 g/s and 0.008 g/s. Based on the temperatures and flowrates of the cold helium gas, different percentages of hydrogen gas were frozen to the column surface wall as the hydrogen gas flow rate increased. Results from the measured temperatures and pressures will form a benchmark that will be used to judge future heattransfer enhancements to the prototype CVC and to develop a computational fluid dynamicmodel that will help develop design parameters for the full-scale CVC.

Duckworth, Robert C [ORNL; Baylor, Larry R [ORNL; Meitner, Steven J [ORNL; Combs, Stephen Kirk [ORNL; Rasmussen, David A [ORNL; Edgemon, Timothy D [ORNL; Hechler, Michael P [ORNL; Barbier, Charlotte N [ORNL; Pearce, R.J.H. [ITER Organization, Cadarache, France; Kersevan, R. [ITER Organization, Cadarache, France; Dremel, M. [ITER Organization, Cadarache, France; Boissin, Jean Claude [Consultant

2012-01-01T23:59:59.000Z

459

On The Use of Eddy Current Brakes as Tunable, Fast Turn-On Viscous Dampers For Haptic Rendering  

E-Print Network (OSTI)

based on eddy current brakes because they are inexpensive, friction- e-mail: andrewg@cim.mcgill.ca e-mail: champ@cim.mcgill.ca e-mail: hayward@cim.mcgill.ca free, capable of fast turn-on time, and linear

Hayward, Vincent

460

A distribution of the temperature in a ring of the incompressible, viscous liquid with two free boundaries. Exact solutions  

E-Print Network (OSTI)

It has been found the exact solutions for nonstationary distribution of the temperature in the liquid ring with two viscosities and two free boundaries of the ring.

N. F. Belmetsev; V. O. Bytev

2009-11-13T23:59:59.000Z

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461

Extended Sawyer–Eliassen Equation for Frontal Circulations in the Presence of small Viscous Moist Symmetric Stability  

Science Conference Proceedings (OSTI)

The Sawyer–Eliassen (S–E) equation for frontal circulations forced by a geostrophic stretching deformation is extended to include the effects of both negative moist potential vorticity (MPV) and eddy viscosity. Since the moist (precipitation) ...

Qin Xu

1989-09-01T23:59:59.000Z

462

The Step-Mountain Eta Coordinate Model: Further Developments of the Convection, Viscous Sublayer, and Turbulence Closure Schemes  

Science Conference Proceedings (OSTI)

The step-mountain eta model has shown a surprising skill in forecasting severe storms. Much of the credit for this should be given to the Betts and Miller (hereafter referred to as BM) convection scheme and the Mellor-Yamada (hereafter referred ...

Zaviša I. Janji?

1994-05-01T23:59:59.000Z

463

A Reduced-Boundary-Function Method for Convective Heat Transfer With Axial Heat Conduction and Viscous Dissipation  

Science Conference Proceedings (OSTI)

We introduce a new method of solution for the convective heat transfer under forced laminar flow that is confined by two parallel plates with a distance of 2a or by a circular tube with a radius of a. The advection-conduction equation is first mapped onto the boundary. The original problem of solving the unknown field T(x,r,t) is reduced to seek the solutions of T at the boundary (r = a or r = 0, r is the distance from the centerline shown in Fig. 1), i.e., the boundary functions T{sub a}(x,t) {triple_bond} T(x,r=a,t) and/or T{sub 0}(x,t) {triple_bond} T(x,r=0,t). In this manner, the original problem is significantly simplified by reducing the problem dimensionality from 3 to 2. The unknown field T(x,r,t) can be eventually solved in terms of these boundary functions. The method is applied to the convective heat transfer with uniform wall temperature boundary condition and with heat exchange between flowing fluids and its surroundings that is relevant to the geothermal applications. Analytical solutions are presented and validated for the steady-state problem using the proposed method.

Zhijie Xu

2012-07-01T23:59:59.000Z

464

A Reduced-Boundary-Function Method for Convective Heat Transfer with Axial Heat Conduction and Viscous Dissipation  

Science Conference Proceedings (OSTI)

We introduce a method of solution for the convective heat transfer under forced laminar flow that is confined by two parallel plates with a distance of 2a or by a circular tube with a radius of a. The advection-conduction equation is first mapped onto the boundary. The original problem of solving the unknown field is reduced to seek the solutions of T at the boundary (r=a or r=0, r is the distance from the centerline shown in Fig. 1), i.e. the boundary functions and/or . In this manner, the original problem is significantly simplified by reducing the problem dimensionality from 3 to 2. The unknown field can be eventually solved in terms of these boundary functions. The method is applied to the convective heat transfer with uniform wall temperature boundary condition and with heat exchange between flowing fluids and its surroundings that is relevant to the geothermal applications. Analytical solutions are presented and validated for the steady state problem using the proposed method.

Xu, Zhijie

2012-07-01T23:59:59.000Z

465

NETL: Methane Hydrates - ANS Research Project - The Doyon 14...  

NLE Websites -- All DOE Office Websites (Extended Search)

Doyon 14 Rig The Doyon 14 rig is a fully-integrated self-propelled, wheel-mounted rig developed on the North Slope and built in 1986. Doyon Drilling Inc. (DDI) operates on the...

466

Type I Interferon is Not Just for Viruses: Cytosolic Sensing of Bacterial Nucleic Acids  

E-Print Network (OSTI)

mechanism of RIG-I helicase and activation of antiviraltriphosphate by RIG-I helicase requires short blunt double-Fujita, T. (2004). The RNA helicase RIG-I has an essential

Monroe, Kathryn McGee

2011-01-01T23:59:59.000Z