Powered by Deep Web Technologies
Note: This page contains sample records for the topic "viscosity navy special" 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

navy  

National Nuclear Security Administration (NNSA)

5%2A en Powering the Nuclear Navy http:nnsa.energy.govourmissionpoweringnavy

Page...

2

Viscosity  

Science Journals Connector (OSTI)

Viscosity is ameasure of the resistance of ... forces that act within amoving fluid. Viscosity can also be defined as the ratio...

2008-01-01T23:59:59.000Z

3

Viscosity  

Science Journals Connector (OSTI)

Quantitatively, a measure of this property, defined as the shear stress divided by the rate of shear in steady simple-shear flow. Often used synonymously with apparent viscosity [Pa.s.].

2014-01-01T23:59:59.000Z

4

viscosity  

Science Journals Connector (OSTI)

...any internal resistance of substance to deformation or relative motion within itself, when it is subjected to shear stress by a liquid or gas. The ratio is called coefficient of viscosity, in units of poise. A...

2009-01-01T23:59:59.000Z

5

Nuclear viscosity  

Science Journals Connector (OSTI)

The decay rate of momentum in a nuclear reaction is given by an exact formula expressed in terms of the T matrix. A special case, where a viscosity coefficient can be estimated, is considered.

B. Giraud; J. Le Tourneux; E. Osnes

1975-01-01T23:59:59.000Z

6

Elongational viscosity  

Science Journals Connector (OSTI)

(extensional viscosity, Trouton viscosity) n. The viscosity that characterizes an element undergoing elongational flow ... rate, unlike the usual reduction of shear viscosity with rate. Tensile viscosities are ap...

2007-01-01T23:59:59.000Z

7

Navy Technology Evaluation Update  

Broader source: Energy.gov (indexed) [DOE]

Techval Program Techval Program y g FUPWG FUPWG November 19, 2009 Ontario, CA Paul Kistler, PE CEM NAVFAC Engineering Service Center Port Hueneme CA Techval Navy Energy Techval Purpose Use the data collected by Techval to transition newer technologies into Navy wide use technologies into Navy wide use Use the data collected by Techval to prevent the Navy from investing in technologies that do not work investing in technologies that do not work Tech Assistance Help the Navy to meet increasingly tougher energy goals 2 * * * Navy Techval Green Light Technologies *Oil Free Magnetic Bearing Chiller Compressor *Spectrally Enhanced Lighting *Heat Pipes *Vending Machine Occupancy Sensor *Thermal Destratifiers Heat Pipes *Duct Sealants *HID Dimming Thermal Destratifiers

8

Navy Technology Validation (Techval)  

Broader source: Energy.gov [DOE]

Presentation covers the Navy's energy efficiency activities and is given at the Federal Utility Partnership Working Group (FUPWG) Spring 2008 meeting in Destin, Florida.

9

Navy Technology Evaluation Update  

Broader source: Energy.gov [DOE]

Presentation covers the Navy Technology Evaluation update at the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009.

10

Reduced viscosity  

Science Journals Connector (OSTI)

n. (1) (IUPAC: viscosity number) Reduced viscosity is the fluid viscosity increase per unit of polymer solute concentration.... where ? ...

2007-01-01T23:59:59.000Z

11

Intrinsic Viscosity and Kinematic Viscosity  

Science Journals Connector (OSTI)

Intrinsic Viscosity and Kinematic Viscosity ... Hydrodynamic Characterization of Lupin Proteins: Solubility, Intrinsic Viscosity, and Molar Mass ... Hydrodynamic Characterization of Lupin Proteins: Solubility, Intrinsic Viscosity, and Molar Mass ...

Charles Tanford

1955-01-01T23:59:59.000Z

12

Viscosity races  

Science Journals Connector (OSTI)

Viscosity races ... A simple demonstration that illustrates the relationship between molecular size and viscosity. ...

William M. Hemmerlin; Kenton B. Abel

1991-01-01T23:59:59.000Z

13

Navy Techval Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ACTIVITY NAME ACTIVITY NAME Navy Techval Program Technology Deployment Working Group May 23, 2012 Paul Kistler, PE CEM NAVFAC Engineering Service Center Port Hueneme CA Navy Techval Magnetic Bearing Chiller Compressor What is it, how does it work? Data from projects Where does it work best? 3 Navy Techval Drawing courtesy of Danfoss Turbocor Compressors, Inc. The Magnetic Bearing Chiller Compressor at a Glance 4 2 ea. 60 ton chiller compressors with magnetic bearings NAS Jacksonville FL Navy Techval 5 Navy Techval 6 Navy Techval Compressor Efficacy Plant Efficacy Average Load Average Compressor Power Cooling Tower Power Plant Power New .57 kW/ton .61 kW/ton 75.4 ton 45.9kW 2.44kW 48.3 kW Existing 1.02 kW/ton 1.04 kW/ton 76.7 ton 78.5kW 1.55kW 80.1 kW

14

Navy Techval Program  

Broader source: Energy.gov (indexed) [DOE]

ACTIVITY NAME ACTIVITY NAME Navy Techval Program Technology Deployment Working Group May 23, 2012 Paul Kistler, PE CEM NAVFAC Engineering Service Center Port Hueneme CA Navy Techval Magnetic Bearing Chiller Compressor What is it, how does it work? Data from projects Where does it work best? 3 Navy Techval Drawing courtesy of Danfoss Turbocor Compressors, Inc. The Magnetic Bearing Chiller Compressor at a Glance 4 2 ea. 60 ton chiller compressors with magnetic bearings NAS Jacksonville FL Navy Techval 5 Navy Techval 6 Navy Techval Compressor Efficacy Plant Efficacy Average Load Average Compressor Power Cooling Tower Power Plant Power New .57 kW/ton .61 kW/ton 75.4 ton 45.9kW 2.44kW 48.3 kW Existing 1.02 kW/ton 1.04 kW/ton 76.7 ton 78.5kW 1.55kW 80.1 kW

15

Viscosity number  

Science Journals Connector (OSTI)

n. The IUPAC term for reduced viscosity. , where ? is the viscosity of the polymer solution; ? 0 is the viscosity of the pure s...

2007-01-01T23:59:59.000Z

16

Elongational Viscosity  

Science Journals Connector (OSTI)

n (extensional viscosity, Trouton viscosity) The viscosity that characterizes an element undergoing Elongational Flow ...(above). It is equal to the tensile ...

Jan W. Gooch

2011-01-01T23:59:59.000Z

17

Inherent viscosity  

Science Journals Connector (OSTI)

(logarithmic viscosity number) n. In measurement of dilute-solution viscosities, the inherent viscosity is the ratio of the natural logarithm of the relative viscosity to the concentration of the polymer in... ...

2007-01-01T23:59:59.000Z

18

Intrinsic viscosity  

Science Journals Connector (OSTI)

\\in-trin-zik-\\ (limiting viscosity number) n. In measurements of dilute-solution viscosity, intrinsic viscosity is the limit of the reduced and inherent viscosities as the concentration of polymer solute approac...

2007-01-01T23:59:59.000Z

19

Inherent Viscosity  

Science Journals Connector (OSTI)

n (logarithmic viscosity number) In measurement of dilute-solution viscosities, the inherent viscosity is the ratio of the natural logarithm of the relative viscosity to the concentration of the poly...

Jan W. Gooch

2011-01-01T23:59:59.000Z

20

nuclear navy | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

navy | National Nuclear Security Administration People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our...

Note: This page contains sample records for the topic "viscosity navy special" 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

Kinematic Viscosity  

Science Journals Connector (OSTI)

In classical fluid mechanics, kinematic viscosity equals the dynamic viscosity divided by the density of the material...2 s-1].

2014-01-01T23:59:59.000Z

22

Navy Techval Program  

Broader source: Energy.gov (indexed) [DOE]

FUPWG FUPWG October 20, 2010 Rapid City, SD Paul Kistler, PE CEM NAVFAC Engineering Service Center Port Hueneme CA Navy Techval Program Techval 2 Navy Techval Program Technologies *Work Station Specific Lighting *CO2 HVAC control What is it, how does it work? Data from projects Where does it work best? 3 What Is It? 1. Pendant light used mainly in open cubicles 2. Each cubicle has own dedicated fixture 3. One up light 4. Two down lights 5. Down light dimmed by the occupant 6. Up light on time clock 7. Occupancy sensor 8. Day light sensor 9. T5 5000K 10.Does not replace task lighting Work Station Specific Lighting 4 Work Station Specific Lighting Projected Savings 1. Projected payback is 17 years 2. Projected pay back on incremental cost is 3 to 4 years 3. Recent projects indicate a total savings of 70% lighting

23

Navy Technology Validation (Techval)  

Broader source: Energy.gov (indexed) [DOE]

Technology Technology Validation (Techval) FUPWG Spring Meeting 2008 April 15, 2008 Destin, FL Paul Kistler, PE CEM NAVFAC Engineering Service Center Port Hueneme CA Navy Techval CURRENT PROJECTS * Cool Roof reflective roof coating  NS Pearl Harbor HI * Thermal Destratifiers  NAS Oceana VA * Boiler Combustion Controls  USNA Annapolis MD * Sand Filters  NAS Lemoore CA * Spectrally Enhanced Lighting  Navy Yard Washington DC * Desuperheater  NS Norfolk VA  NAS North Island CA * HVAC CO2 Controls  NAB Little Creek VA  NAVSUPPACT Mid-South TN  NB Kitsap Bremerton WA *HVAC Occupancy Controls NAS Oceana VA *Electromagnetic Pulse Water Treatment NADEP San Diego CA NSY Puget Sound WA *LED Parking Lot Lighting NBVC Port Hueneme CA Techval

24

Specific Viscosity  

Science Journals Connector (OSTI)

n Equal to the relative viscosity of the same solution minus one. It represents the increase in viscosity that may be contributed by the polymeric solute. The specific viscosity, ?sp is defined by th...

Jan W. Gooch

2011-01-01T23:59:59.000Z

25

Department of the Navy Bioeconomy Activity  

Broader source: Energy.gov [DOE]

Plenary V: Federal Activities in the Bioeconomy Department of the Navy Bioeconomy Activity Chris Tindal, Director for Operational Energy, U.S. Department of Navy

26

Viscosity index  

Science Journals Connector (OSTI)

(1929) n....An arbitrary number assigned as a measure of the constancy of the viscosity of a lubricating oil with change of temperature with higher numbers indicating viscosities that change little with temperatu...

2007-01-01T23:59:59.000Z

27

Initial viscosity  

Science Journals Connector (OSTI)

n....A term used in the vinyl plastisol industry to denote the viscosity measured immediately after the plastisol has been mixed. The viscosity normally rises at a declining rate after...

2007-01-01T23:59:59.000Z

28

Viscosity depressant  

Science Journals Connector (OSTI)

n....A substance that, when added in a relatively minor amount to a liquid, lowers its viscosity. Such materials, e.g., ethoxylated ... often incorporated in vinyl plastisols to lower their viscosities

2007-01-01T23:59:59.000Z

29

Initial Viscosity  

Science Journals Connector (OSTI)

n...A term used in the vinyl plastisol industry to denote the viscosity measured immediately after the plastisol has been mixed. The viscosity normally rises at a declining rate after...

Jan W. Gooch

2011-01-01T23:59:59.000Z

30

DEPARTMENT OF THE NAVY ENERGY PROGRAM  

Broader source: Energy.gov [DOE]

Tom Hicks, Deputy Assistant Secretary of the Navy for Energy, presentation at the Industry Roundtable.

31

Nonequilibrium viscosity of glass  

Science Journals Connector (OSTI)

Since glass is a nonequilibrium material, its properties depend on both composition and thermal history. While most prior studies have focused on equilibrium liquid viscosity, an accurate description of nonequilibrium viscosity is essential for understanding the low temperature dynamics of glass. Departure from equilibrium occurs as a glass-forming system is cooled through the glass transition range. The glass transition involves a continuous breakdown of ergodicity as the system gradually becomes trapped in a subset of the available configurational phase space. At very low temperatures a glass is perfectly nonergodic (or isostructural), and the viscosity is described well by an Arrhenius form. However, the behavior of viscosity during the glass transition range itself is not yet understood. In this paper, we address the problem of glass viscosity using the enthalpy landscape model of Mauro and Loucks [Phys. Rev. B 76, 174202 (2007)] for selenium, an elemental glass former. To study a wide range of thermal histories, we compute nonequilibrium viscosity with cooling rates from 10?12 to 1012?K/s. Based on these detailed landscape calculations, we propose a simplified phenomenological model capturing the essential physics of glass viscosity. The phenomenological model incorporates an ergodicity parameter that accounts for the continuous breakdown of ergodicity at the glass transition. We show a direct relationship between the nonequilibrium viscosity parameters and the fragility of the supercooled liquid. The nonequilibrium viscosity model is validated against experimental measurements of Corning EAGLE XG glass. The measurements are performed using a specially designed beam-bending apparatus capable of accurate nonequilibrium viscosity measurements up to 1016?Pa?s. Using a common set of parameters, the phenomenological model provides an accurate description of EAGLE XG viscosity over the full range of measured temperatures and fictive temperatures.

John C. Mauro; Douglas C. Allan; Marcel Potuzak

2009-09-30T23:59:59.000Z

32

Bravo Araby Navy Base Holtville  

E-Print Network [OSTI]

Plaster City No Man's Land Imperial Valley East Mesa No. 3 East Mesa No. 2 East Mesa No. 1 Dixieland Mesquite Loveland Imperial Highline Descanso Calexico Sand Hill Navy Base Holtville Glencliff Foothills

33

Navy Geothermal Program | Open Energy Information  

Open Energy Info (EERE)

Navy Geothermal Program Navy Geothermal Program Jump to: navigation, search Logo: Navy Geothermal Program Office Name Navy Geothermal Program Office Address 429 East Bowen Road Place China Lake, CA Zip 93555 Year founded 1978 Phone number (760) 939-2700 Website https://portal.navfac.navy.mil References Navy Facilities Engineering Command Website[1] Navy Geothermal Program is an organization based in China Lake, CA. The Navy Geothermal Program Office (GPO) is the Department of Defense's lead organization for the exploration, development, and management of geothermal resources on military controlled land, worldwide. The Department of Defense (DOD) established the GPO in 1978, and designated the Navy as the lead agency for geothermal exploration and development on military lands.

34

Philadelphia Navy Yard: UESC Project  

Broader source: Energy.gov (indexed) [DOE]

Navy Yard Navy Yard UESC project with PGW ESCO Perspective Presented by Christopher Abbuehl Constellation Energy Integrated Energy Company * Generation - 12,000+ megawatts of owned generating capacity (fossil, nuclear &renewable ) * Electric Commodity - 62 million MWH peak load served to retail power customers (2010) Trusted supplier to 2/3 of the Fortune 100 * Gas Commodity - 334 million mmBTUs of natural gas delivered in open retail markets (2010) * Owns Baltimore Gas and Electric ESCO Services * More than 25 years of comprehensive energy projects through performance contracting. * Over 4,000 Energy Savings Projects implemented for large governmental, institutional, and private sector customers Constellation Energy Key Facts 2 * Established: 1816 *

35

Kinematic Viscosity  

Science Journals Connector (OSTI)

n (kinetic viscosity) The absolute (dynamic) viscosity of a fluid divided by the density...2/s, but the cgs unit, the stoke, which equals 10?4 m2/s, is still in wide use, as is its submultiple, the c...

Jan W. Gooch

2011-01-01T23:59:59.000Z

36

Navy 1 Geothermal Area | Department of Energy  

Energy Savers [EERE]

Geothermal Area Navy 1 Geothermal Area The Navy 1 Geothermal Project is located on the test and evaluation ranges of the Naval Air Weapons Station, China Lake. At its peak, the...

37

Melt Viscosity  

Science Journals Connector (OSTI)

n...The resistance to shear in a molten resin, quantified as the quotient of shear stress divided by shear rate at any point in the flowing material. Elongational viscosity, which comes into plan in ...

Jan W. Gooch

2011-01-01T23:59:59.000Z

38

Viscosity Coefficient  

Science Journals Connector (OSTI)

n...(1866) The shearing stress necessary to induce a unit velocity flow gradient in a material. In actual measurement, the viscosity coefficient of a material is obtained from...Physical Chemistry of...

Jan W. Gooch

2011-01-01T23:59:59.000Z

39

Magnetic Viscosity  

Science Journals Connector (OSTI)

1 January 1893 research-article Magnetic Viscosity J. Hopkinson E. Wilson F. Lydall The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. www.jstor.org

1893-01-01T23:59:59.000Z

40

U.S. Navy- Moanalua Terrace, Hawaii  

Broader source: Energy.gov [DOE]

Moanalua Terrace is a U.S. Navy housing project on Oahu, Hawaii. At this site the Navy had demolished 752 units of family housing, which were being rebuilt in four phases. The Hawaiian Electric Company's (HECO's) $1,500 per unit rebate for solar water heaters installed on new construction projects was an incentive for the Navy to install solar water heaters on family housing units.

Note: This page contains sample records for the topic "viscosity navy special" 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

Department of the Navy Bioeconomy Activity  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Preferences - Navy is feedstock agnostic; targets finished fuel specifications * GHG emissions - EISA 526 dictates same or better GHG emissions * Price: Will be biggest...

42

Viscosity of polymer solutions  

Science Journals Connector (OSTI)

Viscosity of polymer solutions ... Abstracts for Volume 5A, Number 2. This program contains three components: "Density of Liquids", "Viscosity of Liquids", and "Viscosity of Polymer Solutions". ...

Gary L. Bertrand

1992-01-01T23:59:59.000Z

43

Navy Mobility Fuels Forecasting system: Phase 3, Report. [Navy  

SciTech Connect (OSTI)

The world oil scenarios were analyzed using the NMFFS. The linear programming models of the NMFFS have great value in the analysis of petroleum resource allocation and refining. The results of the general market analysis indicated that all disruptions resulted in reduced crude oil supply, higher prices, and reduced demand in the world. In a major Persian Gulf disruption, US refining capability appeared adequate to satisfy normal US military fuel requirements, including those supplied by foreign refiners. However, this would be at the expense of civilian fuels production. Mobilization fuel requirements during a major disruption that curtailed most Persian Gulf and Venezuelan crude exports resulted in significant competition in the production of civil versus military jet fuels, particularly in Texas Gulf Coast and West Coast refineries. In all disruption scenarios studied, the Middle East emerged as a potentially important refiner of both civil and military jet fuels. With SPR drawdown and the IEA agreements in effect, the impacts of the disruptions on the production of refined products were significantly reduced, particularly in the United States, compared to the impacts without these programs. The IEA agreement caused a redistribution of the regional demand levels among IEA countries in favor of the major oil consuming countries like the United States, Canada, and some of the European countries. The results of the RYM analysis of refinery regions focused on the availability and quality of JP-5 production in key Navy supply regions. Several findings potentially important to the Navy are listed.

Hadder, G.R.; Das, S.; Lee, R.; Davis, R.M.

1987-08-01T23:59:59.000Z

44

Viscosity, specific (for liquids)  

Science Journals Connector (OSTI)

n. The ratio between the viscosity of a liquid and the viscosity of water at the same temperature. Specific viscosity is sometimes used interchangeably with relative viscosity for liquids.

2007-01-01T23:59:59.000Z

45

Lunar Viscosity Models  

Science Journals Connector (OSTI)

31 March 1977 research-article Lunar Viscosity Models R. Meissner Viscosity values as estimated from isostatic processes and...depth seem to be connected with a limited range of viscosity values. A tentative relation between viscosity...

1977-01-01T23:59:59.000Z

46

Navy I Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

Navy I Geothermal Facility Navy I Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Navy I Geothermal Facility General Information Name Navy I Geothermal Facility Facility Navy I Sector Geothermal energy Location Information Location Coso Junction, California Coordinates 36.03735294063°, -117.79768466949° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.03735294063,"lon":-117.79768466949,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

47

NETL: News Release - SECA Fuel Cell Proves Successful in Navy's  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5, 2008 5, 2008 SECA Fuel Cell Proves Successful in Navy's Proof-of-Concept Testing Spinoff Applications Mark the Road to Widespread Commercialization Washington, D. C. - Two technologies developed under the U.S. Department of Energy's Solid State Energy Conversion Alliance (SECA) fuel cell program recently passed successful proof-of-concept tests by the U.S. Navy's Naval Undersea Warfare Center Division located in Newport, Rhode Island. The tests mark a breakthrough for solid oxide fuel cell (SOFC)-based power systems and reflect the potential of SOFC technology for other spinoff market applications as well. The proof-of-concept tests incorporated two technologies developed under the SECA program: SOFC stacks manufactured by Delphi Corporation of Flint, Mich., and a specialized blower developed for SECA SOFC systems by R&D Dynamics, Bloomfield, Conn., under DOE's Small Business Innovation Research program. The blower was used successfully in the test to recycle high-temperature fuel exhaust flows back to the fuel reformer. The proof-of-concept system met the U.S. Navy's targets for system size, power output, and efficiency.

48

Phonon Viscosity  

Science Journals Connector (OSTI)

The Boltzmann equation for thermal phonons in a dielectric crystal in the presence of a slowly varying but otherwise arbitrary, strain field is solved formally by expanding the phonon distribution function in terms of eigenfunctions of the collision operator. The macroscopic stress is then calculated in terms of the macroscopic strain and the phonon distribution function by using the quasiharmonic approximation. The resulting equation for the stress is of the same form as that given by thermoelasticity, except for the presence of an extra term which is linear in the strain rate. The coefficient of the strain rate in this term is identified with the phonon viscosity tensor, and a formal expression for this tensor is obtained.

H. J. MARIS

1969-12-15T23:59:59.000Z

49

Department of the Navy, DPA Presentation  

Broader source: Energy.gov [DOE]

Session 1-B: Advancing Alternative Fuels for the Military and Aviation Sector Breakout Session 1: New Developments and Hot Topics Chris Tindal, Director of Operational Energy, Office of the Deputy Assistant Secretary of the Navy for Energy

50

UESC Case Study: Philadelphia Navy Yard  

Broader source: Energy.gov [DOE]

Presentationgiven at the Fall 2011 Federal Utility Partnership Working Group (FUPWG) meetingfeatures a utility energy services contract (UESC) case study concerning the Philadelphia Navy Yard.

51

Navy Technology Validation (Techval) Monitoring Results  

Broader source: Energy.gov [DOE]

Presentation covers the Navy Technology Validation (Techval) Monitoring Results and is given at the Federal Utility Partnership Working Group (FUPWG) 2006 Spring meeting, held on May 3-4, 2006 in Atlanta, Georgia.

52

Viscosity bound violation in higher derivative gravity  

SciTech Connect (OSTI)

Motivated by the vast string landscape, we consider the shear viscosity to entropy density ratio in conformal field theories dual to Einstein gravity with curvature square corrections. After field redefinitions these theories reduce to Gauss-Bonnet gravity, which has special properties that allow us to compute the shear viscosity nonperturbatively in the Gauss-Bonnet coupling. By tuning of the coupling, the value of the shear viscosity to entropy density ratio can be adjusted to any positive value from infinity down to zero, thus violating the conjectured viscosity bound. At linear order in the coupling, we also check consistency of four different methods to calculate the shear viscosity, and we find that all of them agree. We search for possible pathologies associated with this class of theories violating the viscosity bound.

Brigante, Mauro; Liu Hong; Myers, Robert C.; Shenker, Stephen; Yaida, Sho [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5 (Canada) and Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada); Department of Physics, Stanford University, Stanford, CA 94305 (United States)

2008-06-15T23:59:59.000Z

53

Navy II Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

II Geothermal Facility II Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Navy II Geothermal Facility General Information Name Navy II Geothermal Facility Facility Navy II Sector Geothermal energy Location Information Location Coso Junction, California Coordinates 36.018975669535°, -117.79197692871° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.018975669535,"lon":-117.79197692871,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

54

DEPARTMENT OF THE NAVY Energy Goals  

Broader source: Energy.gov (indexed) [DOE]

NAVY NAVY Energy Goals 31 May 2013 CAPT Kerry Gilpin, USN Director, 1GW Task Force Marines checking door-to-door in New Orleans, September 2005 SECNAV Energy Goals Increase Alternative Energy Sources Ashore Sail the "Great Green Fleet" Reduce Non-tactical Petroleum Use Energy Efficient Acquisitions Increase Alternative Energy Department-wide It's about the Mission Gunnery Control Console, USS ANZIO (CG 68) What's the next mission? SH-60F helicopter from USS RONALD REAGAN (CVN 76) surveys tsunami damage, 21 March 2011 1GW of renewable energy: enough to power 250,000 homes or a city the size of Orlando, FL http://www.secnav.navy.mil/eie/ Pages/Energy.aspx Naval Station Sasebo, Japan

55

U.S. Navy- San Clemente Island, California  

Broader source: Energy.gov [DOE]

San Clemente Island is one of the Channel Islands off the southern coast of California. The U.S. Navy owns the 21-mile long island, making it one of the Navy's largest real estate assets. The Navy uses the island for research, development, testing, evaluation, and training.

56

Upcoming Funding Opportunity for Competitive Marine and Hydrokinetic (MHK) Demonstrations at the Navys Wave Energy Test Site (WETS)  

Broader source: Energy.gov [DOE]

On March 24, 2014, the U.S. Department of Energy (DOE) announced a Notice of Intent to issue a funding opportunity titled Competitive Marine and Hydrokinetic (MHK) Demonstrations at the Navys Wave Energy Test Site (WETS).

57

Navy's Section 2922a Legislation Success Stories  

Broader source: Energy.gov [DOE]

Presentationgiven at the Fall 2011 Federal Utility Partnership Working Group (FUPWG) meetingfeatures U.S. Department of Navy success stories in relation to Section 2922a legislation, which involves contracts for energy or fuel for military installations.

58

Viscosity of Metallic Liquids  

Science Journals Connector (OSTI)

... Viscosity measurements which have been recently carried out in this Department show that certain views normally ... not supported by experiments. For example, it is generally assumed1 that the relationship of viscosity to temperature is given by:

T. P. YAO; V. KONDIC

1950-09-16T23:59:59.000Z

59

Density measurements Viscosity measurements  

E-Print Network [OSTI]

Density measurements Viscosity measurements Temperature measurements Pressure measurements Flow rate measurements Velocity measurements Sensors How to measure fluid flow properties ? Am´elie Danlos Ravelet Experimental methods for fluid flows: an introduction #12;Density measurements Viscosity

Ravelet, Florent

60

Viscosity at RHIC  

E-Print Network [OSTI]

A variety of physical phenomena can lead to viscous effects. In this talk we review several sources of shear and bulk viscosity with an emphasis on the bulk viscosity associated with chiral restoration. We show that in the limit of a second order phase transition, the viscosity peaks in a singularity at the critical point.

Scott Pratt; Kerstin Paech

2006-04-03T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Powering the Nuclear Navy | National Nuclear Security Administration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powering the Nuclear Navy Powering the Nuclear Navy Home > About Us > Our Programs > Powering the Nuclear Navy Powering the Nuclear Navy The Naval Nuclear Propulsion Program provides militarily effective nuclear propulsion plants and ensures their safe, reliable and long-lived operation. This mission requires the combination of fully trained U.S. Navy men and women with ships that excel in endurance, stealth, speed, and independence from supply chains. NNSA's Navy Reactors Program provides the design, development and operational support required to provide militarily effective nuclear propulsion plants and ensure their safe, reliable and long-lived operation. This budget requests more than $1 billion to power a modern nuclear Navy: Continuation of design and development work for the OHIO-class

62

Nuclear Navy Turns 50 | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Navy Turns 50 | National Nuclear Security Administration Navy Turns 50 | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > Nuclear Navy Turns 50 Nuclear Navy Turns 50 August 01, 1998 Washington, DC Nuclear Navy Turns 50 Crew members of the U.S.S. Enterprise, the first nuclear-powered aircraft

63

Nuclear Navy Turns 50 | National Nuclear Security Administration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Navy Turns 50 | National Nuclear Security Administration Navy Turns 50 | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > Nuclear Navy Turns 50 Nuclear Navy Turns 50 August 01, 1998 Washington, DC Nuclear Navy Turns 50 Crew members of the U.S.S. Enterprise, the first nuclear-powered aircraft

64

Duncan - Rickover and the Nuclear Navy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Operational Management » History » Historical Resources » Operational Management » History » Historical Resources » History Publications » Duncan - Rickover and the Nuclear Navy Duncan - Rickover and the Nuclear Navy Francis Duncan. Rickcover and the Nuclear Navy: The Discipline of Technology. 1989. The text in each PDF is fully searchable. DuncanRickoverandtheNuclearNavyComplete.pdf DuncanRickoverandtheNuclearNavyPicturesOnly.pdf More Documents & Publications Hewlett and Duncan, Nuclear Navy, 1946-1962 2008_Transition_Program_Details_Book_Three.pdf Hewlett and Holl - Atoms for Peace and War Aviation Management Green Leases Executive Secretariat Energy Reduction at HQ Real Estate Approvals Documents and Publications Facilities and Infrastructure Federal Advisory Committee Management Freedom of Information Act

65

U.S. Navy - Moanalua Terrace, Hawaii | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Moanalua Terrace, Hawaii Moanalua Terrace, Hawaii U.S. Navy - Moanalua Terrace, Hawaii October 7, 2013 - 10:10am Addthis Photo of the Moanalua Terrace U.S. Navy Housing Project on Oahu, Hawaii Moanalua Terrace is a U.S. Navy housing project on Oahu, Hawaii. At this site the Navy had demolished 752 units of family housing, which were being rebuilt in four phases. The Hawaiian Electric Company's (HECO's) $1,500 per unit rebate for solar water heaters installed on new construction projects was an incentive for the Navy to install solar water heaters on family housing units. When the 100 homes in Phase I were built, money was not available for solar water heaters. However, the Navy secured a $130,000 grant from the Federal Energy Management Program (FEMP) to retrofit the Phase I homes with solar

66

Viscosity in modified gravity  

E-Print Network [OSTI]

A bulk viscosity is introduced in the formalism of modified gravity. It is shown that, on the basis of a natural scaling law for the viscosity, a simple solution can be found for quantities such as the Hubble parameter and the energy density. These solutions may incorporate a viscosity-induced Big Rip singularity. By introducing a phase transition in the cosmic fluid, the future singularity can nevertheless in principle be avoided.

Iver Brevik

2012-11-12T23:59:59.000Z

67

Viscosity of Silicate Melts.  

E-Print Network [OSTI]

??Viscosity of silicate melts is of fundamental importance in understanding volcanic and magmatic processes in Earth. In this dissertation, experiments were conducted to obtain high-pressure (more)

Hui, Hejiu

2008-01-01T23:59:59.000Z

68

Viscosity, Absolute Dynamic  

Science Journals Connector (OSTI)

where A is the area (cm2). (dv/dx) is the velocity gradient (s?1...), and ? is the coefficient of absolute viscosity (poise).

Jan W. Gooch

2011-01-01T23:59:59.000Z

69

Viscosity, absolute dynamic  

Science Journals Connector (OSTI)

where A is the area (cm2), (dv/dx) the velocity gradient (s1), and ? is the coefficient of absolute viscosity (poise).

2007-01-01T23:59:59.000Z

70

Viscosity of Neopentane  

Science Journals Connector (OSTI)

The viscosity of neopentane has been measured between ?15C and 30C. These results are consistent with published work covering the temperature range 30C to 150C. The viscosity data for neopentane have been compared with similar data for the other pentanes. This comparison has provided an example of the importance of molecular shape for viscosity behavior. The possible significance of molecular shape for the interpretation of viscosity curves of binary mixtures is noted. Finally it has been suggested that further work on liquids composed of spherical molecules might be worthwhile.

M. K. Phibbs

1951-01-01T23:59:59.000Z

71

Viscosity Measurements with Glass  

Science Journals Connector (OSTI)

1 May 1925 research-article Viscosity Measurements with Glass Vaughan H. Stott Edith Irvine D. Turner The Royal Society is collaborating with JSTOR to digitize, preserve...

1925-01-01T23:59:59.000Z

72

FUPWG Spring 2010 Meeting in Rapid City: Navy Techval Program  

Broader source: Energy.gov [DOE]

Presentation covers the Navy Techval Program and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Rapid City, South Dakota.

73

Departments of Energy, Navy, and Agriculture Invest $210 million...  

Office of Environmental Management (EM)

In 2014, the U.S. Departments of Energy, Navy, and Agriculture announced that Emerald Biofuels, Fulcrum Energy, and Red Rock Biofuels have been awarded contracts to construct...

74

California: Advanced 'Drop-In' Biofuels Power the Navy's Green...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Developing Cheaper Algae Biofuels, Brings Jobs to Pennsylvania Fueling the Navy's Great Green Fleet with Advanced Biofuels Cellana, Inc.'s Kona Demonstration Facility is working...

75

The Viscosity of Liquids  

Science Journals Connector (OSTI)

... of momentum between them. In the case of a gas, Maxwell showed how the viscosity can be derived by considering this momentum as being communicated by molecules transferring themselves bodily ... fulfilment of the conditions postulated in Maxwell's treatment, and the fact that while gas viscosity goes up with temperature liquid ...

E. N. DA C. ANDRADE

1930-04-12T23:59:59.000Z

76

Viscosity Measurements on Nitrogen  

Science Journals Connector (OSTI)

Viscosity Measurements on Nitrogen ... (15)?Clarke, A. G.; Smith, E. B. Low-temperature viscosities and intermolecular forces of simple gases. ... The coupling also serves as a frictionless bearing for a slender rotating cylindrical body which is slowed down due to the viscous drag of the fluid surrounding the cylinder. ...

Daniel Seibt; Eckhard Vogel; Eckard Bich; Daniel Buttig; Egon Hassel

2006-01-11T23:59:59.000Z

77

Viscosity model of high-viscosity dispersing system  

Science Journals Connector (OSTI)

High-viscosity dispersing system is formed by dispersing the solid particles in the high-viscosity continuous medium. It is very easy to ... the rheology behavior becomes complicated. The apparent viscosity of th...

Xian-fu Wei ???; Na Wang ??

2008-09-01T23:59:59.000Z

78

Thomas P. Dee Deputy Assistant Secretary of the Navy  

E-Print Network [OSTI]

in the Office of the Under Secretary of Defense Acquisition, Technology and Logistics. While there he oversaw2/28/2013 Thomas P. Dee Deputy Assistant Secretary of the Navy (Expeditionary Programs and Logistics Management) Office of the Assistant Secretary of the Navy (Research, Development & Acquisition) Mr

79

Presentation to the EAC - Philadelphia Navy Yard - Will Agate  

Broader source: Energy.gov (indexed) [DOE]

NAVY YARD NAVY YARD The Navy Yard Background * 125 years as an active military base & shipyard * Regional economic hub * 1,000 acres acquired in 2000 * Growth capacity * Access to:  Airport  Universities  Regional Highways  Labor Force * Historic Waterfront Campus Master Plan: Sustainability * Building Design - LEED & Design Review * Open Space * Stormwater Management * Site Operations * Smart Grid & Renewable Power * Business Development Opportunity Master Plan The Navy Yard Today * Over 120 companies and 3 Navy activities * 10,000 employees by end of 2012 * In excess of 6.5 million sq ft occupied * +$650 million of private investment * Industrial, Office and R&D campus The Energy Efficient Buildings Hub A U.S. Department of Energy Innovation Hub located at

80

Navy Lowering Upfront Costs to Save Energy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Navy Lowering Upfront Costs to Save Energy Navy Lowering Upfront Costs to Save Energy Navy Lowering Upfront Costs to Save Energy June 21, 2010 - 11:23am Addthis This hangar at Naval Air Station Meridian in Mississippi received an energy-efficiency makeover that included major lighting retrofits and water conservation measures. | Photo Courtesy U.S. Navy This hangar at Naval Air Station Meridian in Mississippi received an energy-efficiency makeover that included major lighting retrofits and water conservation measures. | Photo Courtesy U.S. Navy Joshua DeLung What does this mean for me? 2 mechanical project upgrades, 16 lighting project upgrades and 19 water conservation measures $267,565 in taxpayer money saved annually 3.1 million gallons of water saved annuallym 1,889 MWh of electricity saved annually and 56,118 therms natural gas saved annually

Note: This page contains sample records for the topic "viscosity navy special" 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

Viscosity Measurements on Gaseous Ethane  

Science Journals Connector (OSTI)

Viscosity Measurements on Gaseous Ethane ... Only the pressures, densities, and viscosities are given in the table with regard to the large number of experimental points. ...

Jrg Wilhelm; Daniel Seibt; Eckhard Vogel; Daniel Buttig; Egon Hassel

2005-11-08T23:59:59.000Z

82

Energy consumption evaluation of United States Navy LEED certified buildings for fiscal year 2009 .  

E-Print Network [OSTI]

??As of October 1, 2008, the Department of the Navy inserted the requirement that all new buildings constructed for the United States Navy and United (more)

Mangasarian, Seth

2010-01-01T23:59:59.000Z

83

May 2013 Office of the Director DONhrFAQ@navy.mil DON Civilians Help Create Navy's First Laser Weapon  

E-Print Network [OSTI]

Navy's First Laser Weapon Department of the Navy (DON) civilians from Office of Naval Research (ONR down drones and disabling small boats. The Department's Laser Weapon System (LaWS) will be the first of electrically powered solid-state laser weapons developed by civilians that give sailors and marines flexibility

84

UESC Case Study: Philadelphia Navy Yard  

Broader source: Energy.gov (indexed) [DOE]

Case Study Case Study Philadelphia Navy Yard Presented by M. Richard Boyette and Beverly C. Wade 26 October 2011 UESC Financed Energy Projects - Basics Aligning NAVFAC Business Practices with Federal Energy Management Program Processes NAVFAC BMS 5.1.3 UESC Process FEMP UESC Process 2 Sometimes things are difficult, but hard work overcomes obstacles !!!!! Financed Energy Projects - Challenges * Financed Energy Project Challenges * General Issues * Financed projects are designed to save energy costs but overarching goals are set up to reduce energy usage and energy intensity. * Financed projects favor regions or bases with higher utility rates. * Financed projects cannot be utilized in cases where energy consumption is reduced substantially but energy cost savings is

85

Zahn Viscosity Cup  

Science Journals Connector (OSTI)

n A one-shot devices for obtaining quick measurements in a roughly linear way, of the Kinematic Viscosity of the test liquid, typically a free-flowing fluid...

Jan W. Gooch

2011-01-01T23:59:59.000Z

86

The Viscosity of Ammonia  

Science Journals Connector (OSTI)

A new representation of the viscosity of ammonia is presented. The representative equations are based on a set of experimental data selected as a result of a critical assessment of the available information. The validity of the representation extends from 196 K to the critical temperature for both liquid and vapor phases. In the supercritical region the temperature range extends to 680 K for pressures at or below ambient and to 600 K for pressures up to 50 MPa. The accuracy of the representation varies from 0.5% for the viscosity of the dilute gas phase at moderate temperatures to about 5% for the viscosity at high pressures and temperatures. Tables of the viscosity generated by the correlating equation at selected temperatures and pressures and along the saturation line are presented to provide easy reference as well as for the validation of computer codes.

A. Fenghour; William A. Wakeham; V. Vesovic; J. T. R. Watson; J. Millat; E. Vogel

1995-01-01T23:59:59.000Z

87

The Viscosity of Ice  

Science Journals Connector (OSTI)

11 September 1908 research-article The Viscosity of Ice R. M. Deeley The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of...

1908-01-01T23:59:59.000Z

88

Viscosity and Riemann solutions On the Influence of Viscosity on  

E-Print Network [OSTI]

Viscosity and Riemann solutions On the Influence of Viscosity on Riemann Solutions SunŸcica Ÿ Cani and uniqueness of Riemann solutions are affected by the precise form of viscosity which is used to select shock on viscosity and distinguish between Lax shock waves with and without a profile. These bifurcations

Canic, Suncica

89

Viscosity of colloidal suspensions  

Science Journals Connector (OSTI)

Simple expressions are given for the Newtonian viscosity ?N(?) as well as the viscoelastic behavior of the viscosity ?(?,?) of neutral monodisperse hard-sphere colloidal suspensions as a function of volume fraction ? and frequency ? over the entire fluid range, i.e., for volume fractions 0viscosity as composed as the sum of two relevant physical processes: ?(?,?)=??(?)+?cd(?,?), where ??(?)=?0?(?) is the infinite frequency (or very short time) viscosity, with ?0 the solvent viscosity, ?(?) the equilibrium hard-sphere radial distribution function at contact, and ?cd(?,?) the contribution due to the diffusion of the colloidal particles out of cages formed by their neighbors, on the Pclet time scale ?P, the dominant physical process in concentrated colloidal suspensions. The Newtonian viscosity ?N(?)=?(?,?=0) agrees very well with the extensive experiments of van der Werff et al., [Phys. Rev. A 39, 795 (1989); J. Rheol. 33, 421 (1989)] and others. Also, the asymptotic behavior for large ? is of the form ??(?)+?0A(?)(??P)-1/2, in agreement with these experiments, but the theoretical coefficient A(?) differs by a constant factor 2/?(?) from the exact coefficient, computed from the Green-Kubo formula for ?(?,?). This still enables us to predict for practical purposes the viscoelastic behavior of monodisperse spherical colloidal suspensions for all volume fractions by a simple time rescaling.

R. Verberg; I. M. de Schepper; E. G. D. Cohen

1997-03-01T23:59:59.000Z

90

Manhattan Project: The Navy and Thermal Diffusion, 1944  

Office of Scientific and Technical Information (OSTI)

Diffusion columns, S-50 Thermal Diffusion Plant, Oak Ridge, 1945. THE NAVY AND THERMAL DIFFUSION Diffusion columns, S-50 Thermal Diffusion Plant, Oak Ridge, 1945. THE NAVY AND THERMAL DIFFUSION (Oak Ridge: Clinton, 1944) Events > The Uranium Path to the Bomb, 1942-1944 Y-12: Design, 1942-1943 Y-12: Construction, 1943 Y-12: Operation, 1943-1944 Working K-25 into the Mix, 1943-1944 The Navy and Thermal Diffusion, 1944 As problems with both Y-12 and K-25 reached crisis proportions in spring and summer 1944, the Manhattan Project received help from an unexpected source: the United States Navy. President Roosevelt had instructed that the atomic bomb effort be an Army program and that the Navy be excluded from deliberations. Navy research on atomic power, conducted primarily for submarines, received no direct aid from Leslie Groves, who, in fact, was not up-to-date on the state of Navy efforts when he received a letter on the subject from Robert Oppenheimer late in April 1944.

91

Navy Catching Waves in Hawaii | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Navy Catching Waves in Hawaii Navy Catching Waves in Hawaii Navy Catching Waves in Hawaii June 2, 2010 - 11:56am Addthis This experimental power-generating buoy installed off the coast of Oahu can produce enough energy to power 25 homes under optimal conditions. | Photo courtesy of Ocean Power Technologies, Inc. This experimental power-generating buoy installed off the coast of Oahu can produce enough energy to power 25 homes under optimal conditions. | Photo courtesy of Ocean Power Technologies, Inc. To a casual observer, the buoy off the shore of Marine Corps Base Hawaii (MCBH) might look like nothing more than a bright yellow spot in a blue ocean. But this isn't an ordinary buoy - it's a small electrical generator, creating renewable electricity as it bobs up and down on the waves. It's also a test project by the U.S. Navy to see whether a wider

92

EA-1876: Pennsylvania State Energy Program's Conergy Navy Yard Solar  

Broader source: Energy.gov (indexed) [DOE]

76: Pennsylvania State Energy Program's Conergy Navy Yard 76: Pennsylvania State Energy Program's Conergy Navy Yard Solar Project, Philadelphia, Pennsylvania EA-1876: Pennsylvania State Energy Program's Conergy Navy Yard Solar Project, Philadelphia, Pennsylvania Overview Conergy Projects, Inc. (Conergy) proposes to construct and operate a 1.251 megawatt (MW) solar photovoltaic (PV) facility at the former Navy Yard site in south Philadelphia in Pennsylvania's Philadelphia County to provide up to 1,596 MW hours of electricity per year, feeding directly into the distribution grid. After considering a number of alternative PV configurations and acquiring land via a lease to install the facility, the project proponents have identified a final proposed layout that meets the production criteria and minimizes the footprint of the system. The

93

Navy's Geothermal Program Office: Overview of Recovery Act (ARRA) Funded  

Open Energy Info (EERE)

Navy's Geothermal Program Office: Overview of Recovery Act (ARRA) Funded Navy's Geothermal Program Office: Overview of Recovery Act (ARRA) Funded Exploration in CA and NV and other Exploration Projects Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Navy's Geothermal Program Office: Overview of Recovery Act (ARRA) Funded Exploration in CA and NV and other Exploration Projects Details Activities (9) Areas (6) Regions (0) Abstract: The Navy's Geothermal Program Office (GPO) manages, explores for and supports the development of geothermal resources on Department of Defense (DoD) -managed lands. We are currently conducting exploration in 13 sites or regions on 6 military installations in Nevada and California. We also have tentative plans to expand our activities late this year or early next year into Utah as well as Guam and the Republic of Djibouti, northeast

94

DOE - Office of Legacy Management -- Navy Ammunition Depot - NJ 15  

Office of Legacy Management (LM)

Navy Ammunition Depot - NJ 15 Navy Ammunition Depot - NJ 15 FUSRAP Considered Sites Site: NAVY AMMUNITION DEPOT (NJ.15) Eliminated from further consideration under FUSRAP - Referred to DOD Designated Name: Not Designated Alternate Name: None Location: Earle, New Jersey NJ.15-1 Evaluation Year: 1987 NJ.15-2 Site Operations: Storage facility and disposal unit for drummed radioactive waste that was dumped at sea. NJ.15-1 Site Disposition: Eliminated - Referred to DOD NJ.15-2 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Radioactive Waste Materials NJ.15-2 Radiological Survey(s): None Indicated Site Status: Eliminated from further consideration under FUSRAP - Referred to DOD NJ.15-2 Also see Documents Related to NAVY AMMUNITION DEPOT NJ.15-1 - AEC Memorandum; Piccot to the Files; Subject: Visit to

95

U.S. Navy - Moanalua Terrace, Hawaii | Department of Energy  

Energy Savers [EERE]

The Navy chose direct (open-loop) active solar water heating systems with 80-gallon tanks containing an electric backup element. By the time the 516 homes in Phases III and IV...

96

Philadelphia Navy Yard: UESC Project with Philadelphia Gas Works  

Broader source: Energy.gov [DOE]

Presentationgiven at the Fall 2011 Federal Utility Partnership Working Group (FUPWG) meetingprovides information on the Philadelphia Navy Yard's utility energy services contract (UESC) project with Philadelphia Gas Works (PGW).

97

ONR using lightweight Protonex power for US Navy EOD team  

Science Journals Connector (OSTI)

In the US, the Office of Naval Research's (ONR) TechSolutions Program has developed a lightweight power system designed to cut the 50 lb (23 kg) of battery devices carried by the US Navy's explosive ordnance disposal (EOD) teams.

2011-01-01T23:59:59.000Z

98

Early dissipation and viscosity  

E-Print Network [OSTI]

We consider dissipative phenomena due to the relaxation of an initial anisotropic local pressure in the fireball created in relativistic heavy-ion collisions, both for the Bjorken boost-invariant case and for the azimuthally symmetric radial expansion with boost-invariance. The resulting increase of the entropy can be counterbalanced by a suitable retuning of the initial temperature. An increase of the transverse collective flow is observed. The influence of the shear viscosity on the longitudinal expansion is also studied. Viscosity reduces the cooling rate from the longitudinal work and counteracts the pressure gradients that accelerate the longitudinal flow.

Piotr Bozek

2008-04-24T23:59:59.000Z

99

Viscosity of Interfacial Water  

Science Journals Connector (OSTI)

The effective shear viscosity and frequency-dependent dynamic oscillatory shear spectra of water containing monovalent or divalent ions (ionic strength 25 mM), confined between mica crystals at 12 water molecules thickness, oscillated with twist angle with the period expected for the pseudohexagonal surface lattice. The effective viscosity varied by orders of magnitude as the twist angle was changed. Confinement appeared to imprint lateral spatial correlation on the ultrathin liquid, the more so the better the confining lattices were aligned, but the oft-proposed ice structure was not observed dynamically.

Yingxi Zhu and Steve Granick

2001-08-10T23:59:59.000Z

100

Viscosity of meson matter  

Science Journals Connector (OSTI)

We report a calculation of the shear viscosity in a relativistic multicomponent meson gas as a function of temperature and chemical potentials. We approximately solve the Uehling-Uhlenbeck transport equation of kinetic theory, appropriate for a boson gas, with relativistic kinematics. Since at low temperatures the gas can be taken as mostly composed of pions, with a fraction of kaons and etas, we explore the region where binary elastic collisions with at least one pion are the dominant scattering processes. Our input meson scattering phase shifts are fits to the experimental data obtained from chiral perturbation theory and the inverse amplitude method. Our results take the correct nonrelativistic limit (viscosity proportional to the square root of the temperature), show a viscosity of the order of the cube of the pion mass up to temperatures somewhat below that mass, and then a large increase due to kaons and etas. Our approximation may break down at even higher temperatures, where the viscosity follows a temperature power law with an exponent near 3.

Antonio Dobado and Felipe J. Llanes-Estrada

2004-06-29T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Viscosity and Lubrication  

Science Journals Connector (OSTI)

... oils in the tubes supplied. Further, each laboratory was invited to report the kinematic viscosity of the oils in absolute units at 20 C, according to the method used ... tubes may be selected from a set of apparently equally good tubes.

1945-06-16T23:59:59.000Z

102

Viscosity of Liquids  

Science Journals Connector (OSTI)

6 November 1952 research-article Viscosity of Liquids E. N. da C. Andrade The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. www.jstor.org

1952-01-01T23:59:59.000Z

103

Viscosity Measurements on Gaseous Propane  

Science Journals Connector (OSTI)

Viscosity Measurements on Gaseous Propane ... However, in that case, the viscosities will have to be re-evaluated too, which also requires the parameters of the wire oscillation, the logarithmic decrement and the frequency. ...

Jrg Wilhelm; Eckhard Vogel

2001-09-25T23:59:59.000Z

104

Viscosity-average molecular weight  

Science Journals Connector (OSTI)

n .... An averaged molecular weight for high polymers that relates most closely to measurements of dilute-solution viscosities ...

2007-01-01T23:59:59.000Z

105

Viscosity of Ring Polymer Melts  

Science Journals Connector (OSTI)

Viscosity of Ring Polymer Melts ... The ratio of the zero-shear viscosities of linear polymer melts ?0,linear to their ring counterparts ?0,ring at isofrictional conditions is discussed as a function of the number of entanglements Z. ... For this reason we have determined the viscosities by fitting the complex viscosity curves with different methods to obtain reliable estimates and error bars (see Supporting Information). ...

Rossana Pasquino; Thodoris C. Vasilakopoulos; Youn Cheol Jeong; Hyojoon Lee; Simon Rogers; George Sakellariou; Jrgen Allgaier; Atsushi Takano; Ana R. Brs; Taihyun Chang; Sebastian Gooen; Wim Pyckhout-Hintzen; Andreas Wischnewski; Nikos Hadjichristidis; Dieter Richter; Michael Rubinstein; Dimitris Vlassopoulos

2013-09-17T23:59:59.000Z

106

Hewlett and Duncan, Nuclear Navy, 1946-1962 | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Duncan, Nuclear Navy, 1946-1962 Duncan, Nuclear Navy, 1946-1962 Hewlett and Duncan, Nuclear Navy, 1946-1962 Richard G. Hewlett and Francis Duncan. Nuclear Navy: 1946-1962. Chicago: University of Chicago Press, 1974. 477 pp. History Office publication. Traces growth of U.S. Navy's nuclear fleet from earliest beginnings to 1962 when twenty-seven submarines and three surface ships were in operation. Focuses on Admiral Hyman G. Rickover as the driving force who convinced the Navy and the Atomic Energy Commission to support the project and who then shepherded it to success. HewlettandDuncanNuclearNavyComplete.pdf HewlettandDuncanNuclearNavyFiguresOnly.pdf More Documents & Publications Duncan - Rickover and the Nuclear Navy 2008_Transition_Program_Details_Book_Three.pdf Hewlett and Anderson - New World

107

Viscosity in spherically symmetric accretion  

Science Journals Connector (OSTI)

......October 2003 research-article Papers Viscosity in spherically symmetric accretion Arnab...Calcutta 700 032, India The influence of viscosity on the flow behaviour in spherically...at least for the transonic solution, viscosity acts as a mechanism that detracts from......

Arnab K. Ray

2003-10-01T23:59:59.000Z

108

Viscosity of silica  

Science Journals Connector (OSTI)

Experimental measurements of the viscosity of silica ( SiO 2 ) are critically examined; the best measurements show an activation energy of 515 kJ/mole above 1400 C and 720 kJ/mole below this temperature. The diffusion of silicon and oxygen in silica have temperature dependencies close to that of the high temperature viscosity. Mechanisms of viscous flow and diffusion of silicon and oxygen in silica are proposed that involve motion of SiO molecules. Viscous flow is proposed to result from the motion of line defects composed of SiO molecules At temperatures below 1400 C the fraction of SiO molecules in line defects changes with temperature. The relaxation of this fraction to an equilibrium value depends on the time. These proposed mechanisms are consistent with experimental measurements of silicaviscosity.

Robert H. Doremus

2002-01-01T23:59:59.000Z

109

DOE - Office of Legacy Management -- Philadelphia Navy Yard - PA 08  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Philadelphia Navy Yard - PA 08 Philadelphia Navy Yard - PA 08 FUSRAP Considered Sites Site: PHILADELPHIA NAVY YARD (PA.08) Eliminated from further consideration under FUSRAP - Referred to DOD Designated Name: Not Designated Alternate Name: None Location: Philadelphia , Pennsylvania PA.08-1 Evaluation Year: 1987 PA.08-1 Site Operations: Abelson's S-50 thermal diffusion pilot plant was built and operated on this facility in 1944 and large quantities of uranium hexafluoride were processed in 1945. PA.08-1 Site Disposition: Eliminated - Referred to DOD PA.08-1 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium oxide (hexaflouride) PA.08-1 Radiological Survey(s): None Indicated Site Status: Eliminated from further consideration under FUSRAP - Referred to DOD PA.08-1

110

United States Department Of The Navy Geothermal Exploration Leading To  

Open Energy Info (EERE)

Department Of The Navy Geothermal Exploration Leading To Department Of The Navy Geothermal Exploration Leading To Shallow And Intermediate-Deep Drilling At Hawthorne Ammunition Depot, Hawthorne, Nv Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: United States Department Of The Navy Geothermal Exploration Leading To Shallow And Intermediate-Deep Drilling At Hawthorne Ammunition Depot, Hawthorne, Nv Details Activities (6) Areas (1) Regions (0) Abstract: Results of geological, geochemical, and geophysical studies performed by personnel from the Geothermal Program Office (GPO) strongly suggested that there is a geothermal resource beneath lands controlled by the Hawthorne Ammunition Depot. The geothermal fluid is thought to be convecting meteoric water that is derived from precipitation within the

111

Nuclear Navy United States Atomic Energy Commission Historical Advisory  

Broader source: Energy.gov (indexed) [DOE]

Navy Navy United States Atomic Energy Commission Historical Advisory Committee Chairman, Alfred D. Chandler, Jr. Harvard University John T. Conway Consolidated Edison Company Lauchlin M. Currie Carmel, California A. Hunter Dupree Brown University Ernest R. May Harvard University Robert P. Multhauf Smithsonian Institution Nuclear Navy 1946-1962 Richard G. Hewlett and Francis Duncan The University of Chicago Press Chicago and London The University of Chicago Press Chicago 60637 The University of Chicago Press Ltd., London Published 1974 Printed in the United States of America International Standard Book Number: 0-226-33219-5 Library of Congress Catalog Card Number: 74-5726 RICHARD G. HEWLETT is chief historian of the U. S. Atomic Energy Commission. He is coauthor, with Oscar E.

112

Federal Energy Management Program: U.S. Navy - Moanalua Terrace, Hawaii  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

U.S. Navy - U.S. Navy - Moanalua Terrace, Hawaii to someone by E-mail Share Federal Energy Management Program: U.S. Navy - Moanalua Terrace, Hawaii on Facebook Tweet about Federal Energy Management Program: U.S. Navy - Moanalua Terrace, Hawaii on Twitter Bookmark Federal Energy Management Program: U.S. Navy - Moanalua Terrace, Hawaii on Google Bookmark Federal Energy Management Program: U.S. Navy - Moanalua Terrace, Hawaii on Delicious Rank Federal Energy Management Program: U.S. Navy - Moanalua Terrace, Hawaii on Digg Find More places to share Federal Energy Management Program: U.S. Navy - Moanalua Terrace, Hawaii on AddThis.com... Energy-Efficient Products Technology Deployment Renewable Energy Federal Requirements Renewable Resources & Technologies Project Planning & Implementation

113

Viscosity Destabilizes Sonoluminescing Bubbles  

Science Journals Connector (OSTI)

In single-bubble sonoluminescence (SBSL) microbubbles are trapped in a standing sound wave, typically in water or water-glycerol mixtures. However, in viscous liquids such as glycol, methylformamide, or sulphuric acid it is not possible to trap the bubble in a stable position. This is very peculiar as larger viscosity normally stabilizes the dynamics. Suslick and co-workers call this new mysterious state of SBSL moving-SBSL. We identify the history force (a force nonlocal in time) as the origin of this destabilization and show that the instability is parametric. A force balance model quantitatively accounts for the observed quasiperiodic bubble trajectories.

Ruediger Toegel; Stefan Luther; Detlef Lohse

2006-03-20T23:59:59.000Z

114

Critical exponent for viscosity  

Science Journals Connector (OSTI)

We have measured the critical exponent y characterizing the divergence of the viscosity ???T-Tc?-y for carbon dioxide and xenon. The values of y for both fluids fall within the range y=0.0410.001 and are consistent with the range y=0.0420.002 spanned by our earlier data for four binary liquid mixtures. This agreement is the strongest evidence that pure fluids and binary liquids are in the same dynamic universality class; however, the results for y are inconsistent with the recent theoretical value of 0.032.

Robert F. Berg and Michael R. Moldover

1990-12-15T23:59:59.000Z

115

Viscosity near phase transitions  

E-Print Network [OSTI]

Probably the most enticing observation in theoretical physics during the last decade was the discovery of the great amount of consequences obtained from the AdS/CFT conjecture put forward by Maldacena. In this work we review how this correspondence can be used to address hydrodynamic properties such as the viscosity of some strongly interacting systems. We also employ the Boltzmann equation for those systems closer to low-energy QCD, and argue that this kind of transport coefficients can be related to phase transitions, in particular the QGP/hadronic phase transition studied in heavy ion collisions.

Antonio Dobado; Felipe J. Llanes-Estrada; Juan M. Torres-Rincon

2010-09-30T23:59:59.000Z

116

Navy's Superlaser Is More Than a Weapon (Wired.com) | Jefferson...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

wired.comdangerroom201011navys-super-laser-wont-just-be-a-weapon Submitted: Wednesday, November 10, 2010...

117

Shear viscosity of nuclear matter  

E-Print Network [OSTI]

In this talk I report my recent study on the shear viscosity of neutron-rich nuclear matter from a relaxation time approach. An isospin- and momentum-dependent interaction is used in the study. Effects of density, temperature, and isospin asymmetry of nuclear matter on its shear viscosity have been discussed. Similar to the symmetry energy, the symmetry shear viscosity is defined and its density and temperature dependence are studied.

Jun Xu

2013-02-01T23:59:59.000Z

118

Navy Estimated Average Hourly Load Profile by Month (in MW)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Navy Estimated Average Hourly Load Profile by Month (in MW) MONTH HE1 HE2 HE3 HE4 HE5 HE6 HE7 HE8 HE9 HE10 HE11 HE12 HE13 HE14 HE15 HE16 HE17 HE18 HE19 HE20 HE21 HE22 HE23 HE24...

119

The fireship and its role in the Royal Navy  

E-Print Network [OSTI]

and could wreak havoc like no other vessel. After their use helped the English defeat the Spanish Armada in 1588, fireships became an important element of the Royal Navy and other European fleets and remained so until the Battle of Navarino in 1827...

Coggeshall, James Lowell

2012-06-07T23:59:59.000Z

120

The Navy's Program in Nanoscience and Nanotechnology A Look Ahead  

E-Print Network [OSTI]

The Navy's Program in Nanoscience and Nanotechnology ­ A Look Ahead Robert Kavetsky Office of Naval anticipated in the early 1980s the possible opportunities nanoscience and nanotechnology might bring leadership in the arenas of nanoscience and nanotechnology through its coordination and collaboration

Maryland at College Park, University of

Note: This page contains sample records for the topic "viscosity navy special" 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

A Day in the Navy May 19, 2012  

E-Print Network [OSTI]

, is operating in support of Navy Dive-Southern Partnership Station 2012. · USS Vicksburg (CG 69) conducts) conduct maritime security operations in the U.S. European Command AOR. · Sailors a operations. · The Carl Vinson Carrier Strike Group, comprised of USS Carl Vinson (CVN 70), USS Bunker Hill

122

The Viscosity of Carbon Dioxide  

Science Journals Connector (OSTI)

26 July 1912 research-article The Viscosity of Carbon Dioxide P. Phillips The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings...

1912-01-01T23:59:59.000Z

123

The Viscosity of Air  

Science Journals Connector (OSTI)

The viscosity of air has been remeasured with the rotating cylinder apparatus used by Day and Bleakney. All of the constants have been redetermined, and especial attention has been given to the corrections to the simple theory. The value obtained at 22C is ?=1.82430.0045 c.g.s. units. This raises the oil drop value of e to 4.796 e.s.u. It is shown in the appendix that a correction must be applied for the opening between the suspended cylinder and the guard cylinders, and also a correction must be applied for the moment of inertia of the air carried around by the cylinder when determining its moment of inertia. Neglect of these corrections has introduced some additional uncertainty into other work.

W. V. Houston

1937-10-01T23:59:59.000Z

124

Viscosity of Quantum Hall Fluids  

Science Journals Connector (OSTI)

The viscosity of quantum fluids with an energy gap at zero temperature is related to the adiabatic curvature on the space parametrizing flat background metrics. For quantum Hall fluids on two-dimensional tori, the quantum viscosity is computed. It turns out to be isotropic, constant, and proportional to the magnetic field strength.

J. E. Avron; R. Seiler; P. G. Zograf

1995-07-24T23:59:59.000Z

125

Upriver to Hue and Dong Ha: The U.S. Navy's War in I Corps, Vietnam 1967-1970  

E-Print Network [OSTI]

.S. Navy?s War in I Corps, Vietnam, 1967-1970. (December 2011) Jonathan Blackshear Chavanne, B.A., Baylor University; M.A., American Military University Chair of Advisory Committee: Dr. James Bradford The United States Navy?s involvement... .................................................................................................. 1 Bucklew and Vung Ro ................................................................... 7 ?More Different Types of Boats Than You Can Imagine? ............ 11 I Corps...

Chavanne, Jonathan Blackshear

2012-02-14T23:59:59.000Z

126

Viscosity, Specific (for Suspensions and Solutions)  

Science Journals Connector (OSTI)

n The viscosity of a composition (?) minus the viscosity of the liquid (? o), divided by the viscosity of the liquid phase. The symbol is...? sp. (Kamide, K., and dobashi, T.,...

Jan W. Gooch

2011-01-01T23:59:59.000Z

127

Anomalous - viscosity current drive  

DOE Patents [OSTI]

An apparatus and method for maintaining a steady-state current in a toroidal magnetically confined plasma. An electric current is generated in an edge region at or near the outermost good magnetic surface of the toroidal plasma. The edge current is generated in a direction parallel to the flow of current in the main plasma and such that its current density is greater than the average density of the main plasma current. The current flow in the edge region is maintained in a direction parallel to the main current for a period of one or two of its characteristic decay times. Current from the edge region will penetrate radially into the plasma and augment the main plasma current through the mechanism of anomalous viscosity. In another aspect of the invention, current flow driven between a cathode and an anode is used to establish a start-up plasma current. The plasma-current channel is magnetically detached from the electrodes, leaving a plasma magnetically insulated from contact with any material obstructions including the cathode and anode.

Stix, Thomas H. (Princeton, NJ); Ono, Masayuki (Princeton Junction, NJ)

1988-01-01T23:59:59.000Z

128

Viscosity, relative (for suspensions and solutions)  

Science Journals Connector (OSTI)

n. The ratio between the viscosity of a composition (?), divided by the viscosity of the liquid phase (? 0). It is designated as ? rel.

2007-01-01T23:59:59.000Z

129

Viscosity of Gaseous HFC245fa  

Science Journals Connector (OSTI)

Viscosity of Gaseous HFC245fa ... The uncertainty of the reported viscosities was estimated to be within 2.0 % with a coverage factor of k = 2. ...

Xiaopo Wang; Jiangtao Wu; Zhigang Liu

2009-07-10T23:59:59.000Z

130

Viscosity Bound and Causality Violation  

Science Journals Connector (OSTI)

In recent work we showed that, for a class of conformal field theories (CFT) with Gauss-Bonnet gravity dual, the shear viscosity to entropy density ratio, ?/s, could violate the conjectured Kovtun-Starinets-Son viscosity bound, ?/s?1/4?. In this Letter we argue, in the context of the same model, that tuning ?/s below (16/25)(1/4?) induces microcausality violation in the CFT, rendering the theory inconsistent. This is a concrete example in which inconsistency of a theory and a lower bound on viscosity are correlated, supporting the idea of a possible universal lower bound on ?/s for all consistent theories.

Mauro Brigante; Hong Liu; Robert C. Myers; Stephen Shenker; Sho Yaida

2008-05-15T23:59:59.000Z

131

Miscibility, solubility, and viscosity measurements for R-236EA with potential lubricants. Final report, October 1992-March 1995  

SciTech Connect (OSTI)

The report gives results of miscibility, solubility, and viscosity measurements of refrigerant R-236ea with three potential lubricants. The lubricants were a mineral oil, alkylbenzene, and polyol ester, each with a nominal viscosity of 68 cSt. The miscibility tests were performed in a test facility consisting of a series of miniature test cells in a constant-temperature bath. Critical solution temperatures obtained from the miscibility data are presented for each refrigerant/lubricant combination. In addition to miscibility data, both solubility and viscosity data were obtained for R-236ea and the most promising lubricant. For comparison purposes, data were also taken for the existing U.S. Navy shipboard chiller refrigerant and lubricant concentration, namely 4-114 and a naphthenic oil.

Zoz, S.C.; Pate, M.B.

1996-05-01T23:59:59.000Z

132

The Viscosity of Liquid Helium  

Science Journals Connector (OSTI)

2 September 1935 research-article The Viscosity of Liquid Helium J. O. Wilhelm A. D. Misener A. R. Clark The Royal Society is collaborating with JSTOR to digitize, preserve...

1935-01-01T23:59:59.000Z

133

The Viscosity of the Blood  

Science Journals Connector (OSTI)

24 October 1906 research-article The Viscosity of the Blood A. Du Pre Denning John H. Watson The Royal Society is collaborating with JSTOR to digitize, preserve, and extend...

1906-01-01T23:59:59.000Z

134

Viscosity Measurements in Molten Glass  

Science Journals Connector (OSTI)

The relations existing between viscosity determinations and the various stages of glass manufacture are pointed out and explained with reference to a typical viscosity?temperature curve. The rotation viscometer employed in making such determinations is described. Curves are shown for four representative types of glasses: a lead a lime a lead borosilicate and a hard borosilicate and the use to which such comparison curves may be put is indicated.

Howard R. Lillie

1932-01-01T23:59:59.000Z

135

Shear viscosity in hybrid stars  

Science Journals Connector (OSTI)

A study of the shear viscosity of hadrons and quarks in hybrid stars has been performed in the framework of the microscopic transport theory. The neutron-star structure has been determined employing the equation of state from the Brueckner theory with three-body force for the hadron phase, and the equation of state from the MIT bag model for the deconfined quark phase. The nucleon-nucleon cross sections in dense matter have been consistently calculated from the Brueckner G matrix, whereas for the quark-quark cross sections the perturbative QCD has been adopted. Despite that the quark contribution to the shear viscosity is quite small at low temperature, the transition to the deconfined phase makes the equation of state much softer with the result that the baryon viscosity turns out to be enhanced instead of reduced in hybrid stars. The damping time scale of r-modes due to the shear viscosity has been evaluated for several stable configurations of a hybrid star and compared with the neutron-star spin-down time scale induced by the emission gravitation radiation from the r-modes. The enhancement of the total viscosity makes the viscosity time scale comparable with the gravitation radiation one at low temperature.

D. Jaccarino; S. Plumari; V. Greco; U. Lombardo; A. B. Santra

2012-05-03T23:59:59.000Z

136

February 20, 2008: Navy shoots down NASA satellite | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

0, 2008: Navy shoots down NASA satellite 0, 2008: Navy shoots down NASA satellite February 20, 2008: Navy shoots down NASA satellite February 20, 2008: Navy shoots down NASA satellite February 20, 2008 The Navy successfully shoots down with a missile an errant satellite 133 miles above the earth. DOE's National Nuclear Security Administration (NNSA) assists the Navy using its Red Storm supercomputer, located at its Sandia National Laboratories. For about two months, NNSA diverted Red Storm and its technical experts and codes to the secret project to simulate, assess, and plan the complex mission. All 26,569 processors were used on Red Storm to perform complex simulations that allowed NNSA's technical experts to predict various details and possibilities. The work helped answer many questions, such as at what altitude to hit the satellite, how

137

U.S. Navy Launches First Nuclear Sub | National Nuclear Security  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Navy Launches First Nuclear Sub | National Nuclear Security Navy Launches First Nuclear Sub | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > U.S. Navy Launches First Nuclear Sub U.S. Navy Launches First Nuclear Sub January 21, 1954 Thames River (Groton, Conn.) U.S. Navy Launches First Nuclear Sub

138

ARPA-E 2011 Keynote: Ray Mabus, Secretary of the Navy | Department of  

Broader source: Energy.gov (indexed) [DOE]

Ray Mabus, Secretary of the Navy Ray Mabus, Secretary of the Navy ARPA-E 2011 Keynote: Ray Mabus, Secretary of the Navy Addthis Description Secretary of the Navy Ray Mabus addresses the 2nd annual ARPA-E Energy Innovation Summit on the Navy's fuel consumption and successful implementation of biofuels. Speakers Ray Mabus, Secretary of the Navy Duration 28:24 Topic Energy Policy Fuel Economy Energy Sources Emerging Technologies Credit Energy Department Video SECRETARY RAY MABUS: One of the things that has always amazed and gratified me is the talent of people who are willing to serve in government, willing to take less money, more trouble on behalf of their country. Every time we seem to need somebody, somebody good - you hope - steps forward. We have a great secretary of defense right now in Bob Gates, but we sure

139

Energy Department Joins Agriculture and Navy in the Fight for Clean Energy Transportation  

Office of Energy Efficiency and Renewable Energy (EERE)

Earlier this month, on September 19, 2014, Energy Department (DOE) Deputy Secretary Daniel Poneman joined Secretary Tom Vilsack of the Department of Agriculture (USDA), and Secretary Ray Mabus of the Department of Navy (Navy) to announce three projects that will produce renewable jet and diesel for the military. DOE, USDA, and Navy are working with private industry to produce advanced drop-in biofuels that can be used by the Department of Defense and the private transportation sector.

140

MPS213 - A Non-Thermal Plasma Application for the Royal Navy...  

Broader source: Energy.gov (indexed) [DOE]

Plasma Application for the Royal Navy - Part 1 2002 DEER Conference Presentation: Marine Propulsion Systems - Integrated Project Team 2002deerhughes1.pdf More Documents &...

Note: This page contains sample records for the topic "viscosity navy special" 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

An investigation of the effectiveness of solar power on Navy surface combatants .  

E-Print Network [OSTI]

??With energy consumption and environmental concerns taking the forefront in this nation, the United States Navy is playing its part by committing itself to reduce (more)

Kirkpatrick, Justin P.

2013-01-01T23:59:59.000Z

142

Passive-solar-retrofit study for the United States Navy  

SciTech Connect (OSTI)

A passive solar retrofit study has been conducted for the United States Navy at the Los Alamos National Laboratory. The purpose of the study was to determine the energy savings obtainable in concrete block buildings from several passive solar heating strategies. A procedure involving the use of test cell data and computer simulation was employed to assess the merits of six retrofit options. The six strategies selected were chosen on the basis of providing a series of options that will deliver increasing energy savings at the cost of correspondingly increased levels of commitment.

Wray, W.O.; Miles, C.R.

1981-01-01T23:59:59.000Z

143

Bulk viscosity in hybrid stars  

Science Journals Connector (OSTI)

We compute the bulk viscosity of a mixed quark-hadron phase. In the first scenario to be discussed, the mixed phase occurs at large densities and we assume that it is composed of a mixing of hyperonic matter and quarks in the Color Flavor Locked phase. In a second scenario, the mixed phase occurs at lower densities and it is composed of a mixing of nucleons and unpaired quark matter. We have also investigated the effect of a nonvanishing surface tension at the interface between hadronic and quark matter. In both scenarios, the bulk viscosity is large when the surface tension is absent, while the value of the viscosity reduces in the second scenario when a finite value for the surface tension is taken into account. In all cases, the r-mode instabilities of the corresponding hybrid star are suppressed.

A. Drago; A. Lavagno; G. Pagliara

2005-05-16T23:59:59.000Z

144

Suprathermal viscosity of dense matter  

SciTech Connect (OSTI)

Motivated by the existence of unstable modes of compact stars that eventually grow large, we study the bulk viscosity of dense matter, taking into account non-linear effects arising in the large amplitude regime, where the deviation {mu}{sub {Delta}} of the chemical potentials from chemical equilibrium fulfills {mu}{sub {Delta}} > or approx. T. We find that this supra-thermal bulk viscosity can provide a potential mechanism for saturating unstable modes in compact stars since the viscosity is strongly enhanced. Our study confirms previous results on strange quark matter and shows that the suprathermal enhancement is even stronger in the case of hadronic matter. We also comment on the competition of different weak channels and the presence of suprathermal effects in various color superconducting phases of dense quark matter.

Alford, Mark; Mahmoodifar, Simin; Schwenzer, Kai [Department of Physics, Washington University in St. Louis, Missouri, 63130 (United States)

2010-12-22T23:59:59.000Z

145

Viscosity Problems in Igneous Rocks  

Science Journals Connector (OSTI)

The earth's magma a siliceous melt which is believed to underlie the entire solid crust of the earth is in all probability a highly viscous liquid. Wherever molten lava is observed in motion either in craters of volcanoes (Kilauea Mauna Loa Hawaii) or as disastrous flows which descend volcanic mountains (Vesuvius Mount Aetna etc.) or in the vicinity of volcanic fissures (Laki Eldgja rift Iceland) it behaves like a liquid of appreciable viscosity; the degree of viscosity however varies depending on the proportion of admixed gases and water vapor and the chemical composition of the lava. Lavas rich in silica are highly viscous (rhyolite dacite) while those rich in iron and magnesium (basalt andesite) are more fluid. The viscosity of every lava flow increases until the melt slowly freezes because of the chilling effect of the surface temperatures on the earth.

Robert Balk

1932-01-01T23:59:59.000Z

146

Viscosity Bound and Causality Violation  

SciTech Connect (OSTI)

In recent work we showed that, for a class of conformal field theories (CFT) with Gauss-Bonnet gravity dual, the shear viscosity to entropy density ratio, {eta}/s, could violate the conjectured Kovtun-Starinets-Son viscosity bound, {eta}/s{>=}1/4{pi}. In this Letter we argue, in the context of the same model, that tuning {eta}/s below (16/25)(1/4{pi}) induces microcausality violation in the CFT, rendering the theory inconsistent. This is a concrete example in which inconsistency of a theory and a lower bound on viscosity are correlated, supporting the idea of a possible universal lower bound on {eta}/s for all consistent theories.

Brigante, Mauro; Liu, Hong [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Myers, Robert C. [Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5 (Canada); Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada); Shenker, Stephen; Yaida, Sho [Department of Physics, Stanford University, Stanford, California 94305 (United States)

2008-05-16T23:59:59.000Z

147

Viscosity and dissipation - early stages  

E-Print Network [OSTI]

A very early start up time of the hydrodynamic evolution is needed in order to reproduce observations from relativistic heavy-ion collisions experiments. At such early times the systems is still not locally equilibrated. Another source of deviations from local equilibrium is the viscosity of the fluid. We study these effects at very early times to obtain a dynamical prescription for the transition from an early 2-dimensional expansion to a nearly equilibrated 3-dimensional expansion at latter stages. The role of viscosity at latter stages of the evolution is also illustrated.

P. Bozek

2009-01-15T23:59:59.000Z

148

Shear Viscosity of Quark Matter  

E-Print Network [OSTI]

We consider the shear viscosity of a system of quarks and its ratio to the entropy density above the critical temperature for deconfinement. Both quantities are derived and computed for different modeling of the quark self-energy, also allowing for a temperature dependence of the effective mass and width. The behaviour of the viscosity and the entropy density is argued in terms of the strength of the coupling and of the main characteristics of the quark self-energy. A comparison with existing results is also discussed.

W. M. Alberico; S. Chiacchiera; H. Hansen; A. Molinari; M. Nardi

2007-07-30T23:59:59.000Z

149

Bulk Viscosity of Interacting Hadrons  

E-Print Network [OSTI]

We show that first approximations to the bulk viscosity $\\eta_v$ are expressible in terms of factors that depend on the sound speed $v_s$, the enthalpy, and the interaction (elastic and inelastic) cross section. The explicit dependence of $\\eta_v$ on the factor $(\\frac 13 - v_s^2)$ is demonstrated in the Chapman-Enskog approximation as well as the variational and relaxation time approaches. The interesting feature of bulk viscosity is that the dominant contributions at a given temperature arise from particles which are neither extremely nonrelativistic nor extremely relativistic. Numerical results for a model binary mixture are reported.

A. Wiranata; M. Prakash

2009-06-30T23:59:59.000Z

150

Charm contribution to bulk viscosity  

E-Print Network [OSTI]

In the range of temperatures reached in future heavy ion collision experiments, hadronic pair annihilations and creations of charm quarks may take place within the lifetime of the plasma. As a result, charm quarks may increase the bulk viscosity affecting the early stages of hydrodynamic expansion. Assuming thermalization, we estimate the charm contribution to bulk viscosity within the same effective kinetic theory framework in which the light parton contribution has been computed previously. The time scale at which this physics becomes relevant is related to the width of the transport peak associated with the trace anomaly correlator, and is found to be 600 MeV.

Laine, M

2014-01-01T23:59:59.000Z

151

Charm contribution to bulk viscosity  

E-Print Network [OSTI]

In the range of temperatures reached in future heavy ion collision experiments, hadronic pair annihilations and creations of charm quarks may take place within the lifetime of the plasma. As a result, charm quarks may increase the bulk viscosity affecting the early stages of hydrodynamic expansion. Assuming thermalization, we estimate the charm contribution to bulk viscosity within the same effective kinetic theory framework in which the light parton contribution has been computed previously. The time scale at which this physics becomes relevant is related to the width of the transport peak associated with the trace anomaly correlator, and is found to be 600 MeV.

M. Laine; Kiyoumars A. Sohrabi

2014-10-24T23:59:59.000Z

152

Updated: August 15, 2012 U.S. Navy Education Training Management Subspecialty (ETMS)  

E-Print Network [OSTI]

; nature of operations management. 2). Navy Education/Training Organization and Operation LEAD 8001Updated: August 15, 2012 1 U.S. Navy Education Training Management Subspecialty (ETMS, processes and procedures, organization structure, problems and issues, and types of personnel needed

Dasgupta, Dipankar

153

MarkSchrope The US Navy has admitted that its use of a  

E-Print Network [OSTI]

after US Navy ships using the high- intensity sonar had passed by. Six are known to have died around the whales' inner ears and inoneinstanceinthebrain. The Navy and the National Marine FisheriesYork-basedenvironmentalgroup. Butthereportsaysthatthehigh-intensity sonar may not pose a widespread threat to marine life. Such systems are commonly used

Latham, Peter

154

"The Fourth Dimension of Naval Tactics": The U.S. Navy and Public Relations, 1919-1939  

E-Print Network [OSTI]

Prior to 1917, the United States Navy only utilized public relations techniques during times of war or to attract recruits into naval service. Following World I, the Navy confronted several daunting problems, including the postwar demobilization...

Wadle, Ryan David

2012-07-16T23:59:59.000Z

155

Bulk viscosity and deflationary universes  

E-Print Network [OSTI]

We analyze the conditions that make possible the description of entropy generation in the new inflationary model by means of a nearequilibrium process. We show that there are situations in which the bulk viscosity cannot describe particle production during the coherent field oscillations phase.

J. A. S. Lima; R. Portugal; I. Waga

2007-08-24T23:59:59.000Z

156

The Viscosity of Compressed Gases  

Science Journals Connector (OSTI)

New data and a new theory for the viscosity of compressed gases are presented. Data for nitrogen, hydrogen and a mixture of these gases are given, in the calculation of which, the "end effects" are not neglected as has been done in the past. Previous viscosity data are of doubtful validity owing to neglect of this factor. The theory is based on an analogy between the kinetic pressure and viscosity of a gas and is derived using an equation of state of the Lorentz type. Allowance is made for the difference between the viscosity and compressibility covolumes. The theory is substantiated experimentally and further confirmed by the recalculation of other data on the variation of Reynolds' criterion with the pressure, which is here shown to be constant. The mixture data offer a direct opportunity of comparing the Lorentz and linear rules for the calculation of the covolume of a mixture from the covolumes of the components and such comparison indicates that the Lorentz rule is not to be preferred. The substantiation of the new theory is the first direct proof of the validity of the separate treatment of the kinetic and cohesive pressures in the equation of state.

James H. Boyd; Jr.

1930-05-15T23:59:59.000Z

157

Kinematic Viscosity of Helium II  

Science Journals Connector (OSTI)

By observing the time of formation of the meniscus in a cylindrical vessel suddenly given a rotation, it has been found possible to determine, directly, the kinematic viscosity of both He I and He II. At the angular velocities used (?15 rev/sec) it appears that, for He II, all the liquid rotates rather than the normal component alone.

R. J. Donnelly; G. V. Chester; R. H. Walmsley; C. T. Lane

1956-04-01T23:59:59.000Z

158

Anomalous-viscosity current drive  

DOE Patents [OSTI]

The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

Stix, T.H.; Ono, M.

1986-04-25T23:59:59.000Z

159

Navy Veteran Back to Work on the Smart Grid | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Navy Veteran Back to Work on the Smart Grid Navy Veteran Back to Work on the Smart Grid Navy Veteran Back to Work on the Smart Grid September 9, 2011 - 2:38pm Addthis Navy Veteran Gary Watts is a recent graduate of Power4Vets, a project funded through the Office of Electricity and Energy Reliability's Smart Grid Workforce Development Program to put veterans back to work in civilian energy jobs. | Photo courtesy of Power4Vets Navy Veteran Gary Watts is a recent graduate of Power4Vets, a project funded through the Office of Electricity and Energy Reliability's Smart Grid Workforce Development Program to put veterans back to work in civilian energy jobs. | Photo courtesy of Power4Vets April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs "Even though I had skills all along that people wanted, I didn't know

160

PNNL Helps the Navy Stay Cool and Conserve Fuel | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

PNNL Helps the Navy Stay Cool and Conserve Fuel PNNL Helps the Navy Stay Cool and Conserve Fuel PNNL Helps the Navy Stay Cool and Conserve Fuel July 30, 2013 - 3:33pm Addthis As a Laboratory Fellow at the Energy Department's Pacific Northwest National Laboratory, Pete McGrail and his team are working to develop a more efficient adsorption chiller that could help the Navy cut its fuel costs. | Photo courtesy of Pacific Northwest National Laboratory. As a Laboratory Fellow at the Energy Department's Pacific Northwest National Laboratory, Pete McGrail and his team are working to develop a more efficient adsorption chiller that could help the Navy cut its fuel costs. | Photo courtesy of Pacific Northwest National Laboratory. Andrew Gumbiner Contractor, Advanced Research Projects Agency-Energy. What are the key facts?

Note: This page contains sample records for the topic "viscosity navy special" 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

NREL: News Feature - NREL Teams with Navy to Cut Energy Use  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NREL Teams with Navy to Cut Energy Use NREL Teams with Navy to Cut Energy Use April 19, 2013 Photo of the USS O'Kane (DDG 77) returning to U.S. Joint Base Pearl Harbor-Hickam. Enlarge image Guided-missile destroyer USS O'Kane returns to Joint Base Pearl Harbor-Hickam after a seven-month deployment. The Navy and NREL have teamed up to find solutions to meet the Navy's ambitious energy goals, including working with the Naval Facilities Engineering Command in Hawaii and Guam to install and test advanced building efficiency, HVAC (heating, ventilation, and air conditioning), and renewables and facility integration technologies. Credit: Photo by U.S. Navy Mass Communication Specialist Seaman Diana Quinlan Check off a list in your head of the government organizations that play a role in the security of the United States. The Department of Defense (DoD)

162

Navy Veteran Back to Work on the Smart Grid | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Navy Veteran Back to Work on the Smart Grid Navy Veteran Back to Work on the Smart Grid Navy Veteran Back to Work on the Smart Grid September 9, 2011 - 2:38pm Addthis Navy Veteran Gary Watts is a recent graduate of Power4Vets, a project funded through the Office of Electricity and Energy Reliability's Smart Grid Workforce Development Program to put veterans back to work in civilian energy jobs. | Photo courtesy of Power4Vets Navy Veteran Gary Watts is a recent graduate of Power4Vets, a project funded through the Office of Electricity and Energy Reliability's Smart Grid Workforce Development Program to put veterans back to work in civilian energy jobs. | Photo courtesy of Power4Vets April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs "Even though I had skills all along that people wanted, I didn't know

163

11 Navy sites to save $871,000 yearly | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

1 Navy sites to save $871,000 yearly 1 Navy sites to save $871,000 yearly 11 Navy sites to save $871,000 yearly July 13, 2010 - 6:12pm Addthis Joshua DeLung What does this project do? The solar energy systems are expected to generate 9,399 MWh of clean, renewable energy during first full year after construction. The solar and roofing upgrades that will save the Navy $871,935 annually. The process will involve hundreds workers across the projects. 32 buildings in Florida, Mississippi and Texas to receive energy upgrades Up to 275 subcontractors to work on roofing and solar projects 9,399 MWh of energy expected to be generated in first full year after construction The U.S. Navy's Naval Facilities Engineering Command (NAVFAC) Southeast - based in Jacksonville, Fla. - is using $69.3 million in funding from the

164

Viscosity and Density of Reference Fluid.  

E-Print Network [OSTI]

??The viscosity and density of bis(8-methylnonyl) benzene-1,2- dicarboxylate {diisodecyl phthalate (DIDP)}, with a nominal viscosity at T = 298 K and p = 0.1 MPa (more)

Almotari, Masaed Moti M

2006-01-01T23:59:59.000Z

165

Viscosity Increments of Non-Ionized Molecules  

Science Journals Connector (OSTI)

... DISTINCTIVE property of colloidally dispersed substances as opposed to crystalloids is their relatively higher intrinsic viscosity or ... or viscosity increment. The reason for this is that the medium in which the macromolecular particles ...

ALFRED POLSON

1960-08-06T23:59:59.000Z

166

Shear viscosity of the quark matter  

E-Print Network [OSTI]

We discuss shear viscosity of the quark matter by using Kubo formula. The shear viscosity is calculated in the framework of the quasi-particle RPA for the Nambu-Jona-Lasinio model. We obtain a formula that the shear viscosity is expressed by the quadratic form of the quark spectral function in the chiral symmetric phase. The magnitude of the shear viscosity is discussed assuming the Breit-Wigner type for the spectral function.

Masaharu Iwasaki; Hiromasa Ohnishi; Takahiko Fukutome

2007-03-26T23:59:59.000Z

167

Ocean viscosity and climate M. Jochum,1  

E-Print Network [OSTI]

Ocean viscosity and climate M. Jochum,1 G. Danabasoglu,1 M. Holland,1 Y.-O. Kwon,1 and W. G. Large1] The impacts of parameterized lateral ocean viscosity on climate are explored using three 120-year integrations of a fully coupled climate model. Reducing viscosity leads to a generally improved ocean circulation

Jochum, Markus

168

VISCOSITY IN ACCRETION DISKS PAUL J. WIITA  

E-Print Network [OSTI]

VISCOSITY IN ACCRETION DISKS PAUL J. WIITA Department of Physics & Astronomy, Georgia State University Atlanta, Georgia, USA Abstract. Various proposals and prescriptions for the viscosity in accretion a solution to this difficult problem. 1. Introduction The nature of the viscosity within accretion disks

Wiita, Paul J.

169

Viscosity profile of the lower mantle  

Science Journals Connector (OSTI)

......October 1985 research-article Articles Viscosity profile of the lower mantle Kirk Ellsworth...determine the variation of effective viscosity across the lower mantle from models of...consistent with recent estimates of mantle viscosity from post-glacial rebound and true......

Kirk Ellsworth; Gerald Schubert; Charles G. Sammis

1985-10-01T23:59:59.000Z

170

Viscosity and the Structure of Molten Silicates  

Science Journals Connector (OSTI)

7 December 1954 research-article Viscosity and the Structure of Molten Silicates...devised which enables measurements of the viscosity of liquids to be made at maximum temperatures...instrument has been applied to measure the viscosity of the system CaO-SiO over the composition...

1954-01-01T23:59:59.000Z

171

Viscosity Measurement G.E. Leblanc  

E-Print Network [OSTI]

30 Viscosity Measurement G.E. Leblanc McMaster University R.A. Secco The University of Western Ontario 30.1 Shear Viscosity ............................................................. 30-l Newtonian and Non-Newtonian Fluids l Dimensions and Units of Viscosity l Viscometer Types l Capillary M. Kostic

Kostic, Milivoje M.

172

Project Title: VIscosity Reduction Date:  

Broader source: Energy.gov (indexed) [DOE]

4t 3 4t 3 l I Project lnfonnatlon Project Title: VIscosity Reduction Date: 11-22-2010 DOE Code: 673()-()20-51141 Contractor Code: 8067-778 Project Lead: Frank Ingham Project Overview 1. The purpose of the project is to test a tool that temporarily reduces the viscosity of oil which allows it to be 1. Brief project description ~nclude pumped through pipelines easier. The test will require about 4 miles of line to pump the oil through after anything that could impact the treatment (hence the need to connect the 31oops together), a holding volume for recovery, then repeat. environmenJ] There will be tanks to hold the original volume, tanks to receive the volume after treatment and pumping 2. Legal location through the line, possible transfer between tanks, transport (trucking) of the oil to the site (by the COC) and

173

Viscosity of Liquid He II  

Science Journals Connector (OSTI)

The viscosity of liquid He4 has been measured between 1.10K and the lambda point. A new type of viscometer was used, based on the damping of the transverse vibrations of a fine wire stretched between two rigid supports. The simplicity of the hydrodynamic problem and the low nuisance damping of the wire make this technique particularly appropriate for the measurement of small viscosities. The smoothed data are presented and found to be in good agreement with the latest rotating cylinder viscometer results. In different experimental runs the vibration frequency was varied by a factor of seven and the wire diameter by a factor of three. There was no evidence of systematic trend due to mean free-path effects or geometrical corrections.

J. T. Tough; W. D. McCormick; J. G. Dash

1963-12-15T23:59:59.000Z

174

Development of an energy-use estimation methodology for the revised Navy Manual MO-303  

SciTech Connect (OSTI)

The U.S. Navy commissioned Pacific Northwest Laboratory (PNL) to revise and/or update the Navy Utilities Targets Manual, NAVFAC MO-303 (U.S. Navy 1972b). The purpose of the project was to produce a current, applicable, and easy-to-use version of the manual for use by energy and facility engineers and staff at all Navy Public Works Centers (PWCs), Public Works Departments (PWDs), Engineering Field Divisions (EFDs), and other related organizations. The revision of the MO-303 manual involved developing a methodology for estimating energy consumption in buildings and ships. This methodology can account for, and equitably allocate, energy consumption within Navy installations. The analyses used to develop this methodology included developing end-use intensities (EUIs) from a vast collection of Navy base metering and billing data. A statistical analysis of the metering data, weather data, and building energy-use characteristics was used to develop appropriate EUI values for use at all Navy bases. A complete Navy base energy reconciliation process was also created for use in allocating all known energy consumption. Initial attempts to use total Navy base consumption values did not produce usable results. A parallel effort using individual building consumption data provided an estimating method that incorporated weather effects. This method produced a set of building EUI values and weather adjustments for use in estimating building energy use. A method of reconciling total site energy consumption was developed based on a {open_quotes}zero-sum{close_quotes} principle. This method provides a way to account for all energy use and apportion part or all of it to buildings and other energy uses when actual consumption is not known. The entire text of the manual was also revised to present a more easily read understood and usable document.

Richman, E.E.; Keller, J.M.; Wood, A.G.; Dittmer, A.L.

1995-01-01T23:59:59.000Z

175

Viscosity measurements in dense microemulsions  

Science Journals Connector (OSTI)

We report the results of a measurement of the shear viscosity as a function of the temperature and of the water volume fraction in a three-component sodium di(2-ethylhexyl)sulfosuccinate-decane-water microemulsion. The explored concentration range is 0???0.73 and the packing fraction of the water-in-oil spherical droplets has been changed in order to obtain a very dense glass-forming liquid. Well-defined maxima in the relative viscosity have been observed at different concentrations and the corresponding temperature values decrease with increasing ?. The data are discussed considering the system as a colloidal one in which aggregation phenomena are present. In such a way, on the basis of a two-fluid model, we can consider two different contributions to the viscosity. One is directly connected to the repulsive interaction potential, while the second one is directly connected to the attractive interaction that contributes indirectly, through the formation of aggregates. The results are compatible with those previously obtained by light-scattering measurements that gives clear evidence of the presence of a large structural order at the glass transition.

D. Majolino; F. Mallamace; S. Venuto; N. Micali

1990-12-15T23:59:59.000Z

176

Hall viscosity from gauge/gravity duality  

E-Print Network [OSTI]

In (2+1)-dimensional systems with broken parity, there exists yet another transport coefficient, appearing at the same order as the shear viscosity in the hydrodynamic derivative expansion. In condensed matter physics, it is referred to as "Hall viscosity". We consider a simple holographic realization of a (2+1)-dimensional isotropic fluid with broken spatial parity. Using techniques of fluid/gravity correspondence, we uncover that the holographic fluid possesses a nonzero Hall viscosity, whose value only depends on the near-horizon region of the background. We also write down a Kubo's formula for the Hall viscosity. We confirm our results by directly computing the Hall viscosity using the formula.

Omid Saremi; Dam Thanh Son

2011-03-24T23:59:59.000Z

177

Bulk viscosity-driven suppression of shear viscosity effects on the flow harmonics at RHIC  

E-Print Network [OSTI]

The interplay between shear and bulk viscosities on the flow harmonics, $v_n$'s, at RHIC is investigated using the newly developed relativistic 2+1 hydrodynamical code v-USPhydro that includes bulk and shear viscosity effects both in the hydrodynamic evolution and also at freeze-out. While shear viscosity is known to attenuate the flow harmonics, we find that the inclusion of bulk viscosity decreases the shear viscosity-induced suppression of the flow harmonics bringing them closer to their values in ideal hydrodynamical calculations. Depending on the value of the bulk viscosity to entropy density ratio, $\\zeta/s$, in the quark-gluon plasma, the bulk viscosity-driven suppression of shear viscosity effects on the flow harmonics may require a re-evaluation of the previous estimates of the shear viscosity to entropy density ratio, $\\eta/s$, of the quark-gluon plasma previously extracted by comparing hydrodynamic calculations to heavy ion data.

J. Noronha-Hostler; J. Noronha; F. Grassi

2014-06-12T23:59:59.000Z

178

U.S. Navy - San Clemente Island, California | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

San Clemente Island, California San Clemente Island, California U.S. Navy - San Clemente Island, California October 7, 2013 - 10:12am Addthis Photo of Wind Turbine on San Clemente Island, California San Clemente Island is one of the Channel Islands off the southern coast of California. The U.S. Navy owns the 21-mile long island, making it one of the Navy's largest real estate assets. The Navy uses the island for research, development, testing, evaluation, and training. Originally, the electrical needs of the island were provided by four diesel generators. In 1998 two wind turbines were installed through a joint project of the Department of Defense, the Department of Energy, and the Environmental Protection Agency working through the Federal Energy Management Program (FEMP). A third turbine was installed in 1999, allowing

179

NREL: Department of Defense Energy Programs - NREL Helps the Navy with  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NREL Helps the Navy with Renewable Energy Site Assessment at Indian Ocean NREL Helps the Navy with Renewable Energy Site Assessment at Indian Ocean Base December 20, 2013 Reaching Diego Garcia, a remote island in the middle of the Indian Ocean, is not easy, but recently NREL's Otto VanGeet and Owen Roberts embarked on the long journey there. As part of an integrated Navy and NREL team, their goal was to help the Navy reduce costs by integrating wind and solar power with fossil fuel generators. NREL staff, along with members of the Naval Facilities Engineering Command, conducted a net-zero renewable energy site assessment in November at the atoll which stretches about 40 miles in a thin U-shape. The island's renewable energy potential-along with the possibilities for energy systems integration-really excited the team. "Because of its locale, the base is all diesel-powered," VanGeet said.

180

Fossil Energy-Developed Fuel Cell Technology Being Adapted by Navy for  

Broader source: Energy.gov (indexed) [DOE]

Energy-Developed Fuel Cell Technology Being Adapted by Navy Energy-Developed Fuel Cell Technology Being Adapted by Navy for Advanced Unmanned Undersea Vehicles Fossil Energy-Developed Fuel Cell Technology Being Adapted by Navy for Advanced Unmanned Undersea Vehicles January 31, 2013 - 12:00pm Addthis An unmanned undersea vehicle (UUV) being deployed during a U.S. Office of Naval Research demonstration near Panama City. Solid oxide fuel cell technology being developed by the Office of Fossil Energy for coal-fueled central power generation is being adapted to power UUVs. U.S. Navy photo by Mr. John F. Williams/Released. An unmanned undersea vehicle (UUV) being deployed during a U.S. Office of Naval Research demonstration near Panama City. Solid oxide fuel cell technology being developed by the Office of Fossil Energy for coal-fueled

Note: This page contains sample records for the topic "viscosity navy special" 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

DOE - Office of Legacy Management -- Mare Island Navy Yard - CA 0-01  

Office of Legacy Management (LM)

Mare Island Navy Yard - CA 0-01 Mare Island Navy Yard - CA 0-01 FUSRAP Considered Sites Site: MARE ISLAND NAVY YARD (CA.0-01 ) Eliminated from consideration under FUSRAP - Referred to DoD Designated Name: Not Designated Alternate Name: None Location: Mare Island , California CA.0-01-2 Evaluation Year: 1989 CA.0-01-1 Site Operations: Naval yard and shipping station. CA.0-01-2 Site Disposition: Eliminated - Referred to DOD CA.0-01-1 CA.0-01-2 Radioactive Materials Handled: None Indicated Primary Radioactive Materials Handled: None CA.0-01-2 Radiological Survey(s): None Indicated Site Status: Eliminated from consideration under FUSRAP - Referred to DoD CA.0-01-2 Also see Documents Related to MARE ISLAND NAVY YARD CA.0-01-1 - DOE Memorandum; Wallo to Carwell; Subject: List of

182

NREL: Buildings Research - NREL Helps the Navy with Renewable Energy Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NREL Helps the Navy with Renewable Energy Site Assessment at Indian Ocean NREL Helps the Navy with Renewable Energy Site Assessment at Indian Ocean Base December 20, 2013 Reaching Diego Garcia, a remote island in the middle of the Indian Ocean, is not easy, but recently NREL's Otto VanGeet and Owen Roberts embarked on the long journey there. As part of an integrated Navy and NREL team, their goal was to help the Navy reduce costs by integrating wind and solar power with fossil fuel generators. NREL staff, along with members of the Naval Facilities Engineering Command, conducted a net-zero renewable energy site assessment in November at the atoll which stretches about 40 miles in a thin U-shape. The island's renewable energy potential-along with the possibilities for energy systems integration-really excited the team. "Because of its locale, the base is all diesel-powered," VanGeet said.

183

Proposals Due for New California Renewable Energy Products on Behalf of the Navy  

Broader source: Energy.gov [DOE]

Western Area Power Administration (Western) has issued a request for proposal (RFP) for new California renewable energy products on behalf of the U.S. Department of the Navy to supply various loads...

184

A Seasonal Storage Solar Heating System for the Charlestown, Boston Navy Yard National Historic Park  

Science Journals Connector (OSTI)

This paper concerns the design and analysis of a solar energy system using seasonal heat storage for ... Park in the Charlestown Navy Yard, Boston, Massachusetts. The system uses two existing underground concrete...

D. S. Breger; A. I. Michaels

1984-01-01T23:59:59.000Z

185

Implementation of a Stochastic Eddy-Diffusivity/Mass-Flux Parameterization into the Navy Global Environmental Model  

Science Journals Connector (OSTI)

A unified boundary layer and shallow convection parameterization based on a stochastic eddy-diffusivity/mass-flux (EDMF) approach is implemented and tested in the Navy Global Environmental Model (NAVGEM). The primary goals of this work are to ...

Kay Suelj; Timothy F. Hogan; Joo Teixeira

2014-12-01T23:59:59.000Z

186

Cost prediction via quantitative analysis of complexity in U.S. Navy shipbuilding  

E-Print Network [OSTI]

As the sophistication and technology of ships increases, U.S. Navy shipbuilding must be an effective and cost-efficient acquirer of technology-dense one-of-a-kind ships all while meeting significant cost and schedule ...

Dobson, Aaron T. (Aaron Travis)

2014-01-01T23:59:59.000Z

187

California: Advanced 'Drop-In' Biofuels Power the Navy's Green Strike Group  

Office of Energy Efficiency and Renewable Energy (EERE)

EERE's investment allowed Solezyme to increase its algal oil production by a factor of 10, leading to the U.S. Navy's purchase of 450,000 gallons of "drop-in" jet fuel.

188

USDA, Departments of Energy and Navy Seek Input from Industry to Advance  

Broader source: Energy.gov (indexed) [DOE]

USDA, Departments of Energy and Navy Seek Input from Industry to USDA, Departments of Energy and Navy Seek Input from Industry to Advance Biofuels for Military and Commercial Transportation USDA, Departments of Energy and Navy Seek Input from Industry to Advance Biofuels for Military and Commercial Transportation August 30, 2011 - 12:23pm Addthis WASHINGTON, Aug. 30, 2011 -Secretary of Agriculture Tom Vilsack, Secretary of Energy Steven Chu, and Secretary of the Navy Ray Mabus today announced the next step in the creation of a public-private partnership to develop drop-in advanced biofuels. The Secretaries issued a Request for Information (RFI) laying out the Administration's goals, assumptions, and tools and requesting from industry specific ideas for how to leverage private capital markets to establish a commercially viable drop-in biofuels

189

Holographic Viscosity of Fundamental Matter  

E-Print Network [OSTI]

A holographic dual of a finite-temperature SU(N_c) gauge theory with a small number of flavours N_f viscosity to entropy ratio in these theories saturates the conjectured universal bound eta/s >= 1/4\\pi. The contribution of the fundamental matter eta_fund is therefore enhanced at strong 't Hooft coupling lambda; for example, eta_fund ~ lambda N_c N_f T^3 in four dimensions. Other transport coefficients are analogously enhanced. These results hold with or without a baryon number chemical potential.

David Mateos; Robert C. Myers; Rowan M. Thomson

2006-10-16T23:59:59.000Z

190

Effective viscosity of microswimmer suspensions  

E-Print Network [OSTI]

The measurement of a quantitative and macroscopic parameter to estimate the global motility of a large population of swimming biological cells is a challenge Experiments on the rheology of active suspensions have been performed. Effective viscosity of sheared suspensions of live unicellular motile micro-algae (\\textit{Chlamydomonas Reinhardtii}) is far greater than for suspensions containing the same volume fraction of dead cells and suspensions show shear thinning behaviour. We relate these macroscopic measurements to the orientation of individual swimming cells under flow and discuss our results in the light of several existing models.

Salima Rafai; Levan Jibuti; Philippe Peyla

2009-09-23T23:59:59.000Z

191

Viscosity of a nucleonic fluid  

E-Print Network [OSTI]

The viscosity of nucleonic matter is studied both classically and in a quantum mechanical description. The collisions between particles are modeled as hard sphere scattering as a baseline for comparison and as scattering from an attractive square well potential. Properties associated with the unitary limit are developed which are shown to be approximately realized for a system of neutrons. The issue of near perfect fluid behavior of neutron matter is remarked on. Using some results from hard sphere molecular dynamics studies near perfect fluid behavior is discussed further.

Aram Z. Mekjian

2012-03-21T23:59:59.000Z

192

Viscosity Effects in Acoustic Inductances  

Science Journals Connector (OSTI)

The linear acousticinductance and resistance of narrow circular tubes short compared to a wavelength have usually been represented by limiting formulas valid either for very low frequencies (viscous flow) or for relatively high frequencies (pistonlike displacement). Crandall's text gives a general mathematical development with particular stress on resistance but variation of inductance with frequency and viscosity has not been discussed generally nor has numerical reduction of mathematical results been generally available. The present paper describes quantitatively the dependence of inductance and resistance upon the general parameter radius times square root of the quantity density times frequency divided by viscosity. With increase of this parameter resistance increases while inductance diminishes from the static value to the limiting high frequency value. Experimental checks are made to ascertain whether resistance values are strongly affected by flow?transition end?effects found in hydraulics. Impedance?tube studies are made of five tube diameters from 0.0187 to 0.750 in. at 50 to 167 c/sec. Length/diameter is approximately 10 to render inductance end?corrections relatively small. Acoustic pressures are reduced until linear behavior appears. Measured resistance is generally within five percent of calculation as resistance increases to twice the static value. Measured inductance generally agrees with calculation within limits of the end?correction over the range of significant variation.

A. W. Nolle

1951-01-01T23:59:59.000Z

193

Viscosity of surfactant stabilized emulsions  

Science Journals Connector (OSTI)

A new scaling parameter for the viscosity of surfactant stabilized emulsions is proposed. We suggest that the attractive force between emulsiondroplets is caused by the small surfactantmicelles in the continuous phase of an emulsion. The new scaling parameter will be referred to as the depletion flow number Fl d =4?? s ??a 2 a m /kT? m and is defined as the ratio between the viscous energy needed to separate the droplets and the depletion energy that opposes this separation. Here ? s a a m and ? m are the solventviscosity dispersed phase droplet radius micelle radius and micelle volume fraction respectively. Fl d is of the order of unity at the onset of shear thinning and is capable of explaining all previously observed effects of drop size solventviscosity and surfactant concentration. With master curves which are obtained by using Fl d as the running parameter a relatively simple empirical model is constructed which can reproduce the viscosity curves of many previously reported in the literature.

K. M. B. Jansen; W. G. M. Agterof; J. Mellema

2001-01-01T23:59:59.000Z

194

Bulk viscosity of a pion gas  

Science Journals Connector (OSTI)

We compute the bulk viscosity of a gas of pions at temperatures below the QCD crossover temperature, for the physical value of m?, to lowest order in chiral perturbation theory. Bulk viscosity is controlled by number-changing processes which become exponentially slow at low temperatures when the pions become exponentially dilute, leading to an exponentially large bulk viscosity ?~(F08/m?5)exp(2m?/T), where F0?93?MeV is the pion decay constant.

Egang Lu and Guy D. Moore

2011-04-07T23:59:59.000Z

195

Viscosity of High Energy Nuclear Fluids  

E-Print Network [OSTI]

Relativistic high energy heavy ion collision cross sections have been interpreted in terms of almost ideal liquid droplets of nuclear matter. The experimental low viscosity of these nuclear fluids have been of considerable recent quantum chromodynamic interest. The viscosity is here discussed in terms of the string fragmentation models wherein the temperature dependence of the nuclear fluid viscosity obeys the Vogel-Fulcher-Tammann law.

V. Parihar; A. Widom; D. Drosdoff; Y. N. Srivastava

2007-03-15T23:59:59.000Z

196

Hall viscosity, spin density, and torsion  

E-Print Network [OSTI]

We investigate the relationship between Hall viscosity, spin density and response to geometric torsion. For the most general effective action for relativistic gapped systems, the presence of non-universal terms implies that there is no relationship between torsion response and Hall viscosity. We also consider free relativistic and non-relativistic microscopic actions and again verify the existence of analogous non-universal couplings. Explicit examples demonstrate that torsion response is unrelated to both Hall viscosity and spin density. We also argue that relativistic gapped theories must have vanishing Hall viscosity in Lorentz invariant vacuums.

Geracie, Michael; Roberts, Matthew M

2014-01-01T23:59:59.000Z

197

Hyperon bulk viscosity in strong magnetic fields  

SciTech Connect (OSTI)

We study the bulk viscosity of neutron star matter including {lambda} hyperons in the presence of quantizing magnetic fields. Relaxation time and bulk viscosity due to both the nonleptonic weak process involving {lambda} hyperons and direct Urca processes are calculated here. In the presence of a strong magnetic field of 10{sup 17} G, the hyperon bulk viscosity coefficient is reduced, whereas bulk viscosity coefficients due to direct Urca processes are enhanced compared with their field free cases when many Landau levels are populated by protons, electrons, and muons.

Sinha, Monika; Bandyopadhyay, Debades [Theory Division and Centre for Astroparticle Physics, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)

2009-06-15T23:59:59.000Z

198

Bulk viscosity in kaon condensed matter  

E-Print Network [OSTI]

We investigate the effect of $K^-$ condensed matter on bulk viscosity and r-mode instability in neutron stars. The bulk viscosity coefficient due to the non-leptonic process $n \\rightleftharpoons p + K^-$ is studied here. In this connection, equations of state are constructed within the framework of relativistic field theoretical models where nucleon-nucleon and kaon-nucleon interactions are mediated by the exchange of scalar and vector mesons. We find that the bulk viscosity coefficient due to the non-leptonic weak process in the condensate is suppressed by several orders of magnitude. Consequently, kaon bulk viscosity may not damp the r-mode instability in neutron stars.

Debarati Chatterjee; Debades Bandyopadhyay

2007-02-09T23:59:59.000Z

199

Viscosity of liquid Fe at high pressure  

Science Journals Connector (OSTI)

Synchrotron x-ray radiography has been used to measure the viscosity of pure liquid Fe at high pressure and temperature in a large volume press. A probe sphere rising through liquid Fe at high pressure and temperature is imaged, in situ, allowing for the derivation of sample viscosity through a modified form of Stokes equation. The effect of pressure on viscosity is fit by the semi empirical framework for transport coefficients in liquid metals, providing experimental verification of constant viscosity at the pressure-dependent melting temperature of liquid Fe where no change in liquid structure occurs.

Michael D. Rutter; Richard A. Secco; Hongjian Liu; Takeyuki Uchida; Mark L. Rivers; Stephen R. Sutton; Yanbin Wang

2002-08-14T23:59:59.000Z

200

Viscosity of Liquid Sodium and Potassium  

Science Journals Connector (OSTI)

2 November 1936 research-article Viscosity of Liquid Sodium and Potassium Y. S. Chiong The Royal Society is collaborating with JSTOR to digitize, preserve, and extend...

1936-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Viscosity of Di-isodecylphthalate: A Potential Standard of Moderate Viscosity  

Science Journals Connector (OSTI)

The paper reports our first measurements of the viscosity of di-isodecylphthalate, which is a candidate ... . At the same time it has a viscosity, which, at room temperature, is around ... 1.5%, following calibr...

F. J. P. Caetano; J. M. N. A. Fareleira

2004-09-01T23:59:59.000Z

202

An Empirical Viscosity Model for Coal Slags  

SciTech Connect (OSTI)

Slags of low viscosity readily penetrate the refractory lining in slagging gasifiers, causing rapid and severe corrosion called spalling. In addition, a low-viscosity slag that flows down the gasifier wall forms a relatively thin layer of slag on the refractory surface, allowing the corrosive gases in the gasifier to participate in the chemical reactions between the refractory and the slag. In contrast, a slag viscosity of <25 Pas at 1400C is necessary to minimize the possibility of plugging the slag tap. There is a need to predict and optimize slag viscosity so slagging gasifiers can operate continuously at temperatures ranging from 1300 to 1650C. The approach adopted in this work was to statistically design and prepare simulated slags, measure the viscosity as a function of temperature, and develop a model to predict slag viscosity based on slag composition and temperature. Statistical design software was used to select compositions from a candidate set of all possible vertices that will optimally represent the composition space for 10 main components. A total of 21 slag compositions were generated, including 5 actual coal slag compositions. The Arrhenius equation was applied to measured viscosity versus temperature data of tested slags, and the Arrhenius coefficients (A and B in ln(vis) = A + B/T) were expressed as linear functions of the slag composition. The viscosity model was validated using 1) data splitting approach, and 2) viscosity/temperature data of selected slag compositions from the literature that were formulated and melted at Pacific Northwest National Laboratory. The capability of the model to predict the viscosity of coal slags was compared with the model developed by Browning et al. because this model can predict the viscosity of slags from coal ash better than the most commonly used empirical models found in the literature.

Matyas, Josef; Cooley, Scott K.; Sundaram, S. K.; Rodriguez, Carmen P.; Edmondson, Autumn B.; Arrigoni, Benjamin M.

2008-10-25T23:59:59.000Z

203

Shear viscosity of pion gas  

E-Print Network [OSTI]

Using chiral perturbation theory we investigate the QCD shear viscosity ($\\eta $) to entropy density ($s$) ratio below the deconfinement temperature ($\\sim 170$ MeV) with zero baryon number density. It is found that $\\eta /s$ of QCD is monotonically decreasing in temperature ($T$) and reaches 0.6 with estimated $\\sim 50%$ uncertainty at T=120 MeV. A naive extrapolation of the leading order result shows that $\\eta /s$ reaches the $1/4\\pi $ minimum bound proposed by Kovtun, Son, and Starinets using string theory methods at $T\\sim 210$ MeV. This suggests a phase transition or cross over might occur at $T\\lesssim 210$ MeV in order for the bound to remain valid. Also, it is natural for $\\eta /s$ to stay close to the minimum bound around the phase transition temperature as was recently found in heavy ion collisions.

Eiji Nakano

2006-12-20T23:59:59.000Z

204

The viscosity of polymer melts  

Science Journals Connector (OSTI)

A simple theoretical argument is presented that gives the scaling behavior of the relaxation time in a polymer melt as a function of molecular weight M. The framework for this theory is based on the reptation model of de Gennes but also incorporates the effects of excluded volume. It is argued that the effects of excluded volume change the relaxation time from M 3 to M 3 exp(constM 2/3). This argument agrees qualitatively with a direct simulation of the reptation model that incorporates many?chain excluded volume interactions. This simulation fits experimental data quite well giving an effective power law relationship between viscosity ? and molecular weight namely ??M 3.4.1.

J. M. Deutsch

1986-01-01T23:59:59.000Z

205

Brief introduction to viscosity in hadron physics  

SciTech Connect (OSTI)

We introduce the concept of viscosity (both shear and bulk) in the context of hadron physics and in particular the meson gas, highlighting the current theoretical efforts to connect possible measurements of the viscosities to underlying physics such as a phase transition or the trace anomaly.

Dobado, Antonio; Llanes-Estrada, Felipe J.; Torres-Rincon, Juan M. [Departamento de Fisica Teorica I, Universidad Complutense de Madrid, 28040 Madrid (Spain)

2010-12-28T23:59:59.000Z

206

Viscosity Determination by Means of Ultrasonics  

Science Journals Connector (OSTI)

It has been shown that the phenomenon of persistence of diffracted lines in water suspensions of starch at different temperatures and also in water solutions of sucrose at different concentrations and constant temperature is related to the viscosity coefficient of the medium in terms of diffusion theory. Therefore we propose a method for the determination of viscosity coefficients by means of ultrasonics.

F. Fittipaldi; E. Ragozzino

1967-01-01T23:59:59.000Z

207

Effects of bulk viscosity at freezeout  

SciTech Connect (OSTI)

We investigate particle spectra and elliptic flow coefficients in relativistic heavy-ion collisions by taking into account the distortion of phase space distributions by bulk viscosity at freezeout. We first calculate the distortion of phase space distributions in a multicomponent system with Grad's 14-moment method. We find some subtle issues when macroscopic variables are matched with microscopic momentum distributions in a multicomponent system, and we develop a consistent procedure to uniquely determine the corrections to the phase space distributions. Next, we calculate particle spectra by using the Cooper-Frye formula to see the effect of the bulk viscosity. Despite the relative smallness of the bulk viscosity, we find that it is likely to have a visible effect on particle spectra and elliptic flow coefficients. This indicates the importance of taking into account bulk viscosity together with shear viscosity to constrain the transport coefficients with better accuracy from comparison with experimental data.

Monnai, Akihiko; Hirano, Tetsufumi [Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)

2009-11-15T23:59:59.000Z

208

46.1 Shear Viscosity An important mechanical property of fluids is viscosity. Physical systems and applications as diverse as  

E-Print Network [OSTI]

46-1 46.1 Shear Viscosity An important mechanical property of fluids is viscosity. Physical systems involve fluid flow and are controlled to some degree by fluid viscosity. Viscosity is the tendency, viscosity is related to molecular dif- fusion and depends on the interactions between molecules or

Kostic, Milivoje M.

209

VISCOSITY AND RELAXATION APPROXIMATIONS FOR HYPERBOLIC SYSTEMS OF CONSERVATION LAWS  

E-Print Network [OSTI]

VISCOSITY AND RELAXATION APPROXIMATIONS FOR HYPERBOLIC SYSTEMS deal with the approximation of conservation * *laws via viscosity or relaxation. The following topics are covered: The general structure of viscosity and relaxation approximations is discu

Tzavaras, Athanasios E.

210

VISCOSITY AND RELAXATION APPROXIMATIONS FOR HYPERBOLIC SYSTEMS OF CONSERVATION LAWS  

E-Print Network [OSTI]

VISCOSITY AND RELAXATION APPROXIMATIONS FOR HYPERBOLIC SYSTEMS OF CONSERVATION LAWS Athanasios E. Tzavaras Abstract. These lecture notes deal with the approximation of conservation laws via viscosity or relaxation. The following topics are covered: The general structure of viscosity and relaxation

Tzavaras, Athanasios E.

211

Fueling the Navy's Great Green Fleet with Advanced Biofuels | Department of  

Broader source: Energy.gov (indexed) [DOE]

Fueling the Navy's Great Green Fleet with Advanced Biofuels Fueling the Navy's Great Green Fleet with Advanced Biofuels Fueling the Navy's Great Green Fleet with Advanced Biofuels December 5, 2011 - 5:44pm Addthis Idaho National Laboratory describes R&D efforts to transform raw biomass into quality feedstocks for the production of renewable fuels, power and bioproducts. Aaron Crowell Senior Technical Research Analyst What does this project do? Develops and utilizes domestically produced biofuels to make our military and the nation more secure. From transporting the oil necessary to fuel jets and vehicles to supplying battery packs to infantry, energy plays a central role in almost everything the U.S. military does. Because of this reliance, it's imperative that the military cultivate energy sources that are not subject to the whims of

212

Carports with Solar Panels do Double Duty for Navy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Carports with Solar Panels do Double Duty for Navy Carports with Solar Panels do Double Duty for Navy Carports with Solar Panels do Double Duty for Navy May 14, 2010 - 12:22pm Addthis Joshua DeLung What does this project do? In total, all of China Lake's solar PV projects generate enough electricity a year to power up to 1,200 houses on the grid provided by Southern California Edison, the local utility. The base estimates that it saves about $557,000 a year from the solar panels. At Naval Air Weapons Station China Lake, heat is a fact of life. The base is located on the edge of the Mojave Desert near Ridgecrest, Calif., where the blistering summer heat can actually peel the paint off cars. Longtime desert residents know how to deal with it, but thanks to an ongoing environmental program, many base employees no longer have to do so. Since

213

Shear viscosity in neutron star cores  

E-Print Network [OSTI]

We calculate the shear viscosity $\\eta = \\eta_{e\\mu}+\\eta_{n}$ in a neutron star core composed of nucleons, electrons and muons ($\\eta_{e\\mu}$ being the electron-muon viscosity, mediated by collisions of electrons and muons with charged particles, and $\\eta_{n}$ the neutron viscosity, mediated by neutron-neutron and neutron-proton collisions). Deriving $\\eta_{e\\mu}$, we take into account the Landau damping in collisions of electrons and muons with charged particles via the exchange of transverse plasmons. It lowers $\\eta_{e\\mu}$ and leads to the non-standard temperature behavior $\\eta_{e\\mu}\\propto T^{-5/3}$. The viscosity $\\eta_{n}$ is calculated taking into account that in-medium effects modify nucleon effective masses in dense matter. Both viscosities, $\\eta_{e\\mu}$ and $\\eta_{n}$, can be important, and both are calculated including the effects of proton superfluidity. They are presented in the form valid for any equation of state of nucleon dense matter. We analyze the density and temperature dependence of $\\eta$ for different equations of state in neutron star cores, and compare $\\eta$ with the bulk viscosity in the core and with the shear viscosity in the crust.

P. S. Shternin; D. G. Yakovlev

2008-08-14T23:59:59.000Z

214

A new method for measuring the viscosity of nanoparticles | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A new method for measuring the viscosity of nanoparticles A new method for measuring the viscosity of nanoparticles First direct determination of the chemical diffusivity and...

215

Design of High Viscosity Cement Gun for Vertebroplasty:.  

E-Print Network [OSTI]

??Vertebroplasty is a minimally invasive procedure for treating spine. Cement leakage is problem occurring from usage of low viscosity bone cements. High viscosity bone cements (more)

Gupta, P.

2011-01-01T23:59:59.000Z

216

RMOTC to Test Oil Viscosity Reduction Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to Test Oil Viscosity Reduction Technology to Test Oil Viscosity Reduction Technology The Rocky Mountain Oilfield Testing Center (RMOTC) announces that the "Teapot Dome" oil field in Wyoming is hosting a series of tests funded by STWA, Inc. ("STWA") to determine the performance of its Applied Oil Technology (AOT(tm)) in reducing crude oil's viscosity to lower transportation costs for pipeline operators. The testing is managed by RMOTC, and conducted at Naval Petroleum Reserve No. 3, also known as the Teapot Dome oil field. RMOTC is providing the infrastructure and technical expertise to support companies such as STWA in their efforts to validate new technologies and bring those products and

217

Shear Viscosity from Effective Couplings of Gravitons  

E-Print Network [OSTI]

We calculate the shear viscosity of field theories with gravity duals using Kubo-formula by calculating the Green function of dual transverse gravitons and confirm that the value of the shear viscosity is fully determined by the effective coupling of transverse gravitons on the horizon. We calculate the effective coupling of transverse gravitons for Einstein and Gauss-Bonnet gravities coupled with matter fields, respectively. Then we apply the resulting formula to the case of AdS Gauss-Bonnet gravity with $F^4$ term corrections of Maxwell field and discuss the effect of $F^4$ terms on the ratio of the shear viscosity to entropy density.

Rong-Gen Cai; Zhang-Yu Nie; Ya-Wen Sun

2008-11-11T23:59:59.000Z

218

Bulk viscosity effects on elliptic flow  

E-Print Network [OSTI]

The effects of bulk viscosity on the elliptic flow $v_{2}$ are studied using realistic equation of state and realistic transport coefficients. We find that thebulk viscosity acts in a non trivial manner on $v_{2}$. At low $p_{T}$, the reduction of $v_{2}$ is even more effective compared to the case of shear viscosity, whereas at high $p_{T}$, an enhancement of $v_{2}$ compared to the ideal case is observed. We argue that this is caused by the competition of the critical behavior of the equation of state and the transport coefficients.

G. S. Denicol; T. Kodama; T. Koide; Ph. Mota

2009-07-24T23:59:59.000Z

219

Shear viscosity of $?$-stable nuclear matter  

E-Print Network [OSTI]

Viscosity plays a critical role in determining the stability of rotating neutron stars. We report the results of a calculation of the shear viscosity of $\\beta$~-~stable matter, carried out using an effective interaction based on a state-of-the-art nucleon-nucleon potential and the formalism of correlated basis functions. Within our approach the equation of state, determining the proton fraction, and the nucleon-nucleon scattering probability are consistently obtained from the same dynamical model. The results show that, while the neutron contribution to the viscosity is always dominant, above nuclear saturation density the electron contribution becomes appreciable.

Omar Benhar; Arianna Carbone

2009-12-01T23:59:59.000Z

220

Viscosity of gaseous ethyl fluoride (HFC-161)  

Science Journals Connector (OSTI)

Abstract The paper describes an improved Maxwell type oscillating-disk viscometer. The experimental system was calibrated by argon, carbon dioxide, nitrogen, hydrogen and verified by nitrogen. The viscosities of gaseous HFC-161 were measured from 293K to 369K at pressures from 0.1MPa up to the saturated vapor pressure. An empirical viscosity equation is proposed to interpolate the present experimental data as a function of density and temperature. The uncertainty of the reported viscosity was estimated to be within 1%.

Shaohua Lv; Xiaoming Zhao; Chuanqi Yao; Wei Wang; Zhikai Guo

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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.


221

Bulk viscosity of a pion gas  

SciTech Connect (OSTI)

We compute the bulk viscosity of a gas of pions at temperatures below the QCD crossover temperature, for the physical value of m{sub {pi}}, to lowest order in chiral perturbation theory. Bulk viscosity is controlled by number-changing processes which become exponentially slow at low temperatures when the pions become exponentially dilute, leading to an exponentially large bulk viscosity {zeta}{approx}(F{sub 0}{sup 8}/m{sub {pi}}{sup 5})exp(2m{sub {pi}}/T), where F{sub 0}{approx_equal}93 MeV is the pion decay constant.

Lu Egang; Moore, Guy D. [Department of Physics, McGill University, 3600 rue University, Montreal, Quebec, H3A 2T8 (Canada)

2011-04-15T23:59:59.000Z

222

The Bulk Viscosity of a Pion Gas  

E-Print Network [OSTI]

We compute the bulk viscosity of a gas of pions at temperatures below the QCD crossover temperature, for the physical value of pion mass, to lowest order in chiral perturbation theory. Bulk viscosity is controlled by number-changing processes which become exponentially slow at low temperatures when the pions become exponentially dilute, leading to an exponentially large bulk viscosity zeta ~ (F_0^8/m_\\pi^5) exp(2m_\\pi/T), where F_0 = 93 MeV is the pion decay constant.

Egang Lu; Guy D. Moore

2011-01-31T23:59:59.000Z

223

Intrinsic viscosity of a suspension of cubes  

Science Journals Connector (OSTI)

We report on the viscosity of a dilute suspension of cube-shaped particles. Irrespective of the particle size, size distribution, and surface chemistry, we find empirically that cubes manifest an intrinsic viscosity [?]=3.10.2, which is substantially higher than the well-known value for spheres, [?]=2.5. The orientation-dependent intrinsic viscosity of cubic particles is determined theoretically using a finite-element solution of the Stokes equations. For isotropically oriented cubes, these calculations show [?]=3.1, in excellent agreement with our experimental observations.

Rajesh K. Mallavajula; Donald L. Koch; Lynden A. Archer

2013-11-06T23:59:59.000Z

224

Electric Demand Reduction for the U.S. Navy Public Works Center San Diego, California  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory investigated the profitability of operating a Navy ship's generators (in San Diego) during high electricity price periods rather than the ships hooking up to the Base electrical system for power. Profitability is predicated on the trade-off between the operating and maintenance cost incurred by the Navy for operating the ship generators and the net profit associated with the sale of the electric power on the spot market. In addition, PNNL assessed the use of the ship's generators as a means to achieve predicted load curtailments, which can then be marketed to the California Independent System Operator.

Kintner-Meyer, Michael CW

2000-09-30T23:59:59.000Z

225

Randall-Sundrum model with $?viscosity  

E-Print Network [OSTI]

We study the effect of the inclusion of bulk brane viscosity on brane world (BW) cosmology in the framework of the Eckart's theory, we focus in the Randall-Sundrum model with negative tension on the brane.

Samuel Lepe; Francisco Pea; Joel Saavedra

2008-03-04T23:59:59.000Z

226

Quartz resonator fluid density and viscosity monitor  

DOE Patents [OSTI]

A pair of thickness-shear mode resonators, one smooth and one with a textured surface, allows fluid density and viscosity to be independently resolved. A textured surface, either randomly rough or regularly patterned, leads to trapping of liquid at the device surface. The synchronous motion of this trapped liquid with the oscillating device surface allows the device to weigh the liquid; this leads to an additional response that depends on liquid density. This additional response enables a pair of devices, one smooth and one textured, to independently resolve liquid density and viscosity; the difference in responses determines the density while the smooth device determines the density-viscosity product, and thus, the pair determines both density and viscosity.

Martin, Stephen J. (Albuquerque, NM); Wiczer, James J. (Albuquerque, NM); Cernosek, Richard W. (Albuquerque, NM); Frye, Gregory C. (Cedar Crest, NM); Gebert, Charles T. (Albuquerque, NM); Casaus, Leonard (Bernalillo, NM); Mitchell, Mary A. (Tijeras, NM)

1998-01-01T23:59:59.000Z

227

Viscosity and jet quenching from holographic model  

E-Print Network [OSTI]

We consider the backreaction of the fundamental flavor degrees of freedom on the AdS$_5$-Schwarz background, and calculate their contributions to the shear viscosity and jet-quenching parameter of the thermal quark-gluon plasma.

Yi-hong Gao; Wei-shui Xu; Ding-fang Zeng

2007-07-05T23:59:59.000Z

228

Viscosity in the escape-rate formalism  

Science Journals Connector (OSTI)

We apply the escape-rate formalism to compute the shear viscosity in terms of the chaotic properties of the underlying microscopic dynamics. A first-passage problem is set up for the escape of the Helfand moment associated with viscosity out of an interval delimited by absorbing boundaries. At the microscopic level of description, the absorbing boundaries generate a fractal repeller. The fractal dimensions of this repeller are directly related to the shear viscosity and the Lyapunov exponent, which allows us to compute its values. We apply this method to the Bunimovich-Spohn minimal model of viscosity which is composed of two hard disks in elastic collision on a torus. These values are in excellent agreement with the values obtained by other methods such as the Green-Kubo and Einstein-Helfand formulas.

S. Viscardy and P. Gaspard

2003-10-23T23:59:59.000Z

229

Bulk Viscosity of a Pion Gas  

SciTech Connect (OSTI)

We calculate the bulk viscosity of a pion gas at low energies within the kinetic theory approach and show the importance of dealing properly with the zero modes of this transport coefficient.

Dobado, Antonio; Torres-Rincon, Juan M. [Dpto. Fisica Teorica I, Universidad Complutense de Madrid, 28040 Madrid (Spain)

2011-05-23T23:59:59.000Z

230

Viscosity at RHIC: Theory and Practice  

E-Print Network [OSTI]

Hydrodynamic behavior and the associated discussions of viscosity at RHIC has inspired a r enaissance in modeling viscous hydrodynamics. An explanation of Israel-Stewart hydrodynamics is presented here, with an emphasis on the tangible benefits compared to Navier Stokes.

Scott Pratt

2008-09-01T23:59:59.000Z

231

Viscosity of Liquids and Colloidal Solutions  

Science Journals Connector (OSTI)

... conference it was decided to hold a further conference, in the following year, on "Viscosity of Liquids and Colloidal Solutions". This took place just before the German invasion and ...

G. W. SCOTT BLAIR

1945-08-04T23:59:59.000Z

232

Energy-saving technologies in viscose manufacture  

Science Journals Connector (OSTI)

-- Results of the realization of energy-economical technologies in the processes of continuous deaeration and two-stage vacuum crystallization of sodium sulfate from technological solutions in viscose manufact...

V. D. Chernov; I. Z. ifer; N. S. Markov; A. A. Yakobuk; Yu. N. Fikhman

233

Measurement of DWPF glass viscosity - Final Report  

SciTech Connect (OSTI)

This report details the results of a scoping study funded by the Defense Waste Processing Facility (DWPF) for the measurement of melt viscosities for simulated glasses representative of Macrobatch 2 (Tank 42/51 feed).

Harbour, J.R.

2000-02-17T23:59:59.000Z

234

Shear viscosity of hadronic gas mixtures  

E-Print Network [OSTI]

We investigate the effects of baryon chemical potential \\mu on the shear viscosity coefficient \\eta and the viscosity to entropy density ratio \\eta/s of a pion-nucleon gas mixture. We find that \\eta is an increasing function of T and \\mu, while the ratio \\eta/s turns to a decreasing function in a wide region of T-\\mu plane. In the kinematical region we studied, the smallest value of \\eta/s is about 0.3.

K. Itakura; O. Morimatsu; H. Otomo

2008-05-12T23:59:59.000Z

235

Shear viscosity of degenerate electron matter  

E-Print Network [OSTI]

We calculate the partial electron shear viscosity $\\eta_{ee}$ limited by electron-electron collisions in a strongly degenerate electron gas taking into account the Landau damping of transverse plasmons. The Landau damping strongly suppresses $\\eta_{ee}$ in the domain of ultrarelativistic degenerate electrons and modifies its %asymptotic temperature behavior. The efficiency of the electron shear viscosity in the cores of white dwarfs and envelopes of neutron stars is analyzed.

P. S. Shternin

2008-03-27T23:59:59.000Z

236

Tsunamis, Viscosity and the HBT Puzzle  

E-Print Network [OSTI]

The equation of state and bulk and shear viscosities are shown to be able to affect the transverse dynamics of a central heavy ion collision. The net entropy, along with the femtoscopic radii are shown to be affected at the 10-20% level by both shear and bulk viscosity. The degree to which these effects help build a tsunami-like pulse is also discussed.

Scott Pratt

2007-10-30T23:59:59.000Z

237

Viscosity of network liquids within Doremus approach  

Science Journals Connector (OSTI)

Defect-mediated diffusion and viscous flow of network forming liquids have been investigated. An analytical formula of viscosity has been derived with two-exponential forms demonstrating high activation energy at low temperatures and low activation energy at high temperatures with Arrhenius-type behavior for both high and low temperature limits. Calculated data for the viscosity of silica glass are in excellent agreement with the experimental data.

Michael I. Ojovan; William E. Lee

2004-01-01T23:59:59.000Z

238

The dependence of suspension viscosity on particle size, shear rate, and solvent viscosity.  

E-Print Network [OSTI]

??The relative viscosity of a mono-disperse suspension of glass particles can vary drastically depending on a number of factors, including but not limited to the (more)

Pavlik, Marc

2011-01-01T23:59:59.000Z

239

Hydrographer of the Navy: Retirement of Vice-Admiral Sir John Edgell, K.B.E., C.B., F.R.S  

Science Journals Connector (OSTI)

... ON April 30, Vice-Admiral Sir John Edgell retired from the post of Hydrographer of the Navy which he had held since ... from the post of Hydrographer of the Navy which he had held since 1932. Sir John has seen fifty-one years of service in the Navy, and had been in ...

1945-05-26T23:59:59.000Z

240

Energy Department Joins Navy and Agriculture Departments to Invest in Drop-In Biofuel for Military  

Broader source: Energy.gov [DOE]

Deputy Secretary Daniel Poneman joined Tom Vilsack, Secretary of the U.S. Department of Agriculture, and Secretary Ray Mabus of the U.S. Department of Navy, on September 19, 2014, to announce awards for three commercial-scale biorefinery projects that will help meet the transportation needs of the U.S. military and private sector.

Note: This page contains sample records for the topic "viscosity navy special" 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

Detection of Suspended Sediment Effect on Sidescan Sonar Imagery Using the Navy's CASS-GRAB Model  

E-Print Network [OSTI]

Detection of Suspended Sediment Effect on Sidescan Sonar Imagery Using the Navy's CASS-GRAB Model P images of ordnance such as sea- mine buried in sediments. The sonar operates by illuminating a broad the illuminated sediment volume is measured. The effect of suspended sediment on the sonar imagery depends

Chu, Peter C.

242

Entropy viscosity Jean-Luc Guermond, B. Popov  

E-Print Network [OSTI]

Entropy viscosity Jean-Luc Guermond, B. Popov Department of Mathematics Texas A&M University-Luc Guermond, B. Popov Residual/Entropy viscosity #12;Acknowledgments Collaborator: Richard Pasquetti, Univ/Entropy viscosity #12;Outline 1 TRANSPORT EQUATION Jean-Luc Guermond, B. Popov Residual/Entropy viscosity #12

Guermond, Jean-Luc

243

VISCOSITY SOLUTIONS TO DEGENERATE COMPLEX MONGE-AMP`ERE EQUATIONS  

E-Print Network [OSTI]

VISCOSITY SOLUTIONS TO DEGENERATE COMPLEX MONGE-AMP`ERE EQUATIONS PHILIPPE EYSSIDIEUX, VINCENT an alternative approach based on the concept of viscosity solutions and compare systematically viscosity concepts PDE approach to second-order degenerate elliptic equations is the method of viscosity solutions

Boyer, Edmond

244

cial Mathematics Instruction Special Mathematics Instruction Special Mathematics Instruction S hematics Instruction Special Mathematics Instruction Special Mathematics Instruction Special M  

E-Print Network [OSTI]

SMI cial Mathematics Instruction Special Mathematics Instruction Special Mathematics Instruction S hematics Instruction Special Mathematics Instruction Special Mathematics Instruction Special M ruction Special Mathematics Instruction Special Mathematics Instruction Special Mathematics In cial Mathematics

Vaswani, Namrata

245

Core Specialization  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Core Specialization Core Specialization Core Specialization Core Specialization (CS) is a feature of the Cray operating system that allows the user to reserve one or more cores per node for handling system services, and thus reduce the effects of timing jitter due to interruptions from the operating system at the expense of (possibly) requiring more nodes to run an application. The specialized cores may also be used in conjunction with Cray's MPI asynchronous progress engine [1] to improve the overlap of communication and computation for applications that use non-blocking MPI functions. In the absence of CS, the compute cores must service their own non-blocking calls. Hyper-Threading complicates questions abouty the most effective use of processor resources. HT doubles the number of compute stream (i.e.

246

Internal Viscosity of the Red Cell and a Blood Viscosity Equation  

Science Journals Connector (OSTI)

... The determination of the actual numerical values of the internal viscosity of the red cell is not simple. A direct ingress on the interior of ... visualized in which suspensions of the red cells could be studied in fluids of different viscosities. Such fluids could be solutions of high molecular weight dextran, solutions of macroglobulin or ...

LEOPOLD DINTENFASS

1968-08-31T23:59:59.000Z

247

Entropy viscosity method applied to Euler equations  

SciTech Connect (OSTI)

The entropy viscosity method [4] has been successfully applied to hyperbolic systems of equations such as Burgers equation and Euler equations. The method consists in adding dissipative terms to the governing equations, where a viscosity coefficient modulates the amount of dissipation. The entropy viscosity method has been applied to the 1-D Euler equations with variable area using a continuous finite element discretization in the MOOSE framework and our results show that it has the ability to efficiently smooth out oscillations and accurately resolve shocks. Two equations of state are considered: Ideal Gas and Stiffened Gas Equations Of State. Results are provided for a second-order time implicit schemes (BDF2). Some typical Riemann problems are run with the entropy viscosity method to demonstrate some of its features. Then, a 1-D convergent-divergent nozzle is considered with open boundary conditions. The correct steady-state is reached for the liquid and gas phases with a time implicit scheme. The entropy viscosity method correctly behaves in every problem run. For each test problem, results are shown for both equations of state considered here. (authors)

Delchini, M. O.; Ragusa, J. C. [Nuclear Engineering Department, Texas A and M University, 3133 TAMU, College Station, TX 77843-3133 (United States); Berry, R. A. [Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID 83415-3840 (United States)

2013-07-01T23:59:59.000Z

248

Hall viscosity to entropy ratio in higher derivative theories  

E-Print Network [OSTI]

In this paper based on the basic principles of gauge/gravity duality we compute the hall viscosity to entropy ratio in the presence of various higher derivative corrections to the dual gravitational description embedded in an asymptotically $ AdS_{4} $ space time. As the first step of our analysis, considering the back reaction we impose higher derivative corrections to the abelian gauge sector of the theory where we notice that the ratio indeed gets corrected at the leading order in the coupling. Considering the probe limit as a special case we compute this leading order correction over the fixed background of the charged black brane solution. Finally we consider higher derivative ($ R^{2} $) correction to the gravity sector of the theory where we notice that the above ratio might get corrected at the sixth derivative level.

Dibakar Roychowdhury

2014-08-21T23:59:59.000Z

249

Bulk viscosity in heavy ion collision  

E-Print Network [OSTI]

The effect of a temperature dependent bulk viscosity to entropy density ratio~($\\zeta/s$) along with a constant shear viscosity to entropy density ratio~($\\eta/s$) on the space time evolution of the fluid produced in high energy heavy ion collisions have been studied in a relativistic viscous hydrodynamics model. The boost invariant Israel-Stewart theory of causal relativistic viscous hydrodynamics is used to simulate the evolution of the fluid in 2 spatial and 1 temporal dimension. The dissipative correction to the freezeout distribution for bulk viscosity is calculated using Grad's fourteen moment method. From our simulation we show that the method is applicable only for $\\zeta/s<0.004$.

Victor Roy; A. K. Chaudhuri

2012-01-20T23:59:59.000Z

250

Energy-momentum tensor correlators and viscosity  

E-Print Network [OSTI]

Collective flow has been observed in heavy ion collisions, with a large anisotropic component, and ideal hydrodynamic calculations had significant successful in describing the distribution of produced particles at the RHIC experiments. In order to account for this near ideal fluid behavior, the shear and bulk viscosity of the quark gluon plasma (QGP) must be computed from first principles in a regime where the QGP is not weakly coupled. In this talk I describe recent progress in computing energy-momentum tensor correlators on the lattice from which the viscosities can be extracted via Kubo formulas. I also show how to cumulate information from several channels, including at non-vanishing spatial momentum, in order to best constrain the viscosities. These methods should soon yield predictions at the higher temperatures that will be explored at the LHC experiments.

Harvey B. Meyer

2008-09-30T23:59:59.000Z

251

Viscosity of high-temperature iodine  

Science Journals Connector (OSTI)

The viscosity coefficient of iodine in the temperature range 500?T?3000 K is calculated. Because of the low dissociation energy of the I2 molecules, the dissociation degree of the gas increases quickly with temperature, and I+I2 and I+I collisions must be taken into account in calculations of viscosity at temperatures greater than 1000. Several possible channels for atom-atom interaction are considered, and the resulting collision integrals are averaged over all the important channels. It is also shown that the rigid-sphere model is inaccurate in predictions of the viscosity. The approach of the present work is general and can be used for other diatomic gases with arbitrary dissociation degree.

Steve H. Kang and Joseph A. Kunc

1991-09-15T23:59:59.000Z

252

Shear Viscosity of a Hot Pion Gas  

E-Print Network [OSTI]

The shear viscosity of an interacting pion gas is studied using the Kubo formalism as a microscopic description of thermal systems close to global equilibrium. We implement the skeleton expansion in order to approximate the retarded correlator of the viscous part of the energy-momentum tensor. After exploring this in $g\\phi^4$ theory we show how the skeleton expansion can be consistently applied to pions in chiral perturbation theory. The shear viscosity $\\eta$ is determined by the spectral width, or equivalently, the mean free path of pions in the heat bath. We derive a new analytical result for the mean free path which is well-conditioned for numerical evaluation and discuss the temperature and pion-mass dependence of the mean free path and the shear viscosity. The ratio $\\eta/s$ of the interacting pion gas exceeds the lower bound $1/4\\pi$ from AdS/CFT correspondence.

Robert Lang; Norbert Kaiser; Wolfram Weise

2012-09-04T23:59:59.000Z

253

Core Specialization  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Core Core Specialization Core Specialization Core Specialization (CS) is a feature of the Cray operating system that allows the user to reserve one or more cores per node for handling system services, and thus reduce the effects of timing jitter due to interruptions from the operating system at the expense of (possibly) requiring more nodes to run an application. The specialized cores may also be used in conjunction with Cray's MPI asynchronous progress engine [1] to improve the overlap of communication and computation for applications that use non-blocking MPI functions. In the absence of CS, the compute cores must service their own non-blocking calls. Hyper-Threading complicates questions abouty the most effective use of processor resources. HT doubles the number of compute stream (i.e.

254

Special Distribution  

Office of Legacy Management (LM)

Special Distribution Special Distribution Issued: December 1977 ',, Radiological Survey and Decontamination of the Former Main Technical Area (TA-1) at Los Alamos, New Mexico Compiled by A. John Ahlquist Alan K. Stoker Linda K. Trocki c laboratory of, the University of California LOS ALAMOS, NEW MEXICO 87545 An Alfirmdve Action/Equal Opportunity Employer ..-_- .-- .--.-. c T -,--... _ _._-r..l __,.. - .-,_.. ..- _._ -- .--. " . . _ . - . c- - . . . _ -. . _ . - . - . _ - - n - _ _~ ~_. __ _ ~~_ --..&e+ L.';; CONTENTS ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._____ 1 EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._... _._ 2 I. BACKGROUND .............................................. 15

255

Shear Viscosity of a Unitary Fermi Gas  

E-Print Network [OSTI]

We present the first ab initio determination of the shear viscosity eta of the Unitary Fermi Gas, based on finite temperature quantum Monte Carlo calculations and the Kubo linear-response formalism. We determine the temperature dependence of the shear viscosity to entropy density ratio eta/s. The minimum of eta/s appears to be located above the critical temperature for the superfluid-to-normal phase transition with the most probable value being eta/s approx 0.2 hbar/kB, which almost saturates the Kovtun-Son-Starinets universal value hbar/(4 pi kB).

Gabriel Wlaz?owski; Piotr Magierski; Joaqun E. Drut

2012-04-01T23:59:59.000Z

256

Apparatus and method for measuring viscosity  

DOE Patents [OSTI]

The present invention is directed to an apparatus and method for measuring the viscosity of a fluid. This apparatus and method is particularly useful for the measurement of the viscosity of a liquid in a harsh environment characterized by high temperature and the presence of corrosive or deleterious gases and vapors which adversely affect conventional ball or roller bearings. The apparatus and method of the present invention employ one or more flexural or torsional bearings to suspend a bob capable of limited angular motion within a rotatable sleeve suspended from a stationary frame. 7 figs.

Murphy, R.J. Jr.

1986-02-25T23:59:59.000Z

257

Viscosity of Two-Dimensional Suspensions  

Science Journals Connector (OSTI)

Over a range of conditions, lipid and surfactant monolayers exhibit coexistence of discrete solid domains in a continuous liquid. The surface shear viscosity, ?s, of such monolayers collapses onto a single curve: ?s/?so=[1-(A/Ac)]-1, in which ?so is the viscosity of the liquid phase, A is the area fraction of the solid phase measured by fluorescence microscopy, and Ac is a critical solid phase fraction. This scaling relationship is directly analogous to that of three-dimensional dispersion of spheres in a solvent with long-range repulsive interactions, with area fraction replacing volume fraction.

Junqi Ding; Heidi E. Warriner; Joseph A. Zasadzinski

2002-04-08T23:59:59.000Z

258

Apparatus and method for measuring viscosity  

DOE Patents [OSTI]

The present invention is directed to an apparatus and method for measuring the viscosity of a fluid. This apparatus and method is particularly useful for the measurement of the viscosity of a liquid in a harsh environment characterized by high temperature and the presence of corrosive or deleterious gases and vapors which adversely affect conventional ball or roller bearings. The apparatus and method of the present invention employ one or more flexural or torsional bearings to suspend a bob capable of limited angular motion within a rotatable sleeve suspended from a stationary frame.

Murphy, Jr., Robert J. (Bellaire, TX)

1986-01-01T23:59:59.000Z

259

Shear Viscosity in a Gluon Gas  

Science Journals Connector (OSTI)

The relation of the shear viscosity coefficient to the recently introduced transport rate is derived within relativistic kinetic theory. We calculate the shear viscosity over entropy ratio ?/s for a gluon gas, which involves elastic gg?gg perturbative QCD (PQCD) scatterings as well as inelastic gg?ggg PQCD bremsstrahlung. For ?s=0.3 we find ?/s=0.13 and for ?s=0.6, ?/s=0.076. The small ?/s values, which suggest strongly coupled systems, are due to the gluon bremsstrahlung incorporated.

Zhe Xu and Carsten Greiner

2008-04-29T23:59:59.000Z

260

Viscosity of a nanoconfined liquid during compression  

Science Journals Connector (OSTI)

The viscous behavior of liquids under nanoconfinement is not well understood. Using a small-amplitude atomic force microscope we found bulk-like viscosity in a nanoconfined weakly interacting liquid. A further decrease in viscosity was observed at confinement sizes of a just few molecular layers. Overlaid over the continuum viscous behavior we measured non-continuum stiffness and damping oscillations. The average stiffness of the confined liquid was found to scale linearly with the size of the confining tip while the damping scales with the radius of curvature of the tip end.

Edward L. Kramkowski; Peter J. Ochs; David M. Wilson

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Viscosity model for polydisperse polymer melts  

Science Journals Connector (OSTI)

A simple superposition model was used to define the relationship between molecular weight distribution and shear viscosity for linear polymeric systems. Gel permeation chromatography data for molecular weight distributions were fitted using statistical distribution functions. A simple superposition model was then employed to calculate the shear viscosity for the systems investigated. The effect of polydispersity on the shape of the flow curves was calculated. The simplicity of the model makes feasible its use in numerical simulations of complex geometries as encountered in polymer processing equipment. The present study also sheds some light on the relationship between entanglement and disentanglement phenomena in polymeric systems.

D. Nichetti; I. Manas-Zloczower

1998-01-01T23:59:59.000Z

262

Live Webinar on the Marine and Hydrokinetic Demonstrations at The Navy's Wave Energy Test Site Funding Opportunity Announcement  

Broader source: Energy.gov [DOE]

On Wednesday, May 7, 2014 from 3:00 PM - 4:30 PM EDT the Water Power Program will hold an informational webinar on the Marine and Hydrokinetic (MHK) Demonstrations at The Navy's Wave Energy Test...

263

NREL: News - NREL Teams with Navy, Private Industry to Make Jet Fuel from  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

313 313 NREL Teams with Navy, Private Industry to Make Jet Fuel from Switchgrass Project could spur jobs in rural America, lead to less reliance of foreign oil June 6, 2013 The Energy Department's National Renewable Energy Laboratory (NREL) is partnering with Cobalt Technologies, U.S. Navy, and Show Me Energy Cooperative to demonstrate that jet fuel can be made economically and in large quantities from a renewable biomass feedstock such as switch grass. "This can be an important step in the efforts to continue to displace petroleum by using biomass resources," NREL Manager for Bioprocess Integration R&D Dan Schell said. "We're converting biomass into sugars for subsequent conversion to butanol and then to JP5 jet fuel." It's one of four biorefinery projects funded recently by the Energy

264

Fluidized-bed boiler assessment for Navy applications. Final report, October 1983-September 1985  

SciTech Connect (OSTI)

This report discusses the assessment of one of the most-promising coal-firing technologies - Fluidized-Bed Combustion(FBC) - for Navy stationary boilers. The working principles, physical construction, major and auxiliary components, and system performance of an FBC boiler are described and compared with the conventional stoker and pulverized-coal fired boilers. The advantages of the FBC boiler based on fuel flexibility, operational reliability, economic feasibility, and environmental acceptability are identified, state-of-development and FBC manufacturers are also noted. The problems with the Great Lakes FBC boiler plant were studied and possible remedial measures are given. Considerations for FBC retrofitting have been examined based on boiler size, age, configuration, accessory components, and available space. Recommendations on how to achieve the Navy's goal of coal utilization by the FBC approach are outlined.

Fu, T.T.; Maga, G.F.

1986-11-01T23:59:59.000Z

265

Energy Management System Lowers U.S. Navy Energy Costs Through PV System Interconnection (Fact Sheet)  

SciTech Connect (OSTI)

To meet the U.S. Navy's energy goals, the National Renewable Energy Laboratory (NREL) and the Naval Facilities Engineering Command (NAVFAC) spent two years collaborating on demonstrations that tested market-ready energy efficiency measures, renewable energy generation, and energy systems integration. One such technology - an energy management system - was identified as a promising method for reducing energy use and costs, and can contribute to increasing energy security.

Not Available

2014-04-01T23:59:59.000Z

266

Retrofitting Inefficient Rooftop Air-Conditioning Units Reduces U.S. Navy Energy Use (Fact Sheet)  

SciTech Connect (OSTI)

As part of the U.S. Navy's overall energy strategy, the National Renewable Energy Laboratory (NREL) partnered with the Naval Facilities Engineering Command (NAVFAC) to demonstrate market-ready energy efficiency measures, renewable energy generation, and energy systems integration. One such technology - retrofitting rooftop air-conditioning units with an advanced rooftop control system - was identified as a promising source for reducing energy use and costs, and can contribute to increasing energy security.

Not Available

2014-04-01T23:59:59.000Z

267

Viscosity to entropy ratio at extremality  

E-Print Network [OSTI]

Assuming gauge theory realization at the boundary, we show that the viscosity to entropy ratio is 1/(4 pi) where the bulk is represented by a large class of extremal black holes in anti-de Sitter space. In particular, this class includes multiple R-charged black holes in various dimensions.

Sayan K. Chakrabarti; Sachin Jain; Sudipta Mukherji

2009-10-27T23:59:59.000Z

268

Bulk viscosity in a cold CFL superfluid  

E-Print Network [OSTI]

We compute one of the bulk viscosity coefficients of cold CFL quark matter in the temperature regime where the contribution of mesons, quarks and gluons to transport phenomena is Boltzmann suppressed. In that regime dissipation occurs due to collisions of superfluid phonons, the Goldstone modes associated to the spontaneous breaking of baryon symmetry. We first review the hydrodynamics of relativistic superfluids, and remind that there are at least three bulk viscosity coefficients in these systems. We then compute the bulk viscosity coefficient associated to the normal fluid component of the superfluid. In our analysis we use Son's effective field theory for the superfluid phonon, amended to include scale breaking effects proportional to the square of the strange quark mass m_s. We compute the bulk viscosity at leading order in the scale breaking parameter, and find that it is dominated by collinear splitting and joining processes. The resulting transport coefficient is zeta=0.011 m_s^4/T, growing at low temperature T until the phonon fluid description stops making sense. Our results are relevant to study the rotational properties of a compact star formed by CFL quark matter.

Cristina Manuel; Felipe Llanes-Estrada

2007-05-26T23:59:59.000Z

269

Electron perpendicular viscosity in Braginskii's equations  

SciTech Connect (OSTI)

The viscosity coefficient of the electron perpendicular stress tensor in Braginskii's theory is corrected by the addition of a term of the same order of magnitude, through the inclusion of a term beyond pitch angle scattering in the mass-ratio expansion of the electron-ion collision operator.

Wong, S. K.; Chan, V. S. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)] [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)

2013-07-15T23:59:59.000Z

270

Hydrodynamic Modeling and the QGP Shear Viscosity  

E-Print Network [OSTI]

In this article, we will briefly review the recent progress on hydrodynamic modeling and the extraction of the quark-gluon plasma (QGP) specific shear viscosity with an emphasis on results obtained from the hybrid model VISHNU that couples viscous hydrodynamics for the macroscopic expansion of the QGP to the hadron cascade model for the microscopic evolution of the late hadronic stage.

Huichao Song

2012-07-10T23:59:59.000Z

271

From Stopping to Viscosity in Nuclear Reactions  

SciTech Connect (OSTI)

Data on stopping in intermediate-energy central heavy-ion collisions are analyzed following transport theory based on the Boltzmann equation. In consequence, values of nuclear shear viscosity are inferred. The inferred values are significantly larger than obtained for free nucleon dispersion relations and free nucleon-nucleon cross sections.

Danielewicz, Pawel; Barker, Brent; Shi Lijun [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy Michigan State University, East Lansing, Michigan 48824 (United States)

2009-05-07T23:59:59.000Z

272

From Stopping to Viscosity in Nuclear Reactions  

E-Print Network [OSTI]

Data on stopping in intermediate-energy central heavy-ion collisions are analyzed following transport theory based on the Boltzmann equation. In consequence, values of nuclear shear viscosity are inferred. The inferred values are significantly larger than obtained for free nucleon dispersion relations and free nucleon-nucleon cross sections.

Danielewicz, P; Shi, L

2009-01-01T23:59:59.000Z

273

From Stopping to Viscosity in Nuclear Reactions  

E-Print Network [OSTI]

Data on stopping in intermediate-energy central heavy-ion collisions are analyzed following transport theory based on the Boltzmann equation. In consequence, values of nuclear shear viscosity are inferred. The inferred values are significantly larger than obtained for free nucleon dispersion relations and free nucleon-nucleon cross sections.

P. Danielewicz; B. Barker; L. Shi

2009-03-14T23:59:59.000Z

274

Sonically produced heat in a fluid with bulk viscosity and shear viscosity  

Science Journals Connector (OSTI)

In a viscous fluid sound produces heat in a spatial pattern which in general depends on the relative magnitudes of the shear viscosity coefficient ? and the bulk viscosity coefficient B. It is well known that when the particle velocity components u i relative to Cartesian coordinates x i are given for an arbitrary sound field or any field of flow the volume rate of heat production q v can be determined from a dissipation function in the form BT 1+?T 2. Here T 1 and T 2 are quadratic functions involving derivatives of the type ?u i /?x j . In this paper examples are discussed for continuous monofrequency sound fields including crossed plane waves as well as focused and unfocused fields. In these examples spatial distributions of the time?averaged quantity ?q v ? for media in which the loss mechanism is primarily bulk viscosity are compared to those for media in which shear viscosity dominates.

Wesley L. Nyborg

1986-01-01T23:59:59.000Z

275

Shear Viscosity from the Effective Coupling of Gravitons  

E-Print Network [OSTI]

We review the progress in the holographic calculation of shear viscosity for strongly coupled field theories. We focus on the calculation of shear viscosity from the effective coupling of transverse gravitons and present some explicit examples.

Rong-Gen Cai; Zhang-Yu Nie; Ya-Wen Sun

2010-06-03T23:59:59.000Z

276

Shear viscosity of CFT plasma at finite coupling  

E-Print Network [OSTI]

We present evidence for the universality of the shear viscosity of conformal gauge theory plasmas beyond infinite coupling. We comment of subtleties of computing the shear viscosity in effective models of gauge/gravity correspondence rather than in string theory.

Alex Buchel

2008-04-19T23:59:59.000Z

277

Relation between viscosity and stability for heavy oil emulsions  

E-Print Network [OSTI]

The relation between viscosity and stability has been hics. found by investigating the effect of surfactant concentration on emulsion stability. Based on the Bingham plastic model for viscosity as a function of shear rate, two parameters were found...

Ye, Sherry Qianwen

2012-06-07T23:59:59.000Z

278

Shear viscosity and spectral function of the quark matter  

E-Print Network [OSTI]

We discuss the shear viscosity of the quark matter by using the Kubo-Mori formula. It is found that the shear viscosity is expressed in terms of the quark spectral function. If the spectral function is approximated by a modified Bright-Wigner type, the viscosity decreases as the width of the spectral function increases. We also discuss dependence of the shear viscosity on the temperature and the density.

Masaharu Iwasaki; Hiromasa Ohnishi; Takahiko Fukutome

2006-06-19T23:59:59.000Z

279

Bulk viscosity and r-modes of neutron stars  

E-Print Network [OSTI]

The bulk viscosity due to the non-leptonic process involving hyperons in $K^-$ condensed matter is discussed here. We find that the bulk viscosity is modified in a superconducting phase. Further, we demonstrate how the exotic bulk viscosity coefficient influences $r$-modes of neutron stars which might be sources of detectable gravitational waves.

Debarati Chatterjee; Debades Bandyopadhyay

2008-08-08T23:59:59.000Z

280

VISCOSITY SOLUTIONS OF HAMILTON-JACOBI EQUATIONS, AND ASYMPTOTICS FOR  

E-Print Network [OSTI]

VISCOSITY SOLUTIONS OF HAMILTON-JACOBI EQUATIONS, AND ASYMPTOTICS FOR HAMILTONIAN SYSTEMS DIOGO. In this paper we apply the theory of viscosity solu- tions of Hamilton-Jacobi equations to understand) with cer- tain minimizing properties) and viscosity solutions of Hamilton-Jacobi equations (2) H(P + Dxu, x

Note: This page contains sample records for the topic "viscosity navy special" 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

VISCOSITY SOLUTIONS OF FULLY NONLINEAR ELLIPTIC PATH DEPENDENT PDES  

E-Print Network [OSTI]

VISCOSITY SOLUTIONS OF FULLY NONLINEAR ELLIPTIC PATH DEPENDENT PDES ZHENJIE REN Abstract, inspired by [3], we define the viscosity solution, by using the nonlinear expectation. The paper contains , that for any bounded viscosity subsolution u1 and Key words and phrases. Path dependent PDEs, Dirichlet problem

Paris-Sud XI, Université de

282

Viscosity Control of the Composition of Ocean Floor Volcanics  

Science Journals Connector (OSTI)

4 February 1971 research-article Viscosity Control of the Composition of Ocean Floor...environment. Instead it is postulated that the viscosity exercises a control by limiting the range...magmas (to those with a sufficiently low viscosity) which is capable of penetrating the...

1971-01-01T23:59:59.000Z

283

Viscosity of magmatic liquids: A model Daniele Giordano a,  

E-Print Network [OSTI]

Viscosity of magmatic liquids: A model Daniele Giordano a, , James K. Russell b , Donald B: C.P. Jaupart Keywords: viscosity model silicate-melts volatile-bearing-melts glass transition fragility The viscosity of silicate melts controls magma transport dynamics, eruption style and rates

Russell, Kelly

284

Viscosity and Relaxation Approximation for Hyperbolic Systems of Conservation Laws  

E-Print Network [OSTI]

Viscosity and Relaxation Approximation for Hyperbolic Systems of Conservation Laws Athanasios E with the approximation of conservation laws via viscosity or relaxation. The following topics are covered: The general structure of viscosity and relaxation approximations is discussed, as suggested by the second law

Tzavaras, Athanasios E.

285

Bulk viscosity of gauge theory plasma at strong coupling  

E-Print Network [OSTI]

We propose a lower bound on bulk viscosity of strongly coupled gauge theory plasmas. Using explicit example of the N=2^* gauge theory plasma we show that the bulk viscosity remains finite at a critical point with a divergent specific heat. We present an estimate for the bulk viscosity of QGP plasma at RHIC.

Alex Buchel

2007-08-27T23:59:59.000Z

286

Viscosity, hard sphere diameter and interionic potential for liquid lead  

E-Print Network [OSTI]

L-347 Viscosity, hard sphere diameter and interionic potential for liquid lead G. Chaussemy The Macedo-Litovitz equation for a hard sphere liquid provides a satisfactory model for the viscosity of lead and molecular dynamics. The activation energy for viscosity (0.07 eV) is similar to the height of the interionic

Boyer, Edmond

287

VISCOSITY SOLUTIONS OF HAMILTONJACOBI EQUATIONS WITH DISCONTINUOUS COEFFICIENTS  

E-Print Network [OSTI]

VISCOSITY SOLUTIONS OF HAMILTON­JACOBI EQUATIONS WITH DISCONTINUOUS COEFFICIENTS GIUSEPPE MARIA of viscosity solution to the Cauchy problem, and that the front tracking algorithm yields an L contractive semigroup. We define a viscosity solution by treating the discontinuities in the coefficients analogously

288

Viscosity dependence of geminate recombination efficiency after bimolecular charge separation  

E-Print Network [OSTI]

Viscosity dependence of geminate recombination efficiency after bimolecular charge separation A. A viscosity dependence. As a result the latter becomes nonmonotonous, provided the kinetic controlled ionization gives way to a diffusional one, creating the more remote ions the higher the solvent viscosity

Burshtein, Anatoly

289

Viscosity of Quantum Hall Fluids J. E. Avron  

E-Print Network [OSTI]

Viscosity of Quantum Hall Fluids J. E. Avron Department of Physics, Technion, 32000 Haifa, Israel R April 25, 1997 Abstract The viscosity of quantum fluids with an energy gap at zero temperature is non of the parameter space). For a quantum Hall fluid on two dimensional tori this viscosity is computed. In this case

290

VISCOSITY OF NEMATIC-CHIRAL MIXTURES AND THEIR ELECTROOPTICAL CHARACTERISTICS  

E-Print Network [OSTI]

VISCOSITY OF NEMATIC-CHIRAL MIXTURES AND THEIR ELECTROOPTICAL CHARACTERISTICS Z. M. ELASHVILI, M. D of Georgian SSR, Tbilisi 380086, S. Euli str. 5, USSR Abstract. -- We have measured the viscosity in mixtures that the increase of the viscosity at low additive concentration (Cm

Boyer, Edmond

291

VISCOSITY OF CONCENTRATED SUSPENSIONS: INFLUENCE OF CLUSTER FORMATION  

E-Print Network [OSTI]

1 VISCOSITY OF CONCENTRATED SUSPENSIONS: INFLUENCE OF CLUSTER FORMATION V.Starov1 , V.Zhdanov1 , M and these forces determine both structure and size of clusters. We assume that viscosity of concentrated suspension of viscosity on a concentration of dispersed particles taking into account cluster formation, is deduced. Under

Boyer, Edmond

292

Viscosity and Light Scattering in Critical Mixtures  

Science Journals Connector (OSTI)

Simultaneous measurements of both viscosity and light scattering are performed on two critical mixtures. The first one is a triethylamine-water solution, which exhibits a lower consolute point, the second one a methanol-ciclohexane mixture with an upper consolute point. It is found that the singular behavior of viscosity cannot be fitted by a simple power law, nor by a logarithmic one, in the entire range of temperature. The asymptotic behavior, however, tends to become logarithmic as the critical temperature is approached. The simultaneous observation of scattered light allows one to exclude the intervention of spurious processes, like a breaking of correlations because of impurities. In addition, it is shown that the correlation length seems to depend mainly on the reduced temperature, irrespective of the system under examination.

S. Ballaro'; G. Maisano; P. Migliardo; F. Wanderlingh

1972-10-01T23:59:59.000Z

293

Viscosity of a mixture of soft spheres  

Science Journals Connector (OSTI)

The viscosity of a 50% mixture of soft spheres (i.e., particles which interact according to the force law ?=dr12) has been simulated by applying nonequilibrium molecular dynamics to a system of 108 particles. Results for several size (actually d) and mass differences are given and compared with the predictions of a conformal-solution Van der Waals 1 theory. To construct this theory, it was necessary to derive a mixing rule for the mass. Overall, agreement between theory and simulation is satisfactory to size differences of about 14% and to mass differences of about 5%. It is pointed out that nonequilibrium molecular dynamics is a powerful technique and appears well suited to this particular application: The simulated viscosity of the mixture can be obtained to within about 5% accuracy for the 108-particle system by applying a shear to the system and following its behavior for about 7000 time steps.

Denis J. Evans and H. J. M. Hanley

1979-10-01T23:59:59.000Z

294

Viscosity, Black Holes, and Quantum Field Theory  

E-Print Network [OSTI]

We review recent progress in applying the AdS/CFT correspondence to finite-temperature field theory. In particular, we show how the hydrodynamic behavior of field theory is reflected in the low-momentum limit of correlation functions computed through a real-time AdS/CFT prescription, which we formulate. We also show how the hydrodynamic modes in field theory correspond to the low-lying quasinormal modes of the AdS black p-brane metric. We provide a proof of the universality of the viscosity/entropy ratio within a class of theories with gravity duals and formulate a viscosity bound conjecture. Possible implications for real systems are mentioned.

D. T. Son; A. O. Starinets

2007-04-02T23:59:59.000Z

295

Viscosity/Concentration Relationships for Emulsions  

Science Journals Connector (OSTI)

Empirical and theoretical relationships are developed to describe the viscosity/concentration behavior of Newtonian and non?Newtonian emulsions having dispersed?phase concentrations less than 74% by volume. The developed equations are valid for both oil in water and water in oil types of emulsions.Emulsions exhibiting electroviscous effect (increase in viscosity due to presence of electric charge on the surface of droplets) could also be described adequately by these equations. The proposed equations have the ability to predict the emulsionviscosity as a function of dispersed?phase concentration and shear rate if the flow curve (shear stress versus shear rate plot) is known experimentally at a single value of the dispersed?phase concentration.

Rajinder Pal; Edward Rhodes

1989-01-01T23:59:59.000Z

296

Accelerating cosmological expansion from shear viscosity  

E-Print Network [OSTI]

The dissipation of energy from local velocity perturbations in the cosmological fluid affects the time evolution of spatially averaged fluid dynamic fields and the cosmological solution of Einstein's field equations. We show how this backreaction effect depends on shear viscosity and other material properties of the dark sector, as well as the spectrum of perturbations. If sufficiently large, this effect could account for the acceleration of the cosmological expansion.

Floerchinger, Stefan; Wiedemann, Urs Achim

2014-01-01T23:59:59.000Z

297

Shear viscosity of a nonperturbative gluon plasma  

E-Print Network [OSTI]

Shear viscosity is evaluated within a model of the gluon plasma, which is based entirely on the stochastic nonperturbative fields. We consider two types of excitations of such fields, which are characterized by the thermal correlation lengths ~ 1/(g^2 T) and ~ 1/(g^4 T), where "g" is the finite-temperature Yang-Mills coupling. Excitations of the first type correspond to the genuine nonperturbative stochastic Yang-Mills fields, while excitations of the second type mimic the known result for the shear viscosity of the perturbative Yang-Mills plasma. We show that the excitations of the first type produce only an O(g^{10})-correction to this result. Furthermore, a possible interference between excitations of these two types yields a somewhat larger, O(g^7), correction to the leading perturbative Yang-Mills result. Our analysis is based on the Fourier transformed Euclidean Kubo formula, which represents an integral equation for the shear spectral density. This equation is solved by seeking the spectral density in the form of the Lorentzian Ans\\"atze, whose widths are defined by the two thermal correlation lengths and by their mean value, which corresponds to the said interference between the two types of excitations. Thus, within one and the same formalism, we reproduce the known result for the shear viscosity of the perturbative Yang-Mills plasma, and account for possible nonperturbative corrections to it.

Dmitri Antonov

2012-02-10T23:59:59.000Z

298

Viscosity of a Suspension with Internal Rotation  

Science Journals Connector (OSTI)

When an insulating particle immersed into a low conducting liquid is submitted to a sufficiently high DC field E it can rotate spontaneously around itself along any axis perpendicular to the electric field. This symmetry break is known as Quincke rotation and could have important consequences on the rheology of such a suspension of particles (insulating particles dispersed in a slightly conducting liquid). Indeed if the suspension is subject to a shear rate and a DC electric field is applied in the velocity gradient direction the spin rate of the particles is greater than in the absence of an E field so that the macroscopic spin rate of the particles drives the suspending liquid and thus leads to a decrease of the apparent viscosity of the suspension. The purpose of this paper is to provide a relation between the apparent viscosity of the suspension the spin rate of the particles and the E field intensity. The predictions of the model are compared to experimental data which have been obtained on a suspension of PMMA particles dispersed in a low polar dielectric liquid. The agreement between experiments and theory is rather good even if the model overestimates the viscosity decrease induced by the field.

Lemaire Elisabeth; Lobry Laurent; Peters Franois

2008-01-01T23:59:59.000Z

299

RELAP-7 Numerical Stabilization: Entropy Viscosity Method  

SciTech Connect (OSTI)

The RELAP-7 code is the next generation nuclear reactor system safety analysis code being developed at the Idaho National Laboratory (INL). The code is based on the INL's modern scientific software development framework, MOOSE (Multi-Physics Object Oriented Simulation Environment). The overall design goal of RELAP-7 is to take advantage of the previous thirty years of advancements in computer architecture, software design, numerical integration methods, and physical models. The end result will be a reactor systems analysis capability that retains and improves upon RELAP5's capability and extends the analysis capability for all reactor system simulation scenarios. RELAP-7 utilizes a single phase and a novel seven-equation two-phase flow models as described in the RELAP-7 Theory Manual (INL/EXT-14-31366). The basic equation systems are hyperbolic, which generally require some type of stabilization (or artificial viscosity) to capture nonlinear discontinuities and to suppress advection-caused oscillations. This report documents one of the available options for this stabilization in RELAP-7 -- a new and novel approach known as the entropy viscosity method. Because the code is an ongoing development effort in which the physical sub models, numerics, and coding are evolving, so too must the specific details of the entropy viscosity stabilization method. Here the fundamentals of the method in their current state are presented.

R. A. Berry; M. O. Delchini; J. Ragusa

2014-06-01T23:59:59.000Z

300

Reduction of viscosity in suspension of swimming bacteria.  

SciTech Connect (OSTI)

Measurements of the shear viscosity in suspensions of swimming Bacillus subtilis in free-standing liquid films have revealed that the viscosity can decrease by up to a factor of 7 compared to the viscosity of the same liquid without bacteria or with nonmotile bacteria. The reduction in viscosity is observed in two complementary experiments: one studying the decay of a large vortex induced by a moving probe and another measuring the viscous torque on a rotating magnetic particle immersed in the film. The viscosity depends on the concentration and swimming speed of the bacteria.

Aranson, I. S.; Sokolov, A.; Chen, L.; Jin, Q.; Materials Science Division

2009-09-29T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Bulk viscosity of QCD matter near the critical temperature  

E-Print Network [OSTI]

Kubo's formula relates bulk viscosity to the retarded Green's function of the trace of the energy-momentum tensor. Using low energy theorems of QCD for the latter we derive the formula which relates the bulk viscosity to the energy density and pressure of hot matter. We then employ the available lattice QCD data to extract the bulk viscosity as a function of temperature. We find that close to the deconfinement temperature bulk viscosity becomes large, with viscosity-to-entropy ratio zeta/s about 1.

D. Kharzeev; K. Tuchin

2007-05-29T23:59:59.000Z

302

Reduction of viscosity in suspension of swimming bacteria.  

SciTech Connect (OSTI)

Measurements of the shear viscosity in suspensions of swimming Bacillus subtilis in free-standing liquid films have revealed that the viscosity can decrease by up to a factor of 7 compared to the viscosity of the same liquid without bacteria or with nonmotile bacteria. The reduction in viscosity is observed in two complementary experiments: one studying the decay of a large vortex induced by a moving probe and another measuring the viscous torque on a rotating magnetic particle immersed in the film. The viscosity depends on the concentration and swimming speed of the bacteria.

Sokolov, A.; Aranson, I. S.; Materials Science Division; Illinois Inst. of Tech.

2009-01-01T23:59:59.000Z

303

The Role of Viscosity in TATB Hot Spot Ignition  

SciTech Connect (OSTI)

The role of dissipative effects, such as viscosity, in the ignition of high explosive pores is investigated using a coupled chemical, thermal, and hydrodynamic model. Chemical reactions are tracked with the Cheetah thermochemical code coupled to the ALE3D hydrodynamic code. We perform molecular dynamics simulations to determine the viscosity of liquid TATB. We also analyze shock wave experiments to obtain an estimate for the shock viscosity of TATB. Using the lower bound liquid-like viscosities, we find that the pore collapse is hydrodynamic in nature. Using the upper bound viscosity from shock wave experiments, we find that the pore collapse is closest to the viscous limit.

Fried, L E; Zepeda-Ruis, L; Howard, W M; Najjar, F; Reaugh, J E

2011-08-02T23:59:59.000Z

304

nuclear navy  

National Nuclear Security Administration (NNSA)

After operating for 34 years and training over 14,000 sailors, the Department of Energy S1C Prototype Reactor Site in Windsor, Connecticut, was returned to "green field"...

305

VISCOSITY IN PLANETARY RINGS WITH SPINNING SELF-GRAVITATING PARTICLES  

SciTech Connect (OSTI)

Using local N-body simulation, we examine viscosity in self-gravitating planetary rings. We investigate the dependence of viscosity on various parameters in detail, including the effects of particle surface friction. In the case of self-gravitating rings with low optical depth, viscosity is determined by particle random velocity. Inclusion of surface friction slightly reduces both random velocity and viscosity when particle random velocity is determined by inelastic collisions, while surface friction slightly increases viscosity when gravitational encounters play a major role in particle velocity evolution, so that viscous heating balances with increased energy dissipation at collisions due to surface friction. We find that including surface friction changes viscosity in dilute rings up to a factor of about two. In the case of self-gravitating dense rings, viscosity is significantly increased due to the effects of gravitational wakes, and we find that varying restitution coefficients also change viscosity in such dense rings by a factor of about two. We confirm that our numerical results for viscosity in dense rings with gravitational wakes can be well approximated by a semianalytic expression that is consistent with a previously obtained formula. However, we find that this formula seems to overestimate viscosity in dense rings far from the central planet, where temporary gravitational aggregates form. We derive semianalytic expressions that reproduce our numerical results well for the entire range of examined parameters.

Yasui, Yuki; Ohtsuki, Keiji [Department of Earth and Planetary Sciences, Kobe University, Kobe 657-8501 (Japan); Daisaka, Hiroshi [Graduate School of Commerce and Management, Hitotsubashi University, Tokyo 186-8601 (Japan)

2012-05-15T23:59:59.000Z

306

From Thermodynamics to the Bound on Viscosity  

E-Print Network [OSTI]

We show that the generalized second law of thermodynamics may shed much light on the mysterious Kovtun-Son-Starinets (KSS) bound on the ratio of viscosity to entropy density. In particular, we obtain the lower bound $\\eta/s +O(\\eta^3/s^3)\\geq 1/4\\pi$. Furthermore, for conformal field theories we obtain a new fundamental bound on the value of the relaxation coefficient $\\tau_{\\pi}$ of causal hydrodynamics, which has been the focus of much recent attention: $(\\tau_{\\pi}T)^2\\geq {{(\\sqrt{3}-1)}/{2\\pi^2}}$.

Shahar Hod

2009-07-07T23:59:59.000Z

307

A New Approach to Cosmological Bulk Viscosity  

E-Print Network [OSTI]

We examine the cosmological consequences of an alternative to the standard expression for bulk viscosity, one which was proposed to avoid the propagation of superluminal signals without the necessity of extending the space of variables of the theory. The Friedmann equation is derived for this case, along with an expression for the effective pressure. We find solutions for the evolution of the density of a viscous component, which differs markedly from the case of conventional Eckart theory; our model evolves toward late-time phantom-like behavior with a future singularity. Entropy production is addressed, and some similarities and differences to approaches based on the Mueller-Israel-Stewart theory are discussed.

Disconzi, Marcelo M; Scherrer, Robert J

2014-01-01T23:59:59.000Z

308

Viscosity Oscillations and Hysteresis in Dilute Emulsions  

Science Journals Connector (OSTI)

We show that the viscosity of a dilute emulsion exhibits oscillations and hysteresis as a function of the shear rate. This results from breaking up of droplets in response to the shear flow. The new phenomena we describe are generic and do not depend on a specific choice of model. The interesting dependence of the basic properties of a dilute emulsion on the shear rate results from the fact that the immersed droplets must break when the shear rate applied to the system is large enough.

Yiftah Navot and Moshe Schwartz

1997-12-15T23:59:59.000Z

309

The viscosity bound in string theory  

E-Print Network [OSTI]

The ratio of shear viscosity to entropy density $\\eta/s$ of any material in nature has been conjectured to have a lower bound of $1/4\\pi$, the famous KSS bound. We examine string theory models for evidence in favour of and against this conjecture. We show that in a broad class of models quantum corrections yield values of $\\eta/s$ just above the KSS bound. However, incorporating matter fields in the fundamental representation typically leads to violations of this bound. We also outline a program to extend AdS/CFT methods to RHIC phenomenology.

Aninda Sinha; Robert C. Myers

2009-07-27T23:59:59.000Z

310

Viscosity of the Electron Gas in Metals  

Science Journals Connector (OSTI)

With a view toward explaining measurements of ultrasonic attenuation in metals, the coefficient of shear viscosity of a free electron gas interacting with thermal phonons and local crystal inhomogeneities is computed. The methods employed are essentially those developed for the problem of electrical conductivity. By means of a variational principle, a general formal solution is obtained. The effective mean free path is found to be somewhat smaller and of a somewhat more complicated (though not qualitatively different) temperature dependence than that associated with electrical conduction. The effect of a transverse magnetic field is determined for the case when a time of relaxation exists.

M. S. Steinberg

1958-03-01T23:59:59.000Z

311

MHK Projects/US Navy Wave Energy Technology WET Program at Marine Corps  

Open Energy Info (EERE)

US Navy Wave Energy Technology WET Program at Marine Corps US Navy Wave Energy Technology WET Program at Marine Corps Base Hawaii MCBH < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":21.4164,"lon":-157.784,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

312

Design of impressed current cathodic protection (ICCP) systems for U.S. Navy hulls  

SciTech Connect (OSTI)

The goal of impressed current cathodic protection (ICCP) design for ship hulls, under the Navy Ship's Technical Manual (NSTM, Chapter 633), is to provide a uniform potential distribution at {minus}0.85 V, {+-}0.05 V, versus a silver/silver chloride (Ag/AgCl) reference cell, over the wetted hull surface during all operational aspects of an active ship. To accomplish this, the physical scale modeling (PSM) technique, combined with a rigid design protocol, has been used extensively by the US Navy to provide optimal and retrofit upgrade designs of ICCP systems for hulls. The ICCP design guidance, provided by the protocol, defines the hull properties, hull damage and general power supply requirements. PSM is utilized to determine optimal placement of ICCP components (anodes and reference cells) and to evaluate performance for up to a 15% wetted hull coatings loss under static (pierside) and dynamic (underway) conditions. Data are provided which illustrate the use of the design protocol criteria, along with the integrated PSM technique, to determine ICCP system design and evaluate performance.

Lucas, K.E.; Thomas, E.D.; Kaznoff, A.I.; Hogan, E.A.

1999-07-01T23:59:59.000Z

313

Recovery of Navy distillate fuel from reclaimed product. Volume I. Technical discussion  

SciTech Connect (OSTI)

In an effort to assist the Navy to better utilize its waste hydrocarbons, NIPER, with support from the US Department of Energy, is conducting research designed to ultimately develop a practical technique for converting Reclaimed Product (RP) into specification Naval Distillate Fuel (F-76). The first phase of the project was focused on reviewing the literature and available information from equipment manufacturers. The literature survey has been carefully culled for methodology applicable to the conversion of RP into diesel fuel suitable for Navy use. Based upon the results of this study, a second phase has been developed and outlined in which experiments will be performed to determine the most practical recycling technologies. It is realized that the final selection of one particular technology may be site-specific due to vast differences in RP volume and available facilities. A final phase, if funded, would involve full-scale testing of one of the recommended techniques at a refueling depot. The Phase I investigations are published in two volumes. Volume 1, Technical Discussion, includes the narrative and Appendices I and II. Appendix III, a detailed Literature Review, includes both a narrative portion and an annotated bibliography containing about 800 referenvces and abstracts. This appendix, because of its volume, has been published separately as Volume 2. 18 figures, 4 tables.

Brinkman, D.W.; Whisman, M.L.

1984-11-01T23:59:59.000Z

314

Recovery of Navy distillate fuel from reclaimed product. Volume II. Literature review  

SciTech Connect (OSTI)

In an effort to assist the Navy to better utilize its waste hydrocarbons, NIPER, with support from the US Department of Energy, is conducting research designed to ultimately develop a practical technique for converting Reclaimed Product (RP) into specification Naval Distillate Fuel (F-76). This first phase of the project was focused on reviewing the literature and available information from equipment manufacturers. The literature survey has been carefully culled for methodology applicable to the conversion of RP into diesel fuel suitable for Navy use. Based upon the results of this study, a second phase has been developed and outlined in which experiments will be performed to determine the most practical recycling technologies. It is realized that the final selection of one particular technology may be site-specific due to vast differences in RP volume and available facilities. A final phase, if funded, would involve full-scale testing of one of the recommended techniques at a refueling depot. The Phase I investigations are published in two volumes. Volume 1, Technical Discussion, includes the narrative and Appendices I and II. Appendix III, a detailed Literature Review, includes both a narrative portion and an annotated bibliography containing about 800 references and abstracts. This appendix, because of its volume, has been published separately as Volume 2.

Brinkman, D.W.; Whisman, M.L.

1984-11-01T23:59:59.000Z

315

Special Feature:  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Five Five Questions for Sudip Dosanjh Special Feature: Five Questions for Sudip Dosanjh September 27, 2013 Sudip-wide.jpg Sudip Dosanjh Sudip Dosanjh is Director of the National Energy Research Scientific Computing (NERSC) Center at Lawrence Berkeley National Laboratory. NERSC's mission is to accelerate scientific discovery at the U.S. Department of Energy's Office of Science through high performance computing and extreme data analysis. NERSC deploys leading-edge computational and data resources for over 4,700 users from a broad range of disciplines. As a result of this support for science, NERSC users published 1,900 research papers in 2012. To continue its mission, NERSC will be partnering with computer companies to develop and deploy pre-exascale and exascale systems during the next

316

Special Page  

Gasoline and Diesel Fuel Update (EIA)

Since many of you are probably interested in heating fuels for the winter, Since many of you are probably interested in heating fuels for the winter, EIA has also designed specific or special web pages highlighting certain fuels. We find during certain times of the year, users look for certain energy information. For example, last year when heating prices spiked during Jan and Feb, we designed a page to highlight information on propane and heating oil. We also have a gasoline and diesel page because these fuels are important during the driving season. The page has information about stocks, production, imports and prices. We've provided links to various agencies/organizations and sites which may be relevant to getting tracking other information during the heating season such as SPR, LIHEAP, or associations such as API, PMAA, or the

317

Bulk viscosity of anisotropically expanding hot QCD plasma  

SciTech Connect (OSTI)

The bulk viscosity, {zeta} and its ratio with the shear viscosity, {zeta}/{eta} have been studied in an anisotropically expanding pure glue plasma in the presence of turbulent color fields. It has been shown that the anisotropy in the momentum distribution function of gluons, which has been determined from a linearized transport equation eventually leads to the bulk viscosity. For the isotropic (equilibrium) state, a recently proposed quasiparticle model of pure SU(3) lattice QCD equation of state has been employed where the interactions are encoded in the effective fugacity. It has been argued that the interactions present in the equation of state, significantly contribute to the bulk viscosity. Its ratio with the shear viscosity is significant even at 1.5T{sub c}. Thus, one needs to take in account the effects of the bulk viscosity while studying the hydrodynamic expansion of quark-gluon plasma in the Relativistic Heavy Ion Collider and the Large Hadron Collider.

Chandra, Vinod [Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai-400005 (India)

2011-11-01T23:59:59.000Z

318

Shear viscosity and out of equilibrium dynamics  

E-Print Network [OSTI]

Using Grad's method, we calculate the entropy production and derive a formula for the second-order shear viscosity coefficient in a one-dimensionally expanding particle system, which can also be considered out of chemical equilibrium. For a one-dimensional expansion of gluon matter with Bjorken boost invariance, the shear tensor and the shear viscosity to entropy density ratio $\\eta/s$ are numerically calculated by an iterative and self-consistent prescription within the second-order Israel-Stewart hydrodynamics and by a microscopic parton cascade transport theory. Compared with $\\eta/s$ obtained using the Navier-Stokes approximation, the present result is about 20% larger at a QCD coupling $\\alpha_s \\sim 0.3$(with $\\eta/s\\approx 0.18$) and is a factor of 2-3 larger at a small coupling $\\alpha_s \\sim 0.01$. We demonstrate an agreement between the viscous hydrodynamic calculations and the microscopic transport results on $\\eta/s$, except when employing a small $\\alpha_s$. On the other hand, we demonstrate that for such small $\\alpha_s$, the gluon system is far from kinetic and chemical equilibrium, which indicates the break down of second-order hydrodynamics because of the strong noneqilibrium evolution. In addition, for large $\\alpha_s$ ($0.3-0.6$), the Israel-Stewart hydrodynamics formally breaks down at large momentum $p_T\\gtrsim 3$ GeV but is still a reasonably good approximation.

Andrej El; Zhe Xu; Carsten Greiner; Azwinndini Muronga

2008-12-15T23:59:59.000Z

319

Predicting human blood viscosity in silico  

SciTech Connect (OSTI)

Cellular suspensions such as blood are a part of living organisms and their rheological and ?ow characteristics determine and affect majority of vital functions. The rheological and ?ow properties of cell suspensions are determined by collective dynamics of cells, their structure or arrangement, cell properties and interactions. We study these relations for blood in silico using a mesoscopic particle-based method and two different models (multi-scale/low-dimensional) of red blood cells. The models yield accurate quantitative predictions of the dependence of blood viscosity on shear rate and hematocrit. We explicitly model cell aggregation interactions and demonstrate the formation of reversible rouleaux structures resulting in a tremendous increase of blood viscosity at low shear rates and yield stress, in agreement with experiments. The non-Newtonian behavior of such cell suspensions (e.g., shear thinning, yield stress) is analyzed and related to the suspensions microstructure, deformation and dynamics of single cells. We provide the ?rst quantitative estimates of normal stress differences and magnitude of aggregation forces in blood. Finally, the ?exibility of the cell models allows them to be employed for quantitative analysis of a much wider class of complex ?uids including cell, capsule, and vesicle suspensions.

Fedosov, Dmitry A.; Pan, Wenxiao; Caswell, Bruce; Gompper, Gerhard; Karniadakis, George E.

2011-07-19T23:59:59.000Z

320

Viscosity of Polymer Solutions: Scaling Relationships  

Science Journals Connector (OSTI)

Scaling in terms of temperature composition and molecular weight variables has practical and fundamental significance. The hydrodynamics of hard sphere systems suggest the scaling of the dimensionless ratio ? sp /(c[?]) in terms of a concentration parameter ?(M T)=1/[?]. Solutions of flexible chains indicate the appropriateness of this equation at ? and sub ? conditions but otherwise a molecular weight dependence of ? differing from that of [?] ?1 . It is possible however to define a corresponding states principle through an empirical relation between ? and M. In this case 1/??k H [?] with k H the Huggins parameter. This scheme extends in some cases up to the melt. One of us (L.A.U.) has previously considered melt viscosities of low and high molecular weight systems in terms of free volume concepts combined with theoretical liquid state results and with T g scaling the temperature. An extension to solutions yields an explicit viscosity?concentration?temperature function. Gratifying agreement with experiment can be seen. Structural changes generated by temperature concentration and pressure changes are reflected in the scaling parameters.

L. A. Utracki; R. Simha

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Viscosity of isotropic hard particle fluids  

Science Journals Connector (OSTI)

A kinetic theory for the frequency?dependent shear viscosity ?(?) of isotropic fluids composed of non?spherical hard convex bodies is extended in two ways. First the theory is reformulated to allow ?(?) to be expressed directly in terms of matrix elements involving the shear stress tensor rather than in terms of the transverse momentum correlation function. Second relaxation of the antisymmetric component of the stress due to coupling with spin angular momentum is explicitly incorporated; this corrects an error in a previous version of the theory. The revised kinetic theory is compared with computer simulations for hard ellipsoids of revolution of axial ratio 2 3 5 and 10. Both the symmetric and antisymmetric contributions to ?(?) are well reproduced. Coupling with the collective molecular second?rank orientation tensor remains an important factor in determining the variation of ?(?) from high to low frequencies; the prediction of the magnitude of the associated dip in ?(?) is significantly improved. The new version of the theory is also more successful in predicting values of the zero?frequency shear viscosity ? the shear?orientation coupling parameter R and the StokesEinstein (Debye) products D s? and D r?.

Michael P. Allen; Philip J. Camp; Carl P. Mason; Glenn T. Evans; Andrew J. Masters

1996-01-01T23:59:59.000Z

322

Anomalous viscosity of an expanding quark-gluon plasma  

E-Print Network [OSTI]

We argue that an expanding quark-gluon plasma has an anomalous viscosity, which arises from interactions with dynamically generated colour fields. The anomalous viscosity dominates over the collisional viscosity for large velocity gradients or weak coupling. This effect may provide an explanation for the apparent near perfect liquidity of the matter produced in nuclear collisions at RHIC without the assumption that it is a strongly coupled state.

M. Asakawa; S. A. Bass; B. Mller

2007-02-02T23:59:59.000Z

323

Viscosity of an ideal relativistic quantum fluid: A perturbative study  

E-Print Network [OSTI]

We show that a quantized ideal fluid will generally exhibit a small but non-zero viscosity due to the backreaction of quantum soundwaves on the background. We use an effective field theory expansion to estimate this viscosity to first order in perturbation theory. We discuss our results, and whether this estimate can be used to obtain a more model-independent estimate of the "quantum bound" on the viscosity of physical systems

Giorgio Torrieri

2011-12-17T23:59:59.000Z

324

Non-invasive fluid density and viscosity measurement  

SciTech Connect (OSTI)

The noninvasively measurement of the density and viscosity of static or flowing fluids in a section of pipe such that the pipe performs as the sensing apparatus, is described. Measurement of a suitable structural vibration resonance frequency of the pipe and the width of this resonance permits the density and viscosity to be determined, respectively. The viscosity may also be measured by monitoring the decay in time of a vibration resonance in the pipe.

Sinha, Dipen N. (Los Alamos, NM)

2012-05-01T23:59:59.000Z

325

Computing the viscosity of the QGP on the lattice  

E-Print Network [OSTI]

I review the recent progress made in calculating shear and bulk viscosity on the lattice, and discuss ways to improve the calculation.

Harvey B. Meyer

2008-05-29T23:59:59.000Z

326

On Eling-Oz formula for the holographic bulk viscosity  

E-Print Network [OSTI]

Recently Eling and Oz [1] proposed a simple formula for the bulk viscosity of holographic plasma. They argued that the formula is valid in the high temperature (near-conformal) regime, but is expected to break down at low temperatures. We point out that the formula is in perfect agreement with the previous computations of the bulk viscosity of the cascading plasma [2,3], as well as with the previous computations of the bulk viscosity of N=2^* plasma [4,5]. In the latter case it correctly reproduces the critical behaviour of the bulk viscosity in the vicinity of the critical point with the vanishing speed of sound.

Alex Buchel

2011-03-19T23:59:59.000Z

327

DWPF STARTUP FRIT VISCOSITY MEASUREMENT ROUND ROBIN RESULTS  

SciTech Connect (OSTI)

A viscosity standard is needed to replace the National Institute of Standards and Technology (NIST) glasses currently being used to calibrate viscosity measurement equipment. The current NIST glasses are either unavailable or less than ideal for calibrating equipment to measure the viscosity of high-level waste glasses. This report documents the results of a viscosity round robin study conducted on the Defense Waste Processing Facility (DWPF) startup frit. DWPF startup frit was selected because its viscosity-temperature relationship is similar to most DWPF and Hanford high-level waste glass compositions. The glass underwent grinding and blending to homogenize the large (100 lb) batch. Portions of the batch were supplied to the laboratories (named A through H) for viscosity measurements following a specified temperature schedule with a temperature range of 1150 C to 950 C and with an option to measure viscosity at lower temperatures if their equipment was capable of measuring at the higher viscosities. Results were used to fit the Vogel-Tamman-Fulcher and Arrhenius equations to viscosity as a function of temperature for the entire temperature range of 460 C through 1250 C as well as the limited temperature interval of approximately 950 C through 1250 C. The standard errors for confidence and prediction were determined for the fitted models.

Crum, Jarrod V.; Edwards, Tommy B.; Russell, Renee L.; Workman, Phyllis J.; Schweiger, Michael J.; Schumacher, Ray F.; Smith, Donald E.; Peeler, David K.; Vienna, John D.

2012-07-31T23:59:59.000Z

328

Viscosity measurements and empirical predictions for coal slags  

SciTech Connect (OSTI)

Slag viscosity in slagging coal gasifier is an important factor affecting the gasification regime and operating cost. Most of the empirical viscosity models of coal slags that are available in the literature are applicable to only limited ranges of temperature and composition. To develop a reliable slag viscosity model, additional data are needed. Slag viscosity was measured under air or reducing atmosphere (calculated pO2~1.2?10-12 atm at 1400C) at temperatures in the range of 1150-1550C on 63 statistically designed slags, including 5 actual coal slag compositions and 4 validation slag compositions. The Arrhenius equation, with Arrhenius coefficients A = constant and B expressed as linear function of mass fractions of nine major components was used to fit the viscosity/temperature data. This Arrhenius relationship represents the viscositytemperature relationship of tested slags reasonably well, = 0.981 (reducing atmosphere) and = 0.974 (air atmosphere). The validation of the model with four randomly selected slags (two from the SciGlass database and two from experimental design) indicated an accurately measured viscosity-temperature data and a fairly good predictive performance of slag viscosity models over designed compositions. The capability of the developed model to predict the viscosity of coal slags under reducing atmosphere was found to be a superior to a number of the most commonly used empirical models in the literature that are based on simplified oxide melts and British or Australian coal ash slags.

Matyas, Josef; Sundaram, S. K.; Rodriguez, Carmen P.; Heredia-Langner, Alejandro; Arrigoni, Benjamin M.

2009-10-25T23:59:59.000Z

329

Relation between viscosity and stability for heavy oil emulsions.  

E-Print Network [OSTI]

??The relation between viscosity and stability has been hics. found by investigating the effect of surfactant concentration on emulsion stability. Based on the Bingham plastic (more)

Ye, Sherry Qianwen

2012-01-01T23:59:59.000Z

330

Randall-Sundrum Model in the Presence of a Brane Bulk Viscosity  

E-Print Network [OSTI]

The presence of a bulk viscosity for the cosmic fluid on a single Randall-Sundrum brane is considered. The spatial curvature is assumed to be zero. The five-dimensional Friedmann equation is derived, together with the energy conservation equation for the viscous fluid. These governing equations are solved for some special cases: (i) in the low-energy limit when the matter energy density is small compared with brane tension; (ii) for a matter-dominated universe, and (iii) for a radiation-dominated universe. Rough numerical estimates, for the extreme case when the universe is at its Planck time, indicate that the viscous effect can be significant.

Brevik, I

2004-01-01T23:59:59.000Z

331

Spring-Supported thrust bearings for hydroelectric generators: Influence of oil viscosity on power loss  

Science Journals Connector (OSTI)

Energy losses in the spring-supported thrust bearings used in many large hydroelectric generator units were estimated to be small compared to the rate of energy (power) generation but, nevertheless, commercially significant. The purpose of the present study was examine the influence of oil viscosity on power loss. Experiments were performed using a test facility containing a thrust bearing of 1.2 m outer diameter and both power loss and temperature rise were measured for oils of ISO grade 32, 46 and 68, all at various oil pot temperatures. Power loss and temperature rise decreased as the viscosity of the oil in the oil pot decreased. Minimum oil film thicknesses were predicted with numerical analysis using a specialized software package (GENMAT). The accuracy of this calculation was supported by the good agreement between the temperature rise predicted by numerical analysis and the experimentally determined values. Provided film thickness were adequate to avoid any danger of wiping (10 15 ?m), the present study showed clearly that significant energy savings could be realized in the large spring-supported thrust bearings and associated guide bearings by lowering oil viscosities.

J.H. Ferguson; J.H. Yuan; J.B. Medley

1998-01-01T23:59:59.000Z

332

Like this post? Subscribe to our RSS feed and stay up to date. Navy Develops Battery that Runs on Mud  

E-Print Network [OSTI]

by Joshua S Hill Published on April 20th, 2010 in Energy & Fuel 1 Comment 5/4/2010 Navy Develops Battery and efficient reliable alternative battery avoiding the harmful impact that standard batteries and fuels have underwater vehicle that will settle on the seafloor and recharge its batteries using this fuel cell approach

Lovley, Derek

333

Residential Energy-Efficiency Equipment Shown to be a Good Investment for U.S. Navy (Fact Sheet)  

SciTech Connect (OSTI)

A two-year project between the National Renewable Energy Laboratory (NREL) and the U.S. Navy's Naval Facilities Engineering Command (NAVFAC) to demonstrate energy efficiency technologies at bases in Hawaii and Guam resulted in the identification of several promising options for reducing energy use and costs, including whole-house energy efficiency retrofits.

Not Available

2014-04-01T23:59:59.000Z

334

Reducing Idle Power Consumption in Office Spaces Saves U.S. Navy in Energy Costs (Fact Sheet)  

SciTech Connect (OSTI)

As part of a two-year project to demonstrate energy efficiency measures, renewable energy generation, and energy systems integration, the National Renewable Energy Laboratory (NREL) has identified advanced plug load controls as a promising technology for reducing energy use and related costs in the U.S. Navy's Naval Facilities Engineering Command (NAVFAC) office spaces.

Not Available

2014-04-01T23:59:59.000Z

335

Vanishing Viscosity Method for Transonic Flow  

E-Print Network [OSTI]

A vanishing viscosity method is formulated for two-dimensional transonic steady irrotational compressible fluid flows with adiabatic constant $\\gamma\\in [1,3)$. This formulation allows a family of invariant regions in the phase plane for the corresponding viscous problem, which implies an upper bound uniformly away from cavitation for the viscous approximate velocity fields. Mathematical entropy pairs are constructed through the Loewner-Morawetz relation by entropy generators governed by a generalized Tricomi equation of mixed elliptic-hyperbolic type, and the corresponding entropy dissipation measures are analyzed so that the viscous approximate solutions satisfy the compensated compactness framework. Then the method of compensated compactness is applied to show that a sequence of solutions to the artificial viscous problem, staying uniformly away from stagnation, converges to an entropy solution of the inviscid transonic flow problem.

Gui-Qiang Chen; Marshall Slemrod; Dehua Wang

2006-10-07T23:59:59.000Z

336

Saturation of elliptic flow and shear viscosity  

E-Print Network [OSTI]

Effect of shear viscosity on elliptic flow is studied in causal dissipative hydrodynamics in 2+1 dimensions. Elliptic flow is reduced in viscous dynamics. Causal evolution of minimally viscous fluid ($\\eta/s$=0.08), can explain the PHENIX data on elliptic flow in 16-23% Au+Au collisions up to $p_T\\approx$3.6 GeV. In contrast, ideal hydrodynamics, can explain the same data only up to $p_T\\approx$1.5 GeV. $p_T$ spectra of identified particles are also better explained in minimally viscous fluid than in ideal dynamics. However, saturation of elliptic flow at large $p_T$ is not reproduced.

A. K. Chaudhuri

2007-08-09T23:59:59.000Z

337

Jet momentum balance independent of shear viscosity  

E-Print Network [OSTI]

Jet momentum balance measurements, such as those recently performed by the CMS collaboration, provide an opportunity to quantify the energy transferred from a parton shower to the underlying medium in heavy-ion collisions. Specifically, I argue that the Cooper-Frye freezeout distribution associated with the energy and momentum deposited by the parton shower is controlled to a significant extent by the distribution of the underlying bulk matter and independent of the details of how deposited energy is redistributed in the medium, which is largely determined by transport coefficients such as shear viscosity. Thus by matching the distribution of momentum associated with the secondary jet in such measurements to the thermal distribution of the underlying medium, one can obtain a model independent estimate on the amount of parton shower energy deposited.

R. B. Neufeld

2011-08-31T23:59:59.000Z

338

On bulk viscosity and moduli decay  

E-Print Network [OSTI]

This pedagogically intended lecture, one of four under the header "Basics of thermal QCD", reviews an interesting relationship, originally pointed out by Bodeker, that exists between the bulk viscosity of Yang-Mills theory (of possible relevance to the hydrodynamics of heavy ion collision experiments) and the decay rate of scalar fields coupled very weakly to a heat bath (appearing in some particle physics inspired cosmological scenarios). This topic serves, furthermore, as a platform on which a number of generic thermal field theory concepts are illustrated. The other three lectures (on the QCD equation of state and the rates of elastic as well as inelastic processes experienced by heavy quarks) are recapitulated in brief encyclopedic form.

M. Laine

2010-07-15T23:59:59.000Z

339

Mr. Edward L. Whelan Director, Real Estate Division Department of The Navy  

Office of Legacy Management (LM)

Edward L. Whelan Edward L. Whelan Director, Real Estate Division Department of The Navy Eastern Division Naval'Facilities Engineering Command 90 Church Street New York, New York 10007 Subject: tqiddlesex Sampling Plant Mountain Avenue, Borough of Pliddlesex Middlesex County, Dew Jersey B-NJ-514 Dear Mr. Whelan: Confirming telephone conversation of January 10, 1969, between you and G. S. Brackett of this office, tic custody and accountability of the KC property listed in enclosures to the January 3, 1969, letter to you from General Services Administration,. subject as above, is transferred to the ,.~e;rtment of The iiavy, United States Elarine Corps, effective January 3, l . - Very truly yours, AU:GSB . .>;*, -=lS,' !. . . -, i$x EF$- 5 I' " ,' . 0 y;;;:

340

Note: Precision viscosity measurement using suspended microchannel resonators  

SciTech Connect (OSTI)

We report the characterization of a suspended microchannel resonator (SMR) for viscosity measurements in a low viscosity regime (<10 mPa s) using two measurement schemes. First, the quality factor (Q-factor) of the SMR was characterized with glycerol-water mixtures. The measured Q-factor at 20 Degree-Sign C exhibits a bilinear behavior with the sensitivity of 1281 (mPa s){sup -1} for a lower (1-4 mPa s) and 355 (mPa s){sup -1} for a higher viscosity range (4-8 mPa s), respectively. The second scheme is the vibration amplitude monitoring of the SMR running in a closed loop feedback. When compared in terms of the measurement time, the amplitude-based measurement takes only 0.1 {approx} 1 ms while the Q-factor-based measurement takes {approx}30 s. However, the viscosity resolution of the Q-factor-based measurement is at least three times better than the amplitude-based measurement. By comparing the Q-factors of heavy water and 9.65 wt.% glycerol-water mixture that have very similar viscosities but different densities, we confirmed that the SMR can measure the dynamic viscosity without the density correction. The obtained results demonstrate that the SMR can measure the fluid viscosity with high precision and even real-time monitoring of the viscosity change is possible with the amplitude-based measurement scheme.

Lee, I.; Lee, J. [Department of Mechanical Engineering, Sogang University, Seoul 121-742 (Korea, Republic of); Park, K. [Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, Kingston, Rhode Island 02881 (United States)

2012-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Leptonic contribution to the bulk viscosity of nuclear matter  

SciTech Connect (OSTI)

For {beta}-equilibrated nuclear matter we estimate the contribution to the bulk viscosity from purely leptonic processes, namely the conversion of electrons to and from muons. For oscillation frequencies in the kilohertz range, we find that this process provides the dominant contribution to the bulk viscosity when the temperature is well below the critical temperature for superconductivity or superfluidity of the nuclear matter.

Alford, Mark G.; Good, Gerald [Physics Department, Washington University, St. Louis, Missouri 63130 (United States)

2010-11-15T23:59:59.000Z

342

1 Visco-plastic rheology 1.1 Effective viscosity  

E-Print Network [OSTI]

1 Visco-plastic rheology 1.1 Effective viscosity Rheology specifies the relationship between viscosity eff, = 2eff , (2) which includes viscous and plastic components, 1 eff = 1 visc + 1 plast . (3) Also the strain rate tensor can be split into viscous and plastic part, = visc + plast , (4) where

Cerveny, Vlastislav

343

Viscosity of concentrated suspensions of sphere/rod mixtures  

SciTech Connect (OSTI)

This paper discusses the viscosity of concentrated suspensions of sphere/rod mixtures by adopting the Thomas relations for spheres and Milliken`s for randomly oriented rods with aspect ratio of 20. The relative viscosity of a mixed suspension may now be calculated for any combination of rods (of aspect ratio 20) and spheres.

Mor, R.; Gottlieb, M. [Ben-Gurion Univ. of the Negev, Beersheba (Israel). Dept. of Chemical Engineering; Graham, A.L. [Los Alamos National Lab., NM (United States); Mondy, L.A.

1996-05-01T23:59:59.000Z

344

Viscosity, entropy and the viscosity to entropy density ratio; how perfect is a nucleonic fluid?  

E-Print Network [OSTI]

The viscosity of hadronic matter is studied using a classical evaluation of the scattering angle and a quantum mechanical discussion based on phase shifts from a potential. Semi classical limits of the quantum theory are presented. A hard sphere and an attractive square well potential step are each considered as well as the combined effects of both. The lowest classical value of the viscosity for an attractive potential is shown to be a hard sphere limit. The high wave number-short wavelength limits of the quantum result have scaling laws associated with it for both the viscosity and entropy. These scaling laws are similar to the Fraunhoher diffraction increase for the hard sphere geometric cross section. Specific examples for nuclear collisions are given. The importance of the nuclear tensor force and hard core is mentioned. The viscosity (eta), entropy density (s) and eta/s ratio are calculated for a gas of dilute neutrons in the unitary limit of large scattering length. Away from the unitary limit, the ratio of the interaction radius or the scattering length to the interparticle spacing introduces a variable y besides the fugacity z. The isothermal compressibility is shown to impose important constraints. The results for eta/s are compared to the AdS/CFT string theory minimum of (1/4Pi)hbar/kb to see how close a nucleonic gas is to being a perfect fluid. The eta/s ~1hbar/kb for a neutron gas in its unitary limit. The eta/s 3hbar/kb treating the nuclear scattering as billiard ball collisions. The minimum eta/s for a neutron gas occurs in regions of negative isothermal compressibility and high fugacity where higher virial terms are important. In a neutron-proton system higher virial terms are associated with a liquid-gas phase transition and critical opalescent phenomena.The type of flow-laminar,vortex, turbulent- is investigated.

Aram Z. Mekjian

2010-09-29T23:59:59.000Z

345

Viscosity Solutions In this lecture we take a glimpse of the viscosity solution theory for linear and nonlinear PDEs. From our  

E-Print Network [OSTI]

Oct. 1 0 Viscosity Solutions In this lecture we take a glimpse of the viscosity solution theory "viscosity solutions", and a quite complete regularity theory which paral- lels those we have seen has been a few example of the equations that can be dealt with using the idea of viscosity solutions. Example 1

Yu, Xinwei

346

VISCOSITY OF AQUEOUS SODIUM CHLORIDE SOLUTIONS FROM 0 - 150oC  

E-Print Network [OSTI]

A. , Fabuss, B.M. , "Viscosities of Binary Aqueous Solutionsof Pressure on the Viscosity of Aqueous NaCl Solutions inF.A. , Kestin, J. , "The Viscosity of NaCl and KCl Solutions

Ozbek, H.

2010-01-01T23:59:59.000Z

347

Environmental assessment for the granting of US Navy easements near Pearl Harbor and Waikele Gulch Oahu, Hawaii to Hawaiian Electric Company, Inc. Final report  

SciTech Connect (OSTI)

This document was prepared pursuant to the National Environmental Policy Act (NEPA: and Navy regulations (OPNAVINST 5090.1B)). The document addresses environmental impacts from the proposed granting of three easements to the Hawaiian Electric Company, Inc. (HECO) for the use of Navy property near Waikele Gulch, Pearl City and the Waiau Power Plant. HECO`s proposed Waiau-CIP, Part 2, Project requires installation, operation, and maintenance of steel transmission line poles and associated equipment on three Navy parcels crossed by the 7.8 mile project. Health risks from exposure to the electric and magnetic fields of 138-kV transmission lines are discussed.

Luersen, P.; Wiley, M.; Hart, J.; Kanehiro, C.; Soloway, M.

1994-09-23T23:59:59.000Z

348

97 percent of special nuclear material de-inventoried from LLNL | National  

National Nuclear Security Administration (NNSA)

97 percent of special nuclear material de-inventoried from LLNL | National 97 percent of special nuclear material de-inventoried from LLNL | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > 97 percent of special nuclear material de-inventoried ... 97 percent of special nuclear material de-inventoried from LLNL Posted By Office of Public Affairs

349

SCHOOL PSYCHOLOGY SPECIALIZATION  

E-Print Network [OSTI]

HANDBOOK SCHOOL PSYCHOLOGY SPECIALIZATION (APA-Accredited and NASP-Approved) IN EDUCATIONAL PSYCHOLOGY DOCTORAL PROGRAM University of Wisconsin -Milwaukee For students, faculty, and supervisors 2013 to provide information specific to the School Psychology specialization. This specialization is fully

Saldin, Dilano

350

The viscosity of liquids (a) Normal octanol at atmospheric pressure (b) An equipment for high pressures.  

E-Print Network [OSTI]

??Theories of Liquid Viscosity lead to equations giving the variation of the viscosity with temperature and pressure, but give poor agreement with experimental values, particularly (more)

De Verteuil, Georges Francois

2012-01-01T23:59:59.000Z

351

International Energy Outlook 2006 - Special Topics  

Gasoline and Diesel Fuel Update (EIA)

Special Topics Special Topics International Energy Outlook 2006 World Oil Prices in IEO2006 World Oil Prices, 1980-2030: Comparison of IRAC and Average Price of Imported Low-Sulfur, Light Crude Oil (ILSLCO) to U.S. Refiners (2004 Dollars per Barrel). Need help, contact the National Energy Information Center at 202-586-8800. Figure Data In previous IEOs, the world crude oil price was defined on the basis of the average imported refiner acquisition cost of crude oil to the United States (IRAC), which represented the weighted average of all imported crude oil. Historically, the IRAC price has tended to be a few dollars less than the widely cited prices of premium crudes, such as West Texas Intermediate (WTI) and Brent, which refiners generally prefer for their low viscosity

352

Static and Dynamic Viscosity of a Single Layer Dusty Plasma  

SciTech Connect (OSTI)

We measured the static and dynamic (complex) shear viscosity of a single layer complex plasma by applying, respectively, a stationary and a periodically modulated shear stress induced by the light pressure of manipulating laser beams. Under static conditions the shear viscosity reproduced the numerically predicted shear rate dependence, the so called shear-thinning effect. Under oscillating shear both the magnitude and the ratio of the dissipative and elastic contributions to the complex viscosity show strong frequency dependence. Accompanying molecular dynamics simulations explain and support the experimental observations.

Hartmann, Peter [Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O.B. 49, H-1525 Budapest (Hungary); Center for Astrophysics, Space Physics and Engineering Research (CASPER), One Bear Place 97310, Baylor University, Waco, TX 76798 (United States); Sandor, Mate Cs.; Kovacs, Aniko; Donko, Zoltan [Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O.B. 49, H-1525 Budapest (Hungary)

2011-11-29T23:59:59.000Z

353

Bulk viscosity, chemical equilibration and flow at RHIC  

E-Print Network [OSTI]

We study the effects of bulk viscosity on p_T spectra and elliptic flow in heavy ion collisions at RHIC. We argue that direct effect of the bulk viscosity on the evolution of the velocity field is small, but corrections to the freezeout distributions can be significant. These effects are dominated by chemical non-equilibration in the hadronic phase. We show that a non-zero bulk viscosity in the range $\\zeta/s \\lsim 0.05$ improves the description of spectra and flow at RHIC.

Thomas Schaefer; Kevin Dusling

2012-10-15T23:59:59.000Z

354

Departments of Energy, Navy, and Agriculture Invest $210 million in Three Commercial Biorefineries to Produce Drop-in Biofuel for the Military  

Office of Energy Efficiency and Renewable Energy (EERE)

In 2014, the U.S. Departments of Energy, Navy, and Agriculture announced that Emerald Biofuels, Fulcrum Energy, and Red Rock Biofuels have been awarded contracts to construct biorefineries capable...

355

Fitting and re-fitting : adaptive re-use proposal for building 114 in the Charlestown Navy Yard as a bio-tech research facility  

E-Print Network [OSTI]

n the 1988 Master Plan of the Charlestown Navy Yard, Building 114 was originally planned as a boat repair and maintenance facility with offices. It appeared to be a logical proposal which would revive it to its previous ...

Shay, Stephen D. (Stephen Dar), 1969-

1999-01-01T23:59:59.000Z

356

EIS-0259: Disposal of Decommissioned, Defueled Cruiser, Ohio Class and Los Angeles Class Naval Reactor Plants, Hanford Site, Richland (adopted from Navy)  

Broader source: Energy.gov [DOE]

This EIS analyzes the alternate ways for disposing of decommissioned, defieled reactor compliments from U.S. Navy nuclear-powered cruisers, (Bainbridge, Truxtun, Long Beach, California Class and Virginia Class) and Los Angeles Class, and Ohio Class submarines.

357

Viscosity of a one-component polarizable fluid  

Science Journals Connector (OSTI)

The viscosity of a one-component polarizable fluid in an electric field is studied by computer simulations. The fluid viscosity increases with the field through three stages. In a weak field, the fluid remains Newtonian, although its viscosity increases. At this stage, while drifting in the flow direction, particles diffuse in the direction perpendicular to the flow. In an intermediate electric field, the fluid has tilted and broken chains moving with the flow and the fluid becomes non-Newtonian. The viscosity ? and the shear rate ?? have the relationship ?=?0e-???, where ? is the relaxation time and ?0 is exponentially proportional to the dipolar interaction energy and the volume fraction. In a strong electric field, the fluid contains condensed chains that provide yield stress and hysteresis.

J. M. Sun and R. Tao

1995-07-01T23:59:59.000Z

358

Textured-surface quartz resonator fluid density and viscosity monitor  

DOE Patents [OSTI]

A pair of thickness-shear mode resonators, one smooth and one with a textured surface, allows fluid density and viscosity to be independently resolved. A textured surface, either randomly rough or regularly patterned, leads to trapping of liquid at the device surface. The synchronous motion of this trapped liquid with the oscillating device surface allows the device to weigh the liquid; this leads to an additional response that depends on liquid density. This additional response enables a pair of devices, one smooth and one textured, to independently resolve liquid density and viscosity; the difference in responses determines the density while the smooth device determines the density-viscosity product, and thus, the pair determines both density and viscosity.

Martin, Stephen J. (Albuquerque, NM); Wiczer, James J. (Albuquerque, NM); Cernosek, Richard W. (Albuquerque, NM); Frye, Gregory C. (Cedar Crest, NM); Gebert, Charles T. (Albuquerque, NM); Casaus, Leonard (Bernalillo, NM); Mitchell, Mary A. (Tijeras, NM)

1998-08-25T23:59:59.000Z

359

Bulk viscosity in nuclear and quark matter: A short review  

E-Print Network [OSTI]

The history and recent progresses in the study of bulk viscosity in nuclear and quark matter are reviewed. The constraints from baryon number conservation and electric neutrality in quark matter on particle densities and fluid velocity divergences are discussed.

Hui Dong; Nan Su; Qun Wang

2007-02-07T23:59:59.000Z

360

Hall viscosity and angular momentum in gapless holographic models  

E-Print Network [OSTI]

We use the holographic approach to compare the Hall viscosity ?[subscript H] and the angular momentum density J in gapless systems in 2 + 1 dimensions at finite temperature. We start with a conformal fixed point and turn ...

Liu, Hong

Note: This page contains sample records for the topic "viscosity navy special" 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

Gas Viscosity at High Pressure and High Temperature  

E-Print Network [OSTI]

. Although viscosity of some pure components such as methane, ethane, propane, butane, nitrogen, carbon dioxide and binary mixtures of these components at low-intermediate pressure and temperature had been studied intensively and been understood thoroughly...

Ling, Kegang

2012-02-14T23:59:59.000Z

362

EFFECT OF GLASS COMPOSITION ON ACTIVATION ENERGY OF VISCOSITY...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EFFECT OF GLASS COMPOSITION ON ACTIVATION ENERGY OF VISCOSITY IN GLASS-MELTING-TEMPERATURE RANGE Sang-Soo Han (1) , Pavel Hrma (1,2) (1) Division of Advanced Nuclear Engineering,...

363

Bulk viscosity and the conformal anomaly in the pion gas  

E-Print Network [OSTI]

We calculate the bulk viscosity of the massive pion gas within Unitarized Chiral Perturbation Theory. We obtain a low temperature peak arising from explicit conformal breaking due to the pion mass and another peak near the critical temperature, dominated by the conformal anomaly through gluon condensate terms. The correlation between bulk viscosity and conformal breaking supports a recent QCD proposal. We discuss the role of resonances, heavier states and large-$N_c$ counting.

D. Fernandez-Fraile; A. Gomez Nicola

2008-09-26T23:59:59.000Z

364

Viscosity and boost invariance at RHIC and LHC  

E-Print Network [OSTI]

We consider the longitudinal hydrodynamic evolution of the fireball created in a relativistic heavy-ion collision. Nonzero shear viscosity reduces the colling rate of the system and hinders the acceleration of the longitudinal flow. As a consequence, the initial energy density needed to reproduce the experimental data at RHIC energies is significantly reduced. At LHC energies, we expect that shear viscosity helps to conserve a Bjorken plateau in the rapidity distributions during the expansion.

Piotr Bozek

2008-03-31T23:59:59.000Z

365

Oxygen consumption by asphalt films and resulting viscosity changes  

E-Print Network [OSTI]

OXYGEN CONSUMPTION BY ASPHALT FILNS AND RESULTING VISCOSITY CHANGES A Thesis by FRANK LEE CARTER, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... Nay 1965 Major Subject: Chemistry OXYGEN CONSUMPTION BY ASPHALT FILMS AND RESULTING VISCOSITY CHANGES A Thesis by FRANK LEE CARTER, JR. Approved as to style and content by: (Chairm of Committee) (H o Depa ( mb ) (Membe May 1965...

Carter, Frank Lee

2012-06-07T23:59:59.000Z

366

Coefficients of the second viscosity in bulk liquid helium  

Science Journals Connector (OSTI)

The coefficients of the second viscosity in bulk liquid helium are evaluated explicitly as a function of temperature via interactions between the anomalous excitation spectrums. The four coefficients of the second viscosity exhibit a T-1 dependence at low temperatures (well below 0.6 K), which is due to three-phonon processes originating from the anomalous dispersion at very low momenta and temperatures.

Chung-In Um; Chul-Won Jun; Thomas F. George

1992-09-01T23:59:59.000Z

367

Demonstration of base catalyzed decomposition process, Navy Public Works Center, Guam, Mariana Islands  

SciTech Connect (OSTI)

Base Catalyzed Decomposition (BCD) is a chemical dehalogenation process designed for treating soils and other substrate contaminated with polychlorinated biphenyls (PCB), pesticides, dioxins, furans, and other hazardous organic substances. PCBs are heavy organic liquids once widely used in industry as lubricants, heat transfer oils, and transformer dielectric fluids. In 1976, production was banned when PCBs were recognized as carcinogenic substances. It was estimated that significant quantities (one billion tons) of U.S. soils, including areas on U.S. military bases outside the country, were contaminated by PCB leaks and spills, and cleanup activities began. The BCD technology was developed in response to these activities. This report details the evolution of the process, from inception to deployment in Guam, and describes the process and system components provided to the Navy to meet the remediation requirements. The report is divided into several sections to cover the range of development and demonstration activities. Section 2.0 gives an overview of the project history. Section 3.0 describes the process chemistry and remediation steps involved. Section 4.0 provides a detailed description of each component and specific development activities. Section 5.0 details the testing and deployment operations and provides the results of the individual demonstration campaigns. Section 6.0 gives an economic assessment of the process. Section 7.0 presents the conclusions and recommendations form this project. The appendices contain equipment and instrument lists, equipment drawings, and detailed run and analytical data.

Schmidt, A.J.; Freeman, H.D.; Brown, M.D.; Zacher, A.H.; Neuenschwander, G.N.; Wilcox, W.A.; Gano, S.R. [Pacific Northwest National Lab., Richland, WA (United States)] [Pacific Northwest National Lab., Richland, WA (United States); Kim, B.C.; Gavaskar, A.R. [Battelle Columbus Div., OH (United States)] [Battelle Columbus Div., OH (United States)

1996-02-01T23:59:59.000Z

368

Viscosity of alumina nanoparticles dispersed in car engine coolant  

SciTech Connect (OSTI)

The present paper, describes our experimental results on the viscosity of the nanofluid prepared by dispersing alumina nanoparticles (<50 nm) in commercial car coolant. The nanofluid prepared with calculated amount of oleic acid (surfactant) was tested to be stable for more than 80 days. The viscosity of the nanofluids is measured both as a function of alumina volume fraction and temperature between 10 and 50 C. While the pure base fluid display Newtonian behavior over the measured temperature, it transforms to a non-Newtonian fluid with addition of a small amount of alumina nanoparticles. Our results show that viscosity of the nanofluid increases with increasing nanoparticle concentration and decreases with increase in temperature. Most of the frequently used classical models severely under predict the measured viscosity. Volume fraction dependence of the nanofluid viscosity, however, is predicted fairly well on the basis of a recently reported theoretical model for nanofluids that takes into account the effect of Brownian motion of nanoparticles in the nanofluid. The temperature dependence of the viscosity of engine coolant based alumina nanofluids obeys the empirical correlation of the type: log ({mu}{sub nf}) = A exp(BT), proposed earlier by Namburu et al. (author)

Kole, Madhusree; Dey, T.K. [Thermophysical Measurements Laboratory, Cryogenic Engineering Centre, Indian Institute of Technology, Kharagpur 721 302 (India)

2010-09-15T23:59:59.000Z

369

Viscosity of liquid He-4 and quantum of circulation: Why and how are they related?  

E-Print Network [OSTI]

The relationship between the apparently unrelated physical quantities -- kinematic viscosity of liquid He-4, $\

V. S. L'vov; L. Skrbek

2011-02-16T23:59:59.000Z

370

Viscosity of semi-dilute polymer solutions M. Adam and M. Delsanti  

E-Print Network [OSTI]

549 Viscosity of semi-dilute polymer solutions M. Adam and M. Delsanti Laboratoire Léon viscosity measurements on semi-dilute solutions (c* c 10 %). The viscosity variation is independent to the solvent viscosity. With concentration, the following variations were observed : 2014 for PIB-toluene, ~r

Paris-Sud XI, Université de

371

Flow meter evaluation for U.S. Navy Public Works Center, San Diego, California  

SciTech Connect (OSTI)

The U.S. Navy Public Works Center San Diego (PWCSD) was concerned about the accuracy of various flow meters on steam and compressed air lines serving Naval facilities in San Diego, California. The flow meters had experienced various inconsistencies that had not been resolved prior to July 1993. Pacific Northwest Laboratory, Richland, Washington, evaluated the operation of 10 out of 79 steam and compressed air flow meters at PWCSD. The evaluation was limited to analysis of historical information and review of existing operating procedures. On-site investigation of the flow meters was limited to external observations of the flow-sensing equipment and a check of the flow computer program. PNL did not remove installed sensing equipment (i.e., flow meters or temperature or pressure sensors) to evaluate existing condition or check calibration. Although many of the flow meter errors can be traced to improperly normalized readings and to meters improperly compensated for temperature and pressure, lack of regular maintenance, including proper calibration, was evidenced throughout this study. A strict calibration schedule should be established for all steam and air flow meters, including calibration of the temperature sensor, pressure sensor, and flow turbine. It is recommended that the most crucial flow meters (such as the 10 evaluated in this study) be calibrated yearly. The remaining 69 flow meters could be placed on a staggered, biyearly calibration schedule. Calibration should be done by qualified personnel only. Improper calibration is often worse than no calibration at all. An outside firm is recommended to be contracted with to perform all maintenance and calibration on flow meters at the Naval facilities. Use of an outside firm would better facilitate regular, reliable calibration while removing liability for damaged parts.

Chvala, W.D. Jr.; McMordie, K.L.; Szydlowski, R.F.

1995-06-01T23:59:59.000Z

372

Advanced cogeneration and absorption chillers potential for service to Navy bases. Final report  

SciTech Connect (OSTI)

The US military uses millions of Btu`s of thermal energy to heat, cool and deliver process thermal energy to buildings on military bases, much of which is transmitted through a pipeline system incorporating thousands of miles of pipe. Much of this pipeline system is in disrepair and is nearing the end of its useful life, and the boilers which supply it are old and often inefficient. In 1993, Brookhaven National Laboratory (BNL) proposed to SERDP a three-year effort to develop advanced systems of coupled diesel cogenerators and absorption chillers which would be particularly useful in providing a continuation of the services now provided by increasingly antiquated district systems. In mid-February, 1995, BNL learned that all subsequent funding for our program had been canceled. BNL staff continued to develop the Program Plan and to adhere to the requirements of the Execution Plan, but began to look for ways in which the work could be made relevant to Navy and DoD energy needs even without the extensive development plan formerly envisioned. The entire program was therefore re-oriented to look for ways in which small scale cogeneration and absorption chilling technologies, available through procurement rather than development, could provide some solutions to the problem of deteriorated district heating systems. The result is, we believe, a striking new approach to the provision of building services on military bases: in many cases, serious study should be made of the possibility that the old district heating system should be removed or abandoned, and small-scale cogenerators and absorption chillers should be installed in each building. In the remainder of this Summary, we develop the rationale behind this concept and summarize our findings concerning the conditions under which this course of action would be advisable and the economic benefits which will accrue if it is followed. The details are developed in the succeeding sections of the report.

Andrews, J.W.; Butcher, T.A.; Leigh, R.W.; McDonald, R.J.; Pierce, B.L.

1996-04-01T23:59:59.000Z

373

Special Nevada report  

SciTech Connect (OSTI)

This report is submitted to Congress by the Secretary of the Air Force, the Secretary of the Navy, and the Secretary of the Interior pursuant to Section 6 of the Military Lands Withdrawal Act of 1986. It contains an analysis and evaluation of the effects on public health and safety resulting from DOD and Department of Energy (DOE) military and defense-related uses on withdrawn public lands in the State of Nevada and in airspace overlying the State. This report describes the cumulative impacts of those activities on public and private property in Nevada and on plants, fish and wildlife, cultural, historic, scientific, recreational, wilderness and other resources of the public lands of Nevada. An analysis and evaluation of possible measures to mitigate the cumulative effects of the withdrawal of lands and the use of airspace in Nevada for defense-related purposes was conducted, and those considered practical are listed.

NONE

1991-09-23T23:59:59.000Z

374

Viscosity and scale invariance in the unitary Fermi gas  

E-Print Network [OSTI]

We compute the shear viscosity of the unitary Fermi gas above the superfluid transition temperature, using a diagrammatic technique that starts from the exact Kubo formula. The formalism obeys a Ward identity associated with scale invariance which guarantees that the bulk viscosity vanishes identically. For the shear viscosity, vertex corrections and the associated Aslamazov-Larkin contributions are shown to be crucial to reproduce the full Boltzmann equation result in the high-temperature, low fugacity limit. The frequency dependent shear viscosity $\\eta(\\omega)$ exhibits a Drude-like transport peak and a power-law tail at large frequencies which is proportional to the Tan contact. The weight in the transport peak is given by the equilibrium pressure, in agreement with a sum rule due to Taylor and Randeria. Near the superfluid transition the peak width is of the order of $0.5 T_F$, thus invalidating a quasiparticle description. The ratio $\\eta/s$ between the static shear viscosity and the entropy density exhibits a minimum near the superfluid transition temperature whose value is larger than the string theory bound $\\hbar/(4\\pi k_B)$ by a factor of about seven.

Tilman Enss; Rudolf Haussmann; Wilhelm Zwerger

2010-07-30T23:59:59.000Z

375

Dark goo: bulk viscosity as an alternative to dark energy  

SciTech Connect (OSTI)

We present a simple (microscopic) model in which bulk viscosity plays a role in explaining the present acceleration of the universe. The effect of bulk viscosity on the Friedmann equations is to turn the pressure into an 'effective' pressure containing the bulk viscosity. For a sufficiently large bulk viscosity, the effective pressure becomes negative and could mimic a dark energy equation of state. Our microscopic model includes self-interacting spin-zero particles (for which the bulk viscosity is known) that are added to the usual energy content of the universe. We study both background equations and linear perturbations in this model. We show that a dark energy behavior is obtained for reasonable values of the two parameters of the model (i.e. the mass and coupling of the spin-zero particles) and that linear perturbations are well-behaved. There is no apparent fine tuning involved. We also discuss the conditions under which hydrodynamics holds, in particular that the spin-zero particles must be in local equilibrium today for viscous effects to be important.

Gagnon, Jean-Sebastien [Technische Universitt Darmstadt, Schlossgartenstrasse 2, 64289, Darmstadt (Germany); Lesgourgues, Julien, E-mail: jean-sebastien.gagnon@physik.tu-darmstadt.de, E-mail: julien.lesgourgues@cern.ch [cole Polytechnique Fdrale de Lausanne, CH-1015, Lausanne (Switzerland)

2011-09-01T23:59:59.000Z

376

Viscosity and scale invariance in the unitary Fermi gas  

SciTech Connect (OSTI)

We compute the shear viscosity of the unitary Fermi gas above the superfluid transition temperature, using a diagrammatic technique that starts from the exact Kubo formula. The formalism obeys a Ward identity associated with scale invariance which guarantees that the bulk viscosity vanishes identically. For the shear viscosity, vertex corrections and the associated Aslamazov-Larkin contributions are shown to be crucial to reproduce the full Boltzmann equation result in the high-temperature, low fugacity limit. The frequency dependent shear viscosity {eta}({omega}) exhibits a Drude-like transport peak and a power-law tail at large frequencies which is proportional to the Tan contact. The weight in the transport peak is given by the equilibrium pressure, in agreement with a sum rule due to Taylor and Randeria. Near the superfluid transition the peak width is of the order of 0.5T{sub F}, thus invalidating a quasiparticle description. The ratio {eta}/s between the static shear viscosity and the entropy density exhibits a minimum near the superfluid transition temperature whose value is larger than the string theory bound h/(4{pi}k{sub B}) by a factor of about seven.

Enss, Tilman, E-mail: Tilman.Enss@ph.tum.de [Technische Universitaet Muenchen, James-Franck-Strasse, D-85747 Garching (Germany); Haussmann, Rudolf [Fachbereich Physik, Universitaet Konstanz, D-78457 Konstanz (Germany); Zwerger, Wilhelm [Technische Universitaet Muenchen, James-Franck-Strasse, D-85747 Garching (Germany)

2011-03-15T23:59:59.000Z

377

Singularity and entropy of the viscosity dark energy model  

E-Print Network [OSTI]

In this paper bulk viscosity is introduced to describe the effects of cosmic non-perfect fluid on the cosmos evolution and to build the unified dark energy (DE) with (dark) matter models. Also we derive a general relation between the bulk viscosity form and Hubble parameter that can provide a procedure for the viscosity DE model building. Especially, a redshift dependent viscosity parameter $\\zeta\\propto\\lambda_{0}+\\lambda_{1}(1+z)^{n}$ proposed in the previous work by X.H.Meng and X.Dou in 2009\\cite{md} is investigated extensively in this present work. Further more we use the recently released supernova dataset (the Constitution dataset) to constrain the model parameters. In order to differentiate the proposed concrete dark energy models from the well known $\\Lambda$CDM model, statefinder diagnostic method is applied to this bulk viscosity model, as a complementary to the $Om$ parameter diagnostic and the deceleration parameter analysis performed by us before. The DE model evolution behavior and tendency are...

Meng, X H

2009-01-01T23:59:59.000Z

378

Wisconsin Agriculture SPECIAL ARTICLE  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . 31 · Corn Ethanol: Impacts on Markets Communities and the Environment . . . . . . 33 · BioenergySTATUS OF Wisconsin Agriculture 2009 · SPECIAL ARTICLE: Bioenergy and Agriculture in Wisconsin . . . . . . . . . . . . . . . . . 29 III Special Article: Bioenergy and Agriculture in Wisconsin

Radeloff, Volker C.

379

A Brief Review of Viscosity Models for Slag in Coal Gasification  

SciTech Connect (OSTI)

Many researchers have defined the phenomenon of 'slagging' as the deposition of ash in the radiative section of a boiler, while 'fouling' refers to the deposition of ash in the convective-pass region. Among the important parameters affecting ash deposition that need to be studied are ash chemistry, its transport, deposit growth, and strength development; removability of the ash deposit; heat transfer mechanisms; and the mode of operation for boilers. The heat transfer at the walls of a combustor depends on many parameters including ash deposition. This depends on the processes or parameters controlling the impact efficiency and the sticking efficiency. For a slagging combustor or furnace, however, the temperatures are so high that much of the coal particles are melted and the molten layer, in turn, captures more particles as it flows. The main problems with ash deposition are reduced heat transfer in the boiler and corrosion of the tubes. Common ways of dealing with these issues are soot blowing and wall blowing on a routine basis; however, unexpected or uncontrolled depositions can also complicate the situation, and there are always locations inaccessible to the use of such techniques. Studies have indicated that slag viscosity must be within a certain range of temperatures for tapping and the membrane wall to be accessible, for example, between 1300 C and 1500 C, the viscosity is approximately 25 Pa {center_dot} s. As the operating temperature decreases, the slag cools and solid crystals begin to form. In such cases the slag should be regarded as a non-Newtonian suspension, consisting of liquid silicate and crystals. A better understanding of the rheological properties of the slag, such as yield stress and shear-thinning, are critical in determining the optimum operating conditions. To develop an accurate heat transfer model in any type of coal combustion or gasification process, the heat transfer and to some extent the rheological properties of ash and slag, especially in high-temperature environments need to be understood and properly modeled. The viscosity of slag and the thermal conductivity of ash deposits are among two of the most important constitutive parameters that need to be studied. The accurate formulation or representations of the (transport) properties of coal (and biomass for co-firing cases) present a special challenge of modeling efforts in computational fluid dynamics applications. In this report, we first provide a brief review of the various approaches taken by different researchers in formulating or obtaining a slag viscosity model. In general, these models are based on experiments. Since slag behaves as a non-linear fluid, we discuss the constitutive modeling of slag and the important parameters that must be studied.

Massoudi, Mehrdad; Wang, Ping

2011-11-01T23:59:59.000Z

380

Viscosity bound for anisotropic superfluids in higher derivative gravity  

E-Print Network [OSTI]

In the present paper, based on the principles of gauge/gravity duality we analytically compute the shear viscosity to entropy ratio corresponding to the superfluid phase in Einstein Gauss-Bonnet gravity. From our analysis we note that the ratio indeed receives a finite temperature correction below certain critical temperature. This proves the non universality of shear viscosity to entropy ratio in higher derivative theories of gravity. We also compute the upper bound for the Gauss-Bonnet coupling corresponding to the symmetry broken phase and note that the upper bound on the coupling does not seem to change as long as we are close to the critical point of the phase diagram. However the corresponding lower bound of the shear viscosity to entropy ratio seems to get modified due to the finite temperature effects.

Bhattacharyya, Arpan

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Viscosity in cosmological simulations of clusters of galaxies  

E-Print Network [OSTI]

The physics of the intracluster medium, in particular the values for the thermal conductivity and the viscosity are largely unknown and subject to an ongoing debate. Here, we study the effect of viscosity on the thermal state of the intracluster medium using three-dimensional cosmological simulations of structure formation. It is shown that viscosity, provided it is not too far off from the unmagnetised Spitzer value, has a significant effect on cluster profiles. In particular, it aids in heating the cool cores of clusters. The central cooling time of the most massive clusters in our simulation is increased by more than an order of magnitude. In large clusters, viscous heating may help to establish an entropy floor and to prevent a cooling catastrophe.

M. Brggen; M. Ruszkowski

2005-12-06T23:59:59.000Z

382

Viscosity bound for anisotropic superfluids in higher derivative gravity  

E-Print Network [OSTI]

In the present paper, based on the principles of gauge/gravity duality we analytically compute the shear viscosity to entropy ratio corresponding to the superfluid phase in Einstein Gauss-Bonnet gravity. From our analysis we note that the ratio indeed receives a finite temperature correction below certain critical temperature. This proves the non universality of shear viscosity to entropy ratio in higher derivative theories of gravity. We also compute the upper bound for the Gauss-Bonnet coupling corresponding to the symmetry broken phase and note that the upper bound on the coupling does not seem to change as long as we are close to the critical point of the phase diagram. However the corresponding lower bound of the shear viscosity to entropy ratio seems to get modified due to the finite temperature effects.

Arpan Bhattacharyya; Dibakar Roychowdhury

2014-10-13T23:59:59.000Z

383

Shear Viscosity in the Post-quasistatic Approximation  

E-Print Network [OSTI]

We apply the post-quasi--static approximation, an iterative method for the evolution of self-gravitating spheres of matter, to study the evolution of anisotropic non-adiabatic radiating and dissipative distributions in General Relativity. Dissipation is described by viscosity and free-streaming radiation, assuming an equation of state to model anisotropy induced by the shear viscosity. We match the interior solution, in non-comoving coordinates, with the Vaidya exterior solution. Two simple models are presented, based on the Schwarzschild and Tolman VI solutions, in the non--adiabatic and adiabatic limit. In both cases the eventual collapse or expansion of the distribution is mainly controlled by the anisotropy induced by the viscosity.

C. Peralta; L. Rosales; B. Rodr guez-Mueller; W. Barreto

2010-03-09T23:59:59.000Z

384

Dissipative kinetic Alfvn solitary waves resulting from viscosity  

SciTech Connect (OSTI)

Nonlinear small-amplitude kinetic Alfvn solitary waves (KASWs) are investigated with their anomalous kinetic viscosity effect on electrons. It is found that the structure of a hump-type KASW solution develops into a shock-type (or double layer) KASW solution for large amplitude KASWs when viscosity exists. For small amplitude KASWs, the Korteweg-de Vries (KdV) equation with an approximate pseudopotential was solved, and it is found that the hump-type KASWs develop into oscillating shock-type (kink-type) KASWs. It is also found that the oscillating scale of this structure is related to the propagation velocity and plasma beta, while the damping scale is inversely proportional to the viscosity.

Choi, C.-R.; Kang, S.-B.; Min, K.-W. [Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)] [Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Woo, M.-H. [National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)] [National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of); Hwang, J.; Park, Y.-D. [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of)] [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of)

2013-11-15T23:59:59.000Z

385

Bulk Viscosity, Decaying Dark Matter, and the Cosmic Acceleration  

E-Print Network [OSTI]

We discuss a cosmology in which cold dark-matter particles decay into relativistic particles. We argue that such decays could lead naturally to a bulk viscosity in the cosmic fluid. For decay lifetimes comparable to the present hubble age, this bulk viscosity enters the cosmic energy equation as an effective negative pressure. We investigate whether this negative pressure is of sufficient magnitude to account fo the observed cosmic acceleration. We show that a single decaying species in a flat, dark-matter dominated cosmology without a cosmological constant cannot reproduce the observed magnitude-redshift relation from Type Ia supernovae. However, a delayed bulk viscosity, possibly due to a cascade of decaying particles may be able to account for a significant fraction of the apparent cosmic acceleration. Possible candidate nonrelativistic particles for this scenario include sterile neutrinos or gauge-mediated decaying supersymmetric particles.

James R. Wilson; Grant J. Mathews; George M. Fuller

2006-09-25T23:59:59.000Z

386

A generalized viscosity equation for pure heavy hydrocarbons  

SciTech Connect (OSTI)

This paper presents a method for the correlation and prediction of the viscosity of pure heavy hydrocarbons listed in API Research Project 42. The 273 heavy hydrocarbons in the database include branched/unbranched paraffins and olefins together with a variety of complex nonfused/fused aromatic and naphthenic compounds. A generalized one-parameter viscosity-temperature equation, log ({mu} + 0.8) = 100(0.01T){sup b}, is proposed (overall AAD {lt} 7-10%) for all heavy hydrocarbons in the database. For each hydrocarbon, an optimum value of parameter b is provided. It is shown that parameter b varies linearly with the logarithm of molar mass as well as the inverse of boiling temperature (at 10 mmHg). This important observation leads to the development of a predictive method for the liquid-phase viscosity of pure heavy hydrocarbons.

Mehrotra, A.K. (Dept. of Chemical and Petroleum Engineering, Univ. of Calgary, Calgary, Alberta T2N 1N4 (CA))

1991-02-01T23:59:59.000Z

387

Polyacrylamide polymer viscosity as a function of brine composition  

SciTech Connect (OSTI)

A computer model has been developed which predicts the viscosity of polymer and oil field brine mixtures. The polymers used were Amoco- Sweepaid 103 and Dow- Pusher 500 polyacrylamide polymers. All of the experiments were conducted at 1200 ppM polymer concentration. The computer input consists of the ionic strength of the brine in the mixture and the fraction of that ionic strength due to sodium ions. The computer program makes predictions of viscosity by referencing a family of viscosity curves for various mixtures of sodium chloride and calcium chloride in 1200 ppM polymer solutions. The model has been tested using 59 mixtures of brines and polymers. The ionic strength of the brine in the mixtures varied from 0.0018 to 0.025. The fraction of the brines' total ionic strength due to sodium ions varied from 0.22 to 0.49. The brines consisted predominantly of sodium, potassium, magnesium, calcium, chloride, bicarbonate and sulfate ions.

French, T.R.; Stacy, N.; Collins, A.G.

1981-05-01T23:59:59.000Z

388

Nonlinear viscosity and its role in drift-Alfven modes  

SciTech Connect (OSTI)

The moment approach is used to analyze the part of the magnetized plasma viscosity related to the nonlinear character of the Landau collision integral in the Boltzmann kinetic equation (nonlinear viscosity), pointed out by Catto and Simakov [Phys. Plasmas 11, 90 (2004)]. It is shown that the results of these authors, who have used an alternative procedure based on a more detailed analysis of the kinetic equation, correspond to a 15-moment approach. In comparison with the 13-moment approach (density, temperature, velocity, heat flux, and the viscosity tensor) of Grad, the 15-moment approach takes into account two higher-order moments, one of which is the vector-type moment similar to the parallel heat flux and the second is the tensor-type moment similar to the parallel projection of the viscosity tensor. Both these higher-order moments enter into the Braginskii approximation. The nonlinear viscosity calculated in the scope of the 13-moment Grad approach is qualitatively the same as that found by Catto and Simakov. Its role is investigated for drift-Alfven modes, driven by the combined effect of the dissipative part of perpendicular heat conductivity and the standard collisional viscosity, and it is shown to be essential for the radial transport of these modes. It is shown that the wave packet of drift-Alfven modes, propagating in the diamagnetic drift direction and driven for reversed temperature gradient, is transported down the pressure gradient. In contrast to this, the wave packet propagating in the electron diamagnetic drift direction and driven for positive temperature gradient is transported up the pressure gradient.

Tsypin, V.S.; Mikhailovskii, A.B.; Shirokov, M.S.; Kovalishen, E.A.; Konovalov, S.V.; Galvao, R.M.O. [Physics Institute, University of Sao Paulo, Cidade Universitaria, 05508-900, Sao Paulo (Brazil); Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, Kurchatov Sq., 1, Moscow 123182 (Russian Federation) and Nonlinear Physics Laboratory, Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi 141700, Moscow Region (Russian Federation); Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, Kurchatov Sq., 1, Moscow 123182 (Russian Federation) and Moscow Engineering Physics Institute, Kashirskoe Shosse 31, Moscow 115409 (Russian Federation); Nonlinear Physics Laboratory, Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi 141700 (Russian Federation) and Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, Kurchatov Sq., 1, Moscow 123182 (Russian Federation); Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, Kurchatov Sq., 1, Moscow 123182 (Russian Federation); Physics Institute, University of Sao Paulo, Cidade Universitaria, 05508-900, Sao Paulo (Brazil) and Brazilian Center for Research in Physics, Rua Xavier Sigaud, 150, 22290-180, Rio de Janeiro (Brazil)

2005-12-15T23:59:59.000Z

389

SimPersonnel: a prototype policy simulation model for enterprise-wide manpower management in the US Navy  

Science Journals Connector (OSTI)

Manpower management is a complex and daunting enterprise-wide endeavour in all large organisations, but nowhere is this truer than in the military in which manpower decisions have a direct impact on national security. Many of the same challenges facing business organisations plague the US Navy. Units operate in a ''stove-piped'' fashion in which data, information, and knowledge are not distributed and shared across the enterprise. An initiative is underway to create a ''networked Navy'', one in which information systems are integrated, communication technologies are exploited to distribute critical information for better enterprise management and decision making, and creative technology-based approaches to problems are encouraged. In this paper, we present a novel application of discrete-event simulation for enterprise-wide manpower management. We describe the modelling process, features, and benefits of our prototype manpower management system, SimPersonnel. The model and prototype system address the new directions personnel management is likely to take in the 21st century: seamless access to information and knowledge; a fully integrated manpower, personnel, and training (MPT) information system; the ability to simulate plans and policies across the entire MPT spectrum. SimPersonnel, developed to demonstrate proof of concept and to assess the feasibility of a full-scale model of the entire US Navy enlisted manpower management system, represents a unique and promising technology-based approach to enterprise-wide manpower management. The process of system development and the benefits of the system are applicable to enterprise-wide manpower management challenges in domains other than the military, such as manufacturing and production organisations.

Rosemary Wild; Donald E. Vance II; Kenneth A. Griggs

2003-01-01T23:59:59.000Z

390

Bulk Viscosity of a Gas of Massless Pions  

E-Print Network [OSTI]

In the hadronic phase, the dominant configuration of QCD with two flavors of massless quarks is a gas of massless pions. We calculate the bulk viscosity (zeta) using the Boltzmann equation with the kinetic theory generalized to incorporate the trace anomaly. We find that the dimensionless ratio zeta/s, s being the entropy density, is monotonic increasing below T=120 MeV, where chiral perturbation theory is applicable. This, combined with previous results, shows that zeta/s reaches its maximum near the phase transition temperature Tc, while eta/s, eta being the shear viscosity, reaches its minimum near Tc in QCD with massless quarks.

Jiunn-Wei Chen; Juven Wang

2007-11-30T23:59:59.000Z

391

Method for measuring liquid viscosity and ultrasonic viscometer  

DOE Patents [OSTI]

An ultrasonic viscometer and method for measuring fluid viscosity are provided. Ultrasonic shear and longitudinal waves are generated and coupled to the fluid. Reflections from the generated ultrasonic shear and longitudinal waves are detected. Phase velocity of the fluid is determined responsive to the detected ultrasonic longitudinal waves reflections. Viscosity of the fluid is determined responsive to the detected ultrasonic shear waves reflections. Unique features of the ultrasonic viscometer include the use of a two-interface fluid and air transducer wedge to measure relative signal change and to enable self calibration and the use of a ratio of reflection coefficients for two different frequencies to compensate for environmental changes, such as temperature.

Sheen, Shuh-Haw (Naperville, IL); Lawrence, William P. (Downers Grove, IL); Chien, Hual-Te (Naperville, IL); Raptis, Apostolos C. (Downers Grove, IL)

1994-01-01T23:59:59.000Z

392

Bulk viscosity of strongly coupled plasmas with holographic duals  

E-Print Network [OSTI]

We explain a method for computing the bulk viscosity of strongly coupled thermal plasmas dual to supergravity backgrounds supported by one scalar field. Whereas earlier investigations required the computation of the leading dissipative term in the dispersion relation for sound waves, our method requires only the leading frequency dependence of an appropriate Green's function in the low-frequency limit. With a scalar potential chosen to mimic the equation of state of QCD, we observe a slight violation of the lower bound on the ratio of the bulk and shear viscosities conjectured in arXiv:0708.3459.

Steven S. Gubser; Silviu S. Pufu; Fabio D. Rocha

2008-06-02T23:59:59.000Z

393

Bulk viscosity of the gluon plasma in a holographic approach  

E-Print Network [OSTI]

A gravity-scalar model in 5-dim. Riemann space is adjusted to the thermodynamics of SU(3) gauge field theory in the temperature range 1 - 10 $T/T_c$ to calculate holographically the bulk viscosity in 4-dim. Minkowski space. Various settings are compared, and it is argued that, upon an adjustment of the scalar potential to reproduce exactly the lattice data within a restricted temperature interval above $T_c$, rather robust values of the bulk viscosity to entropy density ratio are obtained.

R. Yaresko; B. Kampfer

2014-03-14T23:59:59.000Z

394

From Stopping to Viscosity in Heavy Ion Collisions  

SciTech Connect (OSTI)

Stopping in heavy ion collisions is investigated with the aim of learning about the shear viscosity of nuclear matter. Boltzmann equation simulations are compared to available data on stopping in the energy range of 20-117 MeV/nucleon. Stopping observables used include momentum anisotropy and linear momentum transfer. The data show that modeling the transport with free nucleon-nucleon cross-sections is inaccurate and reduced cross-sections are required. Reduction of the cross-sections produces an increase in the shear viscosity of nuclear matter, compared to calculations based on free cross-sections.

Barker, Brent W.; Danielewicz, Pawel [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)

2010-04-26T23:59:59.000Z

395

ParaDyn Implementation in the US Navy's DYSMAS Simulation System: FY08 Progress Report  

SciTech Connect (OSTI)

The goal of this project is to increase the computational efficiency and capacity of the Navy's DYSMAS simulation system for full ship shock response to underwater explosion. Specifically, this project initiates migration to a parallel processing capability for the structural portion of the overall fluid-structure interaction model. The capstone objective for the first phase is to demonstrate operation of the DYSMAS simulation engine with a production model on a Naval Surface Warfare Center (IHD) parallel platform using the ParaDyn code for parallel processing of the structural dynamics. This year saw a successful launch to integrate ParaDyn, the high-parallel structural dynamics code from Lawrence Livermore National Laboratory (LLNL), into the DYSMAS system for simulating the response of ship structures to underwater explosion (UNDEX). The current LLNL version of DYNA3D, representing ten years of general development beyond the source branch used to initiate DYNA-N customization for DYSMAS, was first connected to the GEMINI flow code through DYSMAS Standard Coupler Interface (SCI). This permitted an early 'sanity check' by Naval Surface Warfare Center, Indian Head Division (NSWC-IHD) personnel that equivalent results were generated for their standard UNDEX test problems, thus ensuring the Verification & Validation pedigree they have developed remains intact. The ParaDyn code was then joined to the SCI in a manner requiring no changes to GEMINI. Three NSWC-IHD engineers were twice hosted at LLNL to become familiar with LLNL computer systems, the execution of the prototype software system, and to begin assessment of its accuracy and performance. Scaling data for the flow solver GEMINI was attained up to a one billion cell, 1000 processor run. The NSWC-IHD engineers were granted privileges to continue their evaluations through remote connections to LLNL's Open Computing Facility. Finally, the prototype changes were integrated into the mainline ParaDyn source repository and issued as part of its Version 8.1 beta release. This source was transmitted to NSWC-IHD and in collaboration with LLNL personnel the entire ParaDyn software suite successfully installed and demonstrated on its new SGI Altix machine. The ability of even minor numbers of processors for the structural dynamics to impact overall time-to-solution for DYSMAS has been demonstrated. Assessments of combined parallel efficiencies are beginning to highlight areas for further DYSMAS optimizations.

Ferencz, R M; DeGroot, A J; Lin, J I; Zywicz, E; Durrenberger, J K; Sherwood, R J; Corey, I R

2008-07-29T23:59:59.000Z

396

Shear Viscosity to Entropy within a Parton Cascade  

E-Print Network [OSTI]

The shear viscosity is calculated by means of the perturbative kinetic partonic cascade BAMPS with CGC initial conditons for various saturation momentum scale Q_s. eta/s ~ 0.15 stays approximately constant when going from RHIC to LHC.

A. El; C. Greiner; Z. Xu

2007-06-28T23:59:59.000Z

397

Universal viscosity to entropy density ratio from entanglement  

SciTech Connect (OSTI)

We present evidence that the universal Kovtun-Son-Starinets shear viscosity to entropy density ratio of 1/4{pi} can be associated with a Rindler causal horizon in flat spacetime. Since there is no known holographic (gauge/gravity) duality for this spacetime, a natural microscopic explanation for this viscosity is in the peculiar properties of quantum entanglement. In particular, it is well known that the Minkowski vacuum state is a thermal state and carries an area entanglement entropy density in the Rindler spacetime. Based on the fluctuation-dissipation theorem, we expect a similar notion of viscosity arising from vacuum fluctuations. Therefore, we propose a holographic Kubo formula in terms of a two-point function of the stress tensor of matter fields in the bulk. We calculate this viscosity assuming a minimally coupled scalar field theory and find that the ratio with respect to the entanglement entropy density is exactly 1/4{pi} in four dimensions. The issues that arise in extending this result to nonminimally coupled scalar fields, higher spins, and higher dimensions provide interesting hints about the relationship between entanglement entropy and black hole entropy.

Chirco, Goffredo; Eling, Christopher; Liberati, Stefano [SISSA, Via Bonomea 265, 34136 Trieste (Italy) and INFN Sezione di Trieste, Via Valerio 2, 34127 Trieste (Italy)

2010-07-15T23:59:59.000Z

398

Viscosity from elliptic flow: the path to precision  

E-Print Network [OSTI]

Using viscous relativistic hydrodynamics we show that systematic studies of the impact parameter dependence of the eccentricity scaled elliptic flow can distinguish between different models for the calculation of the initial source eccentricity. This removes the largest present uncertainty in the extraction of the specific viscosity of the matter created in relativistic heavy-ion collisions from precise elliptic flow measurements.

Ulrich W. Heinz; J. Scott Moreland; Huichao Song

2009-08-18T23:59:59.000Z

399

Shear viscosity of boost invariant plasma at finite coupling  

E-Print Network [OSTI]

We discuss string theory alpha' corrections in the dual description of the expanding boost invariant N=4 supersymmetric Yang-Mills plasma at strong coupling. We compute finite 't Hooft coupling corrections to the shear viscosity and find that it disagrees with the equilibrium correlation function computations. We comment on the possible source of the discrepancy.

Alex Buchel

2008-01-29T23:59:59.000Z

400

Stress tensor and bulk viscosity in relativistic nuclear collisions  

E-Print Network [OSTI]

We discuss the influence of different initial conditions for the stress tensor and the effect of bulk viscosity on the expansion and cooling of the fireball created in relativistic heavy ion collisions. In particular, we explore the evolution...however, it does not significantly increase the entropy produced....

Fries, Rainer J.; Mueller, Berndt; Schaefer, Andreas.

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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

Viscosity of aqueous and cyanate ester suspensions containing alumina nanoparticles  

SciTech Connect (OSTI)

The viscosities of both aqueous and cyanate ester monomer (BECy) based suspensions of alumina nanoparticle were studied. The applications for these suspensions are different: aqueous suspensions of alumina nanoparticles are used in the production of technical ceramics made by slip casting or tape casting, and the BECy based suspensions are being developed for use in an injection-type composite repair resin. In the case of aqueous suspensions, it is advantageous to achieve a high solids content with low viscosity in order to produce a high quality product. The addition of a dispersant is useful so that higher solids content suspensions can be used with lower viscosities. For BECy suspensions, the addition of nanoparticles to the BECy resin is expected to enhance the mechanical properties of the cured composite. The addition of saccharides to aqueous suspensions leads to viscosity reduction. Through DSC measurements it was found that the saccharide molecules formed a solution with water and this resulted in lowering the melting temperature of the free water according to classic freezing point depression. Saccharides also lowered the melting temperature of the bound water, but this followed a different rule. The shear thinning and melting behaviors of the suspensions were used to develop a model based on fractal-type agglomeration. It is believed that the structure of the particle flocs in these suspensions changes with the addition of saccharides which leads to the resultant viscosity decrease. The viscosity of the BECy suspensions increased with solids content, and the viscosity increase was greater than predicted by the classical Einstein equation for dilute suspensions. Instead, the Mooney equation fits the viscosity behavior well from 0-20 vol% solids. The viscosity reduction achieved at high particle loadings by the addition of benzoic acid was also investigated by NMR. It appears that the benzoic acid interacts with the surface of the alumina particle which may be the cause of the viscosity reduction. The flow behavior of alumina particles in water and BECy is markedly different. Aqueous alumina suspensions are shear thinning at all alumina loadings and capable of 50 vol% loading before losing fluidity whereas BECy/alumina suspensions show Newtonian behavior up to 5 vol%, and above 5 vol% show shear thinning at all shear rates. Highly loaded suspensions (i.e. 20vol% alumina) exhibit shear thinning at low and moderate shear rates and shear thickening at higher shear rates. The maximum particle loading for a fluid suspension, in this case, appears to be about 20 vol%. The difference in the viscosity of these suspensions must be related to the solvent-particle interactions for each system. The reason is not exactly known, but there are some notable differences between BECy and water. Water molecules are {approx}0.28 nm in length and highly hydrogen bonded with a low viscosity (1 mPa's) whereas in the cyanate ester (BECy) system, the solvent molecule is about 1.2 nm, in the largest dimension, with surfaces of varied charge distribution throughout the molecule. The viscosity of the monomer is also reasonably low for organic polymer precursor, about 7 mPa's. Nanoparticles in water tend to agglomerate and form flocs which are broken with the shear force applied during viscosity measurement. The particle-particle interaction is very important in this system. In BECy, the particles appear to be well dispersed and not as interactive. The solvent-particle interaction appears to be most important. It is not known exactly how the alumina particles interact with the monomer, but NMR suggests hydrogen bonding. These hydrogen bonds between the particle and monomer could very well affect the viscosity. A conclusion that can be reached in this work is that the presence of hydroxyl groups on the surface of the alumina particles is significant and seems to affect the interactions between other particles and the solvent. Thus, the hydrogen bonding between particles, particle/additive and/or particle/solvent dictates the behavior of nanos

Lawler, Katherine

2009-08-05T23:59:59.000Z

402

Effect of viscosity on the plasma decay in a magnetic field  

SciTech Connect (OSTI)

The effect of viscosity on the evolution of an axisymmetric plasma column in a longitudinal magnetic field is considered. It is found that, under the action of viscosity, the plasma density profile tends to become Gaussian.

Timofeev, A. V.; Kuyanov, A. Yu. [Russian Research Centre Kurchatov Institute (Russian Federation)

2010-11-15T23:59:59.000Z

403

Synthesis and evaluation of an oil-soluble viscosity reducer for heavy oil  

Science Journals Connector (OSTI)

To reduce the viscosity of highly-viscous oil of the Tahe oilfield (Xinjiang, China), an oilsoluble polybasic copolymer viscosity reducer for heavy oil was synthesized using the orthogonal method. The optimum ...

Jixiang Guo; Heyi Wang; Chaogang Chen; Yun Chen; Xiaohai Xie

2010-12-01T23:59:59.000Z

404

Determination of fluid viscosities from biconical annular geometries: Experimental and modeling studies  

E-Print Network [OSTI]

to measure the viscosity of a fluid at downhole conditions. The design investigated in this study addresses several limitations encountered in previous designs. The prototype was calibrated and tested with fluids with viscosities ranging from 1 to 28 cp under...

Rondon, Nolys Javier

2009-05-15T23:59:59.000Z

405

Viscosity of Bacterial Suspensions: Hydrodynamic Interactions and Self-Induced Noise Shawn D. Ryan,1, 2  

E-Print Network [OSTI]

Viscosity of Bacterial Suspensions: Hydrodynamic Interactions and Self-Induced Noise Shawn D. Ryan, 2011) The viscosity of a suspension of swimming bacteria is investigated analytically and numerically fluid, result in a dramatic reduction of the effective viscosity. In agreement with experiments

Berlyand, Leonid

406

Bulk viscosity of superfluid hyperon stars Mikhail E. Gusakov and Elena M. Kantor  

E-Print Network [OSTI]

Bulk viscosity of superfluid hyperon stars Mikhail E. Gusakov and Elena M. Kantor Ioffe Physical; published 14 October 2008) We calculate the bulk viscosity due to nonequilibrium weak processes bulk viscosity coefficients, with only three of them being independent. In addition, we correct

407

Process for stabilizing the viscosity characteristics of coal derived materials and the stabilized materials obtained thereby  

DOE Patents [OSTI]

A process is disclosed for stabilizing the viscosity of coal derived materials such as an SRC product by adding up to 5.0% by weight of a light volatile phenolic viscosity repressor. The viscosity will remain stabilized for a period of time of up to 4 months.

Bronfenbrenner, James C. (Allentown, PA); Foster, Edward P. (Allentown, PA); Tewari, Krishna (Allentown, PA)

1985-01-01T23:59:59.000Z

408

Viscosity and longest relaxation time of semi-dilute polymer solutions. I. Good solvent  

E-Print Network [OSTI]

1185 Viscosity and longest relaxation time of semi-dilute polymer solutions. I. Good solvent M expliqués par un modèle de reptation classique. Abstract. 2014 The zero shear viscosity and longest concentration (4 c/c* 70), we find that : 2014 both the relative viscosity ~r and the longest relaxation time TR

Paris-Sud XI, Université de

409

Viscosity and solute dependence of F-actin translocation by rabbit skeletal heavy meromyosin  

E-Print Network [OSTI]

Viscosity and solute dependence of F-actin translocation by rabbit skeletal heavy meromyosin P, Ying Chen, Kristi L. Kulin, and Thomas L. Daniel. Viscosity and solute dependence of F the hypothesis that solvent viscosity affects transloca- tion of rhodamine phalloidin-labeled F-actin by rabbit

Daniel, Tom

410

Viscosity of carbon nanotubes water based nanofluids: Influence of1 concentration and temperature2  

E-Print Network [OSTI]

1 Viscosity of carbon nanotubes water based nanofluids: Influence of1 concentration and temperature 0019 Fax: +33 (0) 2 23 23 40 5120 21 Abstract:22 23 Experimental results on the steady state viscosity, the nanofluids are quite Newtonian. It is also observed that the relative viscosity of30 nanofluids at high shear

Paris-Sud XI, Université de

411

Viscosity-Dependent Protein Dynamics Ilya J. Finkelstein, Aaron M. Massari, and M. D. Fayer  

E-Print Network [OSTI]

Viscosity-Dependent Protein Dynamics Ilya J. Finkelstein, Aaron M. Massari, and M. D. Fayer viscosity at room temperature in four heme proteins: hemoglobin, myoglobin, a myoglobin mutant replaced by an alanine (M61A). Fructose is added to increase the viscosity of the aqueous protein solutions

Fayer, Michael D.

412

Shear viscosity and shear thinning in two-dimensional Yukawa , J. Goree2  

E-Print Network [OSTI]

Shear viscosity and shear thinning in two-dimensional Yukawa liquids Z. Donk´o1 , J. Goree2 , P using two different nonequi- librium molecular dynamics simulation methods. Shear viscosity values.e., the viscosity diminishes with increasing shear rate. It is expected that two-dimensional dusty plasmas

Goree, John

413

Viscosity of magmas containing highly deformable bubbles M. Mangaa,*, M. Loewenbergb  

E-Print Network [OSTI]

Viscosity of magmas containing highly deformable bubbles M. Mangaa,*, M. Loewenbergb a Department The shear viscosity of a suspension of deformable bubbles dispersed within a Newtonian ¯uid is calculated. For small Ca, bubbles remain nearly spherical, and for suf®ciently large strains the viscosity of suspension

Manga, Michael

414

On viscosity solutions of certain Hamilton-Jacobi equations: Regularity results and generalized Sard's Theorems  

E-Print Network [OSTI]

On viscosity solutions of certain Hamilton-Jacobi equations: Regularity results and generalized prove that any viscosity solution of the corresponding Hamilton-Jacobi equation on the manifold M). Moreover, we prove that, under additional assumptions and in low dimension, any viscosity solution

Paris-Sud XI, Université de

415

Viscosity and elastic constants of amorphous Si and Ge Ann Witwow@ and Frans Spaepen  

E-Print Network [OSTI]

Viscosity and elastic constants of amorphous Si and Ge Ann Witwow@ and Frans Spaepen Division expansion. Viscous flow was measured by stress relaxation and was found to be Newtonian. The viscosity of the viscosity of sputter-deposited samples as a function of stress (to establish the Newtonian charac- ter

Spaepen, Frans A.

416

A Viscosity Approach to Total Variation Flows of Non-Divergence Type  

E-Print Network [OSTI]

A Viscosity Approach to Total Variation Flows of Non-Divergence Type Norbert Poz´ar Graduate School, we will introduce a notion of viscosity solutions for a class of singular nonlinear parabolic viscosity theory does not apply is the unboundedness of the operator on the right-hand side of (5) at u = 0

Ishii, Hitoshi

417

A low viscosity wedge in subduction zones Magali I. Billen *, Michael Gurnis  

E-Print Network [OSTI]

A low viscosity wedge in subduction zones Magali I. Billen *, Michael Gurnis Seismological mantle wedge), which could decrease the viscosity of the mantle locally by several orders of magnitude. Using numerical models we demonstrate that a low viscosity wedge has a dramatic influence on the force

Billen, Magali I.

418

The viscosity structure of the D00 layer of the Earth's mantle inferred  

E-Print Network [OSTI]

The viscosity structure of the D00 layer of the Earth's mantle inferred from the analysis layer Core�mantle boundary Viscosity Maxwell body a b s t r a c t The viscosity structure of the D00-diurnal to 18.6 years tidal deformations combined with model viscosity�depth profiles corresponding to a range

419

Viscosity of -pinene secondary organic material and implications for particle growth and reactivity  

E-Print Network [OSTI]

Viscosity of -pinene secondary organic material and implications for particle growth and reactivity of secondary organic material (SOM) are abun- dant in the lower troposphere. The viscosity of these particles-mobility" technique and a "poke-flow" technique, in conjunction with simulations of fluid flow, the viscosity

420

NEUROCOMPUTING JOURNAL SPECIAL ISSUE  

E-Print Network [OSTI]

NEUROCOMPUTING JOURNAL SPECIAL ISSUE "ARTIFICIAL BRAINS" Call for Papers Guest Editors Prof. Dr for review to a special issue of the Neurocomputing journal, on the theme of "Artificial Brains". Background, and more powerful FPGA based accelerator boards, etc. thus allowing builders of "artificial brains" more

Wojcik, Vladimir

Note: This page contains sample records for the topic "viscosity navy special" 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

Apparatus and method for high temperature viscosity and temperature measurements  

DOE Patents [OSTI]

A probe for measuring the viscosity and/or temperature of high temperature liquids, such as molten metals, glass and similar materials comprises a rod which is an acoustical waveguide through which a transducer emits an ultrasonic signal through one end of the probe, and which is reflected from (a) a notch or slit or an interface between two materials of the probe and (b) from the other end of the probe which is in contact with the hot liquid or hot melt, and is detected by the same transducer at the signal emission end. To avoid the harmful effects of introducing a thermally conductive heat sink into the melt, the probe is made of relatively thermally insulative (non-heat-conductive) refractory material. The time between signal emission and reflection, and the amplitude of reflections, are compared against calibration curves to obtain temperature and viscosity values.

Balasubramaniam, Krishnan (Mississippi State, MS); Shah, Vimal (Houston, TX); Costley, R. Daniel (Mississippi State, MS); Singh, Jagdish P. (Mississippi State, MS)

2001-01-01T23:59:59.000Z

422

Kinetic Alfven double layer formed by electron viscosity  

SciTech Connect (OSTI)

The effect of the electron viscosity on the kinetic Alfven solitary wave is investigated. It is found that small electron viscosity changes the electron motion along the magnetic field producing a boundary layer, and thus that in a low beta electron-ion plasma({beta} Much-Less-Than m{sub e}/m{sub i}), an obliquely propagating kinetic solitary Alfven wave can become a double layer. This double layer can exist in the sub-Alfvenic and super-Alfvenic regimes. The length scale of density drop for this double layer is on the order of that of the conventional kinetic solitary Alfven wave, and thus this double layer can accelerate electrons on a very short length scale.

Woo, M. H.; Ryu, C.-M. [Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Choi, C. R. [Department of Physics, Korea Advanced Institute of Science and Technology, Taejon 305-701 (Korea, Republic of)

2012-07-15T23:59:59.000Z

423

Viscosity Dependence of the Folding Rates of Proteins  

Science Journals Connector (OSTI)

The viscosity (?) dependence of the folding rates for four sequences (the native state of three sequences is a ? sheet, while the fourth forms an ? helix) is calculated for off-lattice models of proteins. Assuming that the dynamics is given by the Langevin equation, we show that the folding rates increase linearly at low viscosities ?, decrease as 1/? at large ?, and have a maximum at intermediate values. The Kramers' theory of barrier crossing provides a quantitative fit of the numerical results. By mapping the simulation results to real proteins we estimate that for optimized sequences the time scale for forming a four turn ?-helix topology is about 500 ns, whereas for ? sheet it is about 10 ?s.

D. K. Klimov and D. Thirumalai

1997-07-14T23:59:59.000Z

424

Viscosity and the phenomenon of percolation in microemulsions  

Science Journals Connector (OSTI)

The viscosity of water/AOT/oil microemulsions (undecane, isooctane, cyclohexane) has been studied as a function of the molar ratio n=[water]/[AOT] and the volume fraction ? (water + AOT) at T=25 C. [Here AOT is an abbreviation for sodium bis(2-ethylhexyl)sulfosuccinate.] At constant ? and variable n, the presence of a maximum viscosity can be observed. The results are discussed in connection with a percolation model and a very good qualitative agreement is obtained. The results are compatible with those obtained previously on the conductivity and complex permittivity of these microemulsions. The results show the importance of the idea of percolation threshold lines. Emphasis is placed on the importance of interactions and on the necessity of following an experimental procedure involving constant interaction (for either ternary or quaternary systems).

J. Peyrelasse; M. Moha-Ouchane; C. Boned

1988-10-15T23:59:59.000Z

425

Mantle viscosity and ice-age ice sheet topography  

SciTech Connect (OSTI)

Ice-age paleotopography and mantle viscosity can both be inferred from observations of Earth`s response to the most recent deglaciation event of the current ice age. This procedure requires iterative application of a theoretical model of the global process of glacial isostatic adjustment. Results demonstrate that the iterative inversion procedure converges to a paleotopography that is extremely close to that from the ICE-4G model. The accompanying mantle viscosity profile is furthermore shown to reconcile the requirements of aspherical geoid anomalies related to the mantle convection process, thus resolving a fundamental issue concerning mantle rheology. The combined model also explains postglacial sea level histories for the east cost of the United States. 28 refs., 9 figs.

Peltier, W.R. [Univ. of Toronto, Ontario (Canada)

1996-09-06T23:59:59.000Z

426

Departments of the Navy, Energy and Agriculture Invest in Construction of Three Biorefineries to Produce Drop-In Biofuel for Military  

Broader source: Energy.gov [DOE]

As part of a 2011 Presidential directive, the Departments of Navy, Energy, and Agriculture announced today that three companies have been awarded contracts to construct and commission biorefineries capable of producing drop-in biofuels to meet the transportation needs of the military and private sector.

427

The Navy must be ready to fight and win today, while building the ability to prevail into the future. Education is our asymmetric advantage in developing  

E-Print Network [OSTI]

into the future. Education is our asymmetric advantage in developing leaders with the attributes necessary prized and valuable resource. Education is our Navy's strategic investment to enhance effectiveness 200 years, focused education will play an increasingly vital role. In the future, our operational

428

Magnetic component of gluon plasma and its viscosity  

E-Print Network [OSTI]

We discuss the role of the magnetic degrees of freedom of the gluon plasma in its viscosity. The main assumption is that motions of the magnetic component and of the rest of the plasma can be considered as independent. The magnetic component in the deconfined phase is described by a three-dimensional (Euclidean) field theory. The parameters of the theory can be estimated phenomenologically, from the lattice data. It is not ruled out that the magnetic component is superfluid.

M. N. Chernodub; H. Verschelde; V. I. Zakharov

2009-05-15T23:59:59.000Z

429

Shear viscosity and chemical equilibration of the QGP  

E-Print Network [OSTI]

We have investigated, in the frame work of the transport approach, different aspects of the QGP created in Heavy Ion Collisions at RHIC and LHC energies. The shear viscosity $\\eta$ has been calculated by using the Green-Kubo relation at the cascade level. We have compared the numerical results for $\\eta$ obtained from the Green-Kubo correlator with the analytical formula in both the Relaxation Time Approximation (RTA) and the Chapman-Enskog approximation (CE). From this comparison we show that in the range of temperature explored in a Heavy Ion collision the RTA underestimates the viscosity by about a factor of 2, while a good agreement is found between the CE approximation and Gree-Kubo relation already at first order of approximation. The agreement with the CE approximation supplies an analytical formula that allows to develop kinetic transport theory at fixed shear viscosity to entropy density ratio, $\\eta/s$. We show some results for the build up of anisotropic flows $v_{2}$ in a transport approach at fixed shear viscosity to entropy density ratio, $\\eta/s$. We study the impact of a T-dependent $\\eta/s(T)$ on the generation of the elliptic flows at both RHIC and LHC. We show that the transport approach provides, in a unified way, a tool able to naturally describe the $v_{2}(p_{T})$ in a wide range of $p_{T}$, including also the description of the rise and fall and saturation of the $v_{2}(p_{T})$ observed at LHC. Finally, we have studied the evolution of the quark-gluon composition employing a Boltzmann-Vlasov transport approach that include: the mean fields dynamics, associated to the quasi-particle model, and the elastic and inelastic collisions for massive quarks and gluons. Following the chemical evolution from an initial gluon dominated plasma we predict a quark dominance close to $T_{C}$ paving the way to an hadronization via quark coalescence.

Salvatore Plumari; Armando Puglisi; Maria Colonna; Francesco Scardina; Vincenzo Greco

2012-09-04T23:59:59.000Z

430

Viscosity and Diffusion: Crowding and Salt Effects in Protein Solutions  

E-Print Network [OSTI]

We report on a joint experimental-theoretical study of collective diffusion in, and static shear viscosity of solutions of bovine serum albumin (BSA) proteins, focusing on the dependence on protein and salt concentration. Data obtained from dynamic light scattering and rheometric measurements are compared to theoretical calculations based on an analytically treatable spheroid model of BSA with isotropic screened Coulomb plus hard-sphere interactions. The only input to the dynamics calculations is the static structure factor obtained from a consistent theoretical fit to a concentration series of small-angle X-ray scattering (SAXS) data. This fit is based on an integral equation scheme that combines high accuracy with low computational cost. All experimentally probed dynamic and static properties are reproduced theoretically with an at least semi-quantitative accuracy. For lower protein concentration and low salinity, both theory and experiment show a maximum in the reduced viscosity, caused by the electrostatic repulsion of proteins. The validity range of a generalized Stokes-Einstein (GSE) relation connecting viscosity, collective diffusion coefficient, and osmotic compressibility, proposed by Kholodenko and Douglas [PRE 51, 1081 (1995)] is examined. Significant violation of the GSE relation is found, both in experimental data and in theoretical models, in semi-dilute systems at physiological salinity, and under low-salt conditions for arbitrary protein concentrations.

Marco Heinen; Fabio Zanini; Felix Roosen-Runge; Diana Fedunov; Fajun Zhang; Marcus Hennig; Tilo Seydel; Ralf Schweins; Michael Sztucki; Marin Antalk; Frank Schreiber; Gerhard Ngele

2011-09-14T23:59:59.000Z

431

Viscosity model for gases in the transition regime  

Science Journals Connector (OSTI)

We have studied a model of tangential viscosity of a fluid in which high-order spatial derivatives of the velocity are taken into account. The model indicates that for a gas in the transition regime, and within a range of boundary conditions, the tangential stress presents an oscillatory dependence on the density. An experiment designed to detect these oscillations was done with helium at constant temperature T=294K and varying the pressure within the range 0.5-50 mTorr. The results were found to be in good agreement with the oscillations predicted by our model when the spatial derivative of the fluid velocity near the boundaries was close to zero. From the separation in density between these oscillations, it is possible to obtain an independent measurement of the atomic mean cross section for helium. This method makes specific use of the way the viscosity oscillates with the density in the transition regime instead of using the value that the viscosity takes in the continuous regime. The good agreement between our measurements of the cross section and the values that have been obtained by other methods gives an indication of the validity of the proposed model.

D. Moronta and M. Garca-Sucre

1978-08-01T23:59:59.000Z

432

Thermal Diffusivity and Viscosity of Suspensions of Disc Shaped Nanoparticles  

E-Print Network [OSTI]

In this work we conduct a transient heat conduction experiment with an aqueous suspension of nanoparticle disks of Laponite JS, a sol forming grade, using laser light interferometry. The image sequence in time is used to measure thermal diffusivity and thermal conductivity of the suspension. Imaging of the temperature distribution is facilitated by the dependence of refractive index of the suspension on temperature itself. We observe that with the addition of 4 volume % of nano-disks in water, thermal conductivity of the suspension increases by around 30%. A theoretical model for thermal conductivity of the suspension of anisotropic particles by Fricke as well as by Hamilton and Crosser explains the trend of data well. In turn, it estimates thermal conductivity of the Laponite nanoparticle itself, which is otherwise difficult to measure in a direct manner. We also measure viscosity of the nanoparticle suspension using a concentric cylinder rheometer. Measurements are seen to follow quite well, the theoretical relation for viscosity of suspensions of oblate particles that includes up to two particle interaction. This result rules out the presence of clusters of particles in the suspension. The effective viscosity and thermal diffusivity data show that the shape of the particle has a role in determining enhancement of thermophysical properties of the suspension.

Susheel S. Bhandari; K. Muralidhar; Yogesh M Joshi

2014-03-05T23:59:59.000Z

433

Bound on viscosity and the generalized second law of thermodynamics  

SciTech Connect (OSTI)

We describe a new paradox for ideal fluids. It arises in the accretion of an ideal fluid onto a black hole, where, under suitable boundary conditions, the flow can violate the generalized second law of thermodynamics. The paradox indicates that there is in fact a lower bound to the correlation length of any real fluid, the value of which is determined by the thermodynamic properties of that fluid. We observe that the universal bound on entropy, itself suggested by the generalized second law, puts a lower bound on the correlation length of any fluid in terms of its specific entropy. With the help of a new, efficient estimate for the viscosity of liquids, we argue that this also means that viscosity is bounded from below in a way reminiscent of the conjectured Kovtun-Son-Starinets lower bound on the ratio of viscosity to entropy density. We conclude that much light may be shed on the Kovtun-Son-Starinets bound by suitable arguments based on the generalized second law.

Fouxon, Itzhak; Betschart, Gerold; Bekenstein, Jacob D. [Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904 (Israel)

2008-01-15T23:59:59.000Z

434

Bound on viscosity and the generalized second law of thermodynamics  

Science Journals Connector (OSTI)

We describe a new paradox for ideal fluids. It arises in the accretion of an ideal fluid onto a black hole, where, under suitable boundary conditions, the flow can violate the generalized second law of thermodynamics. The paradox indicates that there is in fact a lower bound to the correlation length of any real fluid, the value of which is determined by the thermodynamic properties of that fluid. We observe that the universal bound on entropy, itself suggested by the generalized second law, puts a lower bound on the correlation length of any fluid in terms of its specific entropy. With the help of a new, efficient estimate for the viscosity of liquids, we argue that this also means that viscosity is bounded from below in a way reminiscent of the conjectured Kovtun-Son-Starinets lower bound on the ratio of viscosity to entropy density. We conclude that much light may be shed on the Kovtun-Son-Starinets bound by suitable arguments based on the generalized second law.

Itzhak Fouxon; Gerold Betschart; Jacob D. Bekenstein

2008-01-10T23:59:59.000Z

435

Can dark energy viscosity be detected with the Euclid survey?  

Science Journals Connector (OSTI)

Recent work has demonstrated that it is important to constrain the dynamics of cosmological perturbations, in addition to the evolution of the background, if we want to distinguish among different models of the dark sector. Especially the anisotropic stress of the (possibly effective) dark energy fluid has been shown to be an important discriminator between modified gravity and dark energy models. In this paper we use approximate analytical solutions of the perturbation equations in the presence of viscosity to study how the anisotropic stress affects the weak lensing and galaxy power spectrum. We then forecast how sensitive the photometric and spectroscopic Euclid surveys will be to both the speed of sound and the viscosity of our effective dark energy fluid when using weak lensing tomography and the galaxy power spectrum. We find that Euclid alone can only constrain models with a very small speed of sound and viscosity, while it will need the help of other observables in order to give interesting constraints on models with a sound speed close to one. This conclusion is also supported by the expected Bayes factor between models.

Domenico Sapone; Elisabetta Majerotto; Martin Kunz; Bianca Garilli

2013-08-05T23:59:59.000Z

436

Can dark energy viscosity be detected with the Euclid survey?  

E-Print Network [OSTI]

Recent work has demonstrated that it is important to constrain the dynamics of cosmological perturbations, in addition to the evolution of the background, if we want to distinguish among different models of the dark sector. Especially the anisotropic stress of the (possibly effective) dark energy fluid has been shown to be an important discriminator between modified gravity and dark energy models. In this paper we use approximate analytical solutions of the perturbation equations in the presence of viscosity to study how the anisotropic stress affects the weak lensing and galaxy power spectrum. We then forecast how sensitive the photometric and spectroscopic Euclid surveys will be to both the speed of sound and the viscosity of our effective dark energy fluid when using weak lensing tomography and the galaxy power spectrum. We find that Euclid alone can only constrain models with very small speed of sound and viscosity, while it will need the help of other observables in order to give interesting constraints on models with a sound speed close to one. This conclusion is also supported by the expected Bayes factor between models.

Domenico Sapone; Elisabetta Majerotto; Martin Kunz; Bianca Garilli

2013-05-08T23:59:59.000Z

437

Quantum Bound of the Shear Viscosity of a Strongly Coupled Plasma  

Science Journals Connector (OSTI)

String theory methods led to the hypothesis that the ratio of a shear viscosity coefficient to the volume density of entropy of any physical system has a lower bound. Systems with strong coupling have a small viscosity as compared to weakly coupled plasmas in which the viscosity is proportional to the mean free path. Here, we have estimated the fully ionized strongly coupled plasma viscosity based on the dynamic experimental data on electrical conductivity and have shown that the ratio of viscosity to entropy of the strongly coupled plasma is very close to that of the lower bound predicted by the string theory.

V. E. Fortov and V. B. Mintsev

2013-09-17T23:59:59.000Z

438

From US NAVY Mate to Division Leader for Operations - Requirements, Development and Career Paths of LANL/LANSCE Accelerator Operators  

SciTech Connect (OSTI)

There are opportunities for advancement within the team. Operators advance by: (1) Becoming fully qualified - following the LANSCE Accelerator Operator Training Manual, Operator trainees go through 5 levels of qualification, from Radiation Security System to Experimental Area Operator. Must obtain Knowledge and Performance checkouts by an OSS or AOSS, and an End-of-Card checkout by the team leader or RSS engineer (level I). Program was inspired by US NAVY qualification program for nuclear reactor operators. Time to complete: 2-2.5 years. (2) Fully qualified operators are eligible to apply for vacant (OSS)/AOSS positions; and (3) Alternatively, experienced operators can sign up for the voluntary Senior Operator Qualification Program. They must demonstrate in-depth knowledge of all areas of the accelerator complex. Time to complete is 2-3 years (Minimum 4 years from fully qualified). Eligible for promotion to level between qualified operator and AOSS.

Spickermann, Thomas [Los Alamos National Laboratory

2012-07-26T23:59:59.000Z

439

Relation between fuel properties and chemical composition. II. Chemical characterization of US Navy Shale-II fuels  

SciTech Connect (OSTI)

The Navy has completed two crude production/refining exercises with shale. The first of these was a 10,000 barrel operation (Shale-I). The second, a 73,000 barrel operation (Shale-II), was completed in 1979 at the Toledo refinery of Sohio. This paper describes the chemical characterization of the JP-5 and DFM from the Shale-II project. The information presented in this paper shows that shale oil has an excellent potential as a source for high quality middle distillate fuels. The composition of such fuels may vary widely, however, depending on the overall refining process. Much work is needed to explore other refining options and to examine the effect of refining on finished fuel composition and properties.

Solash, J.; Hazlett, R.N.; Burnett, J.C.; Beal, E.; Hall, J.M.

1980-01-01T23:59:59.000Z

440

Special Report: IG-0767  

Broader source: Energy.gov (indexed) [DOE]

Special Report Special Report Expansion of the Strategic Petroleum Reserve DOE/IG-0767 June 2007 Department of Energy Washington, DC 20585 June 19, 2007 pector General SUBJE INFORMATION: Special Report on "Expansion of the Strategic Petroleum Reserve" INTRODUCTION The Energy Policy Act of 2005 required the Department of Energy to expand the Strategic Petroleum Reserve's (Reserve) maximum storage capacity to 1 billion barrels of crude oil. The Department stores the oil in large underground caverns, which have been created in salt domes. After evaluating various alternatives, the Department decided to develop a new 160 million barrel storage facility at Richton, Mississippi, and to expand the storage capacity at two existing

Note: This page contains sample records for the topic "viscosity navy special" 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

An Analysis of Stream Culvert Fish Passage on the Navy Railroad Line between Bremerton and Shelton, Washington  

SciTech Connect (OSTI)

The Navy railroad service line runs between Shelton, Bremerton, and Silverdale, and is used by the Navy to transfer freight to its facilities. It is also used by commercial clients to ship service items and bulk cargo for municipalities along portions of the route. Culverts of various size and construction convey streams and stormwater runoff under the railroad line. These allow transfer of water and, in some cases allow for passage of juvenile and adult salmon into waters upstream of the culverts. As part of this project, 21 culverts along a 34-mile reach (Shelton to Bremerton) of this railroad were surveyed to evaluate their function and ability to allow salmon to utilize the streams. The culverts and attached watersheds were evaluated using criteria developed by the Washington Department of Fish and Wildlife to assign a Priority Index (PI) to barriers present on each fish-bearing stream. The PI is a relative numeric rating indicator, assigned using consistent criteria related to the degree of potential habitat gained by removing barriers and improving the function of the watershed. Of the 21 culverts evaluated, five were found to be complete fish-passage barriers and six were found to be partial barriers, primarily to juvenile salmon. Three of these culverts had PI ratings above 10 and five others had ratings between 7 and 10. Corrective action can be taken based on any PI rating, but the WDFW normally assigns lower priority to projects with PI scores lower than 15. Several of the stream and culverts had previously been evaluated for structural integrity and function and have been scheduled for repair. A narrative indicating the condition of the culvert has been prepared as well as a table indicating the PI scores and a summary of recommendations for action for each culvert.

May, Christopher W.; Miller, Martin C.; Southard, John A.

2004-10-25T23:59:59.000Z

442

de Sitter special relativity  

E-Print Network [OSTI]

A special relativity based on the de Sitter group is introduced, which is the theory that might hold up in the presence of a non-vanishing cosmological constant. Like ordinary special relativity, it retains the quotient character of spacetime, and a notion of homogeneity. As a consequence, the underlying spacetime will be a de Sitter spacetime, whose associated kinematics will differ from that of ordinary special relativity. The corresponding modified notions of energy and momentum are obtained, and the exact relationship between them, which is invariant under a re-scaling of the involved quantities, explicitly exhibited. Since the de Sitter group can be considered a particular deformation of the Poincar\\'e group, this theory turns out to be a specific kind of deformed (or doubly) special relativity. Some experimental consequences, as well as the causal structure of spacetime--modified by the presence of the de Sitter horizon--are briefly discussed.

R. Aldrovandi; J. P. Beltran Almeida; J. G. Pereira

2007-02-08T23:59:59.000Z

443

Special Relativity Reconsidered  

Science Journals Connector (OSTI)

...that alternative theoriessuch as string theory, which assumes that every particle is really a tiny vibrating stringmight not completely jibe with special...breeze. Experimenters hope to detect oscillating effects as Earth whizzes and spins...

Adrian Cho

2005-02-11T23:59:59.000Z

444

Sweeping has no effect on renormalized turbulent viscosity  

E-Print Network [OSTI]

We employ renormalization group techniques (RG) to the Navier-Stokes equation in the presence of constant mean velocity field $\\mathbf U_0$, and show that the renormalized viscosity is independent of $\\mathbf U_0$. Thus we demonstrates that the renormalized parameter in Eulerian field theory is Galilean invariant, and it is unaffected by the "sweeping effect", contrary to the results of Kraichnan [Phys. Fluids {\\bf 7}, 1723 (1964)] on random Galilean invariance. Using direct numerical simulation, we show that the correlation functions for $\\mathbf U_0 =0$ and $\\mathbf U_0 \

Mahendra K. Verma; Abhishek Kumar

2014-11-11T23:59:59.000Z

445

Sweeping has no effect on renormalized turbulent viscosity  

E-Print Network [OSTI]

We employ renormalization group techniques (RG) to the Navier-Stokes equation in the presence of constant mean velocity field $\\mathbf U_0$, and show that the renormalized viscosity is independent of $\\mathbf U_0$. Thus we demonstrates that the renormalized parameter in Eulerian field theory is Galilean invariant, and it is unaffected by the "sweeping effect", contrary to the results of Kraichnan [Phys. Fluids {\\bf 7}, 1723 (1964)] on random Galilean invariance. Using direct numerical simulation, we show that the correlation functions for $\\mathbf U_0 =0$ and $\\mathbf U_0 \

Verma, Mahendra K

2014-01-01T23:59:59.000Z

446

Viscosity in X-ray clusters: Braginskii over 5  

E-Print Network [OSTI]

We argue that it is currently impossible to simulate X-ray clusters using correct equations, because even the MHD description is not applicable. But since fluid simulations actually reproduce observations quite well, one may try to improve the fluid codes by including molecular transport of heat and momentum. We calculate the effective molecular viscosity for the simplest model of magnetic field and obtain 1/5 of the Braginskii value, similar to 1/3 of Spitzer for the heat conduction. This is large enough to noticeably damp the X-ray cluster turbulence.

A. Gruzinov

2006-11-07T23:59:59.000Z

447

Measurement of surface tension and viscosity by open capillary techniques  

DOE Patents [OSTI]

An open-channel capillary is provided, having preferably a v-shaped groove in a flat wettable surface. The groove has timing marks and a source marker in which the specimen to be tested is deposited. The time of passage between the timing marks is recorded, and the ratio of surface tension .gamma. to viscosity .mu. is determined from the equation given below: ##EQU1## where h.sub.0 is the groove depth, .alpha. is the groove angle, .theta. is the liquid/solid contact angle, and t is the flow time. It has been shown by the

Rye,Robert R. (Albuquerque, NM), Yost,Frederick G. (Cedar Crest, NM)

1998-01-01T23:59:59.000Z

448

Special Report: IG-0777  

Broader source: Energy.gov (indexed) [DOE]

Special Report Special Report Loan Guarantees for Innovative Energy Technologies DOE/IG-0777 September 2007 Department of Energy vvast~lngton, U L L U 3 d 3 S e p t e m b e r 1 9 , 2007 MEMORANDUM FOR THE SECRETARY FROM: Inspector General SUBSEC'T: INFORMATION: Special Repol-t on "Loan Guarantees for Iilnovative Energy 'Technologies" BACKGROUND 'Title XVlI of the Energy Policy Act of 2005 authorized the Departinent of Energy to provide loan guarantees for projects that "avoid, reduce, or sequester air pollutants or ;~~lthropogenit. elnissions o l grecnlluuse gases and ei~lploy ~ I S W 01- significai~ilji i l ~ i p r o ~ c d energy production techilologies as compared to coininercial technologies in service in the Uilitcd States." Cui-rei~tly, the Department has $4 billion in loan guarantee authority and

449

Viscosity of bacterial suspensions : hydrodynamic interactions and self-induced noise.  

SciTech Connect (OSTI)

The viscosity of a suspension of swimming bacteria is investigated analytically and numerically. We propose a simple model that allows for efficient computation for a large number of bacteria. Our calculations show that long-range hydrodynamic interactions, intrinsic to self-locomoting objects in a viscous fluid, result in a dramatic reduction of the effective viscosity. In agreement with experiments on suspensions of Bacillus subtilis, we show that the viscosity reduction is related to the onset of large-scale collective motion due to interactions between the swimmers. The simulations reveal that the viscosity reduction occurs only for relatively low concentrations of swimmers: Further increases of the concentration yield an increase of the viscosity. We derive an explicit asymptotic formula for the effective viscosity in terms of known physical parameters and show that hydrodynamic interactions are manifested as self-induced noise in the absence of any explicit stochasticity in the system.

Ryan, S. D.; Haines, B. M.; Berlyand, L. V.; Ziebert, F.; Aranson, I. S. (Materials Science Division); (Pennsylvania State Univ.); (UMR CNRS)

2011-05-01T23:59:59.000Z

450

Shear Viscosity to Entropy Density Ratio in Six Derivative Gravity  

E-Print Network [OSTI]

We calculate shear viscosity to entropy density ratio in presence of four derivative (with coefficient $\\alpha'$) and six derivative (with coefficient $\\alpha'^2$) terms in bulk action. In general, there can be three possible four derivative terms and ten possible six derivative terms in the Lagrangian. Among them two four derivative and eight six derivative terms are ambiguous, i.e., these terms can be removed from the action by suitable field redefinitions. Rest are unambiguous. According to the AdS/CFT correspondence all the unambiguous coefficients (coefficients of unambiguous terms) can be fixed in terms of field theory parameters. Therefore, any measurable quantities of boundary theory, for example shear viscosity to entropy density ratio, when calculated holographically can be expressed in terms of unambiguous coefficients in the bulk theory (or equivalently in terms of boundary parameters). We calculate $\\eta/s$ for generic six derivative gravity and find that apparently it depends on few ambiguous coefficients at order $\\alpha'^2$. We calculate six derivative corrections to central charges $a$ and $c$ and express $\\eta/s$ in terms of these central charges and unambiguous coefficients in the bulk theory.

Nabamita Banerjee; Suvankar Dutta

2009-03-23T23:59:59.000Z

451

Biodiesel Produced by Ethanolysis: Melting Profile, Densities, and Viscosities  

Science Journals Connector (OSTI)

Although biorenewable and sustainable ethanol is appealing and the fatty acid profiles of crambe, fodder radish, coconut, and macauba oils are proper for biodiesel production, there is little data regarding the physical properties of biodiesels produced by ethanolysis from these promising raw materials. ... Therefore, the objectives of the present work were to present the experimental densities and viscosities for biodiesels produced by ethanolysis from crambe oil (BPECr), fodder radish oil (BPEFR), coconut oil (BPEC), and macauba pulp oil (BPEMP) at temperatures up to 363.2 K, to compare the experimental data with calculated viscosities from the models proposed by Ceriani et al.(13) and Basso et al.(11) as well as with the densities calculated using the GCVOL model(14) and a systematized predictive methodology(11) based on the method proposed by Halvorsen et al.,(15) to determine, using differential scanning calorimetry, the melting profile of these four promising biofuels, and to correlate the three studied physical properties to the ethyl ester composition of each biodiesel. ... All biodiesels have low contents of polyunsaturated ethyl esters, a favorable characteristic for biodiesel because the oxidative stability decreases with increase of the unsaturation level. ...

Rodrigo C. Basso; Antnio J. A. Meirelles; Eduardo A. C. Batista

2013-09-03T23:59:59.000Z

452

Photoinduced aging and viscosity evolution in Se-rich Ge-Se glasses  

SciTech Connect (OSTI)

We propose here to investigate the non-equilibrium viscosity of Ge-Se glasses under and after light irradiation. Ge{sub 10}Se{sub 90} and Ge{sub 20}Se{sub 80} fibers have been aged in the dark and under ambient light, over months. During aging, both the relaxation of enthalpy and the viscosity have been investigated. The viscosity was measured by shear relaxation-recovery tests allowing the measurement of non-equilibrium viscosity. When Ge{sub 10}Se{sub 90} glass fibers are aged under irradiation, a relatively fast fictive temperature decrease is observed. Concomitantly, during aging under irradiation, the non-equilibrium viscosity increases and reaches an equilibrium after two months of aging. This viscosity increase is also observed in Ge{sub 20}Se{sub 80} fibers. Nevertheless, this equilibrium viscosity is far below the viscosity expected at the configurational equilibrium. As soon as the irradiation ceases, the viscosity increases almost instantaneously by about one order of magnitude. Then, if the fibers are kept in the dark, their viscosity slowly increases over months. The analysis of the shear relaxation functions shows that the aging is thermorheologically simple. On the other side, there is no simple relaxation between the shear relaxation functions measured under irradiation and those measured in the dark. These results clearly suggest that a very specific photoinduced aging process occurs under irradiation. This aging is due to photorelaxation. Nevertheless, the viscosity changes are not solely correlated to photoaging and photorelaxation. A scenario is proposed to explain all the observed viscosity evolutions under and after irradiation, on the basis of photoinduced transient defects.

Gueguen, Yann; Sangleboeuf, Jean-Christophe; Rouxel, Tanguy [LARMAUR ERL CNRS 6274, Universit de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France)] [LARMAUR ERL CNRS 6274, Universit de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France); King, Ellyn A.; Lucas, Pierre [Department of Materials Science and Engineering, University of Arizona, 4715 E. Fort Lowell Road, Tucson, Arizona 85712 (United States)] [Department of Materials Science and Engineering, University of Arizona, 4715 E. Fort Lowell Road, Tucson, Arizona 85712 (United States); Keryvin, Vincent [LIMATB EA 4250, Universit de Bretagne Sud, Rue de Saint Maud, 56321 Lorient Cedex (France)] [LIMATB EA 4250, Universit de Bretagne Sud, Rue de Saint Maud, 56321 Lorient Cedex (France); Bureau, Bruno [Equipe Verres et Cramiques, UMR-CNRS 6226 Sciences Chimiques de Rennes, Universit de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France)] [Equipe Verres et Cramiques, UMR-CNRS 6226 Sciences Chimiques de Rennes, Universit de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France)

2013-08-21T23:59:59.000Z

453

The Navy seeks to identify responsible sources and obtain information in regard to purchasing renewable power for Naval Air Station (NAS) Fallon, located in Fallon, NV  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

REQUEST FOR INFORMATION (RFI) for Renewable Generation REQUEST FOR INFORMATION (RFI) for Renewable Generation Opportunities at NAWS China Lake, NAS Fallon, MCAGCC 29 Palms, and MCAS Yuma The Department of Navy (DoN) intends to issue a Request for Proposal (RFP) in early 2009 for renewable energy generation opportunities at Naval Air Weapons Station (NAWS) China Lake, California; Naval Air Station (NAS) Fallon, Nevada; Marine Corps Air Ground Combat Center (MCAGCC) Twentynine Palms, California, and Marine Corps Air Station (MCAS) Yuma, Arizona. The DoN will consider opportunities for the purchase of renewable power, developer wholesale generation, distributed generation, and the combination of those opportunities. Specifically, the Navy will provide Government land on these installations for large

454

of Colorado's Special Issue  

E-Print Network [OSTI]

Report on the Health of Colorado's Forests Special Issue 2005 Aspen Forests #12;2005 Report on the Health of Colorado's Forests February 2006 The 2005 Report on the Health of Colorado's Forests highlights Colorado's central mountains. Both sections of the Report underscore the need to address forest management

455

Special Report to Congress  

E-Print Network [OSTI]

an Integrated Waste Management Plan . . . . . . 9 Interim Spent Fuel Storage that attempting to meet unrealistic long-term deadlines may force the DOE to make important technical decisionsNWTRB Special Report to Congress and the Secretary of Energy Nuclear Waste Technical Review Board

456

Bulk viscosity of strange matter and r-modes in neutron stars  

E-Print Network [OSTI]

We discuss bulk viscosity due to non-leptonic processes involving hyperons and Bose-Einstein condensate of negatively charged kaons in neutron stars. It is noted that the hyperon bulk viscosity coefficient is a few order of magnitude larger than that of the case with the condensate. Further it is found that the hyperon bulk viscosity is suppressed in a superconducting phase. The hyperon bulk viscosity efficiently damps the r-mode instability in neutron stars irrespective of whether a superconducting phase is present or not in neutron star interior.

Debarati Chatterjee; Debades Bandyopadhyay

2008-12-30T23:59:59.000Z

457

Viscosity calculated in simulations of strongly coupled dusty plasmas with gas friction  

SciTech Connect (OSTI)

A two-dimensional strongly coupled dusty plasma is modeled using Langevin and frictionless molecular dynamical simulations. The static viscosity {eta} and the wave-number-dependent viscosity {eta}(k) are calculated from the microscopic shear in the random motion of particles. A recently developed method of calculating the wave-number-dependent viscosity {eta}(k) is validated by comparing the results of {eta}(k) from the two simulations. It is also verified that the Green-Kubo relation can still yield an accurate measure of the static viscosity {eta} in the presence of a modest level of friction as in dusty plasma experiments.

Feng Yan; Goree, J.; Liu Bin [Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242 (United States)

2011-05-15T23:59:59.000Z

458

Correlated changes in structure and viscosity during gelatinization and gelation of tapioca starch granules  

Science Journals Connector (OSTI)

Melting of the semicrystalline structure of native tapioca starch granules is correlated to solution viscosity for elucidating gelatinization and gelation processes.

Huang, H.-K.

2014-10-21T23:59:59.000Z

459

E-Print Network 3.0 - assess viscosity reduction Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

final spread as well as the stopping time... time with viscosity. Key words: self compacting concrete, rheology, slump flow, yield stress Source: Georgiou, Georgios - Department...

460

Looking beyond special relativity  

E-Print Network [OSTI]

Einstein's Special Theory of Relativity was proposed a little over a hundred years back. It remained a bedrock of twentieth century physics right up to Quantum Field Theory. However, the failure over several decades to provide a unified description of Electromagnetism and Gravitation or alternatively, Quantum Theory and General Relativity has finally lead researchers to abandon the differentiable spacetime manifold on which all of the above was based. In the most recent approaches we consider a spacetime that is discretized or is noncommutative. This immediately leads to corrections to the Special Theory of Relativity, more specifically to Lorentz Symmetry. It is quite significant that there are observational indicators, particularly in ultra high energy cosmic rays which suggest that such corrections are indeed there. We examine the whole issue in this paper.

B. G. Sidharth

2006-03-23T23:59:59.000Z

Note: This page contains sample records for the topic "viscosity navy special" 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.


461

QCD Viscosity to Entropy Density Ratio in the Hadronic Phase  

E-Print Network [OSTI]

Shear viscosity (eta) of QCD in the hadronic phase is computed by the coupled Boltzmann equations of pions and nucleons in low temperatures and low baryon number densities. The eta to entropy density ratio eta/s maps out the nuclear gas-liquid phase transition by forming a valley tracing the phase transition line in the temperature-chemical potential plane. When the phase transition turns into a crossover, the eta/s valley gradually disappears. We suspect the general feature for a first-order phase transition is that eta/s has a discontinuity in the bottom of the eta/s valley. The discontinuity coincides with the phase transition line and ends at the critical point. Beyond the critical point, a smooth eta/s valley is seen. However, the valley could disappear further away from the critical point. The eta/s measurements might provide an alternative to identify the critical points.

Jiunn-Wei Chen; Yen-Han Li; Yen-Fu Liu; Eiji Nakano

2007-03-21T23:59:59.000Z

462

Viscosity of the QGP from a virial expansion  

SciTech Connect (OSTI)

In this work we calculate the shear viscosity {eta} in the quark-gluon plasma within a virial expansion approach with particular interest in the ratio of {eta} to the entropy density s, i.e. {eta}/s. We derive a realistic equation of state using a virial expansion approach which allows us to include the interactions between the partons in the deconfined phase. From the interaction we directly extract the effective coupling {alpha}{sub V} for the determination of {eta}. Our results for {eta}/s show a minimum near to T{sub c} very close with the lowest bound and, furthermore, in line with the experimental point from RHIC as well as with the lattice calculations.

Mattiello, S., E-mail: stefano.mattiello@theo.physik.uni-giessen.de [University of Giessen, Institute for Theoretical Physics (Germany)

2012-06-15T23:59:59.000Z

463

Asymmetric tearing mode in the presence of viscosity  

SciTech Connect (OSTI)

The linear stability of the tearing mode (TM) in a plasma column is investigated in the presence of viscosity and finite equilibrium current density gradients (i.e., asymmetries). It is shown that for low {beta}, both effects are essential in order to properly describe the mode behaviour close to marginality. In particular, the theory introduces a critical threshold for the destabilization, such that the perturbation grows only if {Delta}'>{Delta}'{sub cr}. The value of {Delta}'{sub cr} depends on the equilibrium configuration and on the plasma parameters. Most importantly, {Delta}'{sub cr} can take negative values, thus allowing unstable tearing modes for {Delta}' < 0 (even in the absence of bootstrap current).

Militello, F. [EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Borgogno, D. [Dipartimento di Energetica, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino (Italy); Grasso, D. [CNR Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Dipartimento di Energetica, Politecnico di Torino, 10129 Torino (Italy); Marchetto, C. [Associazione EURATOM-ENEA sulla Fusione, IFP-CNR, Via R. Cozzi 53, 20125 Milano (Italy); Ottaviani, M. [Association EURATOM-CEA, CEA/DSM/IRFM, CEA Cadarache, 13108 St. Paul-lez-Durance (France)

2011-11-15T23:59:59.000Z

464

Freeze-out by bulk viscosity driven instabilities  

E-Print Network [OSTI]

We describe a new scenario (first introduced in [G. Torrieri, B. Tom\\'a\\v{s}ik and I. Mishustin, Phys. Rev. C \\textbf{77}, 034903 (2008)]) for freezeout in heavy ion collisions that could solve the lingering problems associated with the so-called HBT puzzle. We argue that bulk viscosity increases as $T$ approaches $T_c$. The fluid {then} becomes unstable against small perturbations, and fragments into clusters of a size much smaller than the total size of the system. These clusters maintain the pre-existing outward-going flow, as a spray of droplets, but develop no flow of their own, and hadronize by evaporation. We show that this scenario can explain HBT data and suggest how it can be experimentally tested.

Torrieri, Giorgio; Mishustin, Igor

2008-01-01T23:59:59.000Z

465

ARRHENIUS MODEL FOR HIGH-TEMPERATURE GLASS VISCOSITY WITH A CONSTANT PRE-EXPONENTIAL FACTOR  

SciTech Connect (OSTI)

A simplified form of the Arrhenius equation, ln ? = A + B(x)/T, where ? is the viscosity, T the temperature, x the composition vector, and A and B the Arrhenius coefficients, was fitted to glass-viscosity data for the processing temperature range (the range at which the viscosity is within 1 to 103 Pa.s) while setting A = constant and treating B(x) as a linear function of mass fractions of major components. Fitting the Arrhenius equation to over 550 viscosity data of commercial glasses and approximately 1000 viscosity data of glasses for nuclear-waste glasses resulted in the A values of -11.35 and -11.48, respectively. The R2 value ranged from 0.92 to 0.99 for commercial glasses and was 0.98 for waste glasses. The Arrhenius models estimate viscosities for melts of commercial glasses containing 42 to 84 mass% SiO2 within the temperature range of 1100 to 1550C and viscosity range of 5 to 400 Pa.s and for waste glasses containing 32 to 60 mass% SiO2 within the temperature range of 850 to 1450C and viscosity range of 0.4 to 250 Pa.s.

Hrma, Pavel R.

2008-04-15T23:59:59.000Z

466

Shear viscosity from R-charged AdS black holes  

E-Print Network [OSTI]

We compute the shear viscosity in the supersymmetric Yang-Mills theory dual to the STU background. This is a thermal gauge theory with a chemical potential. The quotient of the shear viscosity over the entropy density exhibits no deviation from the well known result 1/4\\pi.

J. Mas

2006-01-20T23:59:59.000Z

467

Department of Mechanical Engineering Fall 2010 Viscosity Measurement of Troublesome Fluids  

E-Print Network [OSTI]

Fluids Overview Air Products completes many batches of a variety of different fluids every year takes Air Products 2-3 hours to obtain a viscosity measurement. The goal of this project is to design a process that will shorten the time it takes Air Products to obtain a viscosity measurement, without

Demirel, Melik C.

468

Role of viscosity in the accurate prediction of source-terms for high molecular weight substances  

E-Print Network [OSTI]

and pressure, and mixing effects. The viscosity prediction uses an improvement on current predictions by combining b-parameter and Modified Chung-Lee-starling (MCLS) viscosity predictions for the employed pseudo-mixtures. The source-term model used is SPILLS...

Shaikh, Irfan Yusuf

2012-06-07T23:59:59.000Z

469

Method of preparing a high solids content, low viscosity ceramic slurry  

DOE Patents [OSTI]

A method for producing a high solids content, low viscosity ceramic slurry composition comprises turbomilling a dispersion of a ceramic powder in a liquid to form a slurry having a viscosity less than 100 centipoise and a solids content equal to or greater than 48 volume percent.

Tiegs, T.N.; Wittmer, D.E.

1995-10-10T23:59:59.000Z

470

Method of preparing a high solids content, low viscosity ceramic slurry  

DOE Patents [OSTI]

A method for producing a high solids content, low viscosity ceramic slurry composition comprises turbomilling a dispersion of a ceramic powder in a liquid to form a slurry having a viscosity less than 100 centipoise and a solids content equal to or greater than 48 volume percent.

Tiegs, Terry N. (Lenoir City, TN); Wittmer, Dale E. (Carbondale, IL)

1995-01-01T23:59:59.000Z

471

Plateau Field Test of Diesel Engine Oils with Different Viscosity Grades  

Science Journals Connector (OSTI)

The degradation of SF/CD 0W/30, CD5W/30 and SF/CD 15W/40 general engine oils has been investigated by Plateau field test with STYER 91 trucks. The experimental results have shown that on the Plateau viscosity grade of the oil hardly impacts on its service ... Keywords: Plateau, field test, viscosity grade, oil, diesel engine

Su Bin; Shi Yonggang; Gong Haifeng; Xu Jinlong; Wei Wei; Mei Lin

2011-01-01T23:59:59.000Z

472

Effects of Thermal Exposure and Test Temperature on Structure Evolution and Hardness/Viscosity  

E-Print Network [OSTI]

Effects of Thermal Exposure and Test Temperature on Structure Evolution and Hardness/Viscosity the physical and mechanical properties (i.e., viscosity, flow, and fracture). In some cases, the thermal coating techniques (e.g., high velocity oxygen fuel (HVOF), plasma spray, cold spray, etc.) have been used

Rollins, Andrew M.

473

Optical fiber-based fluorescent viscosity sensor Mark A. Haidekker and Walter J. Akers  

E-Print Network [OSTI]

Optical fiber-based fluorescent viscosity sensor Mark A. Haidekker and Walter J. Akers Department bound to a fiber-optic tip without loss of viscosity sensi- tivity. The optical fiber itself may be used to molecular rotors in solution. An optical fiber-based fluorescent vis- cosity sensor may be used in real

Theodorakis, Emmanuel

474

Scaling Laws for Convection with Temperature-dependent Viscosity and Grain-damage  

E-Print Network [OSTI]

Numerical experiments of convection with grain-damage are used to develop scaling laws for convective heat flow, mantle velocity, and plate velocity across the stagnant lid and plate-tectonic regimes. Three main cases are presented in order of increasing complexity: a simple case wherein viscosity is only dependent on grainsize, a case where viscosity depends on temperature and grainsize, and finally a case where viscosity is temperature and grainsize sensitive, and the grain-growth (or healing) is also temperature sensitive. In all cases, convection with grain-damage scales differently than Newtonian convection due to the effects of grain-damage. For the fully realistic case, numerical results show stagnant lid convection, fully mobilized convection that resembles the temperature-independent viscosity case, and partially mobile or transitional convection, depending on damage to healing ratio, Rayleigh number, and the activation energies for viscosity and healing. Applying our scaling laws for the fully reali...

Foley, Bradford J

2014-01-01T23:59:59.000Z

475

Viscosity effects on waves in partially and fully ionized plasma in magnetic field  

E-Print Network [OSTI]

Viscosity is discussed in multicomponent partially and fully ionized plasma, and its effects on two very different waves (Alfven and Langmuir) in solar atmosphere. A full set of viscosity coefficients is presented which includes coefficients for electrons, protons and hydrogen atoms. These are applied to layers with mostly magnetized protons in solar chromosphere where the Alfven wave could in principle be expected. The viscosity coefficients are calculated and presented graphically for the altitudes between 700 and 2200 km, and required corresponding cross sections for various types of collisions are given in terms of altitude. It is shown that in chromosphere the viscosity plays no role for the Alfven wave, which is only strongly affected by ion friction with neutrals. In corona, assuming the magnetic field of a few Gauss, the Alfven wave is more affected by ion viscosity than by ion-electron friction only for wavelengths shorter that 1-30 km, dependent on parameters and assuming the perturbed magnetic fiel...

Vranjes, J

2014-01-01T23:59:59.000Z

476

Special Report: IG-0819  

Broader source: Energy.gov (indexed) [DOE]

Allegations of Conflict of Interest Allegations of Conflict of Interest Regarding Licensing of PROTECT by Argonne National Laboratory DOE/IG-0819 August 2009 Department of Energy Washington, DC 20585 August 5, 2009 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Report on "Allegations of Conflict of Interest Regarding Licensing of PROTECT by Argonne National Laboratory" SUMMARY In February 2009, the Office of Inspector General received a letter from Congressman Mark Steven Kirk of Illinois, which included constituent allegations that an exclusive technology licensing agreement by Argonne National Laboratory was tainted by inadequate competition, conflicts of interest, and other improprieties. The technology in

477

The Effect of Heavy Oil Viscosity Reduction by Solvent Dissolution on Natural Convection in the Boundary Layer of VAPEX  

Science Journals Connector (OSTI)

We have studied the effect of viscosity on natural convection in the boundary layer of the vapor extraction (VAPEX) process. VAPEX is a heavy oil recovery method that uses solvents to reduce oil viscosity, and...

Mohammad Javaheri; Jalal Abedi

2013-09-01T23:59:59.000Z

478

Modeling multiphase flow for high viscosity liquids: a study of vertical/inclined zero net liquid flow  

E-Print Network [OSTI]

for higher viscosities. The trend suggests that the flow distribution coefficient, C[], varies with fluid viscosity and inclination angle, therefore affecting the liquid holdup in the pipe. A new model is proposed to take into account these factors and its...

Rodriguez, Jose Ramon

2012-06-07T23:59:59.000Z

479

Accurate viscosity modeling of liquid metals based on friction theory and PC-SAFT equation of state  

Science Journals Connector (OSTI)

Values of the viscosities of liquid metals are important in the prediction of fluid flow in many metallurgical manufacturing processes. In this work the friction theory (f-theory...) for viscosity modeling is use...

M. H. Mousazadeh

2012-06-01T23:59:59.000Z

480

Viscosity and radial distribution function in PbxSe(1-x) melts for stoechiometric and peritectic compositions  

E-Print Network [OSTI]

L-529 Viscosity and radial distribution function in PbxSe(1-x) melts for stoechiometric by lead atoms sur- rounded by Se atoms are considered. Kinematic viscosity data are compared a molecular structure in the liquid state rather than a chain-structure [1]. Viscosity is very sensitive

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "viscosity navy special" 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.


481

Viscosity of an electro-rheological suspension with internal rotations. E. Lemaire, L.Lobry, N. Pannacci, F.Peters  

E-Print Network [OSTI]

1 Viscosity of an electro-rheological suspension with internal rotations. E. Lemaire, L.Lobry, N (Quincke rotation) which, in turn, leads to a drastic decrease of the apparent viscosity of the suspension. The purpose of the paper is to provide a relation between the apparent viscosity of the suspension and the E

Boyer, Edmond

482

Viscosity of the Aqueous Liquid/Vapor Interfacial Region: 2D Electrochemical Measurements with a Piperidine Nitroxy  

E-Print Network [OSTI]

Viscosity of the Aqueous Liquid/Vapor Interfacial Region: 2D Electrochemical Measurements, and that it is coupled to the interfacial water via hydrogen bonding with H2O. In view of this postulate, the viscosity into the dynamic characteristics of aqueous interfaces. Thus, parameters such as the viscosity of water

Majda, Marcin

483

Viscosity Dependence of the Rotational Reorientation of Rhodamine B in Mono-and Polyalcohols. Picosecond Transient Grating Experiments  

E-Print Network [OSTI]

Viscosity Dependence of the Rotational Reorientation of Rhodamine B in Mono- and Polyalcohols-Stokes-Einstein (DSE) theorywas shown to extend to much higher viscosities than previously reported. Detailed of radius R and hydrodynamic volume V rotating in a fluid continuum of macroscopic viscosity q and relates

Fayer, Michael D.

484

Effective shear viscosity and dynamics of suspensions of micro-swimmers at moderate concentrations  

SciTech Connect (OSTI)

Recently, there have been a number of experimental studies suggesting that a suspension of self-propelled bacteria (microswimmers in general) may have an effective viscosity significantly smaller than the viscosity of the ambient fluid. This is in sharp contrast with suspensions of hard passive inclusions, whose presence always increases the viscosity. Here we present a 2D model for a suspension of microswimmers in a fluid and analyze it analytically in the dilute regime (no swimmer-swimmer interactions) and numerically using a Mimetic Finite Difference discretization. Our analysis shows that in the dilute regime the effective shear viscosity is not affected by self-propulsion. But at the moderate concentrations (due to swimmer-swimmer interactions) the effective viscosity decreases linearly as a function of the propulsion strength of the swimmers. These findings prove that (i) a physically observable decrease of viscosity for a suspension of self-propelled bacteria can be explained purely by hydrodynamic interactions and (ii) self-propulsion and interaction of swimmers are both essential to the reduction of the effective shear viscosity. We performed a number of numerical experiments analyzing the dynamics of swimmers resulting from pairwise interactions. The numerical results agree with the physically observed phenomena (e.g., attraction of swimmer to swimmer and swimmer to the wall). This is viewed as an additional validation of the model and the numerical scheme.

Constantin, Lipnikov [Los Alamos National Laboratory; Gyrya, V [PENNSYLVANIA STATE UNIV.; Aronson, I [ANL; Berlyand, L [PENNSYLVANIA STATE UNIV.

2009-01-01T23:59:59.000Z

485

Effective shear viscosity and dynamics of suspensions of micro-swimmers from small to moderate concentrations.  

SciTech Connect (OSTI)

Recently, there has been a number of experimental studies convincingly demonstrating that a suspension of self-propelled bacteria (microswimmers in general) may have an effective viscosity significantly smaller than the viscosity of the ambient fluid. This is in sharp contrast with suspensions of hard passive inclusions, whose presence always increases the viscosity. Here we present a 2D model for a suspension of microswimmers in a fluid and analyze it analytically in the dilute regime (no swimmer-swimmer interactions) and numerically using a Mimetic Finite Difference discretization. Our analysis shows that in the dilute regime (in the absence of rotational diffusion) the effective shear viscosity is not affected by self-propulsion. But at the moderate concentrations (due to swimmer-swimmer interactions) the effective viscosity decreases linearly as a function of the propulsion strength of the swimmers. These findings prove that (i) a physically observable decrease of viscosity for a suspension of self-propelled microswimmers can be explained purely by hydrodynamic interactions and (ii) self-propulsion and interaction of swimmers are both essential to the reduction of the effective shear viscosity. We also performed a number of numerical experiments analyzing the dynamics of swimmers resulting from pairwise interactions. The numerical results agree with the physically observed phenomena (e.g., attraction of swimmer to swimmer and swimmer to the wall). This is viewed as an additional validation of the model and the numerical scheme.

Gyrya, V.; Lipnikov, K.; Aranson, I.; Berlyand, L. (Materials Science Division); (Pennsylvania State Univ.); (LANL)

2011-05-01T23:59:59.000Z

486

EXPERIMENTAL AND THEORETICAL DETERMINATION OF HEAVY OIL VISCOSITY UNDER RESERVOIR CONDITIONS  

SciTech Connect (OSTI)

The USA deposits of heavy oils and tar sands contain significant energy reserves. Thermal methods, particularly steam drive and steam soak, are used to recover heavy oils and bitumen. Thermal methods rely on several displacement mechanisms to recover oil, but the most important is the reduction of crude viscosity with increasing temperature. The main objective of this research is to propose a simple procedure to predict heavy oil viscosity at reservoir conditions as a function of easily determined physical properties. This procedure will avoid costly experimental testing and reduce uncertainty in designing thermal recovery processes. First, we reviewed critically the existing literature choosing the most promising models for viscosity determination. Then, we modified an existing viscosity correlation, based on the corresponding states principle in order to fit more than two thousand commercial viscosity data. We collected data for compositional and black oil samples (absence of compositional data). The data were screened for inconsistencies resulting from experimental error. A procedure based on the monotonic increase or decrease of key variables was implemented to carry out the screening process. The modified equation was used to calculate the viscosity of several oil samples where compositional data were available. Finally, a simple procedure was proposed to calculate black oil viscosity from common experimental information such as, boiling point, API gravity and molecular weight.

Dr. Jorge Gabitto; Maria Barrufet

2003-05-01T23:59:59.000Z

487

MAGNETOHYDRODYNAMIC SIMULATIONS OF THE FORMATION OF COLD FRONTS IN CLUSTERS OF GALAXIES: EFFECTS OF ANISOTROPIC VISCOSITY  

SciTech Connect (OSTI)

We carried out three-dimensional magnetohydrodynamic simulations to study the effects of plasma viscosity on the formation of sharp discontinuities of density and temperature distributions, cold fronts, in clusters of galaxies. By fixing the gravitational potential that confines the cool, dense plasma in a moving subcluster, we simulated its interaction with the hot, lower density plasma around the subcluster. At the initial state, the intracluster medium (ICM) is assumed to be threaded by uniform magnetic fields. The enhancement of plasma viscosity along the direction of magnetic fields is incorporated as anisotropic viscosity depending on the direction of magnetic fields. We found that the Kelvin-Helmholtz instability at the surface of the subcluster grows even in models with anisotropic viscosity, because its effects on the velocity shear across the magnetic field lines are suppressed. We also found that magnetic fields around the interface between the subcluster and ICM are amplified even in the presence of viscosity, while magnetic fields behind the subcluster are amplified up to {beta}{sup -1} {approx} 0.01 in models with viscosity, whereas they are amplified up to {beta}{sup -1} {approx} 0.1 in models without viscosity, where {beta} is the ratio of gas pressure to magnetic pressure.

Suzuki, Kentaro; Ogawa, Takayuki; Matsumoto, Yosuke; Matsumoto, Ryoji, E-mail: suzukikn@astro.s.chiba-u.ac.jp, E-mail: ogawa@astro.s.chiba-u.ac.jp, E-mail: ymatumot@astro.s.chiba-u.ac.jp, E-mail: matumoto@astro.s.chiba-u.ac.jp [Department of Physics, Graduate School of Science, Chiba University, Inage-ku, Chiba 263-8522 (Japan)

2013-05-10T23:59:59.000Z

488

Effect of Viscosity on the Microformability of Bulk Amorphous Alloy in Supercooled Liquid Region  

SciTech Connect (OSTI)

Previously published results have shown that viscosity greatly influences on the deformation behavior of the bulk amorphous alloy in supercooled liquid region during microforming process. And viscosity is proved to be a component of the evaluation index which indicating microformability. Based on the fluid flow theory and assumptions, bulk amorphous alloy can be regarded as the viscous materials with a certain viscosity. It is helpful to understand how the viscosity plays an important role in viscous materials with various viscosities by numerical simulation on the process. Analysis is carried out by linear state equation in FEM with other three materials, water, lubricant oil and polymer melt, whose viscosities are different obviously. The depths of the materials flow into the U-shaped groove during the microimprinting process are compared in this paper. The result shows that the deformation is quite different when surface tension effect is not considered in the case. With the lowest viscosity, water can reach the bottom of micro groove in a very short time. Lubricant oil and polymer melt slower than it. Moreover bulk amorphous alloys in supercooled liquid state just flow into the groove slightly. Among the alloys of different systems including Pd-, Mg- and Zr-based alloy, Pd-based alloy ranks largest in the depth. Mg-based alloy is the second. And Zr-based alloy is the third. Further more the rank order of the viscosities of the alloys is Pd-, Mg- and Zr-based. It agrees well with the results of calculation. Therefore viscosity plays an important role in the microforming of the bulk amorphous alloy in the supercooled liquid state.

Cheng Ming; Zhang Shihong; Wang Ruixue [Institute of Metal Research, Chinese Academy of Sciences Shenyang 110016, Liaoning Province (China)

2010-06-15T23:59:59.000Z

489

Special Report: IG-0385 | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

85 Special Report: IG-0385 February 1, 1996 Special Audit Report on the Department of Energy's Arms and Military-type Equipment Special Report: IG-0385 More Documents &...

490

SAFARI 2000 Special Issue  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

INTERNATIONAL JOURNAL OF REMOTE SENSING 26 (19) INTERNATIONAL JOURNAL OF REMOTE SENSING 26 (19) OCTOBER 10, 2005 Privette JL, Roy DP. Southern Africa as a remote sensing test bed: the SAFARI 2000 Special Issue overview. INTERNATIONAL JOURNAL OF REMOTE SENSING 26 (19): 4141-4158. Eckardt FD, Kuring N. SeaWiFS identifies dust sources in the Namib Desert. INTERNATIONAL JOURNAL OF REMOTE SENSING 26 (19): 4159-4167. Hao WM, Ward DE, Susott RA, et al. Comparison of aerosol optical thickness measurements by MODIS, AERONET sun photometers, and Forest Service handheld sun photometers in southern Africa during the SAFARI 2000 campaign. INTERNATIONAL JOURNAL OF REMOTE SENSING 26 (19): 4169-4183. Sa ACL, Pereira JMC, Silva JMN. Estimation of combustion completeness based on fire-induced spectral reflectance changes in a dambo grassland (Western Province, Zambia).

491

Shear viscosity of two-dimensional Yukawa systems in liquid state  

E-Print Network [OSTI]

The shear viscosity of a two-dimensional (2D) liquid was calculated using equilibrium molecular dynamics simulations with a Yukawa potential. The shear viscosity has a minimum, at a Coulomb coupling parameter of about 17, arising from the temperature dependence of the kinetic and potential contributions. Previous calculations of 2D viscosity were less extensive, and for a different potential. The stress autocorrelation function was found to decay rapidly, contrary to some earlier work. These results are useful for 2D condensed matter systems and are compared to a recent dusty plasma experiment.

Bin Liu; J. Goree

2005-01-31T23:59:59.000Z

492

Static and dynamic shear viscosity of a single-layer complex plasma  

SciTech Connect (OSTI)

The static and dynamic (complex) shear viscosity of a single-layer dusty plasma is measured by applying, respectively, a stationary and a periodically modulated shear stress, induced by the light pressure of manipulating laser beams. Under static conditions we observe a decrease of the viscosity with increasing shear rate, the so-called shear-thinning behavior. Under oscillating shear both the magnitude and the ratio of the dissipative and elastic contributions to the complex viscosity show strong frequency dependence, as the system changes from viscous to elastic in nature with increasing excitation frequency. Accompanying molecular dynamics simulations explain and support the experimental observations.

Hartmann, Peter [Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O.B. 49, H-1525 Budapest (Hungary); Center for Astrophysics, Space Physics and Engineering Research (CASPER), One Bear Place 97310, Baylor University, Waco, Texas 76798 (United States); Sandor, Mate Csaba; Kovacs, Aniko; Donko, Zoltan [Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O.B. 49, H-1525 Budapest (Hungary)

2011-07-15T23:59:59.000Z

493

Neutron scattering studies of crude oil viscosity reduction with electric field  

Science Journals Connector (OSTI)

Abstract The small angle neutron scattering experiment has confirmed the theoretical prediction that a strong electric field induces the suspended nano-particles inside crude oil to aggregate into short chains along the field direction. This aggregation breaks the symmetry, making the viscosity anisotropic: along the field direction, the viscosity is significantly reduced. The experiment enables us to determine the induced chain size and shape, verifies that the electric field works for all kinds of crude oils, paraffin-based, asphalt-based, and mix-based. The basic physics of such field induced viscosity reduction is applicable to all kinds of suspensions.

R. Tao; E. Du; H. Tang; X. Xu

2014-01-01T23:59:59.000Z

494

Influence of Shear Viscosity of Quark-Gluon Plasma on Elliptic Flow in Ultrarelativistic Heavy-Ion Collisions  

SciTech Connect (OSTI)

We investigate the influence of a temperature-dependent shear viscosity over entropy density ratio {eta}/s on the transverse momentum spectra and elliptic flow of hadrons in ultrarelativistic heavy-ion collisions. We find that the elliptic flow in {radical}(s{sub NN})=200 GeV Au+Au collisions at RHIC is dominated by the viscosity in the hadronic phase and in the phase transition region, but largely insensitive to the viscosity of the quark-gluon plasma (QGP). At the highest LHC energy, the elliptic flow becomes sensitive to the QGP viscosity and insensitive to the hadronic viscosity.

Niemi, H. [Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, D-60438 Frankfurt am Main (Germany); Denicol, G. S.; Huovinen, P. [Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet, Max-von-Laue-Strasse 1, D-60438 Frankfurt am Main (Germany); Molnar, E. [Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, D-60438 Frankfurt am Main (Germany); MTA-KFKI, Research Institute for Particle and Nuclear Physics, H-1525 Budapest, P.O. Box 49 (Hungary); Rischke, D. H. [Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, D-60438 Frankfurt am Main (Germany); Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet, Max-von-Laue-Strasse 1, D-60438 Frankfurt am Main (Germany)

2011-05-27T23:59:59.000Z

495

LFS Exhibit B Special Conditions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

B (Rev. 9, 12/13/12) Exhibit B Special Conditions B (Rev. 9, 12/13/12) Exhibit B Special Conditions Dated 5-20-13 Subcontract No. 241314 Page 1 of 11 EXHIBIT "B" SPECIAL CONDITIONS TABLE OF CONTENTS SC Title Page SC-2 AUTHORITY OF PERSONNEL (Apr 2012) ............................................................................... 2 SC-3A COMMENCEMENT, PROGRESS AND COMPLETION OF THE WORK (Jun 2009 - Deviation) ................................................................................................................................... 3 SC-10B INSURANCE REQUIREMENTS (Jan 2010) ............................................................................. 3 SC-11B INVOICING AND PAYMENT (Mar 2012) .................................................................................. 5

496

Medium effects and the shear viscosity of the dilute Fermi gas away from the conformal limit  

E-Print Network [OSTI]

We study the shear viscosity of a dilute Fermi gas as a function of the scattering length in the vicinity of the unitarity limit. The calculation is based on kinetic theory, which provides a systematic approach to transport properties in the limit in which the fugacity $z=n\\lambda^3/2$ is small. Here, $n$ is the density of the gas and $\\lambda$ is the thermal wave length of the fermions. At leading order in the fugacity expansion the shear viscosity is independent of density, and the minimum shear viscosity is achieved at unitarity. At the next order medium effects modify the scattering amplitude as well as the quasi-particle energy and velocity. We show that these effects shift the minimum of the shear viscosity to the Bose-Einstein condensation (BEC) side of the resonance, in agreement with the result of recent experiments.

Bluhm, Marcus

2014-01-01T23:59:59.000Z

497

Experimental Investigation of the Effective Foam Viscosity in Unsaturated Porous Media  

SciTech Connect (OSTI)

Foam has the potential to effectively carry and distribute either aqueous or gaseous amendments to the deep vadose zone for contaminant remediation. However, the transport of foam in porous media is complicated because flow characteristics such as the effective viscosity are affected not only by foam properties but also by the sediment properties and flow conditions. We determined the average effective foam viscosity via a series of laboratory experiments and found that the effective foam viscosity increased with the liquid fraction in foam, the injection rate, and sediment permeability. These impacts are quantified with an empirical expression, which is further demonstrated with data from literature. The results show that the liquid fraction in foam and sediment permeability are two primary factors affecting effective foam viscosity. These results suggest that, when foam is used in deep vadose zone remediation, foam flow will not suffer from gravitational drainage and can distribute amendments uniformly in heterogeneous sediments.

Zhang, Z. F.; Zhong, Lirong; White, Mark D.; Szecsody, James E.

2012-11-01T23:59:59.000Z

498

Viscosity, Shear Waves, and Atomic-Level Stress-Stress Correlations  

SciTech Connect (OSTI)

The Green-Kubo equation relates the macroscopic stress-stress correlation function to a liquid's viscosity. The concept of the atomic-level stresses allows the macroscopic stress-stress correlation function in the equation to be expressed in terms of the space-time correlations among the atomic-level stresses. Molecular dynamics studies show surprisingly long spatial extension of stress-stress correlations and also longitudinal and transverse waves propagating in liquids over ranges which could exceed the system size. The results reveal that the range of propagation of shear waves corresponds to the range of distances relevant for viscosity. Thus our results show that viscosity is a fundamentally nonlocal quantity. We also show that the periodic boundary conditions play a nontrivial role in molecular dynamics simulations, effectively masking the long-range nature of viscosity.

Levashov, Valentin A [ORNL; Morris, James R [ORNL; Egami, Takeshi [ORNL

2011-01-01T23:59:59.000Z

499

QGP viscosity at RHIC and the LHC - a 2012 status report  

E-Print Network [OSTI]

In this article, we briefly review the recent progress related to extracting the quark-gluon plasma (QGP) specific shear viscosity from the flow data measured at Relativistic Heavy-Ion Collider (RHIC) and the Large Hadron Collider (LHC).

Huichao Song

2012-10-21T23:59:59.000Z

500

Density, Speed of Sound, and Viscosity Measurements of Reference Materials for Biofuels  

Science Journals Connector (OSTI)

Measurements of density, speed of sound, and viscosity have been carried out on liquid certified reference materials for biofuels as a function of temperature at ambient pressure. The samples included anhydrous and hydrated bioethanol and two biodiesel ...

Arno Laesecke; Tara J. Fortin; Jolene D. Splett

2012-02-10T23:59:59.000Z