Powered by Deep Web Technologies
Note: This page contains sample records for the topic "analysis techniques fluid" 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

Evaluation of fluid-modeling techniques in the seismic analysis of LMFBR reactors  

Science Conference Proceedings (OSTI)

Fluid modeling is of great importance in the seismic analysis of the LMFBR primary system. If the fluid model used in the analysis is too simplified, the results could be very uncertain. On the other hand, if the model is too detailed, considerable difficulty might be encountered in the analysis. The objectives of this study are to examine the validity of the two commonly used fluid modeling techniques. i.e. simplified added mass method and lumped mass method and to provide some useful information on the treatment of fluid in seismic analysis. The validity of these two methods of analysis is examined by comparing the calculated seismic responses of a fluid-structure system based on these two methods with that calculated from a coupled fluid-structure interaction analysis in which the fluid is treated by continuum fluid elements.

Ma, D.C.; Gvildys, J.; Chang, Y.W.

1983-01-01T23:59:59.000Z

2

Chemical analysis and sampling techniques for geothermal fluids and gases at the Fenton Hill Laboratory  

DOE Green Energy (OSTI)

A general description of methods, techniques, and apparatus used for the sampling, chemical analysis, and data reporting of geothermal gases and fluids is given. Step-by-step descriptions of the procedures are included in the appendixes.

Trujillo, P.E.; Counce, D.; Grigsby, C.O.; Goff, F.; Shevenell, L.

1987-06-01T23:59:59.000Z

3

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 10 Lipid Separations Using Packed-Column Supercritical Fluid Chromatography  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 10 Lipid Separations Using Packed-Column Supercritical Fluid Chromatography Methods and Analyses eChapters Methods - Analyses Books AOCS Press Downloadabl

4

Isotopic Analysis- Fluid | Open Energy Information  

Open Energy Info (EERE)

Isotopic Analysis- Fluid Isotopic Analysis- Fluid Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Isotopic Analysis- Fluid Details Activities (61) Areas (32) Regions (6) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Water rock interaction Stratigraphic/Structural: Hydrological: Origin of hydrothermal fluids; Mixing of hydrothermal fluids Thermal: Isotopic ratios can be used to characterize and locate subsurface thermal anomalies. Dictionary.png Isotopic Analysis- Fluid: Isotopes are atoms of the same element that have different numbers of neutrons. An isotopic analysis looks at a particular isotopic element(s) in

5

Fluid Inclusion Analysis | Open Energy Information  

Open Energy Info (EERE)

Fluid Inclusion Analysis Fluid Inclusion Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Fluid Inclusion Analysis Details Activities (20) Areas (11) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Fluid composition at a point in time and space Thermal: The minimum temperature of fluid inclusion formation Cost Information Low-End Estimate (USD): 17.571,757 centUSD 0.0176 kUSD 1.757e-5 MUSD 1.757e-8 TUSD / sample Median Estimate (USD): 17.571,757 centUSD 0.0176 kUSD 1.757e-5 MUSD 1.757e-8 TUSD / sample High-End Estimate (USD): 26.782,678 centUSD

6

Fluid Lab Analysis | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Fluid Lab Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Fluid Lab Analysis Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Lab Analysis Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Results can aid in the determination of fluid source regions and circulation pathways, and assist in determining the degree of mixing between different hydrothermal fluids. Thermal: Certain elements exhibit high spatial correlation with high-temperature geothermal systems; Isotopic ratios can be used to characterize and locate subsurface thermal anomalies.

7

Definition: Fluid Lab Analysis | Open Energy Information  

Open Energy Info (EERE)

Fluid Lab Analysis Fluid Lab Analysis Jump to: navigation, search Dictionary.png Fluid Lab Analysis Fluid lab analysis encompasses a broad array of techniques used for the analysis of water and gas samples. These analyses are used in a variety of disciplines to quantify the chemical components and properties of groundwater systems. In geothermal exploration and development, fluid analyses often provide a first look into the characteristics of a hydrothermal system, and are routinely used in ongoing monitoring of geothermal reservoirs.[1] View on Wikipedia Wikipedia Definition Water chemistry analyses are carried out to identify and quantify the chemical components and properties of a certain water. This include pH, major cations and anions, trace elements and isotopes. Water chemistry

8

Category:Fluid Lab Analysis | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Fluid Lab Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Fluid Lab Analysis page? For detailed information on exploration techniques, click here. Category:Fluid Lab Analysis Add.png Add a new Fluid Lab Analysis Technique Pages in category "Fluid Lab Analysis" The following 5 pages are in this category, out of 5 total. C Compound and Elemental Analysis F Fluid Inclusion Analysis I Isotopic Analysis- Fluid M Mercury Vapor T Trace Element Analysis Retrieved from "http://en.openei.org/w/index.php?title=Category:Fluid_Lab_Analysis&oldid=689846"

9

Optical techniques for fluid flow and heat transfer  

Science Conference Proceedings (OSTI)

A review is presented of optical measuring techniques employed in momentum heat and mass transfer studies. A classification is given of those techniques that are nowadays widely employed in studies to advance the understanding of transport phenomena in fluids. Techniques that employ effects caused by fluid molecules are briefly treated, and examples of measurements are given to demonstrate the kind of information that can be obtained by these techniques. Optical techniques using tracers to obtain transport information are summarized, and laser-Doppler anemometry and its application to fluid flow studies are emphasized. Applications of this technique in single-phase and two-phase flows are given that demonstrate its potential in experimental fluid mechanics and convective heat transfer studies. 63 refs.

Durst, F. (Erlangen-Nuernberg Universitaet, Erlangen (Germany, F.R.))

1990-01-01T23:59:59.000Z

10

Fluid Inclusion Analysis At Valles Caldera Geothermal Region (1990) | Open  

Open Energy Info (EERE)

Geothermal Region (1990) Geothermal Region (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Valles Caldera Geothermal Region (1990) Exploration Activity Details Location Valles Caldera Geothermal Region Exploration Technique Fluid Inclusion Analysis Activity Date 1990 Usefulness not indicated DOE-funding Unknown Notes A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first 7 months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. References Mckibben, M. A. (25 April 1990) Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active

11

Fluid Inclusion Analysis At International Geothermal Area Mexico (Norman &  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Fluid Inclusion Analysis At International Geothermal Area Mexico (Norman & Moore, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At International Geothermal Area Mexico (Norman & Moore, 2004) Exploration Activity Details Location International Geothermal Area Mexico Exploration Technique Fluid Inclusion Analysis Activity Date Usefulness useful DOE-funding Unknown Notes Our examination of Cerro Prieto gas analyses indicates that the geothermal system structure is changing with time. Gas data routinely measured in most geothermal fields; hence fluid-flow plots as presented here can be accomplished with little cost. Gas analytical data, therefore, are useful

12

Fluid Inclusion Analysis At Coso Geothermal Area (1990) | Open Energy  

Open Energy Info (EERE)

0) 0) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (1990) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 1990 Usefulness not indicated DOE-funding Unknown Notes A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first seven months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. References Mckibben, M. A. (25 April 1990) Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems

13

Fluid Inclusion Analysis At Geysers Geothermal Area (1990) | Open Energy  

Open Energy Info (EERE)

Fluid Inclusion Analysis At Geysers Geothermal Area (1990) Fluid Inclusion Analysis At Geysers Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Geysers Geothermal Area (1990) Exploration Activity Details Location Geysers Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 1990 Usefulness not indicated DOE-funding Unknown Notes A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first 7 months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. References Mckibben, M. A. (25 April 1990) Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active

14

Fluid Inclusion Analysis At Coso Geothermal Area (1996) | Open Energy  

Open Energy Info (EERE)

) ) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (1996) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 1996 Usefulness not indicated DOE-funding Unknown Notes Fluid inclusion homogenization temperatures and salinities demonstrate that cool, low salinity ground waters were present when the thermal plume was emplaced. Dilution of the thermal waters occurred above and below the plume producing strong gradients in their compositions. Comparison of mineral and fluid inclusion based temperatures demonstrates that cooling has occurred along the margins of the thermal system but that the interior of the system

15

Fluid Inclusion Analysis At Coso Geothermal Area (2004) | Open Energy  

Open Energy Info (EERE)

Fluid Inclusion Analysis At Coso Geothermal Area Fluid Inclusion Analysis At Coso Geothermal Area (2004) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2004 Usefulness not indicated DOE-funding Unknown Exploration Basis 1) To determine if analyses of fluid propene and propane species in fluid inclusions can be used to interpret fluid type, history, or process. 2) To evaluate the geology and thermal history of the East Flank, in order to better understand how the rocks will behave during hydro-fracturing. Notes 1) Analyses were performed on drill cuttings at 20ft intervals from four Coso geothermal wells. Two wells are good producers, one has cold-water entrants in the production zone, and the fourth is a non-producer. The ratios show distinct differences between producing and the non-producing

16

Isotopic Analysis- Fluid At Coso Geothermal Area (2007) | Open Energy  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Coso Geothermal Area (2007) Isotopic Analysis- Fluid At Coso Geothermal Area (2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Coso Geothermal Area (2007) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 2007 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine the location of the heat source Notes Fluids have been sampled from 9 wells and 2 fumaroles from the East Flank of the Coso hydrothermal system with a view to identifying, if possible, the location and characteristics of the heat source inflows into this portion of the geothermal field. Preliminary results show that there has been extensive vapor loss in the system, most probably in response to

17

Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (White,  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (White, Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (White, Et Al., 1992) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (White, Et Al., 1992) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown Notes Used various geochemical techniques to obtain data from which information regarding mass transfer rates. This then led to conclucions of the history/evolution of the geothermal system. Unclear whether useful for exploration purposes. References Art F. White, Nancy J. Chuma, Fraser Goff (1992) Mass Transfer Constraints On The Chemical Evolution Of An Active Hydrothermal System,

18

Isotopic Analysis- Fluid At Coso Geothermal Area (1990) | Open Energy  

Open Energy Info (EERE)

Analysis- Fluid At Coso Geothermal Area (1990) Analysis- Fluid At Coso Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Coso Geothermal Area (1990) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1990 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine the recharge of the area Notes Hydrogen and oxygen isotope data on waters of Coso thermal and nonthermal waters were studied. Hydrogen and oxygen isotopes do not uniquely define the recharge area for the Coso geothermal system but strongly suggest Sierran recharge with perhaps some local recharge. References Whelan, J. A. (1 September 1990) Water geochemistry study of Indian Wells Valley, Inyo and Kern Counties, California. Supplement.

19

Isotopic Analysis-Fluid At Yellowstone Caldera Geothermal Region (1977) |  

Open Energy Info (EERE)

Isotopic Analysis-Fluid At Yellowstone Caldera Geothermal Region (1977) Isotopic Analysis-Fluid At Yellowstone Caldera Geothermal Region (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Yellowstone Caldera Geothermal Region (1977) Exploration Activity Details Location Yellowstone Caldera Geothermal Region Exploration Technique Isotopic Analysis-Fluid Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis Estimate deep reservoir temperature Notes The oxygen isotope compositions of dissolved sulfate and water from hot springs and shallow drillholes have been tested. Methods are described to calculate the effects of boiling and dilution. The geothermometer, is applied to thermal systems of Yellowstone Park, Wyoming, Long Valley, California, and Raft River, Idaho to estimate deep reservoir temperatures

20

Isotopic Analysis- Fluid At Sierra Valley Geothermal Area (1990) | Open  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Sierra Valley Geothermal Area (1990) Isotopic Analysis- Fluid At Sierra Valley Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Sierra Valley Geothermal Area (1990) Exploration Activity Details Location Sierra Valley Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1990 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine the recharge of the area Notes Hydrogen and oxygen isotope data on waters of Coso thermal and nonthermal waters were studied. Hydrogen and oxygen isotopes do not uniquely define the recharge area for the Coso geothermal system but strongly suggest Sierran recharge with perhaps some local recharge. References Whelan, J. A. (1 September 1990) Water geochemistry study of

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Isotopic Analysis- Fluid At Coso Geothermal Area (1982) | Open Energy  

Open Energy Info (EERE)

Analysis- Fluid At Coso Geothermal Area (1982) Analysis- Fluid At Coso Geothermal Area (1982) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Coso Geothermal Area (1982) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1982 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine recharge for the system Notes Thirty-nine water samples were collected from the Coso geothermal system and vicinity and were analyzed for major chemical constituents and deltaD and delta18O. Non-thermal ground waters from the Coso Range were found to be isotopically heavier than non-thermal ground waters from the Sierra Nevada to the west. The deltaD value for the deep thermal water at Coso is

22

Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal Area  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal Area Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal Area (1990) Exploration Activity Details Location Indian Valley Hot Springs Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1990 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine the recharge of the area Notes Hydrogen and oxygen isotope data on waters of Coso thermal and nonthermal waters were studied. Hydrogen and oxygen isotopes do not uniquely define the recharge area for the Coso geothermal system but strongly suggest Sierran recharge with perhaps some local recharge. References

23

Isotopic Analysis- Fluid At Rose Valley Geothermal Area (1990) | Open  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Rose Valley Geothermal Area (1990) Isotopic Analysis- Fluid At Rose Valley Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Rose Valley Geothermal Area (1990) Exploration Activity Details Location Rose Valley Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1990 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine the recharge of the area Notes Hydrogen and oxygen isotope data on waters of Coso thermal and nonthermal waters were studied. Hydrogen and oxygen isotopes do not uniquely define the recharge area for the Coso geothermal system but strongly suggest Sierran recharge with perhaps some local recharge. References Whelan, J. A. (1 September 1990) Water geochemistry study of

24

Definition: Lab Analysis Techniques | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Lab Analysis Techniques Jump to: navigation, search Dictionary.png Lab Analysis Techniques Lab Analysis Techniques encompass a broad array of analytical methods that can be used to characterize the chemical and physical properties of rock and fluid samples. The reliability of laboratory analyses depends strongly on both adherence to standard sampling procedures in the field when collecting materials for examination and on the application of appropriate sample preparation techniques in the lab. Ret Like Like You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Lab_Analysis_Techniques&oldid=688298" Category:

25

Definition: Isotopic Analysis- Fluid | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Isotopic Analysis- Fluid Jump to: navigation, search Dictionary.png Isotopic Analysis- Fluid Isotopes are atoms of the same element that have different numbers of neutrons. An isotopic analysis looks at a particular isotopic element(s) in a given system, while the conditions which increase/decrease the number of neutrons are well understood and measurable. Fluid isotopes are used to characterize a fluids origin, age, and/or interaction with rocks or other fluids based on unique isotopic ratios or concentrations.[1] View on Wikipedia Wikipedia Definition Isotope geochemistry is an aspect of geology based upon study of the relative and absolute concentrations of the elements and their isotopes in

26

Fluid Inclusion Analysis At Coso Geothermal Area (2004-2005) | Open Energy  

Open Energy Info (EERE)

Fluid Inclusion Analysis At Coso Geothermal Area (2004-2005) Fluid Inclusion Analysis At Coso Geothermal Area (2004-2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (2004-2005) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2004 - 2005 Usefulness useful DOE-funding Unknown Exploration Basis Determine if fluid inclusion stratigraphy is applicable to geothermal Notes Fluid Inclusion Stratigraphy (FIS) is a new technique developed for the oil industry in order to map borehole fluids.Fluid inclusion gas geochemistry is analyzed and plotted on well log diagrams. The working hypothesis is that select gaseous species and species ratios indicate areas of groundwater and reservoir fluid flow and reservoir seals. Analyses from

27

Fluid Inclusion Analysis At Coso Geothermal Area (1999) | Open Energy  

Open Energy Info (EERE)

Fluid Inclusion Analysis At Coso Geothermal Area Fluid Inclusion Analysis At Coso Geothermal Area (1999) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 1999 Usefulness not indicated DOE-funding Unknown Exploration Basis Well and steam sample comparison Notes Vein and alteration assemblages from eight Coso wells have been collected and their fluid-inclusion gases analyzed by quadrupole mass spectrometry. Four major types of alteration were sampled: 1) young calcite-hematite-pyrite veins; 2) wairakite or epidote veins and alteration that are spatially associated with deep reservoirs in the main field and eastern wells; 3) older sericite and pyrite wallrock alteration; and 4) stilbite-calcite veins that are common in cooler or marginal portions of

28

Isotopic Analysis Fluid At Coso Geothermal Area (1997) | Open Energy  

Open Energy Info (EERE)

Fluid At Coso Geothermal Area (1997) Fluid At Coso Geothermal Area (1997) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Coso Geothermal Area (1997) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1997 Usefulness not indicated DOE-funding Unknown Exploration Basis Identify the source of chlorine Notes The 36Cl/Cl values for several geothermal water samples and reservoir host rock samples have been measured. The results suggest that the thermal waters could be connate waters derived from sedimentary formations, presumably underlying and adjacent top the granitic rocks, which have recently migrated into the host rocks. Alternatively, most of the chlorine but not the water, may have recently input into the system from magmatic

29

Apparatus And Method For Fluid Analysis  

DOE Patents (OSTI)

The present invention is an apparatus and method for analyzing a fluid used in a machine or in an industrial process line. The apparatus has at least one meter placed proximate the machine or process line and in contact with the machine or process fluid for measuring at least one parameter related to the fluid. The at least one parameter is a standard laboratory analysis parameter. The at least one meter includes but is not limited to viscometer, element meter, optical meter, particulate meter, and combinations thereof.

Wilson, Bary W. (Richland, WA); Peters, Timothy J. (Richland, WA); Shepard, Chester L. (West Richland, WA); Reeves, James H. (Richland, WA)

2003-05-13T23:59:59.000Z

30

Fluid Inclusion Analysis At Coso Geothermal Area (2002) | Open Energy  

Open Energy Info (EERE)

) ) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (2002) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2002 Usefulness useful DOE-funding Unknown Notes Analyses were averaged and plotted verses depth (Figure 4). Fluid inclusion gas analyses done on vein minerals from drill hole 68-6 that we earlier analyzed (Adams 2000) were plotted for comparison in order to confirm that similar analyses are obtained from chips and vein minerals. This comparison is far from ideal. The drill holes are better than a kilometer apart, samples analyzed in the two bore holes are not from the same depths, and the chip analyses were performed on the new dual quadrupole system that

31

Fluid Inclusion Analysis At Coso Geothermal Area (2003) | Open Energy  

Open Energy Info (EERE)

Coso Geothermal Area Coso Geothermal Area (2003) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2003 Usefulness not indicated DOE-funding Unknown Exploration Basis 1) Fracture/stress analysis. 2)To determine the driver of the relationship between hydrogen and organic species. Notes 1) Fluid inclusion analyses of cuttings from well 83-16 were used to determine the temperatures of vein mineralization. 2) Measurement of organic compounds in fluid inclusions shows that there are strong relationships between H2 concentrations and alkane/alkene ratios and benzene concentrations. Inclusion analyses that indicate H2 concentrations > 0.001 mol % typically have ethane > ethylene, propane > propylene, and

32

Tools & Techniques for Failure Analysis  

Science Conference Proceedings (OSTI)

Oct 31, 2013 ... Failure Analysis and Prevention: Tools & Techniques for Failure ... As lithium-ion battery technology continues to advance and is adopted in diverse markets, ... fracture origin and an understanding of the fracture event energy.

33

In-Line Fluid Analysis Technology - Available Technologies ...  

Computers & Electronics; Manufacturing & Warehousing; Oil & Gas; Brochure(s) In-Line Fluid Analysis Brochure (pdf) Enabled by the Office ...

34

Fluid Inclusion Analysis At Salton Sea Geothermal Area (1990) | Open Energy  

Open Energy Info (EERE)

90) 90) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Salton Sea Geothermal Area (1990) Exploration Activity Details Location Salton Sea Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 1990 Usefulness not indicated DOE-funding Unknown Notes A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first 7 months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. References Mckibben, M. A. (25 April 1990) Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems

35

Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Rao, Et  

Open Energy Info (EERE)

Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Rao, Et Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Rao, Et Al., 1996) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Rao, Et Al., 1996) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown References U. Fehn, R. T. D. Teng, Usha Rao, Fraser E. Goff (1996) Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis-_Fluid_At_Valles_Caldera_-_Sulphur_Springs_Area_(Rao,_Et_Al.,_1996)&oldid=692543" Category: Exploration

36

Fluid Inclusion Analysis At Raft River Geothermal Area (2011) | Open Energy  

Open Energy Info (EERE)

Fluid Inclusion Analysis At Raft River Geothermal Area (2011) Fluid Inclusion Analysis At Raft River Geothermal Area (2011) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Raft River Geothermal Area (2011) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2011 Usefulness not indicated DOE-funding Unknown Notes Hydrogen isotope values of muscovite (δDMs ∼-100‰) and fluid inclusions in quartz (δDFluid ∼-85‰) indicate the presence of meteoric fluids during detachment dynamics. Recrystallized grain-shape fabrics and quartz c-axis fabric patterns reveal a large component of coaxial strain (pure shear), consistent with thinning of the detachment section. Therefore, the high thermal gradient preserved in the Raft River

37

Imaging techniques applied to the study of fluids in porous media  

Science Conference Proceedings (OSTI)

Improved imaging techniques were used to study the dynamics of fluid flow and trapping at various scales in porous media. Two-phase and three-phase floods were performed and monitored by computed tomography (CT) scanning and/or nuclear magnetic resonance imaging (NMRI) microscopy. Permeability-porosity correlations obtained from image analysis were combined with porosity distributions from CT scanning to generate spatial permeability distributions within the core which were used in simulations of two-phase floods. Simulation-derived saturation distributions of two-phase processes showed very good agreement with the CT measured values.

Tomutsa, L.; Doughty, D.; Brinkmeyer, A.; Mahmood, S.

1992-06-01T23:59:59.000Z

38

Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff, Et Al.,  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff, Et Al., Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff, Et Al., 1981) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff, Et Al., 1981) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown References Fraser E. Goff, Charles O. Grigsby, Pat E. Trujillo Jr, Dale Counce, Andrea Kron (1981) Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs Area, Canon De San Diego, New Mexico Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis-_Fluid_At_Fenton_Hill_Hdr_Geothermal_Area_(Goff,_Et_Al.,_1981)&oldid=692519

39

Isotopic Analysis- Fluid At Long Valley Caldera Area (Goff & Janik, 2002) |  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Long Valley Caldera Area (Goff & Janik, 2002) Isotopic Analysis- Fluid At Long Valley Caldera Area (Goff & Janik, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Long Valley Caldera Area (Goff & Janik, 2002) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells. At shallow depths in the caldera References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles Caldera Region, New Mexico And Comparisons With Gases At Yellowstone, Long Valley And Other Geothermal Systems Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis-_Fluid_At_Long_Valley_Caldera_Area_(Goff_%26_Janik,_2002)&oldid=692525

40

Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Goff & Janik,  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Goff & Janik, Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Goff & Janik, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Goff & Janik, 2002) Exploration Activity Details Location Valles Caldera - Redondo Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells. References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles Caldera Region, New Mexico And Comparisons With Gases At Yellowstone, Long Valley And Other Geothermal Systems Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis-_Fluid_At_Valles_Caldera_-_Redondo_Area_(Goff_%26_Janik,_2002)&oldid=692533"

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Goff &  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Goff & Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Goff & Janik, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Area (Goff & Janik, 2002) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells. References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles Caldera Region, New Mexico And Comparisons With Gases At Yellowstone, Long Valley And Other Geothermal Systems Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis-_Fluid_At_Valles_Caldera_-_Sulphur_Springs_Area_(Goff_%26_Janik,_2002)&oldid=692539"

42

Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) |  

Open Energy Info (EERE)

Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2004 Usefulness useful DOE-funding Unknown Exploration Basis To determine effectiveness of FIS for geothermal exploration Notes In order to test FIS for geothermal exploration, drill chips were analyzed from Coso well 83-16, which were selected at 1000 ft intervals by Joseph Moore. Sequential crushes done by our CFS (crushfast-scan) method (Norman 1996) show that chips have a high density of homogeneous fluid inclusions.

43

Isotopic Analysis-Fluid At Steamboat Springs Geothermal Area (1982) | Open  

Open Energy Info (EERE)

Isotopic Analysis-Fluid At Steamboat Springs Geothermal Area (1982) Isotopic Analysis-Fluid At Steamboat Springs Geothermal Area (1982) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Steamboat Springs Geothermal Area (1982) Exploration Activity Details Location Steamboat Springs Geothermal Area Exploration Technique Isotopic Analysis-Fluid Activity Date 1982 Usefulness not indicated DOE-funding Unknown Notes Helium isotope ratios have been measured in geothermal fluids. These ratios have been interpreted in terms of the processes which supply He in distinct isotopic ratios (i.e. magmatic He, ~10 Ra; atmospheric He, Ra; and crustal He, ~0.1 Ra) and in terms of the processes which can alter the isotopic ratio (hydrologic mixing, U-Th series alpha production and weathering

44

Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (White, Et Al.,  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (White, Et Al., Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (White, Et Al., 1992) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (White, Et Al., 1992) Exploration Activity Details Location Valles Caldera - Redondo Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown Notes Used various geochemical techniques to obtain data from which information regarding mass transfer rates. This then led to conclucions of the history/evolution of the geothermal system. Unclear whether useful for exploration purposes. References Art F. White, Nancy J. Chuma, Fraser Goff (1992) Mass Transfer Constraints On The Chemical Evolution Of An Active Hydrothermal System,

45

Fluid Inclusion Analysis At International Geothermal Area Mexico...  

Open Energy Info (EERE)

icon Twitter icon Fluid Inclusion Analysis At International Geothermal Area Mexico (Norman & Moore, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home...

46

Definition: Fluid Inclusion Analysis | Open Energy Information  

Open Energy Info (EERE)

or liquid) and occasionally mineral crystals, that are considered to represent the chemical and physical properties of a hydrothermal fluid at a single point in time and...

47

Improved techniques for fluid diversion in oil recovery. Final report  

Science Conference Proceedings (OSTI)

This three-year project had two technical objectives. The first objective was to compare the effectiveness of gels in fluid diversion (water shutoff) with those of other types of processes. Several different types of fluid-diversion processes were compared, including those using gels, foams, emulsions, particulates, and microorganisms. The ultimate goals of these comparisons were to (1) establish which of these processes are most effective in a given application and (2) determine whether aspects of one process can be combined with those of other processes to improve performance. Analyses and experiments were performed to verify which materials are the most effective in entering and blocking high-permeability zones. The second objective of the project was to identify the mechanisms by which materials (particularly gels) selectively reduce permeability to water more than to oil. A capacity to reduce water permeability much more than oil or gas permeability is critical to the success of gel treatments in production wells if zones cannot be isolated during gel placement. Topics covered in this report include (1) determination of gel properties in fractures, (2) investigation of schemes to optimize gel placement in fractured systems, (3) an investigation of why some polymers and gels can reduce water permeability more than oil permeability, (4) consideration of whether microorganisms and particulates can exhibit placement properties that are superior to those of gels, and (5) examination of when foams may show placement properties that are superior to those of gels.

Seright, R.

1996-01-01T23:59:59.000Z

48

Topics and Techniques in Forensic DNA Analysis  

Science Conference Proceedings (OSTI)

... Topics and Techniques for Forensic DNA Analysis NYC OCME Dept of Forensic Biology ... NIST Human Identity Project Leader (1999-present) ...

2012-04-17T23:59:59.000Z

49

Isotopic Analysis- Fluid At Long Valley Caldera Area (Sorey, Et Al., 1991)  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Long Valley Caldera Area (Sorey, Et Al., 1991) Isotopic Analysis- Fluid At Long Valley Caldera Area (Sorey, Et Al., 1991) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Long Valley Caldera Area (Sorey, Et Al., 1991) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Useful for a whole variety of particular reservoir characterization goals, i.e.: "Isotopic values for the thermal waters become lighter with distance eastward from Casa Diablo, suggesting dilution with nonthermal ground waters from more easterly sources. In the Casa Diablo area, the effects of near-surface boiling cause the observed isotopic shift (along the line

50

Isotopic Analysis- Fluid At Long Valley Caldera Area (Goff, Et Al., 1991) |  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Fluid At Long Valley Caldera Area (Goff, Et Al., 1991) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Long Valley Caldera Area (Goff, Et Al., 1991) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown Notes At shallow depths in the caldera References Fraser Goff, Harold A. Wollenberg, D. C. Brookins, Ronald W. Kistler (1991) A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis-_Fluid_At_Long_Valley_Caldera_Area_(Goff,_Et_Al.,_1991)&oldid=692527"

51

Isotopic Analysis-Fluid At Raft River Geothermal Area (1977) | Open Energy  

Open Energy Info (EERE)

Isotopic Analysis-Fluid At Raft River Geothermal Area (1977) Isotopic Analysis-Fluid At Raft River Geothermal Area (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Raft River Geothermal Area (1977) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis Estimate deep reservoir temperature Notes The oxygen isotope compositions of dissolved sulfate and water from hot springs and shallow drillholes have been tested. Methods are described to calculate the effects of boiling and dilution. The geothermometer, is applied to thermal systems of Yellowstone Park, Wyoming, Long Valley, California, and Raft River, Idaho to estimate deep reservoir temperatures

52

Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) |  

Open Energy Info (EERE)

Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) (Redirected from Water-Gas Samples At Coso Geothermal Area (2004)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore, 2004) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2004 Usefulness useful DOE-funding Unknown Exploration Basis To determine effectiveness of FIS for geothermal exploration Notes In order to test FIS for geothermal exploration, drill chips were analyzed from Coso well 83-16, which were selected at 1000 ft intervals by Joseph Moore. Sequential crushes done by our CFS (crushfast-scan) method (Norman

53

Isotopic Analysis- Fluid At Salt Wells Area (Shevenell & Garside, 2003) |  

Open Energy Info (EERE)

Isotopic Analysis- Fluid At Salt Wells Area (Shevenell & Garside, 2003) Isotopic Analysis- Fluid At Salt Wells Area (Shevenell & Garside, 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Salt Wells Area (Shevenell & Garside, 2003) Exploration Activity Details Location Salt Wells Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 2002 - 2002 Usefulness not useful DOE-funding Unknown Exploration Basis The objective of the study was to expand knowledge of Nevada's geothermal resource potential by providing new geochemical data from springs in less studied geothermal areas and to refine geochemical data from springs for which only incomplete data were available. This work fills in gaps in publicly available geochemical data, thereby enabling comprehensive

54

Lab Analysis Techniques | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Lab Analysis Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Lab Analysis Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Water rock interaction; Rapid and unambiguous identification of unknown minerals; Bulk and trace element analysis of rocks, minerals, and sediments; Obtain detailed information about rock composition and morphology; Determine detailed information about rock composition and morphology; Cuttings are used to define lithology; Core analysis is done to define lithology

55

Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Rao, Et Al.,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Rao, Et Al., 1996) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Rao, Et Al., 1996) Exploration Activity Details Location Valles Caldera - Redondo Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown References U. Fehn, R. T. D. Teng, Usha Rao, Fraser E. Goff (1996) Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Retrieved from

56

Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Rao, Et Al.,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Rao, Et Al., 1996) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Rao, Et Al., 1996) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown References U. Fehn, R. T. D. Teng, Usha Rao, Fraser E. Goff (1996) Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Retrieved from

57

Isotopic Analysis-Fluid At Raft River Geothermal Area (1982) | Open Energy  

Open Energy Info (EERE)

Analysis-Fluid At Raft River Geothermal Area Analysis-Fluid At Raft River Geothermal Area (1982) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1982 Usefulness not useful DOE-funding Unknown Exploration Basis Determine which reservoir model best matches the isotope data. Notes 1) Chemical and light-stable isotope data are presented for water samples from the Raft River geothermal area and nearby. On the basis of chemical character, as defined by a trilinear plot of per cent milliequivalents, and light-stable isotope data, the waters in the geothermal area can be divided into waters that have and have not mixed with cold water. 2) Helium isotope ratios have been measured in geothermal fluids. These ratios have been interpreted in terms of the processes which supply He in distinct isotopic

58

Elemental Analysis with Fluid Inclusion | Open Energy Information  

Open Energy Info (EERE)

0.46 months job High-End Estimate: 4 weeks0.0767 years 672 hours 28 days 0.92 months job Dictionary.png Elemental Analysis with Fluid Inclusion: No definition has been...

59

The Synthetic Dual-Doppler Analysis Technique  

Science Conference Proceedings (OSTI)

Synthetic dual-Doppler (SDD) is a single-Doppler analysis technique that combines measurements from two different times, provided the viewing angle changes significantly. In this study, the viability of the SDD technique is investigated through ...

Brian A. Klimowski; John D. Marwitz

1992-12-01T23:59:59.000Z

60

Isotopic Analysis-Fluid At Long Valley Caldera Geothermal Area (1977) |  

Open Energy Info (EERE)

Fluid At Long Valley Caldera Geothermal Area (1977) Fluid At Long Valley Caldera Geothermal Area (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Long Valley Caldera Geothermal Area (1977) Exploration Activity Details Location Long Valley Caldera Geothermal Area Exploration Technique Isotopic Analysis-Fluid Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis Estimate deep reservoir temperature Notes The oxygen isotope compositions of dissolved sulfate and water from hot springs and shallow drillholes have been tested. Methods are described to calculate the effects of boiling and dilution. The geothermometer, is applied to thermal systems of Yellowstone Park, Wyoming, Long Valley, California, and Raft River, Idaho to estimate deep reservoir temperatures

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Isotopic Analysis- Fluid At Chena Area (Erkan, Et. Al., 2008) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Fluid At Chena Area (Erkan, Et. Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Chena Area (Erkan, Et. Al., 2008) Exploration Activity Details Location Chena Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown Notes Stable isotope analyses showthat thermalwaters at Chena Hot Springs are meteoric in origin. A Carbon-14 analysis indicates that the age of the springwaters is less than 3000 years. The minimum depth of circulation must

62

Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff, Et Al.,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff, Et Al., 1981) (Redirected from Isotopic Analysis At Fenton Hill Hdr Geothermal Area (Goff, Et Al., 1981)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff, Et Al., 1981) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown References Fraser E. Goff, Charles O. Grigsby, Pat E. Trujillo Jr, Dale Counce,

63

Fluid Inclusion Analysis At Coso Geothermal Area (2005-2006) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Fluid Inclusion Analysis At Coso Geothermal Area (2005-2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (2005-2006) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Fluid Inclusion Analysis Activity Date 2005 - 2006 Usefulness not indicated DOE-funding Unknown Exploration Basis Include more wells from previous analysis Notes This paper focuses on the interpretation of the additional wells (4 bore holes) and comparison to the previous wells. Preliminary correlation

64

Gas Analysis Of Geothermal Fluid Inclusions- A New Technology For  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Gas Analysis Of Geothermal Fluid Inclusions- A New Technology For Geothermal Exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Gas Analysis Of Geothermal Fluid Inclusions- A New Technology For Geothermal Exploration Details Activities (7) Areas (6) Regions (0) Abstract: To increase our knowledge of gaseous species in geothermal systems by fluid inclusion analysis in order to facilitate the use of gas analysis in geothermal exploration. The knowledge of gained by this program can be applied to geothermal exploration, which may expand geothermal

65

Isotopic Analysis- Fluid At Long Valley Caldera Area (Evans, Et Al., 2002)  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Fluid At Long Valley Caldera Area (Evans, Et Al., 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Long Valley Caldera Area (Evans, Et Al., 2002) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown Notes Detailed chemical and isotopic studies not only help quantify the discharge, but also may provide additional insight to subsurface conditions. For example, CO2-rich groundwaters that are cold and dilute may

66

Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff & Janik,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff & Janik, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal Area (Goff & Janik, 2002) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from HDR well References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles Caldera Region, New Mexico And Comparisons With Gases At Yellowstone, Long

67

COMPUTATIONAL FLUID DYNAMICS MODELING ANALYSIS OF COMBUSTORS  

DOE Green Energy (OSTI)

In the current fiscal year FY01, several CFD simulations were conducted to investigate the effects of moisture in biomass/coal, particle injection locations, and flow parameters on carbon burnout and NO{sub x} inside a 150 MW GEEZER industrial boiler. Various simulations were designed to predict the suitability of biomass cofiring in coal combustors, and to explore the possibility of using biomass as a reburning fuel to reduce NO{sub x}. Some additional CFD simulations were also conducted on CERF combustor to examine the combustion characteristics of pulverized coal in enriched O{sub 2}/CO{sub 2} environments. Most of the CFD models available in the literature treat particles to be point masses with uniform temperature inside the particles. This isothermal condition may not be suitable for larger biomass particles. To this end, a stand alone program was developed from the first principles to account for heat conduction from the surface of the particle to its center. It is envisaged that the recently developed non-isothermal stand alone module will be integrated with the Fluent solver during next fiscal year to accurately predict the carbon burnout from larger biomass particles. Anisotropy in heat transfer in radial and axial will be explored using different conductivities in radial and axial directions. The above models will be validated/tested on various fullscale industrial boilers. The current NO{sub x} modules will be modified to account for local CH, CH{sub 2}, and CH{sub 3} radicals chemistry, currently it is based on global chemistry. It may also be worth exploring the effect of enriched O{sub 2}/CO{sub 2} environment on carbon burnout and NO{sub x} concentration. The research objective of this study is to develop a 3-Dimensional Combustor Model for Biomass Co-firing and reburning applications using the Fluent Computational Fluid Dynamics Code.

Mathur, M.P.; Freeman, Mark (U.S. DOE National Energy Technology Laboratory); Gera, Dinesh (Fluent, Inc.)

2001-11-06T23:59:59.000Z

68

A Unified Analysis-Initialization Technique  

Science Conference Proceedings (OSTI)

A unified analysis-initialization technique is introduced and tested in the framework of the shallow water equations. It consists of iterating multivariate optimal interpolation and nonlinear normal mode initialization. For extratropical regions, ...

David L. Williamson; Roger Daley

1983-08-01T23:59:59.000Z

69

Isotopic Analysis-Fluid At Geysers Geothermal Area (1982) | Open Energy  

Open Energy Info (EERE)

82) 82) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Geysers Geothermal Area (1982) Exploration Activity Details Location Geysers Geothermal Area Exploration Technique Isotopic Analysis-Fluid Activity Date 1982 Usefulness not indicated DOE-funding Unknown Notes Helium isotope ratios have been measured in geothermal fluids. These ratios have been interpreted in terms of the processes which supply He in distinct isotopic ratios (i.e. magmatic He, ~10 Ra; atmospheric He, Ra; and crustal He, ~0.1 Ra) and in terms of the processes which can alter the isotopic ratio (hydrologic mixing, U-Th series alpha production and weathering release of crustal He, magma aging and tritiugenic addition of 3He). Raft

70

Complex Fluid Analysis with the Advanced Distillation Curve Approach  

E-Print Network (OSTI)

the flask. Heaters are controlled by a model predictive proportional-integral-derivative (PID) controllerComplex Fluid Analysis with the Advanced Distillation Curve Approach Thomas J. Bruno, Lisa S. Ott of petroleomics, as asserted by Marshall and Rodgers, include quantitation of species, modeling, and informatics

71

Measurement techniques for local and global fluid dynamic quantities in two and three phase systems  

SciTech Connect

This report presents a critical review of the methods available for assessing the fluid dynamic parameters in large industrial two and three phase bubble column and slurry bubble column reactors operated at high pressure and temperature. The physical principles behind various methods are explained, and the basic design of the instrumentation needed to implement each measurement principle is discussed. Fluid dynamic properties of interest are: gas, liquid and solids holdup and their axial and radial distribution as well as the velocity distribution of the two (bubble column) or three phases (slurry bubble column). This information on operating pilot plant and plant reactors is essential to verify the computational fluid dynamic codes as well as scale-up rules used in reactor design. Without such information extensive and costly scale-up to large reactors that exploit syngas chemistries, and other reactors in production of fuels and chemicals, cannot be avoided. In this report, available measurement techniques for evaluation of global and local phase holdups, instantaneous and average phase velocities and for the determination of bubble sizes in gas-liquid and gas-liquid-solid systems are reviewed. Advantages and disadvantages of various techniques are discussed. Particular emphasis is placed on identifying methods that can be employed on large scale, thick wall, high pressure and high temperature reactors used in the manufacture of fuels and chemicals from synthesis gas and its derivatives.

Kumar, S.; Dudukovic, M.P. [Washington Univ., St. Louis, MO (United States). Chemical Reaction Engineering Lab.; Toseland, B.A. [Air Products and Chemicals, Inc., Lehigh Valley, PA (United States)

1996-03-01T23:59:59.000Z

72

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 1 Techniques and Applications in Lipid Analysis  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 1 Techniques and Applications in Lipid Analysis Methods and Analyses eChapters Methods - Analyses Books 6BFA9B7918529F3FEC884BD9D5F59B4A AOCS Press D

73

Fluid Inclusion Analysis At U.S. West Region (Laney, 2005) | Open Energy  

Open Energy Info (EERE)

U.S. West Region (Laney, 2005) U.S. West Region (Laney, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At U.S. West Region (Laney, 2005) Exploration Activity Details Location U.S. West Region Exploration Technique Fluid Inclusion Analysis Activity Date Usefulness useful DOE-funding Unknown Notes Characterization and Conceptual Modeling of Magmatically-Heated and Deep-Circulation, High-Temperature Hydrothermal Systems in the Basin and Range and Cordilleran United States, Moore, Nash, Nemcok, Lutz, Norton, Kaspereit, Berard, van de Putte, Johnson and Deymonaz. Utilizing a wealth of formerly proprietary subsurface samples and datasets for exemplary high-temperature western U.S. geothermal systems, develop and publish detailed and refined new conceptual and numerical hydrothermal-history

74

Sampling and analysis methods for geothermal fluids and gases  

DOE Green Energy (OSTI)

The sampling procedures for geothermal fluids and gases include: sampling hot springs, fumaroles, etc.; sampling condensed brine and entrained gases; sampling steam-lines; low pressure separator systems; high pressure separator systems; two-phase sampling; downhole samplers; and miscellaneous methods. The recommended analytical methods compiled here cover physical properties, dissolved solids, and dissolved and entrained gases. The sequences of methods listed for each parameter are: wet chemical, gravimetric, colorimetric, electrode, atomic absorption, flame emission, x-ray fluorescence, inductively coupled plasma-atomic emission spectroscopy, ion exchange chromatography, spark source mass spectrometry, neutron activation analysis, and emission spectrometry. Material on correction of brine component concentrations for steam loss during flashing is presented. (MHR)

Watson, J.C.

1978-07-01T23:59:59.000Z

75

Multidimensional Data Model Research for Data Mart Based Analysis System of Drilling Fluid  

Science Conference Proceedings (OSTI)

For the sake of complex analysis requirements of drilling fluid analysis system, this paper proposes a multidimensional data model and implement the solution of data mart due to the analyzing weaknesses of conventional information system. Since the database ... Keywords: drilling fluid, Data Mart, Multidimensional Data Model, Multi-Analysis, Fact Tables, Dimension Tables

Li Jian; Wang Bing; Xu Bihua; Liang Dachun

2010-12-01T23:59:59.000Z

76

GPA a tool for fluid scalability analysis of massively parallel systems  

E-Print Network (OSTI)

analysis, GPA first generates an abstract representation of the system of ODEs and then dynamically. Hayden, and J. T. Bradley, "Fluid Analysis of Energy Consumption using Rewards in Massively ParallelGPA ­ a tool for fluid scalability analysis of massively parallel systems Anton Stefanek Richard A

Imperial College, London

77

A comparison of grid-based techniques for Navier-Stokes fluid simulation in computer graphics  

E-Print Network (OSTI)

1. Fluid Simulation in Computer Graphics 2. PreviousB. Applications in Computer Graphics II The Navier Stokesstable ?uid dynamics for computer graphics. In SIGGRAPH

Chrisman, Cameron

2008-01-01T23:59:59.000Z

78

Solution of fluid-structure interaction problems using a discontinuous Galerkin technique  

E-Print Network (OSTI)

The present work aims to address the problem of fluid-structure interaction using a discontinuous Galerkin approach. Starting from the Navier-Stokes equations on a fixed domain, an arbitrary Lagrangian Eulerian (ALE) ...

Mohnot, Anshul

2008-01-01T23:59:59.000Z

79

Solution of Fluid-Structure Interaction Problems using a Discontinuous Galerkin Technique  

E-Print Network (OSTI)

The present work aims to address the problem of fluid-structure interaction using a discontinuous Galerkin approach. Starting from the Navier-Stokes equations on a fixed domain, an arbitrary Lagrangian Eulerian (ALE) ...

Mohnot, Anshul

80

Analysis of Traffic Scheduling Technique for Smart Grid Mesh ...  

Science Conference Proceedings (OSTI)

Analysis of Traffic Scheduling Technique for Smart Grid Mesh Networks ... In this paper, we present a multi-gate mesh network architecture that has ...

2012-01-03T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Lipid Analysis and Lipidomics: New Techniques and Application  

Science Conference Proceedings (OSTI)

Lipid Analysis will offer the lipid analyst an array of essential analytical tools in the fields of chromatography, mass spectrometry, spectroscopy, magnetic resonance, and chemometrics. Lipid Analysis and Lipidomics: New Techniques and Application Method

82

Fluid flow analysis in a rough fracture (type II) using complex networks and lattice Boltzmann method  

E-Print Network (OSTI)

Complexity of fluid flow in a rough fracture is induced by the complex configurations of opening areas between the fracture planes. In this study, we model fluid flow in an evolvable real rock joint structure, which under certain normal load is sheared. In an experimental study, information regarding about apertures of the rock joint during consecutive 20 mm displacements and fluid flow (permeability) in different pressure heads have been recorded by a scanner laser. Our aim in this study is to simulate the fluid flow in the mentioned complex geometries using the lattice Boltzmann method (LBM), while the characteristics of the aperture field will be compared with the modeled fluid flow permeability To characterize the aperture, we use a new concept in the graph theory, namely: complex networks and motif analysis of the corresponding networks. In this approach, the similar aperture profile along the fluid flow direction is mapped in to a network space. The modeled permeability using the LBM shows good correlat...

Ghaffari, H; Sharifzadeh, M; Young, R P

2011-01-01T23:59:59.000Z

83

Fluid injection profiles: modern analysis of wellbore temperature survey  

DOE Green Energy (OSTI)

Exact and approximate solutions for heat flow in a fluid injection well are presented. By using the approximate results, temperature surveys can be quickly analyzed in the field, and the well depths where fluids leave and the departing flow rates at these depths can be precisely determined. Although this method eliminates the need for indigenous and post injection shut-in temperatures, several surveys must be taken just before and during the injection period which can be as short as several hours. In the application described the method was used to locate the depths where hydraulic fractures were initiated in a hot dry rock geothermal well.

Murphy, H.D.

1977-01-01T23:59:59.000Z

84

Coupling of a multizone airflow simulation program with computational fluid dynamics for indoor environmental analysis  

E-Print Network (OSTI)

Current design of building indoor environment comprises macroscopIC approaches, such as CONT AM multizone airflow analysis tool, and microscopic approaches that apply Computational Fluid Dynamics (CFD). Each has certain ...

Gao, Yang, 1974-

2002-01-01T23:59:59.000Z

85

Gas Analysis of Geothermal Fluid Inclusions: A New Technology For Geothermal Exploration  

DOE Green Energy (OSTI)

To increase our knowledge of gaseous species in geothermal systems by fluid inclusion analysis in order to facilitate the use of gas analysis in geothermal exploration. The knowledge of gained by this program can be applied to geothermal exploration, which may expand geothermal production. Knowledge of the gas contents in reservoir fluids can be applied to fluid inclusion gas analysis of drill chip cuttings in a similar fashion as used in the petroleum industry. Thus the results of this project may lower exploration costs both in the initial phase and lower drill hole completion costs. Commercial costs for fluid inclusion analysis done on at 20 feet intervals on chip samples for 10,000 ft oil wells is about $6,000, and the turn around time is a few weeks.

David I. Norman; Joseph Moore

2004-03-09T23:59:59.000Z

86

In situ stress, fracture, and fluid flow analysis in Well 38C-9: an  

Open Energy Info (EERE)

In situ stress, fracture, and fluid flow analysis in Well 38C-9: an In situ stress, fracture, and fluid flow analysis in Well 38C-9: an enhanced geothermal system in the Coso geothermal field Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: In situ stress, fracture, and fluid flow analysis in Well 38C-9: an enhanced geothermal system in the Coso geothermal field Abstract Geoscientists from the Coso Operating Company, EGI-Utah, GeoMechanics International, and the U.S. Geological Survey are cooperating in a multi-year study to develop an Enhanced Geothermal System (EGS) in the Coso Geothermal Field. Key to the creation of an EGS is an understanding of the relationship among natural fracture distribution, fluid flow, and the ambient tectonic stresses that exist within the resource in order to design

87

IN SITU STRESS, FRACTURE AND FLUID FLOW ANALYSIS-EAST FLANK OF THE COSO  

Open Energy Info (EERE)

IN SITU STRESS, FRACTURE AND FLUID FLOW ANALYSIS-EAST FLANK OF THE COSO IN SITU STRESS, FRACTURE AND FLUID FLOW ANALYSIS-EAST FLANK OF THE COSO GEOTHERMAL FIELD Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: IN SITU STRESS, FRACTURE AND FLUID FLOW ANALYSIS-EAST FLANK OF THE COSO GEOTHERMAL FIELD Details Activities (1) Areas (1) Regions (0) Abstract: High rock temperatures, a high degree of fracturing, high tectonic stresses, and low permeability are the combination of qualities that define an ideal candidate-Enhanced Geothermal System (EGS) reservoir. The Coso Geothermal Field is an area where fluid temperatures exceeding 300°C have been measured at depths less than 10,000 feet and the reservoir is both highly fractured and tectonically stressed. Some of the wells within this portion of the reservoir are relatively impermeable,

88

IN SITU STRESS, FRACTURE, AND FLUID FLOW ANALYSIS IN WELL 38C-9:AN ENHANCED  

Open Energy Info (EERE)

FRACTURE, AND FLUID FLOW ANALYSIS IN WELL 38C-9:AN ENHANCED FRACTURE, AND FLUID FLOW ANALYSIS IN WELL 38C-9:AN ENHANCED GEOTHERMAL SYSTEM IN THE COSO GEOTHERMAL FIELD Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: IN SITU STRESS, FRACTURE, AND FLUID FLOW ANALYSIS IN WELL 38C-9:AN ENHANCED GEOTHERMAL SYSTEM IN THE COSO GEOTHERMAL FIELD Details Activities (2) Areas (1) Regions (0) Abstract: Geoscientists from the Coso Operating Company, EGI-Utah, GeoMechanics International, and the U.S. Geological Survey are cooperating in a multi-year study to develop an Enhanced Geothermal System (EGS) in the Coso Geothermal Field. Key to the creation of an EGS is an understanding of the relationship among natural fracture distribution, fluid flow, and the ambient tectonic stresses that exist within the resource in order to design

89

Experimental Analysis of Water Based Drilling Fluid Aging Processes at High Temperature and High Pressure Conditions  

E-Print Network (OSTI)

In efforts to render the safest, fastest, and most cost efficient drilling program for a high temperature and high pressure (HT/HP) well the maximization of drilling operational efficiencies is key. Designing an adequate, HT/HP well specific, drilling fluid is of most importance and a technological challenge that can greatly affect the outcome of the overall operational efficiency. It is necessary to have a sound fundamental understanding of the behavior that water-based muds (WBM) exhibit when exposed to HT/HP conditions. Therefore, in order to adequately design and treat a WBM for a HT/HP well specific drilling program, it is essential that the mud be evaluated at HT/HP conditions. Currently, industry standard techniques used to evaluate WBM characteristics involve aging the fluid sample to a predetermined temperature, based on the anticipated bottom hole temperature (BHT), either statically or dynamically, for a predetermined length, then cooling and mixing the fluid and measuring its rheological properties at a significantly lower temperature. This, along with the fact that the fluid is not subjected to the anticipated bottom hole pressure (BHP) during or after the aging process, brings to question if the properties recorded are those that are truly experienced down-hole. Furthermore, these testing methods do not allow the user to effectively monitor the changes during the aging process. The research in this thesis is focused on evaluating a high performance WBM and the current test procedures used to evaluate their validity. Experimental static and dynamic aging tests were developed for comparative analysis as well to offer a more accurate and precise method to evaluate the effects experienced by WBM when subjected to HT/HP conditions. The experimental tests developed enable the user to monitor and evaluate, in real-time, the rheological changes that occur during the aging of a WBM while being subjected to true BHT and BHP. Detailed standard and experimental aging tests were conducted and suggest that the standard industry tests offer false rheological results with respect to true BHT and BHP. Furthermore, the experimental aging tests show that high pressure has a significant effect on the rheological properties of the WBM at elevated temperatures.

Zigmond, Brandon

2012-08-01T23:59:59.000Z

90

A fluid pressure and deformation analysis for geological sequestration of carbon dioxide  

SciTech Connect

We present a hydro-mechanical model and deformation analysis for geological sequestration of carbon dioxide. The model considers the poroelastic effects by taking into account the two-way coupling between the geomechanical response and the fluid flow process in greater detail. In order for analytical solutions, the simplified hydro-mechanical model includes the geomechanical part that relies on the theory of linear elasticity, while the fluid flow is based on the Darcy's law. The model was derived through coupling the two parts using the standard linear poroelasticity theory. Analytical solutions for fluid pressure field were obtained for a typical geological sequestration scenario and the solutions for ground deformation were obtained using the method of Green's function. Solutions predict the temporal and spatial variation of fluid pressure, the effect of permeability and elastic modulus on the fluid pressure, the ground surface uplift, and the radial deformation during the entire injection period.

Xu, Zhijie; Fang, Yilin; Scheibe, Timothy D.; Bonneville, Alain HR

2012-06-07T23:59:59.000Z

91

Measurement techniques for local and global fluid dynamic quantities in two and three phase systems  

Science Conference Proceedings (OSTI)

Available measurement techniques for evaluation of global and local phase holdups, instantaneous and average phase velocities and for the determination of bubble sizes in gas-liquid and gas-liquid-solid systems are reviewed. Advantages and disadvantages of various techniques are discussed. Particular emphasis is placed on identifying methods that can be employed on large scale, thick wall, high pressure and high temperature reactors used in the manufacture of fuels and chemicals from synthesis gas and its derivatives.

Kumar, S.; Dudukovic, M.P.; Toseland, B.A.

1998-01-01T23:59:59.000Z

92

An Objective Isobaric/Isentropic Technique for Upper Air Analysis  

Science Conference Proceedings (OSTI)

An objective meteorological analysis technique has been developed to provide both horizontal and vertical (cross-sectional) upper air analyses. The horizontal analyses are made at grid points that lie on isobaric levels in a conventional manner. ...

Robert L. Mancuso; Roy M. Endlich; L. J. Ehernberger

1981-06-01T23:59:59.000Z

93

New Techniques to Characterize and Remove Water-Based Drilling Fluids Filter Cake  

E-Print Network (OSTI)

Filter cake characterization is very important in drilling and completion operations. Heterogeneity of the filter cake plays a key role in the design of chemical treatments needed to remove the filter cake. The objectives of this study are to characterize the filter cake under static and dynamic conditions, evaluate the using of polylactic acid and chelating agents to remove calcium carbonate-based filter cake, assess glycolic acid to remove Mn3O4-based filter cake, and evaluate ilmenite as a weighting material for water-based drilling fluid. In order to characterize the filter cake, computer tomography (CT) was used in combination with the scanning electronic microscopy (SEM) to analyze the filter cake. A modified HPHT filter cell was developed to perform the filtration tests. A see-through-cell was used to check the compatibility of different chemicals that were used to remove the filter cake. The results obtained from the CT scan showed that the filter cake was heterogeneous and contained two layers with different properties under static and dynamic conditions. Under static conditions, the formation of filter cake changed from compression to buildup; while under dynamic conditions, the filter cake was formed under continuous buildup. Polylactic acid was used as a component of the drilling fluid components and the results obtained showed that the drill-in fluid had stable rheological properties up to 250?F over 24 hrs. The removal efficiency of the filter cake was nearly 100% and the return permeability was about 100% for Indiana limestone and Berea sandstone cores, when using a weight ratio of polylactic acid to calcium carbonate 3 to 1. GLDA (pH 3.3) and HEDTA (pH 4) can be used to remove the filter cake in one step without using ?-amylase enzyme solutions. GLDA (20 wt% in a 200 g solution and pH of 3.3) and HEDTA (20 wt% in a 200 g solution and pH 4) had 100% removal efficiency of the filter cake using Indiana limestone and Berea sandstone cores. Chelate solutions, GLDA (pH of 3.3 - 13) and HEDTA (pH of 4 and 7) were incompatible with ?-amylase enzyme solutions over a wide range of temperatures. CT results showed that no formation damage was observed when using chelating agents as a breaker to remove the calcium carbonate filter cake. Manganese tetraoxide-based filter cake had a removal efficiency of 85% after 20 hrs soaking with glycolic acid (5 wt%) after soaking with ?-amylase for 24 hrs, and 89% after reaction with acid mixture (1 wt% HCl and 7 wt% glycolic acid) for 16 hrs. for both methods, the retained permeability was 100% for Indiana limestone cores and 120% for Berea sandstone cores, which indication maximum productivity of these formations. Ilmenite-based filter cake was ideal for HPHT applications, 0.2 in. thickness and 12 cm3 filtrate under dynamic conditions. The filtrate volume was reduced by adding a minor amount of CaCO3 solids that improved the particles packing. No sag problem was observed when using the micronized ilmenite in water-based drilling fluids. Ilmenite has a negative zeta potential in alkaline media and had a stable dispersion in water at pH > 7.

Elkatatny, Salaheldin Mahmoud

2013-05-01T23:59:59.000Z

94

Modular In-Line Fluid Analysis System - PNNL: Available ...  

... Typical limits for large industrial diesel engines, or gas turbines (c) Requires 241Americium source (see specifications below) Infrared Analysis ...

95

Developments in Laser Techniques and Applications to Fluid Mechanics Proceedings of the 7  

E-Print Network (OSTI)

. Symp. Editors: R.J. Adrian, D.F.G. Durão, F. Durst, M.V. Heitor, M. Maeda and J.H. Whitelaw Table. Domnick, E. Schubert, H.W. Bergmann and F. Durst. Part II APPLICATIONS TO COMBUSTION · Characteristics of bubbles by phase Doppler technique and trajectory ambiguity. G. Grehan, F. Onofri, G. Gouesbet, F. Durst

Instituto de Sistemas e Robotica

96

AIR INGRESS ANALYSIS: PART 2 COMPUTATIONAL FLUID DYNAMIC MODELS  

Science Conference Proceedings (OSTI)

The Idaho National Laboratory (INL), under the auspices of the U.S. Department of Energy, is performing research and development that focuses on key phenomena important during potential scenarios that may occur in very high temperature reactors (VHTRs). Phenomena Identification and Ranking Studies to date have ranked an air ingress event, following on the heels of a VHTR depressurization, as important with regard to core safety. Consequently, the development of advanced air ingress-related models and verification and validation data are a very high priority. Following a loss of coolant and system depressurization incident, air will enter the core of the High Temperature Gas Cooled Reactor through the break, possibly causing oxidation of the in-the core and reflector graphite structure. Simple core and plant models indicate that, under certain circumstances, the oxidation may proceed at an elevated rate with additional heat generated from the oxidation reaction itself. Under postulated conditions of fluid flow and temperature, excessive degradation of the lower plenum graphite can lead to a loss of structural support. Excessive oxidation of core graphite can also lead to the release of fission products into the confinement, which could be detrimental to a reactor safety. Computational fluid dynamic model developed in this study will improve our understanding of this phenomenon. This paper presents two-dimensional and three-dimensional CFD results for the quantitative assessment of the air ingress phenomena. A portion of results of the density-driven stratified flow in the inlet pipe will be compared with results of the experimental results.

Chang H. Oh; Eung S. Kim; Richard Schultz; Hans Gougar; David Petti; Hyung S. Kang

2011-01-01T23:59:59.000Z

97

A PROCESS FOR THE RECOVERY OF URANIUM FROM NUCLEAR FUEL ELEMENTS USING FLUID-BED DRYING AND VOLATILITY TECHNIQUES  

SciTech Connect

A process scheme for the recovery of uranium from fuel elements has been developed. The scheme combines continuous fluid-bed drying and fluoride volatility techniques after initial dissolution of the fuel element in the appropriate aqueous system, hence the designation ADF, Aqueous Dry Fluorination Process. The application of this process to the recovery of uranium from highly enriched, low uranium-zirconium alloy plate-type fuels is described. ln the process, the feed solution is sprayed horizontally through a two-fluid nozzle and is atomized directly in the heated fluidized bed. The spray droplets are dried on the fluidized particles and form a dense coating. Excessive particle growth was limited by the use of air attrition-jets inserted directly in the bed. Aqueous hydrofluoric acid solutions containing l.2 to 3.6 M zirconiuni, 0.007 to 0.03 M uranium, and free acid concentrations from 1 to about l0 M were successfully processed in a 6-in.-diameter Inconel fluid-bed spray dryer. Rates equivalent to about 3.l kg/hr of zirconium were achieved, 160 ml/min with the most concentrated feed solution. Experiments were successfully carried out from 240 to 450 deg C. A new design for a two-fluid nozzle was developed. Extensive work was done to identify the various zirconium fluoride compounds formed. The granular dryer product was subsequently fluorinated at temperatures to 600 deg C in fluid beds and to 700 deg C in static beds to remove the uranium as the volatile hexafluoride. About 90 to 95% uranium removal was consistently achieved near 600 deg C. The relatively low uranium recovery under these conditions is a disadvantage for the application to zirconium-base fuels. It was found necessary to resort to static beds and higher temperatures to achieve greater removal. Since the fluorine attack on nickel, the material of construction, is prohibitive at temperatures above 600 deg C, a disposable fluorinator concept for use with static beds is described. Results of corrosion studies are reported. A preliminary chemical flowsheet with a design capacity of 1l00 kg of uranium (93% enriched) annually is presented. (auth)

Levitz, N.; Barghusen, J.; Carls, E.; Jonke, A.A.

1961-11-01T23:59:59.000Z

98

Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal...  

Open Energy Info (EERE)

Inyo and Kern Counties, California. Supplement. Isotope geochemistry and Appendix H. Final report Retrieved from "http:en.openei.orgwindex.php?titleIsotopicAnalysis-Flu...

99

Techniques for Debugging Parallel Programs with Flowback Analysis  

E-Print Network (OSTI)

Flowback analysis is a powerful technique for debugging programs. It allows the programmer to examine dynamic dependences in a program's execution history without having to re-execute the program. The goal is to present to the programmer a graphical view of the dynamic program dependences. We are building a system, called PPD, that performs flowback analysis while keeping the execution time overhead low. We also extend the semantics of flowback analysis to parallel programs. This paper describes details of the graphs and algorithms needed to implement efficient flowback analysis for parallel programs. Execution time overhead is kept low by recording only a small amount of trace during a program's execution. We use semantic analysis and a technique called incremental tracing to keep the time and space overhead low. As part of the semantic analysis, PPD uses a static program dependence graph structure that reduces the amount of work done at compile time and takes advantage of the dynamic...

Jong-deok Choi; Barton P. Miller; Robert H.B. Netzer

1991-01-01T23:59:59.000Z

100

Complexity analysis of the turbulent environmental fluid flow time series  

E-Print Network (OSTI)

We have used the Kolmogorov complexities, sample and permutation entropies to quantify the randomness degree in river flow time series of two mountain rivers in Bosnia and Herzegovina, representing the turbulent environmental fluid, for the period 1926-1990. In particular, we have examined the monthly river flow time series from two rivers (Miljacka and Bosnia) in mountain part of their flow and then calculated the Kolmogorov Complexity (KL) based on the Lempel-Ziv Algorithm (LZA) (Lower - KLL and Upper - KLU), Sample Entropy (SE) and Permutation Entropy (PE) values for each time series. The results indicate that the KLL, KLU, SE and PE values in two rivers are close to each other regardless of the amplitude differences in their monthly flow rates. We have illustrated the changes in mountain river flow complexity by experiments using (i) the data set for the Bosnia River and (ii) anticipated human activities and projected climate changes. We have explored the sensitivity of considered measures in dependence on the length of time series. In addition, we have divided the period 1926-1990 into three sub-intervals: (a) 1926-1945, (b)1946-1965 and (c)1966-1990, and calculated the KLL, KLU, SE and PE values for the various time series in these sub-intervals. It is found that during the period 1946-1965, there is a decrease in their complexities, and corresponding changes in the SE and PE, in comparison to the period 1926-1990. This complexity loss may be primarily attributed to (i) human interventions, after Second World War, on these rivers because of their use for water consumption and (ii) climate change in recent time.

Dragutin T. Mihailovic; Emilija Nikolic-Djoric; Nusret Dreskovic; Gordan Mimic

2013-01-10T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Cold Plasma Wave Analysis in Magneto-Rotational Fluids  

E-Print Network (OSTI)

This paper is devoted to investigate the cold plasma wave properties. The analysis has been restricted to the neighborhood of the pair production region of the Kerr magnetosphere. The Fourier analyzed general relativistic magnetohydrodynamical equations are dealt under special circumstances and dispersion relations are obtained. We find the $x$-component of the complex wave vector numerically. The corresponding components of the propagation vector, attenuation vector, phase and group velocities are shown in graphs. The direction and dispersion of waves are investigated.

M. Sharif; Umber Sheikh

2010-05-25T23:59:59.000Z

102

Flow control techniques for real-time media applications in best-effort networks using fluid models  

E-Print Network (OSTI)

Quality of Service (QoS) in real-time media applications is an area of current interest because of the increasing demand for audio/video, and generally multimedia applications, over best effort networks, such as the Internet. Media applications are transported using the User Datagram Protocol (UDP) and tend to use a disproportionate amount of network bandwidth as they do not perform congestion or flow control. Methods for application QoS control are desirable to enable users to perceive a consistent media quality. This can be accomplished by either modifying current protocols at the transport layer or by implementing new control algorithms at the application layer irrespective of the protocol used at the transport layer. The objective of this research is to improve the QoS delivered to end-users in real-time applications transported over best-effort packet-switched networks. This is accomplished using UDP at the transport layer, along with adaptive predictive and reactive control at the application layer. An end-to-end fluid model is used, including the source buffer, the network and the destination buffer. Traditional control techniques, along with more advanced adaptive predictive control methods, are considered in order to provide the desirable QoS and make a best-effort network an attractive channel for interactive multimedia applications. The effectiveness of the control methods, is examined using a Simulink-based fluid-level simulator in combination with trace files extracted from the well-known network simulator ns-2. The results show that improvement in real-time applications transported over best-effort networks using unreliable transport protocols, such as UDP, is feasible. The improvement in QoS is reflected in the reduction of flow loss at the expense of flow dead-time increase or playback disruptions or both.

Konstantinou, Apostolos

2004-08-01T23:59:59.000Z

103

Nondestructive analysis of oil shales with PGNAA technique  

DOE Green Energy (OSTI)

The feasibility of nondestructive analysis of oil shales using the prompt gamma neutron activation analysis (PGNAA) technique was studied. The PGNAA technique, developed originally for continuous analysis of coal on the belt, was applied to the analysis of eight oil-shale samples, containing between 9 and 60 gallons of oil per ton and 0.8% to 3.4% hydrogen. The PGNAA technique was modified using four neutron moderation conditions: non-moderated neutrons; non-moderated and partially moderated neutrons reflected from a water box behind the source; neutrons moderated in a water box behind and in front of the source; and neutrons strongly moderated in a polyethylene block placed in front of the source and with reflected neutrons from a water box behind the source. The studied oil shales were measured in their aluminum or wooden (masonite) boxes. The obtained Ge-Li spectra were processed by LSI-11/23 computer, using the modified programs previously developed by SAI for continuous coal analysis. The results of such processing (the peak areas for several gamma lines) were corrected and plotted against the weight percent of each analyzed element (from the chemical analysis). Response curves developed for H, C, N, S, Na, Mg, Al, Si, Ti, Ca, Fe and K show generally good linear proportions of peak area to the weight percent of the element. For hydrogen determination, NMD conditions had to be used where the response curve was not linear, but followed a curve whose slope rose with hydrogen concentration. This effect is caused by improving neutron self-moderation in sample boxes of rich oil shales, as compared to poor self-moderation of neutrons in very lean oil shales. The moisture in oil shales was measured by microwave absorption technique in small masonite boxes. This method was calibrated four times using oil-shale samples mixed gradually with larger and larger amounts of water.

Maly, J.; Bozorgmanesh, H.

1984-02-01T23:59:59.000Z

104

PDM performance Test Results and Preliminary Analysis: Incompressible and Compressible Fluids  

Science Conference Proceedings (OSTI)

Three, small diameter, Moineau, positive displacement (drilling) motors (PDMs) were dynamometer tested using water, air-water mist, air-water foam, and aerated water. The motors included (1) a 1.5-inch OD, single-lobe mud motor; (2) a 1.69-inch OD, 5:6 multi-lobe mud motor; and (3) a 1.75-inch OD, 5:6 multi-lobe air motor. This paper describes the test apparatus, procedures, data analysis, and results. Incompressible and compressible fluid performance are compared; linear performance, predicted by a positive displacement motor model, is identified where it occurs. Preliminary results and conclusions are (1) the performance of all three motors is accurately modeled using a two-variable, linear model for incompressible fluid and (2) the model was not successfully adapted to model compressible fluid performance.

Dreesen, D.S.; Gruenhagan, E.; Cohen, J.C.; Moran, D.W.

1999-02-01T23:59:59.000Z

105

Experimental thin film deposition and surface analysis techniques  

DOE Green Energy (OSTI)

An attempt has been made to present some of the thin-film deposition and surface analysis techniques which may be useful in growing superionic conducting materials. Emphasis is made on the importance of being careful in selecting process parameters and materials in order to produce films with properties outlined in this article. Also, special care should be given to proper consideration of grain boundary effects.

Collins, W.E.; Rambabu, B.

1986-01-01T23:59:59.000Z

106

Ionic Liquid and Supercritical Fluid Hyphenated Techniques for Dissolution and Separation of Lanthanides, Actinides, and Fission Products  

SciTech Connect

This project is investigating techniques involving ionic liquids (IL) and supercritical (SC) fluids for dissolution and separation of lanthanides, actinides, and fission products. The research project consists of the following tasks: Study direct dissolution of lanthanide oxides, uranium dioxide and other actinide oxides in [bmin][Tf{sub 2}N] with TBP(HNO{sub 3}){sub 1.8}(H{sub 2}O){sub 0.6} and similar types of Lewis acid-Lewis base complexing agents; Measure distributions of dissolved metal species between the IL and the sc-CO{sub 2} phases under various temperature and pressure conditions; Investigate the chemistry of the dissolved metal species in both IL and sc-CO{sub 2} phases using spectroscopic and chemical methods; Evaluate potential applications of the new extraction techniques for nuclear waste management and for other projects. Supercritical carbon dioxide (sc-CO{sub 2}) and ionic liquids are considered green solvents for chemical reactions and separations. Above the critical point, CO{sub 2} has both gas- and liquid-like properties, making it capable of penetrating small pores of solids and dissolving organic compounds in the solid matrix. One application of sc-CO{sub 2} extraction technology is nuclear waste management. Ionic liquids are low-melting salts composed of an organic cation and an anion of various forms, with unique properties making them attractive replacements for the volatile organic solvents traditionally used in liquid-liquid extraction processes. One type of room temperature ionic liquid (RTIL) based on the 1-alkyl-3-methylimidazolium cation [bmin] with bis(trifluoromethylsulfonyl)imide anion [Tf{sub 2}N] is of particular interest for extraction of metal ions due to its water stability, relative low viscosity, high conductivity, and good electrochemical and thermal stability. Recent studies indicate that a coupled IL sc-CO{sub 2} extraction system can effectively transfer trivalent lanthanide and uranyl ions from nitric acid solutions. Advantages of this technique include operation at ambient temperature and pressure, selective extraction due to tunable sc-CO{sub 2} solvation strength, no IL loss during back-extraction, and no organic solvent introduced into the IL phase.

Wai, Chien M. [Univ. of Idaho, Moscow, ID (United States); Bruce Mincher

2012-12-01T23:59:59.000Z

107

Design sensitivity analysis and optimization of steady fluid-thermal systems  

E-Print Network (OSTI)

Design optimization of fluid-thermal systems has been an area of significant research interest for the aerospace and automotive industry. The subject studies the modification of internal and external flow passages under certain specified objective constraints while satisfying the governing flow equations. Amongst various available optimization procedures the analytical sensitivity analyses-based optimization is arguably the most efficient design tool for complex multi-dimensional practical problems. In this paper, we augmented the analysis capabilities of the computational fluid dynamics (CFD) code with design sensitivity analysis (DSA). The design sensitivities are computed efficiently via analytical differentiation methods. The CFD DSA codes are then combined with numerical optimization schemes. Finally, CFD DSA design optimization algorithm is applied to the optimization of heat exchanger fin and HVAC duct systems. 2001 Elsevier Science B.V. All rights reserved.

Balagangadhar; Uid-thermal Systems

2001-01-01T23:59:59.000Z

108

Sensitivity analysis techniques for models of human behavior.  

SciTech Connect

Human and social modeling has emerged as an important research area at Sandia National Laboratories due to its potential to improve national defense-related decision-making in the presence of uncertainty. To learn about which sensitivity analysis techniques are most suitable for models of human behavior, different promising methods were applied to an example model, tested, and compared. The example model simulates cognitive, behavioral, and social processes and interactions, and involves substantial nonlinearity, uncertainty, and variability. Results showed that some sensitivity analysis methods create similar results, and can thus be considered redundant. However, other methods, such as global methods that consider interactions between inputs, can generate insight not gained from traditional methods.

Bier, Asmeret Brooke

2010-09-01T23:59:59.000Z

109

Evaluation of energy system analysis techniques for identifying underground facilities  

Science Conference Proceedings (OSTI)

This report describes the results of a study to determine the feasibility and potential usefulness of applying energy system analysis techniques to help detect and characterize underground facilities that could be used for clandestine activities. Four off-the-shelf energy system modeling tools were considered: (1) ENPEP (Energy and Power Evaluation Program) - a total energy system supply/demand model, (2) ICARUS (Investigation of Costs and Reliability in Utility Systems) - an electric utility system dispatching (or production cost and reliability) model, (3) SMN (Spot Market Network) - an aggregate electric power transmission network model, and (4) PECO/LF (Philadelphia Electric Company/Load Flow) - a detailed electricity load flow model. For the purposes of most of this work, underground facilities were assumed to consume about 500 kW to 3 MW of electricity. For some of the work, facilities as large as 10-20 MW were considered. The analysis of each model was conducted in three stages: data evaluation, base-case analysis, and comparative case analysis. For ENPEP and ICARUS, open source data from Pakistan were used for the evaluations. For SMN and PECO/LF, the country data were not readily available, so data for the state of Arizona were used to test the general concept.

VanKuiken, J.C.; Kavicky, J.A.; Portante, E.C. [and others

1996-03-01T23:59:59.000Z

110

PVUSA instrumentation and data analysis techniques for photovoltaic systems  

DOE Green Energy (OSTI)

The Photovoltaics for Utility Scale Applications (PVUSA) project tests two types of PV systems at the main test site in Davis, California: new module technologies fielded as 20-kW Emerging Module Technology (EMT) arrays and more mature technologies fielded as 70- to 500-kW turnkey Utility-Scale (US) systems. PVUSA members have also installed systems in their service areas. Designed appropriately, data acquisition systems (DASs) can be a convenient and reliable means of assessing system performance, value, and health. Improperly designed, they can be complicated, difficult to use and maintain, and provide data of questionable validity. This report documents PVUSA PV system instrumentation and data analysis techniques and lessons learned. The report is intended to assist utility engineers, PV system designers, and project managers in establishing an objective, then, through a logical series of topics, facilitate selection and design of a DAS to meet the objective. Report sections include Performance Reporting Objectives (including operational versus research DAS), Recommended Measurements, Measurement Techniques, Calibration Issues, and Data Processing and Analysis Techniques. Conclusions and recommendations based on the several years of operation and performance monitoring are offered. This report is one in a series of 1994--1995 PVUSA reports documenting PVUSA lessons learned at the demonstration sites in Davis and Kerman, California. Other topical reports address: five-year assessment of EMTs; validation of the Kerman 500-kW grid support PV plant benefits; construction and safety experience in installing and operating PV systems; balance-of-system design and costs; procurement, acceptance, and rating practices for PV power plants; experience with power conditioning units and power quality.

Newmiller, J.; Hutchinson, P.; Townsend, T.; Whitaker, C.

1995-10-01T23:59:59.000Z

111

Modern Methods for Lipid AnalysisChapter 1 Atmospheric Pressure Ionization Techniques in Modern Lipid Analysis  

Science Conference Proceedings (OSTI)

Modern Methods for Lipid Analysis Chapter 1 Atmospheric Pressure Ionization Techniques in Modern Lipid Analysis Health Nutrition Biochemistry eChapters Methods - Analyses Books AOCS Press 2F9B8A831F53D269EADF2AB8911EFA88 AOCS Pr

112

Surfactant/detergent titration analysis method and apparatus for machine working fluids, surfactant-containing wastewater and the like  

DOE Patents (OSTI)

The present invention is an improved method and related apparatus for quantitatively analyzing machine working fluids and other aqueous compositions such as wastewater which contain various mixtures of cationic, neutral, and/or anionic surfactants, soluble soaps, and the like. The method utilizes a single-phase, non-aqueous, reactive titration composition containing water insoluble bismuth nitrate dissolved in glycerol for the titration reactant. The chemical reaction of the bismuth ion and glycerol with the surfactant in the test solutions results in formation of micelles, changes in micelle size, and the formation of insoluble bismuth soaps. These soaps are quantified by physical and chemical changes in the aqueous test solution. Both classical potentiometric analysis and turbidity measurements have been used as sensing techniques to determine the quantity of surfactant present in test solutions. This method is amenable to the analysis of various types of new, in-use, dirty or decomposed surfactants and detergents. It is a quick and efficient method utilizing a single-phase reaction without needing a separate extraction from the aqueous solution. It is adaptable to automated control with simple and reliable sensing methods. The method is applicable to a variety of compositions with concentrations from about 1% to about 10% weight. It is also applicable to the analysis of waste water containing surfactants with appropriate pre-treatments for concentration. 1 fig.

Smith, D.D.; Hiller, J.M.

1998-02-24T23:59:59.000Z

113

Surfactant/detergent titration analysis method and apparatus for machine working fluids, surfactant-containing wastewater and the like  

DOE Patents (OSTI)

The present invention is an improved method and related apparatus for quantitatively analyzing machine working fluids and other aqueous compositions such as wastewater which contain various mixtures of cationic, neutral, and/or anionic surfactants, soluble soaps, and the like. The method utilizes a single-phase, non-aqueous, reactive titration composition containing water insoluble bismuth nitrate dissolved in glycerol for the titration reactant. The chemical reaction of the bismuth ion and glycerol with the surfactant in the test solutions results in formation of micelles, changes in micelle size, and the formation of insoluble bismuth soaps. These soaps are quantified by physical and chemical changes in the aqueous test solution. Both classical potentiometric analysis and turbidity measurements have been used as sensing techniques to determine the quantity of surfactant present in test solutions. This method is amenable to the analysis of various types of new, in-use, dirty or decomposed surfactants and detergents. It is a quick and efficient method utilizing a single-phase reaction without needing a separate extraction from the aqueous solution. It is adaptable to automated control with simple and reliable sensing methods. The method is applicable to a variety of compositions with concentrations from about 1% to about 10% weight. It is also applicable to the analysis of waste water containing surfactants with appropriate pre-treatments for concentration.

Smith, Douglas D. (Knoxville, TN); Hiller, John M. (Oak Ridge, TN)

1998-01-01T23:59:59.000Z

114

Shear-slip analysis in multiphase fluid-flow reservoir engineeringap plications using TOUGH-FLAC  

DOE Green Energy (OSTI)

This paper describes and demonstrates the use of the coupledTOUGH-FLAC simulator for geomechanical shear-slip (failure) analysis inmultiphase fluid-flow reservoir-engineering applications. Two approachesfor analyzing shear-slip are described, one using continuum stress-strainanalysis and another using discrete fault analysis. The use of shear-slipanalysis in TOUGH-FLAC is demonstrated on application examples related toCO2 sequestration and geothermal energy extraction. In the case of CO2sequestration, the shear-slip analysis is used to evaluate maximumsustainable CO2-injection pressure under increasing reservoir pressure,whereas in the case of geothermal energy extraction, the shear-slipanalysis is used to study induced seismicity during steam productionunder decreasing reservoir pressure and temperature.

Rutqvist, Jonny; Birkholzer, Jens; Cappa, Frederic; Oldenburg,Curt; Tsang, Chin-Fu

2006-01-15T23:59:59.000Z

115

TEMPEST: A computer code for three-dimensional analysis of transient fluid dynamics  

SciTech Connect

TEMPEST (Transient Energy Momentum and Pressure Equations Solutions in Three dimensions) is a powerful tool for solving engineering problems in nuclear energy, waste processing, chemical processing, and environmental restoration because it analyzes and illustrates 3-D time-dependent computational fluid dynamics and heat transfer analysis. It is a family of codes with two primary versions, a N- Version (available to public) and a T-Version (not currently available to public). This handout discusses its capabilities, applications, numerical algorithms, development status, and availability and assistance.

Fort, J.A.

1995-06-01T23:59:59.000Z

116

Computational Fluid Dynamic Analysis of the VHTR Lower Plenum Standard Problem  

DOE Green Energy (OSTI)

The United States Department of Energy is promoting the resurgence of nuclear power in the U. S. for both electrical power generation and production of process heat required for industrial processes such as the manufacture of hydrogen for use as a fuel in automobiles. The DOE project is called the next generation nuclear plant (NGNP) and is based on a Generation IV reactor concept called the very high temperature reactor (VHTR), which will use helium as the coolant at temperatures ranging from 450 C to perhaps 1000 C. While computational fluid dynamics (CFD) has not been used for past safety analysis for nuclear reactors in the U. S., it is being considered for safety analysis for existing and future reactors. It is fully recognized that CFD simulation codes will have to be validated for flow physics reasonably close to actual fluid dynamic conditions expected in normal and accident operational situations. To this end, experimental data have been obtained in a scaled model of a narrow slice of the lower plenum of a prismatic VHTR. The present report presents results of CFD examinations of these data to explore potential issues with the geometry, the initial conditions, the flow dynamics and the data needed to fully specify the inlet and boundary conditions; results for several turbulence models are examined. Issues are addressed and recommendations about the data are made.

Richard W. Johnson; Richard R. Schultz

2009-07-01T23:59:59.000Z

117

Techniques for debugging parallel programs with flowback analysis  

Science Conference Proceedings (OSTI)

Keywords: debugging, flowback analysis, incremental tracing, parallel program, program dependence graph, semantic analysis

Jong-Deok Choi; Barton P. Miller; Robert H. B. Netzer

1991-10-01T23:59:59.000Z

118

Multivariate analysis of remote LIBS spectra using partial least squares, principal component analysis, and related techniques  

Science Conference Proceedings (OSTI)

Quantitative analysis with LIBS traditionally employs calibration curves that are complicated by the chemical matrix effects. These chemical matrix effects influence the LIBS plasma and the ratio of elemental composition to elemental emission line intensity. Consequently, LIBS calibration typically requires a priori knowledge of the unknown, in order for a series of calibration standards similar to the unknown to be employed. In this paper, three new Multivariate Analysis (MV A) techniques are employed to analyze the LIBS spectra of 18 disparate igneous and highly-metamorphosed rock samples. Partial Least Squares (PLS) analysis is used to generate a calibration model from which unknown samples can be analyzed. Principal Components Analysis (PCA) and Soft Independent Modeling of Class Analogy (SIMCA) are employed to generate a model and predict the rock type of the samples. These MV A techniques appear to exploit the matrix effects associated with the chemistries of these 18 samples.

Clegg, Samuel M [Los Alamos National Laboratory; Barefield, James E [Los Alamos National Laboratory; Wiens, Roger C [Los Alamos National Laboratory; Sklute, Elizabeth [MT HOLYOKE COLLEGE; Dyare, Melinda D [MT HOLYOKE COLLEGE

2008-01-01T23:59:59.000Z

119

Two-dimensional Imaging Velocity Interferometry: Technique and Data Analysis  

Science Conference Proceedings (OSTI)

We describe the data analysis procedures for an emerging interferometric technique for measuring motion across a two-dimensional image at a moment in time, i.e. a snapshot 2d-VISAR. Velocity interferometers (VISAR) measuring target motion to high precision have been an important diagnostic in shockwave physics for many years Until recently, this diagnostic has been limited to measuring motion at points or lines across a target. We introduce an emerging interferometric technique for measuring motion across a two-dimensional image, which could be called a snapshot 2d-VISAR. If a sufficiently fast movie camera technology existed, it could be placed behind a traditional VISAR optical system and record a 2d image vs time. But since that technology is not yet available, we use a CCD detector to record a single 2d image, with the pulsed nature of the illumination providing the time resolution. Consequently, since we are using pulsed illumination having a coherence length shorter than the VISAR interferometer delay ({approx}0.1 ns), we must use the white light velocimetry configuration to produce fringes with significant visibility. In this scheme, two interferometers (illuminating, detecting) having nearly identical delays are used in series, with one before the target and one after. This produces fringes with at most 50% visibility, but otherwise has the same fringe shift per target motion of a traditional VISAR. The 2d-VISAR observes a new world of information about shock behavior not readily accessible by traditional point or 1d-VISARS, simultaneously providing both a velocity map and an 'ordinary' snapshot photograph of the target. The 2d-VISAR has been used to observe nonuniformities in NIF related targets (polycrystalline diamond, Be), and in Si and Al.

Erskine, D J; Smith, R F; Bolme, C; Celliers, P; Collins, G

2011-03-23T23:59:59.000Z

120

An evaluation of wind turbine blade cross section analysis techniques.  

SciTech Connect

The blades of a modern wind turbine are critical components central to capturing and transmitting most of the load experienced by the system. They are complex structural items composed of many layers of fiber and resin composite material and typically, one or more shear webs. Large turbine blades being developed today are beyond the point of effective trial-and-error design of the past and design for reliability is always extremely important. Section analysis tools are used to reduce the three-dimensional continuum blade structure to a simpler beam representation for use in system response calculations to support full system design and certification. One model simplification approach is to analyze the two-dimensional blade cross sections to determine the properties for the beam. Another technique is to determine beam properties using static deflections of a full three-dimensional finite element model of a blade. This paper provides insight into discrepancies observed in outputs from each approach. Simple two-dimensional geometries and three-dimensional blade models are analyzed in this investigation. Finally, a subset of computational and experimental section properties for a full turbine blade are compared.

Paquette, Joshua A.; Griffith, Daniel Todd; Laird, Daniel L.; Resor, Brian Ray

2010-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Development of Geothermal Binary Cycle Working Fluid Properties Information and Analysis of Cycles  

DOE Green Energy (OSTI)

The research discussed in this report was performed at the University of Oklahoma during the period January 1, 1979 through December 31, 1979. Efforts were directed principally to the following tasks: (1) comparisons of mixture and pure fluid cascade cycles, (2) development of guidelines for working fluid selection for single boiler cycles, (3) continued evaluation of mixtures as working fluids, (4) working fluid thermophysical property correlation and presentations of properties information.

Starling, Kenneth E.; Iqbal, K.Z.; Malik, Z.I.; Chu, C.T.; Ramaswamy, S.; Kumar, K.H.; Lee, T. J.; Brule, M.R.; Aly, F.; Brunsman, K.J.; Plumb, P.

1979-12-31T23:59:59.000Z

122

Frequency response analysis of fluid control systems for parabolic trough solar collectors  

DOE Green Energy (OSTI)

Previous studies of solar collector fluid control systems have utilized computer simulations of collector and piping dynamics to evaluate stability and response characteristics. To obtain reasonable simulation accuracy requires substantial computer memory and time, and is well beyond the capability of small desk-top computers. Here a linearized steady state frequency response is derived for parabolic trough collectors and for connecting piping, which can be used in standard gain-phase analyses to evaluate system stability and closed loop frequency response. The frequency response characteristics of a typical collector string and piping are used in a gain-phase analysis to get some insight into the effect on system stability of various system parameters such as controller gain, sensor and controller time constants, and sensor location.

Schindwolf, R.

1980-01-01T23:59:59.000Z

123

Pointer analysis for Java programs : novel techniques and applications  

E-Print Network (OSTI)

This dissertation presents a pointer analysis for Java programs, together with several practical analysis applications. For each program point, the analysis is able to construct a points-to graph that describes how local ...

S?lcianu, Alexandru D. (Alexandru Doru), 1975-

2006-01-01T23:59:59.000Z

124

Downhole Fluid Sampling | Open Energy Information  

Open Energy Info (EERE)

Downhole Fluid Sampling Downhole Fluid Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Downhole Fluid Sampling Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Well Testing Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Water composition and source of fluids. Gas composition and source of fluids. Thermal: Water temperature. Distinguish magmatic/mantle heat inputs. Can be used to estimate reservoir fluid temperatures. Dictionary.png Downhole Fluid Sampling: Downhole fluid sampling is done to characterize the chemical, thermal, or hydrological properties of a surface or subsurface aqueous system. Downhole

125

Preliminary Analysis of Grande Ronde Basalt Formation Flow Top Transmissivity as it Relates to Assessment and Site Selection Applications for Fluid/Energy Storage and Sequestration Projects  

SciTech Connect

Preliminary Analysis of Grande Ronde Basalt Formation Flow Top Transmissivity as it Relates to Assessment and Site Selection Applications for Fluid/Energy Storage and Sequestration Projects

Spane, Frank A.

2013-04-29T23:59:59.000Z

126

Improved techniques for fluid diversion in oil recovery. Second annual report, October 1, 1993--September 30, 1994  

SciTech Connect

This project is directed at reducing water production and increasing oil recovery efficiency. Today, the cost of water disposal is typically between $0.25 and $0.50 per bbl. Therefore, there is a tremendous economic incentive to reduce water production if that can be accomplished without sacrificing hydrocarbon production. Environmental considerations also provide a significant incentive to reduce water production during oilfield operations. This three-year project has two technical objectives. The first objective is to compare the effectiveness of gels in fluid diversion (water shutoff) with those of other types of processes. Several different types of fluid-diversion processes are being compared, including those using gels, foams, emulsions, and particulates. The ultimate goals of these comparisons are to (1) establish which of these processes are most effective in a given application and (2) determine whether aspects of one process can be combined with those of other processes to improve performance. Analyses and experiments are being performed to verify which materials are the most effective in entering and blocking high-permeability zones. The second objective of the project is to identify the mechanisms by which materials (particularly gels) selectively reduce permeability to water more than to oil. Topics covered in this report include (1) comparisons of the use of gels, foams, emulsions, and particulates as blocking agents; (2) propagation of aluminum-citrate-HPAM gels through porous rock; (3) gel properties in fractured systems; (4) gel placement in unfractured anisotropic flow systems; and (5) an investigation of why some gels can reduce water permeability more than oil permeability.

Seright, R.S.

1995-03-01T23:59:59.000Z

127

Drilling Techniques | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Drilling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Drilling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(20) Exploration Technique Information Exploration Group: Drilling Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Identify lithology and mineralization, provide core samples and rock cuttings Stratigraphic/Structural: Retrieved samples can be used to identify stratigraphy and structural features such as fracture networks or faults Hydrological: -Water samples can be used for geochemical analysis -Fluid pressures can be used to estimate flow rates

128

Natural Circulation and Linear Stability Analysis for Liquid-Metal Reactors with the Effect of Fluid Axial Conduction  

SciTech Connect

The effect of fluid axial thermal conduction on one-dimensional liquid metal natural circulation and its linear stability was performed through nondimensional analysis, steady-state assessment, and linear perturbation evaluation. The Nyquist criterion and a root-search method were employed to find the linear stability boundary of both forward and backward circulations. The study provided a relatively complete analysis method for one-dimensional natural circulation problems with the consideration of fluid axial heat conduction. The results suggest that fluid axial heat conduction in a natural circulation loop should be considered only when the modified Peclet number is {approx}1 or less, which is significantly smaller than the practical value of a lead liquid metal-cooled reactor.

Piyush Sabharwall; Qiao Wu; James J. Sienicki

2012-06-01T23:59:59.000Z

129

Rapid analysis of steels using laser-based techniques  

SciTech Connect

Based on the data obtained by this study, we conclude that laser-based techniques can be used to provide at least semi-quantitative information about the elemental composition of molten steel. Of the two techniques investigated here, the Sample-Only method appears preferable to the LIBS (laser-induced breakdown spectroscopy) method because of its superior analytical performance. In addition, the Sample-Only method would probably be easier to incorporate into a steel plant environment. However, before either technique can be applied to steel monitoring, additional research is needed.

Cremers, D.A.; Archuleta, F.L.; Dilworth, H.C.

1985-01-01T23:59:59.000Z

130

African Easterly Waves during 2004Analysis Using Objective Techniques  

Science Conference Proceedings (OSTI)

African easterly waves (AEWs) are identified in numerical model analyses using an objective technique based on the 700-hPa streamfunction field. This method has been developed to (i) reduce the amount of manual data interpretation, (ii) reduce ...

Gareth Berry; Chris Thorncroft; Tim Hewson

2007-04-01T23:59:59.000Z

131

Engineering product usability: a review and analysis techniques  

Science Conference Proceedings (OSTI)

This paper presents the need and importance of usability engineering, usability-related facts and figures, and a total of eleven usability analysis methods. Keywords: analysis methods, computer, human error, human factors, software, usability, usability engineering

B. S. Dhillon

2005-03-01T23:59:59.000Z

132

Weighted graph comparison techniques for brain connectivity analysis  

Science Conference Proceedings (OSTI)

The analysis of brain connectivity is a vast field in neuroscience with a frequent use of visual representations and an increasing need for visual analysis tools. Based on an in-depth literature review and interviews with neuroscientists, we explore ... Keywords: brain connectivity analysis, brain connectivity visualization, graph comparison

Basak Alper; Benjamin Bach; Nathalie Henry Riche; Tobias Isenberg; Jean-Daniel Fekete

2013-04-01T23:59:59.000Z

133

Measurement uncertainty analysis techniques applied to PV performance measurements  

DOE Green Energy (OSTI)

The purpose of this presentation is to provide a brief introduction to measurement uncertainty analysis, outline how it is done, and illustrate uncertainty analysis with examples drawn from the PV field, with particular emphasis toward its use in PV performance measurements. The uncertainty information we know and state concerning a PV performance measurement or a module test result determines, to a significant extent, the value and quality of that result. What is measurement uncertainty analysis It is an outgrowth of what has commonly been called error analysis. But uncertainty analysis, a more recent development, gives greater insight into measurement processes and tests, experiments, or calibration results. Uncertainty analysis gives us an estimate of the I interval about a measured value or an experiment's final result within which we believe the true value of that quantity will lie. Why should we take the time to perform an uncertainty analysis A rigorous measurement uncertainty analysis: Increases the credibility and value of research results; allows comparisons of results from different labs; helps improve experiment design and identifies where changes are needed to achieve stated objectives (through use of the pre-test analysis); plays a significant role in validating measurements and experimental results, and in demonstrating (through the post-test analysis) that valid data have been acquired; reduces the risk of making erroneous decisions; demonstrates quality assurance and quality control measures have been accomplished; define Valid Data as data having known and documented paths of: Origin, including theory; measurements; traceability to measurement standards; computations; uncertainty analysis of results.

Wells, C.

1992-10-01T23:59:59.000Z

134

Healthful LipidsChapter 5 Analysis of Lipids by New Hyphenated Techniques  

Science Conference Proceedings (OSTI)

Healthful Lipids Chapter 5 Analysis of Lipids by New Hyphenated Techniques Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AOCS Press Downloadable pdf of Chapter 5 Analysis of Lipids by

135

Measurement uncertainty analysis techniques applied to PV performance measurements  

DOE Green Energy (OSTI)

The purpose of this presentation is to provide a brief introduction to measurement uncertainty analysis, outline how it is done, and illustrate uncertainty analysis with examples drawn from the PV field, with particular emphasis toward its use in PV performance measurements. The uncertainty information we know and state concerning a PV performance measurement or a module test result determines, to a significant extent, the value and quality of that result. What is measurement uncertainty analysis? It is an outgrowth of what has commonly been called error analysis. But uncertainty analysis, a more recent development, gives greater insight into measurement processes and tests, experiments, or calibration results. Uncertainty analysis gives us an estimate of the I interval about a measured value or an experiment`s final result within which we believe the true value of that quantity will lie. Why should we take the time to perform an uncertainty analysis? A rigorous measurement uncertainty analysis: Increases the credibility and value of research results; allows comparisons of results from different labs; helps improve experiment design and identifies where changes are needed to achieve stated objectives (through use of the pre-test analysis); plays a significant role in validating measurements and experimental results, and in demonstrating (through the post-test analysis) that valid data have been acquired; reduces the risk of making erroneous decisions; demonstrates quality assurance and quality control measures have been accomplished; define Valid Data as data having known and documented paths of: Origin, including theory; measurements; traceability to measurement standards; computations; uncertainty analysis of results.

Wells, C.

1992-10-01T23:59:59.000Z

136

An analysis of some time-sharing techniques  

Science Conference Proceedings (OSTI)

The effectiveness of certain time-sharing techniques such as program relocation, disk rotational delay minimization, and swap volume minimization is investigated. Summary data is presented, and the findings are discussed. The vehicle for this investigation ... Keywords: B6500, bulk core usage, operating system model, relocation, rotational delay minimization, simulation, swap volume minimization, system simulation, time-sharing

Norman R. Nielsen

1971-02-01T23:59:59.000Z

137

Using Computational Fluid Dynamics Techniques to Define the Hydraulic Zone of Influence of Cooling Water Intake Structures  

Science Conference Proceedings (OSTI)

In the past, the hydraulic zone of influence (HZI) of a cooling water intake structure (CWIS) has been inferred from the results of field sampling programs. Today, however, advanced hydraulic modeling techniques can be used to define the HZI of a CWIS using personal computers. This report provides information that can be used to quantitatively or qualitatively describe the "area of influence" or HZI of a power plant CWIS, as required under new U.S. Environmental Protection Agency (EPA) Clean Water Act (C...

2004-07-26T23:59:59.000Z

138

VLBI FOR GRAVITY PROBE B. IV. A NEW ASTROMETRIC ANALYSIS TECHNIQUE AND A COMPARISON WITH RESULTS FROM OTHER TECHNIQUES  

Science Conference Proceedings (OSTI)

When very long baseline interferometry (VLBI) observations are used to determine the position or motion of a radio source relative to reference sources nearby on the sky, the astrometric information is usually obtained via (1) phase-referenced maps or (2) parametric model fits to measured fringe phases or multiband delays. In this paper, we describe a 'merged' analysis technique which combines some of the most important advantages of these other two approaches. In particular, our merged technique combines the superior model-correction capabilities of parametric model fits with the ability of phase-referenced maps to yield astrometric measurements of sources that are too weak to be used in parametric model fits. We compare the results from this merged technique with the results from phase-referenced maps and from parametric model fits in the analysis of astrometric VLBI observations of the radio-bright star IM Pegasi (HR 8703) and the radio source B2252+172 nearby on the sky. In these studies we use central-core components of radio sources 3C 454.3 and B2250+194 as our positional references. We obtain astrometric results for IM Peg with our merged technique even when the source is too weak to be used in parametric model fits, and we find that our merged technique yields astrometric results superior to the phase-referenced mapping technique. We used our merged technique to estimate the proper motion and other astrometric parameters of IM Peg in support of the NASA/Stanford Gravity Probe B mission.

Lebach, D. E.; Ratner, M. I.; Shapiro, I. I. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Bartel, N.; Bietenholz, M. F.; Lederman, J. I.; Ransom, R. R. [Department of Physics and Astronomy, York University, 4700 Keele Street, Toronto, ON M3J 1P3 (Canada); Campbell, R. M. [Joint Institute for VLBI in Europe, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo (Netherlands); Gordon, D. [NVI Inc./NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Lestrade, J.-F. [Observatoire de Paris, Centre National de la Recherche Scientifique, 77 Av. Denfert Rochereau, 75014 Paris (France)

2012-07-01T23:59:59.000Z

139

Application of the normalization data analysis technique for single specimen R-curve determination  

SciTech Connect

The authors conclude that the normalization technique for single specimen R-curve and J{sub IC} determination can be very effective. Much like EPD, this technique requires some user interpretation/judgement during data analysis and may be difficult to standardize or fully automate even with strict analysis rules.

Porr, W.C.; Mills, W.J.

1999-03-01T23:59:59.000Z

140

General Approach To Materials Classification Using Neutron Analysis Techniques  

Science Conference Proceedings (OSTI)

The 'neutron in, gamma out' method of elemental analysis has been known and used in many applications as an elemental analysis tool. This method is non-intrusive, non-destructive, fast and precise. This set of advantages makes neutron analysis attractive for even wider variety of uses beyond simple elemental analysis. The question that is addressed within this study is under what conditions neutron analysis can be used to differentiate materials of interest from a group or class of materials in the face of knowing that what is truly of interest is the molecular content of any sample under interrogation. Purpose of the study was to develop a neutron-based scanner for rapid differentiation of classes of materials sealed in small bottles. Developed scanner employs D-T neutron generator as a neutron source and HPGe gamma detectors. Materials can be placed into classes by many different properties. However, neutron analysis method can be used only few of them, such as elemental content, stoichiometric ratios and density of the scanned material. Set of parameters obtainable through neutron analysis serves as a basis for a hyperspace, where each point corresponds to a certain scanned material. Sub-volumes of the hyperspace correspond to different classes of materials. One of the most important properties of the materials are stoichiometric ratios of the elements comprising the materials. Constructing an algorithm for converting the observed gamma ray counts into quantities of the elements in the scanned sample is a crucial part of the analysis. Gamma rays produced in both fast inelastic scatterings and neutron captures are considered. Presence of certain elements in materials, such as hydrogen and chlorine can significantly change neutron dynamics within the sample, and, in turn, characteristic gamma lines development. These effects have been studied and corresponding algorithms have been developed to account for them.

Solovyev, Vladimir G. [Saint Gobain Crystals and Detectors, 12345 Kinsman Rd, Newbury, OH 44124 (United States); Koltick, David S. [Department of Physics, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907 (United States)

2006-03-13T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Analysis and macroscopic limit of a one-dimensional model for aging fluids  

E-Print Network (OSTI)

We study a one-dimensional equation arising in the multiscale modeling of some non-Newtonian fluids. At a given shear rate, the equation provides the instantaneous mesoscopic response of the fluid, allowing to compute the corresponding stress. In a simple setting, we study the well-posedness of the equation and next the long-time behavior of its solution. In the limit of a response of the fluid much faster than the time variations of the ambient shear rate, we derive some equivalent macroscopic differential equations that relate the shear rate and the stress. Our analytical conclusions are confronted to some numerical experiments. The latter quantitatively confirm our derivations.

David Benoit; Claude Le Bris; Tony Lelivre

2013-10-15T23:59:59.000Z

142

Geospatial Products and Techniques at the Center for Transportation Analysis  

Science Conference Proceedings (OSTI)

This paper highlights geospatial science-related innovations and developments conducted by the Center for Transportation Analysis (CTA) at the Oak Ridge National Laboratory. CTA researchers have been developing integrated inter-modal transportation solutions through innovative and cost-effective research and development for many years. Specifically, this paper profiles CTA-developed Geographic Information System (GIS) products that are publicly available. Examples of these GIS-related products include: the CTA Transportation Networks; GeoFreight system; and the web-based Multi-Modal Routing Analysis System. In addition, an application on assessment of railroad Hazmat routing alternatives is also discussed.

Chin, Shih-Miao [ORNL; Hwang, Ho-Ling [ORNL; Peterson, Bruce E [ORNL

2008-01-01T23:59:59.000Z

143

Comparative analysis of evaluation techniques for transport policies  

Science Conference Proceedings (OSTI)

The objective of this paper is to examine and compare the use of a number of policy evaluation tools, which can be used to measure the impact of transport policies and programmes as part of a strategic environmental assessment (SEA) or sustainability appraisal. The evaluation tools that were examined include cost-benefit analysis (CBA), cost-effectiveness analysis (CEA) and multi-criteria decision analysis (MCDA). It was concluded that both CEA and CBA are useful for estimating the costs and/or benefits associated with transport policies but are constrained by the difficulty in quantifying non-market impacts and monetising total costs and benefits. Furthermore, CEA is limited to identifying the most 'cost-effective policy' for achieving a single, narrowly defined objective, usually greenhouse gas (GHG) reduction and is, therefore, not suitable for evaluating policy options with ancillary costs or a variety of potential benefits. Thus, CBA or CEA evaluation should be complemented by a complete environmental and socio-economic impact assessment approach such as MCDA. This method allows for participatory analysis and qualitative assessment but is subject to caveats such as subjectivity and value-laden judgments.

Browne, David, E-mail: davidbrowne2@gmail.co [Department of Civil, Structural and Environmental Engineering, Trinity College, Dublin (TCD), Dublin 2 (Ireland); Ryan, Lisa, E-mail: Lisa.RYAN@iea.or [International Energy Agency (IEA), Paris (France)

2011-04-15T23:59:59.000Z

144

Analysis of pulse-shape discrimination techniques for BC501A using GHz digital signal processing  

SciTech Connect

A comparison study of pulse-shape analysis techniques was conducted for a BC501A scintillator using digital signal processing (DSP). In this study, output signals from a preamplifier were input directly into a 1 GHz analog-to-digital converter. The digitized data obtained with this method was post-processed for both pulse-height and pulse-shape information. Several different analysis techniques were evaluated for neutron and gamma-ray pulse-shape discrimination. It was surprising that one of the simplest and fastest techniques resulted in some of the best pulse-shape discrimination results. This technique, referred to here as the Integral Ratio technique, was able to effectively process several thousand detector pulses per second. This paper presents the results and findings of this study for various pulse-shape analysis techniques with digitized detector signals.

Rooney, B. D. (Brian D.); Dinwiddie, D. R. (Derek R.); Nelson, M. A. (Mark A.); Rawool-Sullivan, Mohini W.

2001-01-01T23:59:59.000Z

145

Time-frequency resolved ultrafast spectroscopy techniques using wavelet analysis  

E-Print Network (OSTI)

New experimental techniques based on non-linear ultrafast spectroscopies have been developed over the last few years, and have been demonstrated to provide powerful probes of quantum dynamics in different types of molecular aggregates, including both natural and artificial light harvesting complexes. Fourier transform-based spectroscopies have been particularly successful, yet 'complete' spectral information normally necessitates the loss of all information on the temporal sequence of events in a signal. This information though is particularly important in transient or multi-stage processes, in which the spectral decomposition of the data evolves in time. By going through several examples of ultrafast quantum dynamics, we demonstrate that the use of wavelets provide an efficient and accurate way to simultaneously acquire both temporal and frequency information about a signal, and argue that this greatly aids the elucidation and interpretation of physical process responsible for non-stationary spectroscopic features, such as those encountered in coherent excitonic energy transport.

Javier Prior; Enrique Castro; Alex W. Chin; Javier Almeida; Susana F. Huelga; Martin B. Plenio

2013-08-21T23:59:59.000Z

146

In Situ NMR Analysis of Fluids Contained in Sedimentary Rock Thomas M. de Swiet,* Marco Tomaselli,* Martin D. Hurlimann, and Alexander Pines*  

E-Print Network (OSTI)

In Situ NMR Analysis of Fluids Contained in Sedimentary Rock Thomas M. de Swiet,* Marco Tomaselli of pore fluids may be obtained in situ by magic angle spinning (MAS) nuclear magnetic resonance (NMR), which is normally used for solid samples. 1 H MAS­NMR spectra of water and crude oil in Berea sandstone

Pines, Alexander

147

Methods for magnetic resonance analysis using magic angle technique  

DOE Patents (OSTI)

Methods of performing a magnetic resonance analysis of a biological object are disclosed that include placing the object in a main magnetic field (that has a static field direction) and in a radio frequency field; rotating the object at a frequency of less than about 100 Hz around an axis positioned at an angle of about 54.degree.44' relative to the main magnetic static field direction; pulsing the radio frequency to provide a sequence that includes a phase-corrected magic angle turning pulse segment; and collecting data generated by the pulsed radio frequency. In particular embodiments the method includes pulsing the radio frequency to provide at least two of a spatially selective read pulse, a spatially selective phase pulse, and a spatially selective storage pulse. Further disclosed methods provide pulse sequences that provide extended imaging capabilities, such as chemical shift imaging or multiple-voxel data acquisition.

Hu, Jian Zhi (Richland, WA); Wind, Robert A. (Kennewick, WA); Minard, Kevin R. (Kennewick, WA); Majors, Paul D. (Kennewick, WA)

2011-11-22T23:59:59.000Z

148

Fluid bed adsorption of carbon dioxide on immobilized polyethyenimine (PEI): kinetic analysis and breakthrough behavior  

Science Conference Proceedings (OSTI)

The adsorption of carbon dioxide (CO{sub 2}) by immobilized polyethylenimine (PEI) on mesoporous silica was investigated in a fluid bed. The tests were performed to determine breakthrough behavior with varying bed temperature, flow rates and feed concentrations. Experimental breakthrough curves were analyzed using a theoretical 1D model developed by Bohart and Adams. The results showed that Bohart-Adams model was suitable for the normal description of breakthrough curve for the temperature ranges of 40-90{degree}C. The maximum capacity increased with temperature up to 70{degree}C and then decreased. The adsorption rate constant exhibited a negative temperature dependence decreasing as the temperature increased. Parameters characteristic of a fluid bed adsorber were inferred from these breakthrough curves including the breakthrough time, saturation time, critical reactor length, and length of mass transfer zone LMTZ. These parameters can be used to design fluid bed adsorption system without resolving the mechanistic contributions of dispersion, mixing, and intraparticle diffusion.

Monazam, Esmail R.; Spenik,, James; Shadle, Lawrence J.

2013-01-01T23:59:59.000Z

149

Energy stability analysis for a hybrid fluid-kinetic plasma model  

E-Print Network (OSTI)

In plasma physics, a hybrid fluid-kinetic model is composed of a magnetohydrodynamics (MHD) part that describes a bulk fluid component and a Vlasov kinetic theory part that describes an energetic plasma component. While most hybrid models in the plasma literature are non-Hamiltonian, this paper investigates a recent Hamiltonian variant in its two-dimensional configuration. The corresponding Hamiltonian structure is described along with its Casimir invariants. Then, the energy-Casimir method is used to derive explicit sufficient stability conditions, which imply a stable spectrum and suggest nonlinear stability.

Philip J. Morrison; Emanuele Tassi; Cesare Tronci

2013-06-11T23:59:59.000Z

150

Computational analysis of fluid flow and zonal deposition in ferrocyanide single-shell tanks. Ferrocyanide Safety Program  

SciTech Connect

Safety of single-shell tanks containing ferrocyanide wastes is of concern. Ferrocyanide in the presence of an oxidizer such as NaNO{sub 3} or NaNO{sub 2} is explosively combustible when concentrated and heated. Evaluating the processes that could affect the fuel content of waste and distribution of the tank heat load is important. Highly alkaline liquid wastes were transferred in and out of the tanks over several years. Since Na{sub 2}NiFe(CN){sub 6} is much more soluble in alkaline media, the ferrocyanide could be dispersed from the tank more easily. If Cs{sub 2}NiFe(CN){sub 6} or CsNaNiFe(CN){sub 6} are also soluble in alkaline media, solubilization and transport of {sup 137}Cs could also occur. Transporting this heat generating radionuclide to a localized area in the tanks is a potential mechanism for generating a ``hot spot.`` Fluid convection could potentially speed the transport process considerably over aqueous diffusion alone. A stability analysis was performed for a dense fluid layer overlying a porous medium saturated by a less dense fluid with the finding that the configuration is unconditionally unstable and independent of the properties of the porous medium or the magnitude of the fluid density difference. A parametric modeling study of the buoyancy-driven flow due to a thermal gradient was combusted to establish the relationship between the waste physical and thermal properties and natural convection heat transfer. The effects of diffusion and fluid convection on the redistribution of the {sup 137}Cs were evaluated with a 2-D coupled heat and mass transport model. The maximum predicted temperature rise associated with the formation of zones was only 5{degrees}C and thus is of no concern in terms of generating a localized ``hot spot.``

McGrail, B.P.; Trent, D.S.; Terrones, G.; Hudson, J.D.; Michener, T.E.

1993-10-01T23:59:59.000Z

151

A Comparison of Analysis and Forecast Correction Techniques:Impact of Negative Dissipation  

Science Conference Proceedings (OSTI)

The impact of negative dissipation on posttime analysis and forecast correction techniques is examined in a simplified context. The experiments are conducted using a three-level quasigeostrophic model (with a nonsingular tangent propagator matrix)...

Carolyn A. Reynolds

1999-11-01T23:59:59.000Z

152

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 17 Fat Replacers: An Overview  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 17 Fat Replacers: An Overview Methods and Analyses eChapters Methods - Analyses Books Downloadable pdf of Chapter 17 Fat Replacers: An Overview from

153

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 4 LC/MS and Chiral Separation  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 4 LC/MS and Chiral Separation Methods and Analyses eChapters Methods - Analyses Books AOCS Press Downloadable pdf of Chapter 4 LC/MS and Chiral S

154

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 19 Waxes and Sterols: Structures and Chemistry  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 19 Waxes and Sterols: Structures and Chemistry Methods and Analyses eChapters Methods - Analyses Books AOCS Press Downloadable pdf of Chapter 19

155

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 5 LC/MS and Lipid Oxidation  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 5 LC/MS and Lipid Oxidation Methods and Analyses eChapters Methods - Analyses Books Downloadable pdf of Chapter 5 LC/MS and Lipid Oxidation from

156

Analysis of Geostationary Satellite Imagery Using a Temporal-Differencing Technique  

Science Conference Proceedings (OSTI)

A new and innovative cloud analysis technique has been developed that exploits the temporal information content of geostationary satellite imagery. The algorithm is designed to identify new cloud development and moving cloud systems by comparing ...

Robert Paul d'Entremont; Gary B. Gustafson

2003-01-01T23:59:59.000Z

157

A Lagrangian Objective Analysis Technique for Assimilating In Situ Observations with Multiple-Radar-Derived Airflow  

Science Conference Proceedings (OSTI)

A new Lagrangian analysis technique is developed to assimilate in situ boundary layer measurements using multi-Doppler-derived wind fields, providing output fields of water vapor mixing ratio, potential temperature, and virtual potential ...

Conrad L. Ziegler; Michael S. Buban; Erik N. Rasmussen

2007-07-01T23:59:59.000Z

158

Fluid Resistance Analysis of Sand Control Slotted Liner with Compound Cavity Based on Fluent  

Science Conference Proceedings (OSTI)

Slotted liners have been used for many years to provide sand control in many oil industry applications. They are commonly applied in reservoirs that produce high-viscosity oil from horizontal wells with unconsolidated, high-permeability sands. However, ... Keywords: slotted liner, newly-designed slot, Fluid resistance

Hang Li; Yonghong Liu; Jianmin Ma; Xinfang Wei

2010-03-01T23:59:59.000Z

159

R fluids  

E-Print Network (OSTI)

A theory of collisionless fluids is developed in a unified picture, where nonrotating figures with anisotropic random velocity component distributions and rotating figures with isotropic random velocity component distributions, make adjoints configurations to the same system. R fluids are defined and mean and rms angular velocities and mean and rms tangential velocity components are expressed, by weighting on the moment of inertia and the mass, respectively. The definition of figure rotation is extended to R fluids. The generalized tensor virial equations are formulated for R fluids and further attention is devoted to axisymmetric configurations where, for selected coordinate axes, a variation in figure rotation has to be counterbalanced by a variation in anisotropy excess and vice versa. A microscopical analysis of systematic and random motions is performed under a few general hypotheses, by reversing the sign of tangential or axial velocity components of an assigned fraction of particles, leaving the distribution function and other parameters unchanged (Meza 2002). The application of the reversion process to tangential velocity components, implies the conversion of random motion rotation kinetic energy into systematic motion rotation kinetic energy. The application of the reversion process to axial velocity components, implies the conversion of random motion translation kinetic energy into systematic motion translation kinetic energy, and the loss related to a change of reference frame is expressed in terms of systematic (imaginary) motion rotation kinetic energy. A procedure is sketched for deriving the spin parameter distribution (including imaginary rotation) from a sample of observed or simulated large-scale collisionless fluids i.e. galaxies and galaxy clusters.

R. Caimmi

2007-10-20T23:59:59.000Z

160

Coupled computational fluid dynamics and heat transfer analysis of the VHTR lower plenum.  

SciTech Connect

The very high temperature reactor (VHTR) concept is being developed by the US Department of Energy (DOE) and other groups around the world for the future generation of electricity at high thermal efficiency (> 48%) and co-generation of hydrogen and process heat. This Generation-IV reactor would operate at elevated exit temperatures of 1,000-1,273 K, and the fueled core would be cooled by forced convection helium gas. For the prismatic-core VHTR, which is the focus of this analysis, the velocity of the hot helium flow exiting the core into the lower plenum (LP) could be 35-70 m/s. The impingement of the resulting gas jets onto the adiabatic plate at the bottom of the LP could develop hot spots and thermal stratification and inadequate mixing of the gas exiting the vessel to the turbo-machinery for energy conversion. The complex flow field in the LP is further complicated by the presence of large cylindrical graphite posts that support the massive core and inner and outer graphite reflectors. Because there are approximately 276 channels in the VHTR core from which helium exits into the LP and a total of 155 support posts, the flow field in the LP includes cross flow, multiple jet flow interaction, flow stagnation zones, vortex interaction, vortex shedding, entrainment, large variation in Reynolds number (Re), recirculation, and mixing enhancement and suppression regions. For such a complex flow field, experimental results at operating conditions are not currently available. Instead, the objective of this paper is to numerically simulate the flow field in the LP of a prismatic core VHTR using the Sandia National Laboratories Fuego, which is a 3D, massively parallel generalized computational fluid dynamics (CFD) code with numerous turbulence and buoyancy models and simulation capabilities for complex gas flow fields, with and without thermal effects. The code predictions for simpler flow fields of single and swirling gas jets, with and without a cross flow, are validated using reported experimental data and theory. The key processes in the LP are identified using phenomena identification and ranking table (PIRT). It may be argued that a CFD code that accurately simulates simplified, single-effect flow fields with increasing complexity is likely to adequately model the complex flow field in the VHTR LP, subject to a future experimental validation. The PIRT process and spatial and temporal discretizations implemented in the present analysis using Fuego established confidence in the validation and verification (V and V) calculations and in the conclusions reached based on the simulation results. The performed calculations included the helicoid vortex swirl model, the dynamic Smagorinsky large eddy simulation (LES) turbulence model, participating media radiation (PMR), and 1D conjugate heat transfer (CHT). The full-scale, half-symmetry LP mesh used in the LP simulation included unstructured hexahedral elements and accounted for the graphite posts, the helium jets, the exterior walls, and the bottom plate with an adiabatic outer surface. Results indicated significant enhancements in heat transfer, flow mixing, and entrainment in the VHTR LP when using swirling inserts at the exit of the helium flow channels into the LP. The impact of using various swirl angles on the flow mixing and heat transfer in the LP is qualified, including the formation of the central recirculation zone (CRZ), and the effect of LP height. Results also showed that in addition to the enhanced mixing, the swirling inserts result in negligible additional pressure losses and are likely to eliminate the formation of hot spots.

El-Genk, Mohamed S. (University of New Mexico, Albuquerque, NM); Rodriguez, Salvador B.

2010-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Scanning angle Raman spectroscopy: Investigation of Raman scatter enhancement techniques for chemical analysis  

SciTech Connect

This thesis outlines advancements in Raman scatter enhancement techniques by applying evanescent fields, standing-waves (waveguides) and surface enhancements to increase the generated mean square electric field, which is directly related to the intensity of Raman scattering. These techniques are accomplished by employing scanning angle Raman spectroscopy and surface enhanced Raman spectroscopy. A 1064 nm multichannel Raman spectrometer is discussed for chemical analysis of lignin. Extending dispersive multichannel Raman spectroscopy to 1064 nm reduces the fluorescence interference that can mask the weaker Raman scattering. Overall, these techniques help address the major obstacles in Raman spectroscopy for chemical analysis, which include the inherently weak Raman cross section and susceptibility to fluorescence interference.

Meyer, Matthew W. [Ames Laboratory

2013-03-14T23:59:59.000Z

162

Thermal-fluid and electrochemical modeling and performance study of a planar solid oxide electrolysis cell : analysis on SOEC resistances, size, and inlet flow conditions.  

DOE Green Energy (OSTI)

Argonne National Laboratory and Idaho National Laboratory researchers are analyzing the electrochemical and thermal-fluid behavior of solid oxide electrolysis cells (SOECs) for high temperature steam electrolysis using computational fluid dynamics (CFD) techniques. The major challenges facing commercialization of steam electrolysis technology are related to efficiency, cost, and durability of the SOECs. The goal of this effort is to guide the design and optimization of performance for high temperature electrolysis (HTE) systems. An SOEC module developed by FLUENT Inc. as part of their general CFD code was used for the SOEC analysis by INL. ANL has developed an independent SOEC model that combines the governing electrochemical mechanisms based on first principals to the heat transfer and fluid dynamics in the operation of SOECs. The ANL model was embedded into the commercial STAR-CD CFD software, and is being used for the analysis of SOECs by ANL. The FY06 analysis performed by ANL and reported here covered the influence of electrochemical properties, SOEC component resistances and their contributing factors, SOEC size and inlet flow conditions, and SOEC flow configurations on the efficiency and expected durability of these systems. Some of the important findings from the ANL analysis are: (1) Increasing the inlet mass flux while going to larger cells can be a compromise to overcome increasing thermal and current density gradients while increasing the cell size. This approach could be beneficial for the economics of the SOECs; (2) The presence of excess hydrogen at the SOEC inlet to avoid Ni degradation can result in a sizeable decrease in the process efficiency; (3) A parallel-flow geometry for SOEC operation (if such a thing be achieved without sealing problems) yields smaller temperature gradients and current density gradients across the cell, which is favorable for the durability of the cells; (4) Contact resistances can significantly influence the total cell resistance and cell temperatures over a large range of operating potentials. Thus it is important to identify and avoid SOEC stack conditions leading to such high resistances due to poor contacts.

Yildiz, B.; Smith, J.; Sofu, T.; Nuclear Engineering Division

2008-06-25T23:59:59.000Z

163

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 12 Fast GC for Cellular FAME Analysis of Bacteria  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 12 Fast GC for Cellular FAME Analysis of Bacteria Methods and Analyses eChapters Methods - Analyses Books 1FEE4C7C73C70C0CBEFB8C79B2926801 AOCS Press

164

Convergence acceleration techniques in CAD systems for grounding analysis in layered soils  

E-Print Network (OSTI)

by ground rods vertically thrusted in certain places of the substation site. Thus, when a fault conditionConvergence acceleration techniques in CAD systems for grounding analysis in layered soils I a numerical formulation based on the Boundary Element Method for the analysis of grounding systems embedded

Colominas, Ignasi

165

On-Line Dissolved Gas Analysis in High-Pressure Fluid-Filled Cables  

Science Conference Proceedings (OSTI)

Highly reliable underground transmission lines are essential to deliver power consistently. Reliability may be affected as underground laminar dielectric cable circuits age and their condition degenerates. High-pressure fluid-filled (HPFF) pipe-type cable systems have been the preferred high-voltage transmission cable type in North America from the earliest transmission cable installations in the 1930s through the late 1990s and still account for the largest percentage (80%) of installed length. Although...

2009-11-17T23:59:59.000Z

166

SRM -? Fluids  

Science Conference Proceedings (OSTI)

... These reference fluid formulations characterize the behavior of broad ranges of chemically similar fluids; in this way data on propane, for example ...

2012-10-01T23:59:59.000Z

167

Analysis of drilling fluid rheology and tool joint effect to reduce errors in hydraulics calculations  

E-Print Network (OSTI)

This study presents a simplified and accurate procedure for selecting the rheological model which best fits the rheological properties of a given non- Newtonian fluid and introduces five new approaches to correct for tool joint losses from expansion and contraction when hydraulics is calculated. The new approaches are enlargement and contraction (E&C), equivalent diameter (ED), two different (2IDs), enlargement and contraction plus equivalent diameter (E&C+ED), and enlargement and contraction plus two different IDs (E&C+2IDs). In addition to the Newtonian model, seven major non-Newtonian rheological models (Bingham plastic, Power law, API, Herschel-Bulkley, Unified, Robertson and Stiff, and Casson) provide alternatives for selecting the model that most accurately represents the shear-stress/shear-rate relationship for a given non- Newtonian fluid. The project assumes that the model which gives the lowest absolute average percent error (EAAP) between the measured and calculated shear stresses is the best one for a given non-Newtonian fluid. The results are of great importance in achieving correct results for pressure drop and hydraulics calculations and the results are that the API rheological model (RP 13D) provides, in general, the best prediction of rheological behavior for the mud samples considered (EAAP=1.51), followed by the Herschel-Bulkley, Robertson and Stiff, and Unified models. Results also show that corrections with E&C+2IDs and API hydraulics calculation give a good approximation to measured pump pressure with 9% of difference between measured and calculated data.

Viloria Ochoa, Marilyn

2006-08-01T23:59:59.000Z

168

Computational Fluid Dynamics in Support of the SNS Liquid Mercury Thermal-Hydraulic Analysis  

SciTech Connect

Experimental and computational thermal-hydraulic research is underway to support the liquid mercury target design for the Spallation Neutron Source (SNS) facility. The SNS target will be subjected to internal nuclear heat generation that results from pulsed proton beam collisions with the mercury nuclei. Recirculation and stagnation zones within the target are of particular concern because of the likelihood that they will result in local hot spots and diminished heat removal from the target structure. Computational fluid dynamics (CFD) models are being used as a part of this research. Recent improvements to the 3D target model include the addition of the flow adapter which joins the inlet/outlet coolant pipes to the target body and an updated heat load distribution at the new baseline proton beam power level of 2 MW. Two thermal-hydraulic experiments are planned to validate the CFD model.

Siman-Tov, M.; Wendel, M.W.; Yoder, G.L.

1999-11-14T23:59:59.000Z

169

A Robust Four-Fluid Transient Flow Simulator as an Analysis and Decision Making Tool for Dynamic Kill Operation  

E-Print Network (OSTI)

The worst scenario of drilling operation is blowout which is uncontrolled flow of formation fluid into the wellbore. Blowouts result in environmental damage with potential risk of injuries and fatalities. Although not all blowouts result in disaster, outcomes of blowouts are unknown and should be studied before starting an operation. Plans should be available to prevent blowouts or provide safe and secure ways of controlling the well before the drilling operation starts. The plan should include procedures in case of any blowout incident as a proactive measure. A few commercial softwares are available in the industry for dynamic kill and transient modeling. All models are proprietary and very complex which reduces the flexibility of the program for specific cases. The purpose of this study is to develop a pseudo transient hydraulic simulator for dynamic kill operations. The idea and concept is to consider the flow of each phase as a single phase flow. The summation of hydrostatic and frictional pressure of each phase determines the bottomhole pressure during the dynamic kill operation. The simulator should be versatile and capable of handling special cases that may encounter during blowouts. Some of the main features of the proposed dynamic kill simulator include; quick and robust simulation, fluid properties are corrected for pressure and temperature, sensitivity analysis can be performed through slide bars, and capable of handling variety of wellbore trajectories. The results from the proposed simulator were compared to the result of commercial software, OLGA ABC. The results were in agreement with each other. It is recommended to apply the simulator for operations with required kill fluid volumes of one to two wellbore volumes.

Haghshenas, Arash

2013-05-01T23:59:59.000Z

170

GEOTHERMAL FLUID PROPENE AND PROPANE: INDICATORS OF FLUID | Open Energy  

Open Energy Info (EERE)

FLUID PROPENE AND PROPANE: INDICATORS OF FLUID FLUID PROPENE AND PROPANE: INDICATORS OF FLUID Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: GEOTHERMAL FLUID PROPENE AND PROPANE: INDICATORS OF FLUID Details Activities (1) Areas (1) Regions (0) Abstract: The use of fluid inclusion gas analysis propene/propene ratios is investigated. Ratios of these species are affected by geothermal fluid temperature and oxidations state. Our purpose is to determine if analyses of these species in fluid inclusions these species to can be used to interpret fluid type, history, or process. Analyses were performed on drill cuttings at 20ft intervals from four Coso geothermal wells. Two wells are good producers, one has cold-water entrants in the production zone, and the fourth is a non-producer. The ratios show distinct differences between

171

An interactive parallel coordinates technique applied to a tropical cyclone climate analysis  

Science Conference Proceedings (OSTI)

A highly interactive visual analysis system is presented that is based on an enhanced variant of parallel coordinates - a multivariate information visualization technique. The system combines many variations of previously described visual interaction ... Keywords: Climate study, Geovisualization, Hurricane, Multivariate information visualization, Parallel coordinates

Chad A. Steed; Patrick J. Fitzpatrick; T. J. Jankun-Kelly; Amber N. Yancey; J. Edward Swan II

2009-07-01T23:59:59.000Z

172

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 18 Phospholipids: Structures and Physicochemical Activities  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 18 Phospholipids: Structures and Physicochemical Activities Methods and Analyses eChapters Methods - Analyses Books 7F901335BDC265F6CD236F34E0A1D72F AOCS Press ...

173

Presented at the National Conference on Applied Techniques for Analysis and Management of the  

E-Print Network (OSTI)

1/ Presented at the National Conference on Applied Techniques for Analysis and Management Management (VRM) processes for their own agencies. Training Course The Federal Highway Administration contracted with Jones & Jones, a Seattle planning and design firm, to develop and conduct the training course

Standiford, Richard B.

174

High efficient numerical techniques for the earthing design and the analysis of grounded phenomena  

E-Print Network (OSTI)

" or "earthing" system of an electrical substation comprises all interconnected grounding fa- cilitiesHigh efficient numerical techniques for the earthing design and the analysis of grounded phenomena for the computational design of grounding systems of electrical installations in uniform and layered soils

Colominas, Ignasi

175

Analysis of fluid flow and heat transfer in a rib grit roughened surface solar air heater using CFD  

SciTech Connect

This paper presents the study of fluid flow and heat transfer in a solar air heater by using Computational Fluid Dynamics (CFD) which reduces time and cost. Lower side of collector plate is made rough with metal ribs of circular, square and triangular cross-section, having 60 inclinations to the air flow. The grit rib elements are fixed on the surface in staggered manner to form defined grid. The system and operating parameters studied are: e/D{sub h} = 0.044, p/e = 17.5 and l/s = 1.72, for the Reynolds number range 3600-17,000. To validate CFD results, experimental investigations were carried out in the laboratory. It is found that experimental and CFD analysis results give the good agreement. The optimization of rib geometry and its angle of attack is also done. The square cross-section ribs with 58 angle of attack give maximum heat transfer. The percentage enhancement in the heat transfer for square plate over smooth surface is 30%. (author)

Karmare, S.V. [Department of Mechanical Engineering, Government College Engineering, Karad 415 124, Maharashtra (India); Shivaji University, Kolhapur, Maharashtra (India); Tikekar, A.N. [Department of Mechanical Engineering, Walchand College of Engineering, Sangli (India); Shivaji University, Kolhapur, Maharashtra (India)

2010-03-15T23:59:59.000Z

176

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 8 Analysis of trans-18:1 Fatty Acids by Silver Ion HPLC  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 8 Analysis of trans-18:1 Fatty Acids by Silver Ion HPLC eChapters Methods - Analyses Books AOCS Press Downloadable pdf of Chapter 8 Analysis of tr

177

Fluid-Rock Characterization for NMR Well Logging and Special Core Analysis  

SciTech Connect

The overall objective of this effort is to develop, build and test a high-speed drilling motor that can meet the performance guidelines of the announcement, namely: 'The motors are expected to rotate at a minimum of 10,000 rpm, have an OD no larger than 7 inches and work downhole continuously for at least 100 hours. The motor must have common oilfield thread connections capable of making up to a drill bit and bottomhole assembly. The motor must be capable of transmitting drilling fluid through the motor'. To these goals, APS would add that the motor must be economically viable, in terms of both its manufacturing and maintenance costs, and be applicable to as broad a range of markets as possible. APS has taken the approach of using a system using planetary gears to increase the speed of a conventional mud motor to 10,000 rpm. The mud flow is directed around the outside of the gear train, and a unique flow diversion system has been employed. A prototype of the motor was built and tested in APS's high-pressure flow loop. The motor operated per the model up to {approx}4200 rpm. At that point a bearing seized and the performance was severely degraded. The motor is being rebuilt and will be retested outside of this program.

George Hirasaki; Kishore Mohanty

2007-12-31T23:59:59.000Z

178

Analysis Of Residence Time Distribution Of Fluid Flow By Axial Dispersion Model  

Science Conference Proceedings (OSTI)

Radioactive tracer {sup 82}Br in the form of KBr-82 with activity {+-} 1 mCi has been injected into steel pipeline to qualify the extent dispersion of water flowing inside it. Internal diameter of the pipe is 3 in. The water source was originated from water tank through which the water flow gravitically into the pipeline. Two collimated sodium iodide detectors were used in this experiment each of which was placed on the top of the pipeline at the distance of 8 and 11 m from injection point respectively. Residence time distribution (RTD) curves obtained from injection of tracer are elaborated numerically to find information of the fluid flow properties. The transit time of tracer calculated from the mean residence time (MRT) of each RTD curves is 14.9 s, therefore the flow velocity of the water is 0.2 m/s. The dispersion number, D/uL, for each RTD curve estimated by using axial dispersion model are 0.055 and 0.06 respectively. These calculations are performed after fitting the simulated axial dispersion model on the experiment curves. These results indicated that the extent of dispersion of water flowing in the pipeline is in the category of intermediate.

Sugiharto [Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesha 10, Bandung 40132 (Indonesia); Centre for Applications of Isotopes and Radiation Technology-National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440 (Indonesia); Su'ud, Zaki; Kurniadi, Rizal; Waris, Abdul [Centre for Applications of Isotopes and Radiation Technology-National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440 (Indonesia); Abidin, Zainal [Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesha 10, Bandung 40132 (Indonesia)

2010-12-23T23:59:59.000Z

179

Proteomic analysis of bronchoalveolar lavage fluid proteins from mice infected with Francisella tularensis ssp novicida  

SciTech Connect

Francisella tularensis causes the zoonosis tularemia in humans and is one of the most virulent bacterial pathogens. We utilized a global proteomic approach to characterize protein changes in bronchoalveolar lavage fluid from mice exposed to one of three organisms, F. tularensis ssp. novicida, an avirulent mutant of F. tularensis ssp. novicida (F.t. novicida-mglA); and Pseudomonas aeruginosa. The composition of BALF proteins was altered following infection, including proteins involved in neutrophil activation, oxidative stress and inflammatory responses. Components of the innate immune response were induced including the acute phase response and the complement system, however the timing of their induction varied. Francisella tularensis ssp. novicida infected mice do not appear to have an effective innate immune response in the first hours of infection, however within 24 hours they show an upregulation of innate immune response proteins. This delayed response is in contrast to P. aeruginosa infected animals which show an early innate immune response. Likewise, F.t. novicida-mglA infection initiates an early innate immune response, however this response is dimished by 24 hours. Finally, this study identifies several candidate biomarkers, including Chitinase 3-like-1 (CHI3L1 or YKL-40) and peroxiredoxin 1, that are associated with F. tularensis ssp. novicida but not P. aeruginosa infection.

Varnum, Susan M.; Webb-Robertson, Bobbie-Jo M.; Pounds, Joel G.; Moore, Ronald J.; Smith, Richard D.; Frevert, Charles; Skerret, Shawn J.; Wunschel, David S.

2012-07-06T23:59:59.000Z

180

Performance analysis of developed vegetable-based cutting fluids by D-optimal experimental design in turning process  

Science Conference Proceedings (OSTI)

The aim of this study is to determine the performances of developed vegetable-based cutting fluids VBCFs evaluated as a categorical factor with mineral and semi-synthetic cutting fluids CFs. D-optimal experimental design method in machining was used ... Keywords: D-optimal, EP additive, cutting force, surface roughness, turning, vegetable-based cutting fluids

Emel Kuram; M. Huseyin Cetin; Babur Ozcelik; Erhan Demirbas

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

A Second Look at Neutron Resonance Transmission Analysis as a Spent Fuel NDA Technique  

Science Conference Proceedings (OSTI)

Many different nondestructive analysis techniques are currently being investigated as a part of the United States Department of Energy's Next Generation Safeguards Initiative (NGSI) seeking methods to quantify plutonium in spent fuel. Neutron Resonance Transmission Analysis (NRTA) is one of these techniques. Having first been explored in the mid-1970s for the analysis of individual spent-fuel pins a second look, using advanced simulation and modeling methods, is now underway to investigate the suitability of the NRTA technique for assaying complete spent nuclear fuel assemblies. The technique is similar to neutron time-of-flight methods used for cross-section determinations but operates over only the narrow 0.1-20 eV range where strong, distinguishable resonances exist for both the plutonium (239, 240, 241,242Pu) and uranium (235,236,238U) isotopes of interest in spent fuel. Additionally, in this energy range resonances exists for six important fission products (99Tc, 103Rh, 131Xe, 133Cs, 145Nd, and 152Sm) which provide additional information to support spent fuel plutonium assay determinations. Initial modeling shows excellent agreement with previously published experimental data for measurements of individual spent-fuel pins where plutonium assays were demonstrated to have a precision of 2-4%. Within the simulation and modeling analyses of this project scoping studies have explored fourteen different aspects of the technique including the neutron source, drift tube configurations, and gross neutron transmission as well as the impacts of fuel burn up, cooling time, and fission-product interferences. These results show that NRTA may be a very capable experimental technique for spent-fuel assay measurements. The results suggest sufficient transmission strength and signal differentiability is possible for assays through up to 8 pins. For an 8-pin assay (looking at an assembly diagonally), 64% of the pins in a typical 17 ? 17 array of a pressurized water reactor fuel assembly can be part of a complete transmission assay measurement with high precision. Analysis of rows with up to 12 pins may also be feasible but with diminished precision. Preliminary data analysis of an NRTA simulation has demonstrated the simplicity of the technique.

James W .Sterbentz; David L. Chichester

2011-07-01T23:59:59.000Z

182

A generalized fitting technique for the LIFE2 fatigue analysis code  

DOE Green Energy (OSTI)

The analysis of component fatigue lifetime for a wind energy conversion system (WECS) requires that the component load spectrum be formulated in terms of stress cycles. Typically, these stress cycles are obtained from time series data using a cycle identification scheme. As discussed by many authors, the matrix or matrices of cycle counts that describe the stresses on a turbine are constructed from relatively short, representative samples of time series data. The ability to correctly represent the long-term behavior of the distribution of stress cycles from these representative samples is critical to the analysis of service lifetimes. Several techniques are currently used to convert representative samples to the lifetime cyclic loads on the turbine. There has been recently developed a set of fitting algorithms that is particularly useful for matching the body of the distribution of fatigue stress cycles on a turbine component. Fitting techniques are now incorporated into the LIFE2 fatigue/fracture analysis code for wind turbines. In this paper, the authors provide an overview of the fitting algorithms and describe the pre- and post-count algorithms developed to permit their use in the LIFE2 code. Typical case studies are used to illustrate the use of the technique.

Sutherland, H.J. [Sandia National Labs., Albuquerque, NM (United States). Wind Energy Research Dept.; Wilson, T. [Univ. of New Mexico, Albuquerque, NM (United States). New Mexico Engineering Research Inst.

1996-08-01T23:59:59.000Z

183

FLUID INCLUSION STRATIGRAPHY: NEW METHOD FOR GEOTHERMAL RESERVOIR...  

Open Energy Info (EERE)

(0) Abstract: Fluid Inclusion Stratigraphy (FIS) is a new technique developed for the oil industry in order to map borehole fluids. This method is being studied for application...

184

Frequency response analysis of fluid control systems for parabolic-trough solar collectors  

DOE Green Energy (OSTI)

A linearized steady-state frequency response is derived for parabolic-trough collectors and for connecting piping that can be used in standard gain-phase analyses to evaluate system stability and closed-loop frequency response. The frequency-response characteristics of a typical collector string and piping are used in a gain-phase analysis to get some insight into the effect on system stability of various system parameters such as controller gain, sensor and controller-time constants, and sensor location.

Schindwolf, R.

1981-07-01T23:59:59.000Z

185

Steam Generator Management Program: Thermal-Hydraulic Analysis of a Recirculating Steam Generator Using Commercial Computational Fluid Dynamics Software  

Science Conference Proceedings (OSTI)

The objective of this research was to demonstrate that a commercial computational fluid dynamics code can be set up to model the thermal-hydraulic physics that occur during the operation of a steam generator. Specific complexities in steam-generator thermal-hydraulic modeling include: phase change and two-phase fluid mechanics, hydrodynamic representation of the tube bundle, and thermal coupling between the primary and secondary sides. A commercial computational fluid dynamics code was used without any s...

2012-02-21T23:59:59.000Z

186

Spectrum shape-analysis techniques applied to the Hanford Tank Farms spectral gamma logs  

SciTech Connect

Gamma-ray spectra acquired with high-energy resolution by the spectral gamma logging systems (SGLSs) at the U.S. Department of Energy Hanford Tank Farms, Richland, Washington, are being analyzed for spectral shape characteristics. These spectral shapes, together with a conventional peak-area analysis, enable an analyst not only to identify the gamma-emitting species but also to determine in many instances its spatial distribution around a borehole and to identify the presence of the bremsstrahlung-producing contaminant {sup 90}Sr. The analysis relies primarily on the results of computer simulations of gamma spectra from the predominant radionuclide {sup 137}Cs for various spatial distributions. This log analysis methodology has evolved through an examination of spectral features from spectral logs taken at the SX, BY, and U Tank Farms at the Hanford Site. Initial results determined with this technique show it is possible, in most cases, to distinguish between concentrations of {sup 137}Cs. Work is continuing by experimentally measuring shape factors, incorporating spectrum shape processing in routine log analysis, and extending the techniques to additional radionuclides.

Wilson, R.D.

1997-05-01T23:59:59.000Z

187

MAX Fluid Dynamics facility  

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

MAX Fluid Dynamics facility MAX Fluid Dynamics facility Capabilities Engineering Experimentation Reactor Safety Testing and Analysis Overview Nuclear Reactor Severe Accident Experiments MAX NSTF SNAKE Aerosol Experiments System Components Laser Applications Robots Applications Other Facilities Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr MAX Fluid Dynamics facility Providing high resolution data for development of computational tools that model fluid flow and heat transfer within complex systems such as the core of a nuclear reactor. 1 2 3 4 5 Hot and cold air jets are mixed within a glass tank while laser-based anemometers and a high-speed infrared camera characterize fluid flow and heat transfer behavior. Click on image to view larger size image.

188

Modern Methods for Lipid AnalysisChapter 7 Qualitative and Quantitative Analysis of Triacylglycerolsby Atmospheric Pressure Ionization (APCI and ESI) Mass Spectrometry Techniques  

Science Conference Proceedings (OSTI)

Modern Methods for Lipid Analysis Chapter 7 Qualitative and Quantitative Analysis of Triacylglycerolsby Atmospheric Pressure Ionization (APCI and ESI) Mass Spectrometry Techniques Methods and Analyses eChapters Methods - Analyses Books AO

189

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 9 High-Performance Size-Exclusion Chromatography for Lipid Analysis in Organic Media  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 9 High-Performance Size-Exclusion Chromatography for Lipid Analysis in Organic Media Methods and Analyses eChapters Methods - Analyses Books Downloadable pdf

190

Lipid Analysis and Lipidomics: New Techniques & Application-Ch 6Structural Analysis of Unsaturated Fatty Acid Methyl Ester Isomers with Acetonitrile Covalent Adduct Chemical Ionization  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application-Ch 6 Structural Analysis of Unsaturated Fatty Acid Methyl Ester Isomers with Acetonitrile Covalent Adduct Chemical Ionization Methods and Analyses eChapters Methods - Analyses Book

191

Modeling and analysis of transient vehicle underhood thermo- hydrodynamic events using computational fluid dynamics and high performance computing.  

DOE Green Energy (OSTI)

This work has explored the preliminary design of a Computational Fluid Dynamics (CFD) tool for the analysis of transient vehicle underhood thermo-hydrodynamic events using high performance computing platforms. The goal of this tool will be to extend the capabilities of an existing established CFD code, STAR-CD, allowing the car manufacturers to analyze the impact of transient operational events on the underhood thermal management by exploiting the computational efficiency of modern high performance computing systems. In particular, the project has focused on the CFD modeling of the radiator behavior during a specified transient. The 3-D radiator calculations were performed using STAR-CD, which can perform both steady-state and transient calculations, on the cluster computer available at ANL in the Nuclear Engineering Division. Specified transient boundary conditions, based on experimental data provided by Adapco and DaimlerChrysler were used. The possibility of using STAR-CD in a transient mode for the entire period of time analyzed has been compared with other strategies which involve the use of STAR-CD in a steady-state mode at specified time intervals, while transient heat transfer calculations would be performed for the rest of the time. The results of these calculations have been compared with the experimental data provided by Adapco/DaimlerChrysler and recommendations for future development of an optimal strategy for the CFD modeling of transient thermo-hydrodynamic events have been made. The results of this work open the way for the development of a CFD tool for the transient analysis of underhood thermo-hydrodynamic events, which will allow the integrated transient thermal analysis of the entire cooling system, including both the engine block and the radiator, on high performance computing systems.

Tentner, A.; Froehle, P.; Wang, C.; Nuclear Engineering Division

2004-01-01T23:59:59.000Z

192

Modeling and analysis of transient vehicle underhood thermo - hydrodynamic events using computational fluid dynamics and high performance computing.  

DOE Green Energy (OSTI)

This work has explored the preliminary design of a Computational Fluid Dynamics (CFD) tool for the analysis of transient vehicle underhood thermo-hydrodynamic events using high performance computing platforms. The goal of this tool will be to extend the capabilities of an existing established CFD code, STAR-CD, allowing the car manufacturers to analyze the impact of transient operational events on the underhood thermal management by exploiting the computational efficiency of modern high performance computing systems. In particular, the project has focused on the CFD modeling of the radiator behavior during a specified transient. The 3-D radiator calculations were performed using STAR-CD, which can perform both steady-state and transient calculations, on the cluster computer available at ANL in the Nuclear Engineering Division. Specified transient boundary conditions, based on experimental data provided by Adapco and DaimlerChrysler were used. The possibility of using STAR-CD in a transient mode for the entire period of time analyzed has been compared with other strategies which involve the use of STAR-CD in a steady-state mode at specified time intervals, while transient heat transfer calculations would be performed for the rest of the time. The results of these calculations have been compared with the experimental data provided by Adapco/DaimlerChrysler and recommendations for future development of an optimal strategy for the CFD modeling of transient thermo-hydrodynamic events have been made. The results of this work open the way for the development of a CFD tool for the transient analysis of underhood thermo-hydrodynamic events, which will allow the integrated transient thermal analysis of the entire cooling system, including both the engine block and the radiator, on high performance computing systems.

Froehle, P.; Tentner, A.; Wang, C.

2003-09-05T23:59:59.000Z

193

Hybridized enriched space-time finite element method for analysis of thin-walled structures immersed in generalized Newtonian fluids  

Science Conference Proceedings (OSTI)

The paper addresses the numerical treatment of a specific class of fluid-structure interaction problems: flow-immersed thin structures undergoing considerable motion and deformation. The simultaneous solution procedure uses a mixed-hybrid velocity-based ... Keywords: Embedded thin structure, Enriched space-time approximation, Fluid-structure interaction, Strong coupling

A. Zilian; H. Netuzhylov

2010-11-01T23:59:59.000Z

194

Fluid turbine  

SciTech Connect

A fluid turbine designed for increased power output includes an annular housing provided with a semi-spherical dome for directing incoming fluid flow to impinge on a plurality of rotor blades within the housing fixed to a vertical output shaft. An angle on the order of between 5 to 85/sup 0/, in the direction of rotation of the shaft, exists between the upper (Leading) and lower (Trailing) edges of each blade. The blades are manufactured from a plurality of aerodynamically-shaped, radially spaced ribs covered with a skin. The leading edge of each rib is curved, while the trailing edge is straight. The straight edge of the ribs in each blade approach a vertical plane through the vertical axis of the housing output shaft as the ribs progress radially inwardly towards the output shaft. The housing has fluid exit passages in its base so that deenergized fluid can be quickly flushed from the housing by the downwardly directed flow in combination with the novel blade configuration, which acts as a screw or force multiplier, to expel deenergized fluid. The airfoil shaped ribs also provide the blades with a contour for increasing the fluid velocity on the underside of the blades adjacent the fluid exit passage to aid in expelling the deenergized air while providing the turbine with both impulse and axial-flow, fluid impingement on the blades, resulting in a force vector of increased magnitude. A downwardly directed, substantially semi-cylindrical deflector frame connected to the housing blocks the path of flow of ambient fluid to create a low pressure area beneath the base to aid in continuously drawing fluid into the housing at high velocity to impinge on the rotor blades. The increased flow velocity and force on the blades along with the enhanced removal of deenergized fluid results in increased power output of the turbine.

Lebost, B.A.

1980-11-18T23:59:59.000Z

195

Real-time quadrupole mass spectrometer analysis of gas in borehole fluid samples acquired using the U-Tube sampling methodology  

E-Print Network (OSTI)

industries have long used tagged drilling fluids as anindicator of drilling fluid contamination [Withjack andNon-native fluids introduced by drilling and completion

Freifeld, Barry M.; Trautz, Robert C.

2006-01-01T23:59:59.000Z

196

Cutting Fluids  

Science Conference Proceedings (OSTI)

Table 6   Cutting fluids for aluminum...Table 6 Cutting fluids for aluminum Type of lubricant Principal ingredients Viscosity range Application; maintenance Relative effectiveness Necessary precautions Mineral oils (fatty-additive type preferred) Mineral oil, lard, or neats-foot oil; oleic acid

197

Analysis of hydraulic power transduction in regenerative rotary shock absorbers as function of working fluid kinematic viscosity  

E-Print Network (OSTI)

This investigation seeks to investigate the relationship of kinematic fluid viscosity to the effective power transduction seen by a hydraulic motor. Applications of this research specifically relate to energy recovery from ...

Avadhany, Shakeel N

2009-01-01T23:59:59.000Z

198

HYDRAULIC FLUIDS  

E-Print Network (OSTI)

This fact sheet answers the most frequently asked health questions (FAQs) about hydraulic fluids. For more information, call the ATSDR Information Center at 1-888-422-8737. This fact sheet is one in a series of summaries about hazardous substances and their health effects. This information is important because this substance may harm you. The effects of exposure to any hazardous substance depend on the dose, the duration, how you are exposed, personal traits and habits, and whether other chemicals are present. HIGHLIGHTS: Exposure to hydraulic fluids occurs mainly in the workplace. Drinking certain types of hydraulic fluids can cause death in humans, and swallowing or inhaling certain types of hydraulic fluids has caused nerve damage in animals. Contact with some types of hydraulic fluids can irritate your skin or eyes. These substances have been found in at least 10 of the 1,428 National Priorities List sites identified by the Environmental Protection Agency (EPA). What are hydraulic fluids? (Pronounced ?????????????????) Hydraulic fluids are a large group of liquids made of many kinds of chemicals. They are used in automobile automatic

unknown authors

1997-01-01T23:59:59.000Z

199

Further Evaluation of the Neutron Resonance Transmission Analysis (NRTA) Technique for Assaying Plutonium in Spent Fuel  

Science Conference Proceedings (OSTI)

This is an end-of-year report (Fiscal Year (FY) 2011) for the second year of effort on a project funded by the National Nuclear Security Administration's Office of Nuclear Safeguards (NA-241). The goal of this project is to investigate the feasibility of using Neutron Resonance Transmission Analysis (NRTA) to assay plutonium in commercial light-water-reactor spent fuel. This project is part of a larger research effort within the Next-Generation Safeguards Initiative (NGSI) to evaluate methods for assaying plutonium in spent fuel, the Plutonium Assay Challenge. The second-year goals for this project included: (1) assessing the neutron source strength needed for the NRTA technique, (2) estimating count times, (3) assessing the effect of temperature on the transmitted signal, (4) estimating plutonium content in a spent fuel assembly, (5) providing a preliminary assessment of the neutron detectors, and (6) documenting this work in an end of the year report (this report). Research teams at Los Alamos National Laboratory (LANL), Lawrence Berkeley National Laboratory (LBNL), Pacific Northwest National Laboratory (PNNL), and at several universities are also working to investigate plutonium assay methods for spent-fuel safeguards. While the NRTA technique is well proven in the scientific literature for assaying individual spent fuel pins, it is a newcomer to the current NGSI efforts studying Pu assay method techniques having just started in March 2010; several analytical techniques have been under investigation within this program for two to three years or more. This report summarizes work performed over a nine month period from January-September 2011 and is to be considered a follow-on or add-on report to our previous published summary report from December 2010 (INL/EXT-10-20620).

J. W. Sterbentz; D. L. Chichester

2011-09-01T23:59:59.000Z

200

Electrical Techniques | Open Energy Information  

Open Energy Info (EERE)

Electrical Techniques Electrical Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electrical Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Dictionary.png Electrical Techniques: Electrical techniques aim to image the electrical resistivity of the

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 16 Investigation of Protein-Lipid Interactions by Vibrational Spectroscopy  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 16 Investigation of Protein-Lipid Interactions by Vibrational Spectroscopy Methods and Analyses eChapters Methods - Analyses Books AOCS Press Downloadable

202

Extreme Chromatography: Faster, Hotter, SmallerChapter 8 Multiple Parallel Mass Spectrometry Techniques for Lipid and Vitamin D Analysis  

Science Conference Proceedings (OSTI)

Extreme Chromatography: Faster, Hotter, Smaller Chapter 8 Multiple Parallel Mass Spectrometry Techniques for Lipid and Vitamin D Analysis Methods and Analyses eChapters Methods - Analyses Books AOCS Press Downloadable pdf...

203

A Diabatic Lagrangian Technique for the Analysis of Convective Storms. Part II: Application to a radar-observed storm  

Science Conference Proceedings (OSTI)

A new diabatic Lagrangian analysis (DLA) technique that derives predicted fields of potential temperature, water vapor and cloud water mixing ratios, and virtual buoyancy from three-dimensional, time-dependent wind and reflectivity fields (see ...

Conrad L. Ziegler

204

Using digital filtering techniques as an aid in wind turbine data analysis  

DOE Green Energy (OSTI)

Research involving very large sets of digital data is often difficult due to the enormity of the database. In the case of a wind turbine operating under varying environmental conditions, determining which data are representative of the blade aerodynamics and which are due to transient flow ingestion effects or errors in instrumentation, operation, and data collection is of primary concern to researchers. The National Renewable Energy Laboratory in Golden, Colorado collected extensive data on a downwind horizontal axis wind turbine (HAWT) during a turbine test project called the Combined Experiment. A principal objective of this experiment was to provide a means to predict HAWT aerodynamic, mechanical, and electrical operational loads based upon analytical models of aerodynamic performance related to blade design and inflow conditions. In a collaborative effort with the Aerospace Engineering Department at the University of Colorado at Boulder, a team of researchers has evolved and utilized various digital filtering techniques in analyzing the data from the Combined Experiment. A preliminary analysis of the data set was performed to determine how to best approach the data. The reduced data set emphasized selection of inflow conditions such that the aerodynamic data could be compared directly to wind tunnel data obtained for the same airfoil design as used for the HAWT`s blades. It will be shown that this reduced data set has yielded valid, reproducible results that a simple averaging technique or a random selection approach cannot achieve. These findings provide a stable baseline against which operational HAWT data can be compared.

Young, T. [Univ. of Colorado, Boulder, CO (United States). BioServe Space Technologies

1994-11-01T23:59:59.000Z

205

Development of MELCOR Input Techniques for High Temperature Gas-Cooled Reactor Analysis  

E-Print Network (OSTI)

High Temperature Gas-cooled Reactors (HTGRs) can provide clean electricity,as well as process heat that can be used to produce hydrogen for transportation and other sectors. A prototypic HTGR, the Next Generation Nuclear Plant (NGNP),will be built at Idaho National Laboratory.The need for HTGR analysis tools and methods has led to the addition of gas-cooled reactor (GCR) capabilities to the light water reactor code MELCOR. MELCOR will be used by the Nuclear Regulatory Commission licensing of the NGNP and other HTGRs. In the present study, new input techniques have been developed for MELCOR HTGR analysis. These new techniques include methods for modeling radiation heat transfer between solid surfaces in an HTGR, calculating fuel and cladding geometric parameters for pebble bed and prismatic block-type HTGRs, and selecting appropriate input parameters for the reflector component in MELCOR. The above methods have been applied to input decks for a water-cooled reactor cavity cooling system (RCCS); the 400 MW Pebble Bed Modular Reactor (PBMR), the input for which is based on a code-to-code benchmark activity; and the High Temperature Test Facility (HTTF), which is currently in the design phase at Oregon State University. RCCS results show that MELCOR accurately predicts radiation heat transfer rates from the vessel but may overpredict convective heat transfer rates and RCCS coolant flow rates. PBMR results show that thermal striping from hot jets in the lower plenum during steady-state operations, and in the upper plenum during a pressurized loss of forced cooling accident, may be a major design concern. Hot jets could potentially melt control rod drive mechanisms or cause thermal stresses in plenum structures. For the HTTF, results will provide data to validate MELCOR for HTGR analyses. Validation will be accomplished by comparing results from the MELCOR representation of the HTTF to experimental results from the facility. The validation process can be automated using a modular code written in Python, which is described here.

Corson, James

2010-05-01T23:59:59.000Z

206

Magnetotelluric Techniques | Open Energy Information  

Open Energy Info (EERE)

Magnetotelluric Techniques Magnetotelluric Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Magnetotelluric Techniques Details Activities (0) Areas (0) Regions (0) NEPA(2) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Sounding Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Dictionary.png Magnetotelluric Techniques:

207

Identifying Fracture Types and Relative Ages Using Fluid Inclusion Stratigraphy  

DOE Green Energy (OSTI)

Enhanced Geothermal Systems (EGS) are designed to recover heat from the subsurface by mechanically creating fractures in subsurface rocks. Understanding the life cycle of a fracture in a geothermal system is fundamental to the development of techniques for creating fractures. Recognizing the stage of a fracture, whether it is currently open and transmitting fluids; if it recently has closed; or if it is an ancient fracture would assist in targeting areas for further fracture stimulation. Identifying dense fracture areas as well as large open fractures from small fracture systems will also assist in fracture stimulation selection. Geothermal systems are constantly generating fractures, and fluids and gases passing through rocks in these systems leave small fluid and gas samples trapped in healed microfractures. Fluid inclusions trapped in minerals as the fractures heal are characteristic of the fluids that formed them, and this signature can be seen in fluid inclusion gas analysis. Our hypothesis is that fractures over their life cycle have different chemical signatures that we can see in fluid inclusion gas analysis and by using the new method of fluid inclusion stratigraphy (FIS) the different stages of fractures, along with an estimate of fracture size can be identified during the well drilling process. We have shown with this study that it is possible to identify fracture locations using FIS and that different fractures have different chemical signatures however that signature is somewhat dependent upon rock type. Open, active fractures correlate with increase concentrations of CO2, N2, Ar, and to a lesser extent H2O. These fractures would be targets for further enhancement. The usefulness of this method is that it is low cost alternative to current well logging techniques and can be done as a well is being drilled.

Dilley, Lorie M.; Norman, David; Owens, Lara

2008-06-30T23:59:59.000Z

208

Workshop: Tcnicas Avanadas de Anlise de Imagens de Sensoriamento Remoto (Recent Advances in Image Analysis Techniques for Remote Sensing)  

E-Print Network (OSTI)

in Image Analysis Techniques for Remote Sensing) Coordenadores: Leila Maria G. Fonseca (INPE) e João Paulo in remote sensing technology, especially improved spectral, spatial, and temporal resolutions, have put different from more conventional approaches for remote sensing image analysis. Hora Título das Palestras

209

Compound Specific Stable Nitrogen Isotope Analysis of Amino Acids: What can this Novel Technique tell us about  

E-Print Network (OSTI)

Compound Specific Stable Nitrogen Isotope Analysis of Amino Acids: What can this Novel Technique, Jeff Seminoff2 1Department of Geology and Geophysics, University of Hawaii 2Southwest Fisheries Science trophic models, but relationships often complex and dynamic #12;· Bulk tissue nitrogen isotope analysis

Hawai'i at Manoa, University of

210

Modeling Techniques | Open Energy Information  

Open Energy Info (EERE)

Modeling Techniques Modeling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Modeling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Data and Modeling Techniques Exploration Sub Group: Modeling Techniques Parent Exploration Technique: Data and Modeling Techniques Information Provided by Technique Lithology: Rock types, rock chemistry, stratigraphic layer organization Stratigraphic/Structural: Stress fields and magnitudes, location and shape of permeable and non-permeable structures, faults, fracture patterns Hydrological: Visualization and prediction of the flow patterns and characteristics of geothermal fluids, hydrothermal fluid flow characteristics, up-flow patterns

211

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid  

Open Energy Info (EERE)

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Details Activities (4) Areas (4) Regions (0) Abstract: A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first 7 months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. Analyses are in progress on inclusions from the Salton Sea, Valles Caldera, Geysers, and Coso geothermal systems. Author(s): Mckibben, M. A.

212

Application of direct-fitting, mass-integral, and multi-rate methods to analysis of flowing fluid electric conductivity logs from Horonobe, Japan  

E-Print Network (OSTI)

traces of drilling mud) and formation fluid flowing into theof drilling mud in the wellbore may impact fluid logging twodrilling mud itself is presumably significantly denser than formation fluid,

Doughty, C.; Tsang, C.-F.; Hatanaka, K.; Yabuuchi, S.; Kurikami, H.

2008-01-01T23:59:59.000Z

213

Trace Element Analysis | Open Energy Information  

Open Energy Info (EERE)

Trace Element Analysis Trace Element Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Trace Element Analysis Details Activities (8) Areas (8) Regions (4) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Reconstructing the fluid circulation of a hydrothermal system Thermal: Cost Information Low-End Estimate (USD): 15.001,500 centUSD 0.015 kUSD 1.5e-5 MUSD 1.5e-8 TUSD / element Median Estimate (USD): 18.001,800 centUSD 0.018 kUSD 1.8e-5 MUSD 1.8e-8 TUSD / element High-End Estimate (USD): 106.0010,600 centUSD 0.106 kUSD 1.06e-4 MUSD 1.06e-7 TUSD / element

214

Compound and Elemental Analysis | Open Energy Information  

Open Energy Info (EERE)

Compound and Elemental Analysis Compound and Elemental Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Compound and Elemental Analysis Details Activities (104) Areas (69) Regions (6) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Results can aid in the determination of fluid source regions and circulation pathways. Thermal: Certain elements exhibit high spatial correlation with high-temperature geothermal systems. Cost Information Low-End Estimate (USD): 15.001,500 centUSD 0.015 kUSD 1.5e-5 MUSD 1.5e-8 TUSD / compound Median Estimate (USD): 30.003,000 centUSD

215

Final Report, DE-FG02-92ER14261, Pore Scale Geometric and Fluid Distribution Analysis  

SciTech Connect

The elucidation of the relationship between pore scale structure and fluid flow in porous media is a fundamental problem of long standing interest. Incomplete characterization of medium properties continues to be a limiting factor in accurate field scale simulations. The accomplishments of this grant have kept us at the forefront in investigating the applicability of X-ray computed microtomography (XCMT) as a tool for contributing to the understanding of this relationship. Specific accomplishments have been achieved in four areas: - development of numerical algorithms (largely in the field of computational geometry) to provide automated recognition of and measurements on features of interest in the pore space. These algorithms have been embodied in a software package, 3DMA-Rock. - application of these algorithms to extensive studies of the pore space of sandstones. - application of these algorithms to studies of fluid (oil/water) partitioning in the pore space of Berea sandstone and polyethylene models. - technology transfer.

W. Brent Lindquist

2005-01-21T23:59:59.000Z

216

Analysis of Paraho oil shale products and effluents: an example of the multi-technique approach  

DOE Green Energy (OSTI)

Inorganic analysis of solid, liquid and gaseous samples from the Paraho Semiworks Retort was completed using a multitechnique approach. The data were statistically analyzed to determine both the precision of each method and to see how closely the various techniques compared. The data were also used to determine the redistribution of 31 trace and major elements in the various effluents, including the offgas for the Paraho Retort operating in the direct mode. The computed mass balances show that approximately 1% or greater fractions of the As, Co, Hg, N, Ni, S and Se are released during retorting and redistributed to the product shale oil, retort water or product offgas. The fraction for these seven elements ranged from almost 1% for Co and Ni to 50 to 60% for Hg and N. Approximately 20% of the S and 5% of the As and Se are released. The mass balance redistribution during retorting for Al, Fe, Mg, V and Zn was observed to be no greater than .05%. These redistribution figures are generally in agreement with previous mass balance studies made for a limited number of elements on laboratory or smaller scale pilot retorts. 7 tables.

Fruchter, J. S.; Wilkerson, C. L.; Evans, J. C.; Sanders, R. W.

1979-06-10T23:59:59.000Z

217

A Dosimetric Analysis of IMRT and Multistatic Fields Techniques for Left Breast Radiotherapy  

Science Conference Proceedings (OSTI)

The purpose of this study was to analyze the dosimetric difference between intensity-modulated radiation therapy (IMRT) using 3 or 5 beams and multistatic field technique (MSF) in radiotherapy of the left breast. We made comparative analysis of two kinds of radiotherapy that can achieve improved dose homogeneity. First is a MSF that uses both major and small irradiation fields at the same time. The other is IMRT using 3 or 5 beams with an inverse planning system using multiple static multileaf collimators. We made treatment plans for 16 early left breast cancer patients who were randomly selected and had undergone breast conserving surgery and radiotherapy, and analyzed them in the dosimetric aspect. For the mean values of V{sub 95} and dose homogeneity index, no statistically significant difference was observed among the three therapies. Extreme hot spots receiving >110% of prescribed dose were not found in any of the three methods. Using Tukey's test, IMRT showed a significantly larger increase in exposure dose to the ipsilateral lung and the heart than MSF in the low-dose area, but in the high-dose area, MSF showed a slight increase. To improve dose homogeneity, the application of MSF, which can be easily planned and applied more widely, is considered optimal as an alternative to IMRT for radiotherapy of early left breast cancer.

Moon, Seong Kwon [Department of Radiation Oncology, Soonchunhyang University Hospital, Bucheon-Si, Gyeonggi-do (Korea, Republic of); Kim, Yeon Sil [Department of Radiation Oncology, Catholic University of Korea, Seoul St. Mary's Hospital, Seoul (Korea, Republic of); Kim, Soo Young [Department of Preventive Medicine, Eulji University Hospital, Daejeon (Korea, Republic of); Lee, Mi Jo; Keum, Hyun Sup; Kim, Seung Jin; Youn, Seon Min [Department of Radiation Oncology, Eulji University Hospital, Daejeon (Korea, Republic of)

2011-10-01T23:59:59.000Z

218

Universal fluid droplet ejector  

DOE Patents (OSTI)

A droplet generator comprises a fluid reservoir having a side wall made of glass or quartz, and an end cap made from a silicon plate. The end cap contains a micromachined aperture through which the fluid is ejected. The side wall is thermally fused to the end cap, and no adhesive is necessary. This means that the fluid only comes into contact with the side wall and the end cap, both of which are chemically inert. Amplitudes of drive pulses received by reservoir determine the horizontal displacements of droplets relative to the ejection aperture. The drive pulses are varied such that the dropper generates a two-dimensional array of vertically-falling droplets. Vertical and horizontal interdroplet spacings may be varied in real time. Applications include droplet analysis experiments such as Millikan fractional charge searches and aerosol characterization, as well as material deposition applications.

Lee, Eric R. (Redwood City, CA); Perl, Martin L. (Palo Alto, CA)

1999-08-24T23:59:59.000Z

219

Failure Analysis of a 345 kV High-Pressure, Fluid-Filled Cable Insulated with Laminated Paper Polypropylene at New York Power Author ity  

Science Conference Proceedings (OSTI)

Three cable pieces of a 345-kV high-pressure, fluid-filled, laminated paper151polypropylene (LPP) cable, each nearly 3 ft in length, were received from New York Power Authority in January 2010. The Detroit Edison Company performed the dissection and analysis to address the cause(s) of the failure that occurred in late December 2009 and that was experienced by this 10.1 circuit-mile cable that had been energized in service in May 1991. One of the pieces contained the failure, and the other two were adjace...

2011-02-28T23:59:59.000Z

220

Fluid extraction  

DOE Patents (OSTI)

A method of extracting metalloid and metal species from a solid or liquid material by exposing the material to a supercritical fluid solvent containing a chelating agent is described. The chelating agent forms chelates that are soluble in the supercritical fluid to allow removal of the species from the material. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is a fluorinated .beta.-diketone. In especially preferred embodiments the extraction solvent is supercritical carbon dioxide, and the chelating agent comprises a fluorinated .beta.-diketone and a trialkyl phosphate, or a fluorinated .beta.-diketone and a trialkylphosphine oxide. Although a trialkyl phosphate can extract lanthanides and actinides from acidic solutions, a binary mixture comprising a fluorinated .beta.-diketone and a trialkyl phosphate or a trialkylphosphine oxide tends to enhance the extraction efficiencies for actinides and lanthanides. The method provides an environmentally benign process for removing contaminants from industrial waste without using acids or biologically harmful solvents. The method is particularly useful for extracting actinides and lanthanides from acidic solutions. The chelate and supercritical fluid can be regenerated, and the contaminant species recovered, to provide an economic, efficient process.

Wai, Chien M. (Moscow, ID); Laintz, Kenneth E. (Los Alamos, NM)

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Stoneley Analysis | Open Energy Information  

Open Energy Info (EERE)

Stoneley Analysis Stoneley Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Stoneley Analysis Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Acoustic Logs Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Stoneley Analysis: A type of large-amplitude interface, or surface, wave generated by a sonic tool in a borehole. Stoneley waves can propagate along a solid-fluid interface, such as along the walls of a fluid-filled borehole and are the main low-frequency component of signal generated by sonic sources in boreholes. Analysis of Stoneley waves can allow estimation of the locations

222

Multi-dimensional finite element code for the analysis of coupled fluid energy, and solute transport (CFEST)  

DOE Green Energy (OSTI)

The Seasonal Thermal Energy Storage Program is being conducted for the Department of Energy by Pacific Northwest Laboratory. A major thrust of this program has been the study of natural aquifers as hosts for thermal energy storage and retrieval. Numerical simulation of the nonisothermal response of the host media is fundamental to the evaluation of proposed experimental designs and field test results. This report represents the primary documentation for the coupled fluid, energy and solute transport (CFEST) code. Sections of this document are devoted to the conservation equations and their numerical analogues, the input data requirements, and the verification studies completed to date.

Gupta, S.K.; Kincaid, C.T.; Meyer, P.R.; Newbill, C.A.; Cole, C.R.

1982-08-01T23:59:59.000Z

223

ANALYSIS OF EMERGING NDE TECHNIQUES: METHODS FOR EVALUATING AND IMPLEMENTING CONTINUOUS ONLINE MONITORING  

SciTech Connect

One of the goals of the program for the proactive management of materials degradation (PMMD) is to manage proactively the in-service degradation of metallic components in aging NPPs. As some forms of degradation, such as stress corrosion cracking, are characterized by a long initiation time followed by a rapid growth phase, new inspection or monitoring technologies may be required. New nondestructive evaluation (NDE) techniques that may be needed include techniques to find stress corrosion cracking (SCC) precursors, on-line monitoring techniques to detect cracks as they initiate and grow, as well as advances in NDE technologies. This paper reports on the first part of the development of a methodology to determine the effectiveness of these emerging NDE techniques for managing metallic degradation. This methodology will draw from experience derived from evaluating techniques that have "emerged" in the past. The methodology will follow five stages: a definition of inspection parameters, a technical evaluation, laboratory testing, round robin testing, and the design of a performance demonstration program. This methodology will formalize the path taken for previous techniques and set a predictable course for future NDE techniques. This paper then applies the expert review section of the methodology to the acoustic emission technique to evaluate the use of acoustic emission in performing continuous online monitoring of reactor components.

Cumblidge, Stephen E.; Doctor, Steven R.; Bond, Leonard J.; Taylor, Theodore T.; Lupold, Timothy R.; Hull, Amy; Malik, Shah

2009-08-05T23:59:59.000Z

224

Covariant analysis of Newtonian multi-fluid models for neutron stars: II Stress - energy tensors and virial theorems  

E-Print Network (OSTI)

The 4-dimensionally covariant approach to multiconstituent Newtonian fluid dynamics presented in the preceding article of this series is developed by construction of the relevant 4-dimensional stress energy tensor whose conservation in the non-dissipative variational case is shown to be interpretable as a Noether identity of the Milne spacetime structure. The formalism is illustrated by the application to homogeneously expanding cosmological models, for which appropriately generalised local Bernouilli constants are constructed. Another application is to the Iordanski type generalisation of the Joukowski formula for the Magnus force on a vortex. Finally, at a global level, a new (formally simpler but more generally applicable) version of the ``virial theorem'' is obtained for multiconsituent -- neutron or other -- fluid star models as a special case within an extensive category of formulae whereby the time evolution of variously weighted mass moment integrals is determined by corresponding space integrals of stress tensor components, with the implication that all such stress integrals must vanish for any stationary equilibrium configuration.

Brandon Carter; Nicolas Chamel

2003-12-16T23:59:59.000Z

225

A new deaeration technique for fluid polymers  

Science Conference Proceedings (OSTI)

By incorporating a mechanical vibrator or a rotating disk into the presently used deaeration system, the time required to deaerate adhesive polymers can be drastically reduced. The mechanical vibrator is efficient but it requires electrical power. The rotating disk deaerator can use a compressed air motor in a high explosives area or an electric motor in other areas. The rotating disks can easily be fabricated as low cost disposable items.

Montague, J.L.

1987-03-01T23:59:59.000Z

226

Routine application of the in situ soil analysis technique by the Yankee Atomic Environmental Laboratory  

Science Conference Proceedings (OSTI)

Using a technique developed by the Environmental Measurements Laboratory (EML) for field spectrometry, the Yankee Atomic Environmental Laboratory (YAEL) has routinely performed in situ soil measurements in the vicinity of five nuclear power stations for more than a decade. As a special research endeavor, several locations at the FURNAS Angra 1 site in Brazil having high natural backgrounds were also measured in 1987. The technical basis of the technique, a comparison of soil radionuclide concentrations predicted by the in situ technique to soil radionuclide concentrations predicted by the in situ technique to soil analyses from the same sites, the advantages and disadvantages of the in situ methodology, and the evolution of the portable equipment utilized at YAEL for the field measurements are presented in this paper.

Murray, J.C.; McCurdy, D.E.; Laurenzo, E.L.

1989-01-01T23:59:59.000Z

227

Multimodel Combination Techniques for Analysis of Hydrological Simulations: Application to Distributed Model Intercomparison Project Results  

Science Conference Proceedings (OSTI)

This paper examines several multimodel combination techniques that are used for streamflow forecasting: the simple model average (SMA), the multimodel superensemble (MMSE), modified multimodel superensemble (M3SE), and the weighted average method ...

Newsha K. Ajami; Qingyun Duan; Xiaogang Gao; Soroosh Sorooshian

2006-08-01T23:59:59.000Z

228

High-Resolution Stratospheric Tracer Fields Reconstructed with Lagrangian Techniques: A Comparative Analysis of Predictive Skill  

Science Conference Proceedings (OSTI)

Numerical experiments and statistical analyses are conducted to determine the skill of different Lagrangian techniques for the construction of tracer distributions. High-resolution potential vorticity (PV) maps are calculated from simulations of ...

R. Dragani; G. Redaelli; G. Visconti; A. Mariotti; V. Rudakov; A. R. MacKenzie; L. Stefanutti

2002-06-01T23:59:59.000Z

229

Modeling and optimization of geothermal power plants using the binary fluid cycle  

SciTech Connect

A computer simulation of a binary fluid cycle power plant for use with geothermal energy sources, and the subsequent optimization of this power plant type over a range of geothermal source conditions are described. The optimization technique employed for this analysis was based upon the principle of maximum use of geothermal energy.

Walter, R.A.

1976-09-01T23:59:59.000Z

230

Thermo-fluid-dynamics analysis of the unit 3 Fukushima Daiichi Accident with the RELAP5\\SCDAP code.  

E-Print Network (OSTI)

??The aim of this thesis is the analysis of the physical phenomena involved in the nuclear accident at Fukushima NPP. This study has been articulated (more)

VENTURI, FRANCESCO LINO

2012-01-01T23:59:59.000Z

231

Computational analysis of coupled fluid, heat, and mass transport in ferrocyanide single-shell tanks: FY 1994 interim report. Ferrocyanide Tank Safety Project  

Science Conference Proceedings (OSTI)

A computer modeling study was conducted to determine whether natural convection processes in single-shell tanks containing ferrocyanide wastes could generate localized precipitation zones that significantly concentrate the major heat-generating radionuclide, {sup 137}Cs. A computer code was developed that simulates coupled fluid, heat, and single-species mass transport on a regular, orthogonal finite-difference grid. The analysis showed that development of a ``hot spot`` is critically dependent on the temperature dependence for the solubility of Cs{sub 2}NiFe(CN){sub 6} or CsNaNiFe(CN){sub 6}. For the normal case, where solubility increases with increasing temperature, the net effect of fluid flow, heat, and mass transport is to disperse any local zones of high heat generation rate. As a result, hot spots cannot physically develop for this case. However, assuming a retrograde solubility dependence, the simulations indicate the formation of localized deposition zones that concentrate the {sup 137}Cs near the bottom center of the tank where the temperatures are highest. Recent experimental studies suggest that Cs{sub 2}NiFe(CN){sub 6}(c) does not exhibit retrograde solubility over the temperature range 25{degree}C to 90{degree}C and NaOH concentrations to 5 M. Assuming these preliminary results are confirmed, no natural mass transport process exists for generating a hot spot in the ferrocyanide single-shell tanks.

McGrail, B.P.

1994-11-01T23:59:59.000Z

232

A Shell/3D Modeling Technique for the Analysis of Delaminated Composite Laminates  

E-Print Network (OSTI)

A shell/3D modeling technique developed which local three-dimensional solid finite element model used only immediate vicinity delamination front. The goal was combine the accuracy the three-dimensional solution with the computational efficiency plate shell finite element model. Multi-point constraints provided kinematically compatible interface between local three-dimensional model global structural model which has been meshed with plate shell finite elements. Double Cantilever Beam (DCB), Notched Flexure (ENF), Single Bending (SLB) specimens were modeled using shell/3D technique study feasibility pure mode (DCB), mode (ENF) mixed mode I/II (SLB) cases. Mixed mode strain energy release rate distributions were computed across the width specimens using virtual crack closure technique. Specimens a unidirectional layup and with multidirectional layup where delamination located between two non-zero degree plies were simulated. For a local three-dimensional model, extending minimum about thr...

Ronald Krueger; T. Kevin O' Brien

2001-01-01T23:59:59.000Z

233

Computer shadow analysis technique for tilted windows shaded by overhangs, vertical projections, and side fins  

SciTech Connect

This paper expands upon previously published techniques for calculating window shadow areas by computer to include tilted and horizontal glazing systems as well as vertical glazing systems. This methodology may be used for any rectangular window shaded by rectangular overhangs and/or side fins perpendicular to the plane of the window. Rectangular projections suspended from the end of an overhang are also accommodated. The technique yields a precise solution and requires minimum input. Computer processing is rapid because iterative algorithms are avoided. Shadow overlaps and end effects are completely treated. The glazing system may have any degree of tilt from horizontal (looking upward) through vertical to horizontal (looking downward). Techniques for sorting window shadow shapes and equations for calculating shadow areas are included.

Bekooy, R.G.

1983-01-01T23:59:59.000Z

234

Energy variational analysis of ions in water and channels: Field theory for primitive models of complex ionic fluids  

E-Print Network (OSTI)

Energy variational analysis of ions in water and channels: Field theory for primitive models EnVarA energy variational analysis that combines Hamilton's least action and Rayleigh's dissipation, and ion channels. Flows are driven by a combination of electrical and chemical potentials that depend

Liu, Chun

235

Analysis of the optics of the Final Focus Test Beam using Lie algebra based techniques  

Science Conference Proceedings (OSTI)

This report discusses the analysis of the beam optics of the final focus test beam at the Stanford Linear Collider using Lie algebra. (LSP).

Roy, G.J.

1992-09-01T23:59:59.000Z

236

HANFORD DST THERMAL & SEISMIC PROJECT ANSYS BENCHMARK ANALYSIS OF SEISMIC INDUCED FLUID STRUCTURE INTERACTION IN A HANFORD DOUBLE SHELL PRIMARY TANK  

Science Conference Proceedings (OSTI)

M&D Professional Services, Inc. (M&D) is under subcontract to Pacific Northwest National Laboratories (PNNL) to perform seismic analysis of the Hanford Site Double-Shell Tanks (DSTs) in support of a project entitled ''Double-Shell Tank (DSV Integrity Project-DST Thermal and Seismic Analyses)''. The overall scope of the project is to complete an up-to-date comprehensive analysis of record of the DST System at Hanford in support of Tri-Party Agreement Milestone M-48-14. The work described herein was performed in support of the seismic analysis of the DSTs. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). The overall seismic analysis of the DSTs is being performed with the general-purpose finite element code ANSYS. The overall model used for the seismic analysis of the DSTs includes the DST structure, the contained waste, and the surrounding soil. The seismic analysis of the DSTs must address the fluid-structure interaction behavior and sloshing response of the primary tank and contained liquid. ANSYS has demonstrated capabilities for structural analysis, but the capabilities and limitations of ANSYS to perform fluid-structure interaction are less well understood. The purpose of this study is to demonstrate the capabilities and investigate the limitations of ANSYS for performing a fluid-structure interaction analysis of the primary tank and contained waste. To this end, the ANSYS solutions are benchmarked against theoretical solutions appearing in BNL 1995, when such theoretical solutions exist. When theoretical solutions were not available, comparisons were made to theoretical solutions of similar problems and to the results from Dytran simulations. The capabilities and limitations of the finite element code Dytran for performing a fluid-structure interaction analysis of the primary tank and contained waste were explored in a parallel investigation (Abatt 2006). In conjunction with the results of the global ANSYS analysis reported in Carpenter et al. (2006), the results of the two investigations will be compared to help determine if a more refined sub-model of the primary tank is necessary to capture the important fluid-structure interaction effects in the tank and if so, how to best utilize a refined sub-model of the primary tank. Both rigid tank and flexible tank configurations were analyzed with ANSYS. The response parameters of interest are total hydrodynamic reaction forces, impulsive and convective mode frequencies, waste pressures, and slosh heights. To a limited extent: tank stresses are also reported. The results of this study demonstrate that the ANSYS model has the capability to adequately predict global responses such as frequencies and overall reaction forces. Thus, the model is suitable for predicting the global response of the tank and contained waste. On the other hand, while the ANSYS model is capable of adequately predicting waste pressures and primary tank stresses in a large portion of the waste tank, the model does not accurately capture the convective behavior of the waste near the free surface, nor did the model give accurate predictions of slosh heights. Based on the ability of the ANSYS benchmark model to accurately predict frequencies and global reaction forces and on the results presented in Abatt, et al. (2006), the global ANSYS model described in Carpenter et al. (2006) is sufficient for the seismic evaluation of all tank components except for local areas of the primary tank. Due to the limitations of the ANSYS model in predicting the convective response of the waste, the evaluation of primary tank stresses near the waste free surface should be supplemented by results from an ANSYS sub-model of the primary tank that incorporates pressures from theoretical solutions or from Dytran solutions. However, the primary tank is expected to have low demand to capacity ratios in the upper wall. Moreover, due to the less than desired mesh resolution in the primary tank knuckle of the global ANSYS model, the evaluation of the primary tank stresses in the lo

MACKEY, T.C.

2006-03-14T23:59:59.000Z

237

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

Science Conference Proceedings (OSTI)

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

Eric Serre; Serge Gauthier

2002-12-01T23:59:59.000Z

238

Research on memory access vulnerability analysis technique in SCADA protocol implementation  

Science Conference Proceedings (OSTI)

SCADA systems play key roles in monitor and control of the critical infrastructures, the vulnerabilities existed in them may destroy the controlled critical infrastructures. This paper proposes an analysis method of memory access vulnerability in SCADA ... Keywords: SCADA protocol implementation, dynamic analysis, memory access vulnerability

Fang Lan; Wang Chunlei; He Ronghui

2010-07-01T23:59:59.000Z

239

Analysis of electricity consumption profiles in public buildings with dimensionality reduction techniques  

Science Conference Proceedings (OSTI)

The analysis of the daily electricity consumption profile of a building and its correlation with environmental factors makes it possible to examine and estimate its electricity demand. As an alternative to the traditional correlation analysis, a new ... Keywords: Dimensionality reduction, Electricity consumption profiles, Energy efficiency, Information visualization

Antonio MorN, Juan J. Fuertes, Miguel A. Prada, SerafN Alonso, Pablo Barrientos, Ignacio DAz, Manuel DomNguez

2013-09-01T23:59:59.000Z

240

DRDU: A data reuse analysis technique for efficient scratch-pad memory management  

Science Conference Proceedings (OSTI)

In multimedia and other streaming applications, a significant portion of energy is spent on data transfers. Exploiting data reuse opportunities in the application, we can reduce this energy by making copies of frequently used data in a small local memory ... Keywords: Scratch-pad memory management, compiler analysis, data reuse analysis, memory hierarchy

Ilya Issenin; Erik Brockmeyer; Miguel Miranda; Nikil Dutt

2007-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Using sensitivity analysis and visualization techniques to open black box data mining models  

Science Conference Proceedings (OSTI)

In this paper, we propose a new visualization approach based on a Sensitivity Analysis (SA) to extract human understandable knowledge from supervised learning black box data mining models, such as Neural Networks (NNs), Support Vector Machines (SVMs) ... Keywords: Classification, Input importance, Regression, Sensitivity analysis, Supervised data mining, Visualization

Paulo Cortez; Mark J. Embrechts

2013-03-01T23:59:59.000Z

242

A review on vision techniques applied to Human Behaviour Analysis for Ambient-Assisted Living  

Science Conference Proceedings (OSTI)

Human Behaviour Analysis (HBA) is more and more being of interest for computer vision and artificial intelligence researchers. Its main application areas, like Video Surveillance and Ambient-Assisted Living (AAL), have been in great demand in recent ... Keywords: Action recognition, Activities of daily living (ADLs), Activity recognition, Ambient-Assisted Living, Computer vision, Human behaviour, Motion analysis

Alexandros Andr Chaaraoui; Pau Climent-Prez; Francisco Flrez-Revuelta

2012-09-01T23:59:59.000Z

243

Neutron Resonance Transmission Analysis (NRTA): A Nondestructive Assay Technique for the Next Generation Safeguards Initiatives Plutonium Assay Challenge  

SciTech Connect

This is an end-of-year report for a project funded by the National Nuclear Security Administration's Office of Nuclear Safeguards (NA-241). The goal of this project is to investigate the feasibility of using Neutron Resonance Transmission Analysis (NRTA) to assay plutonium in commercial light-water-reactor spent fuel. This project is part of a larger research effort within the Next-Generation Safeguards Initiative (NGSI) to evaluate methods for assaying plutonium in spent fuel, the Plutonium Assay Challenge. The first-year goals for this project were modest and included: 1) developing a zero-order MCNP model for the NRTA technique, simulating data results presented in the literature, 2) completing a preliminary set of studies investigating important design and performance characteristics for the NRTA measurement technique, and 3) documentation of this work in an end of the year report (this report). Research teams at Los Alamos National Laboratory (LANL), Lawrence Berkeley National Laboratory (LBNL), Pacific Northwest National Laboratory (PNNL), and at several universities are also working to investigate plutonium assay methods for spent-fuel safeguards. While the NRTA technique is well proven in the scientific literature for assaying individual spent fuel pins, it is a newcomer to the current NGSI efforts studying Pu assay method techniques having just started in March 2010; several analytical techniques have been under investigation within this program for two to three years or more. This report summarizes a nine month period of work.

J. W. Sterbentz; D. L. Chichester

2010-12-01T23:59:59.000Z

244

Laboratory tests, statistical analysis and correlations for regained permeability and breakthrough time in unconsolidated sands for improved drill-in fluid cleanup practices  

E-Print Network (OSTI)

Empirical models for estimating the breakthrough time and regained permeability for selected nondamaging drill-in fluids (DIF's) give a clear indication of formation damage and proper cleanup treatments for reservoir conditions analyzed in this study. We determined values of breakthrough time and regained permeability for common polymer-carbonate and sized-salt/saturated brine DIF's for a range at reservoir properties including temperature, drill solids content, and percent of acid in the cleanup treatment. We chose these DIF's because they form tight, thin filtercakes that control fluid leakoff and afford more complete wellbore cleanup properties than standard drilling muds, and we chose reservoir properties that could be varied and measured. Beginning with a large database of 101 tests with 8 independent variables such as type of drill-in fluid, temperature, screen type, presence of gravel pack, formation type, type of drill solids, concentration of drill solids, and cleanup treatments, we analyzed the importance of each variable. After that, we identified the independent variables we were taking into account during this research. Those variables were temperature, drill solids content, and concentration of hydrochloric acid in the cleanup treatment. Then we generated a matrix for each set of experiments that allowed us to organize and measure the conditions we were looking for, regained permeability and breakthrough time. In measuring the regained permeability, we used a linear-flow cell apparatus. In measuring the breakthrough time that particular cleaning procedures take to flow across the filter cake, we used a ceramic disc cell apparatus. We used statistical software to select properties, formation, and diagnostics of the models and to develop relationships among the properties of the DIF's. We developed four new empirical models for estimating the breakthrough time and regained permeability in polymer carbonate and sized salt. High correlations resulted with R values between 0.851 and 0.986 corroborated by close values of adjusted R-square and low P-values give validity to the correlations found. This technique gives a broad overview of the formation damage as well as the proper cleanup treatment for similar conditions presented in the field.

Serrano, Gerardo Enrique

2000-01-01T23:59:59.000Z

245

Downhole Techniques | Open Energy Information  

Open Energy Info (EERE)

Downhole Techniques Downhole Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Downhole Techniques Details Activities (0) Areas (0) Regions (0) NEPA(7) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Determination of lithology, grain size Stratigraphic/Structural: Thickness and geometry of rock strata, fracture identification Hydrological: Porosity, permeability, water saturation Thermal: Formation temperature with depth Dictionary.png Downhole Techniques: Downhole techniques are measurements collected from a borehole environment which provide information regarding the character of formations and fluids

246

A Unified Technique for Dynamic Modeling and Stability Analysis of Microgrid Systems.  

E-Print Network (OSTI)

??This work presents a unified method for dynamic modeling and stability analysis of microgrid power systems. Using the automated state-model generation algorithm, a state-space model (more)

Johnson, Brian B.

2010-01-01T23:59:59.000Z

247

A Comparison of Two Objective Analysis Techniques for Profiler Time-Height Data  

Science Conference Proceedings (OSTI)

Two methods for objective analysis of wind profiler data in time-height space are proposed and compared. One is a straightforward adaptation of a procedure developed by Doswell for introducing time continuity into a sequence of spatial analyses. ...

Frederick H. Carr; Phillip L. Spencer; Charles A. Doswell III; Jeffrey D. Powell

1995-07-01T23:59:59.000Z

248

Evaluation of the Optimum Interpolation and Nudging Techniques for Soil Moisture Analysis Using FIFE Data  

Science Conference Proceedings (OSTI)

Initialization of land surface prognostic variables is a crucial issue for short- and medium-range forecasting as well as at seasonal timescales. In this study, two sequential soil moisture analysis schemes are tested, both based on the ...

Herv Douville; Pedro Viterbo; Jean-Franois Mahfouf; Anton C. M. Beljaars

2000-06-01T23:59:59.000Z

249

Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Seismic Techniques Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(10) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

250

An Empirical Analysis of Semantic Techniques Applied to a Network Management Classification Problem  

Science Conference Proceedings (OSTI)

Semantic technologies are increasingly being employed to integrate, relate and classify heterogeneous data from various problem domains. To date, however, little empirical analysis has been carried out to help identify the benefits and limitations of ... Keywords: OWL, SWRL, SPARQL, axioms, rules, queries, network performance management

Aidan Boran; Ivan Bedini; Christopher J. Matheus; Peter F. Patel-Schneider; Stefan Bischof

2012-12-01T23:59:59.000Z

251

Organizational Epidemiology and Energy Facilities: Statistical Techniques for Empirical Analysis and Prediction of Human Performance Trends  

Science Conference Proceedings (OSTI)

This report describes an empirical study of the prediction of human performance and energy facility performance based on analysis of historical data relating to worker-, workplace-, management-, and organization-centered factors. Findings verify the relationship between antecedent conditions of human performance and facility productivity, reliability, and safety.

2002-07-23T23:59:59.000Z

252

Combining statistical data analysis techniques to extract topical keyword classes from corpora  

Science Conference Proceedings (OSTI)

We present an unsupervised method for the generation from a textual corpus of sets of keywords, that is, words whose occurrences in a text are strongly connected with the presence of a given topic. Each of these classes is associated with one of the ... Keywords: Statistical Data Analysis, Topic Characterization, Topic Detection, Unsupervised Classification

Mathias Rossignol; Pascale Sbillot

2005-01-01T23:59:59.000Z

253

Analysis of cache-coherence bottlenecks with hybrid hardware/software techniques  

Science Conference Proceedings (OSTI)

Application performance on high-performance shared-memory systems is often limited by sharing patterns resulting in cache-coherence bottlenecks. Current approaches to identify coherence bottlenecks incur considerable run-time overhead and do not scale. ... Keywords: Hardware performance monitoring, SMPs, cache analysis, coherence protocols, dynamic binary rewriting, program instrumentation

Jaydeep Marathe; Frank Mueller; Bronis R. de Supinski

2006-12-01T23:59:59.000Z

254

A survey on automated dynamic malware-analysis techniques and tools  

Science Conference Proceedings (OSTI)

Anti-virus vendors are confronted with a multitude of potentially malicious samples today. Receiving thousands of new samples every day is not uncommon. The signatures that detect confirmed malicious threats are mainly still created manually, so it is ... Keywords: Dynamic analysis, malware

Manuel Egele; Theodoor Scholte; Engin Kirda; Christopher Kruegel

2012-02-01T23:59:59.000Z

255

Nonlinear Fluid Dynamics from Gravity  

E-Print Network (OSTI)

Black branes in AdS5 appear in a four parameter family labeled by their velocity and temperature. Promoting these parameters to Goldstone modes or collective coordinate fields -- arbitrary functions of the coordinates on the boundary of AdS5 -- we use Einstein's equations together with regularity requirements and boundary conditions to determine their dynamics. The resultant equations turn out to be those of boundary fluid dynamics, with specific values for fluid parameters. Our analysis is perturbative in the boundary derivative expansion but is valid for arbitrary amplitudes. Our work may be regarded as a derivation of the nonlinear equations of boundary fluid dynamics from gravity. As a concrete application we find an explicit expression for the expansion of this fluid stress tensor including terms up to second order in the derivative expansion.

Sayantani Bhattacharyya; Veronika E Hubeny; Shiraz Minwalla; Mukund Rangamani

2007-12-14T23:59:59.000Z

256

Downhole Fluid Analyzer Development  

SciTech Connect

A novel fiber optic downhole fluid analyzer has been developed for operation in production wells. This device will allow real-time determination of the oil, gas and water fractions of fluids from different zones in a multizone or multilateral completion environment. The device uses near infrared spectroscopy and induced fluorescence measurement to unambiguously determine the oil, water and gas concentrations at all but the highest water cuts. The only downhole components of the system are the fiber optic cable and windows. All of the active components--light sources, sensors, detection electronics and software--will be located at the surface, and will be able to operate multiple downhole probes. Laboratory testing has demonstrated that the sensor can accurately determine oil, water and gas fractions with a less than 5 percent standard error. Once installed in an intelligent completion, this sensor will give the operating company timely information about the fluids arising from various zones or multilaterals in a complex completion pattern, allowing informed decisions to be made on controlling production. The research and development tasks are discussed along with a market analysis.

Bill Turner

2006-11-28T23:59:59.000Z

257

New technique for phase shift analysis: multi-energy solution of inverse scattering problem  

E-Print Network (OSTI)

We demonstrate a new approach to the analysis of extensive multi-energy data. For the case of d + He-4, we produce a phase shift analysis covering for the energy range 3 to 11 MeV. The key idea is the use of iterative perturbative data-to-potential inversion which can produce potentials which reproduce the data simultaneously over a range of energies. It thus effectively regularizes the extraction of phase shifts from diverse, incomplete and possibly somewhat contradictory data sets. In doing so, it will provide guidance to experimentalists as to what further measurements should be made. This study is limited to vector spin observables and spin-orbit interactions. We discuss alternative ways in which the theory can be implemented and which provide insight into the ambiguity problems. We compare the extrapolation of these solutions to other energies. Majorana terms are presented for each potential component.

S. G. Cooper; V. I. Kukulin; R. S. Mackintosh; E. V. Kuznetsova

1998-03-05T23:59:59.000Z

258

Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques (Redirected from Electromagnetic Sounding Methods) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Sounding Techniques Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

259

Electromagnetic Profiling Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Profiling Techniques Electromagnetic Profiling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Profiling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

260

Well Testing Techniques | Open Energy Information  

Open Energy Info (EERE)

Well Testing Techniques Well Testing Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Well Testing Techniques Details Activities (0) Areas (0) Regions (0) NEPA(17) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: Enable estimation of in-situ reservoir elastic parameters Stratigraphic/Structural: Fracture distribution, formation permeability, and ambient tectonic stresses Hydrological: provides information on permeability, location of permeable zones recharge rates, flow rates, fluid flow direction, hydrologic connections, storativity, reservoir pressures, fluid chemistry, and scaling.

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques (Redirected from Ground Electromagnetic Methods) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Ground Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

262

Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Sounding Techniques Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

263

Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Ground Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Dictionary.png

264

HYDRGN - a computerized technique for the analysis of thermochemical water-splitting cycles  

DOE Green Energy (OSTI)

The HYDRGN computer program was designed to analyze closed thermochemical cycles for the production of hydrogen from water. This report includes the basic theory, assumptions, and methods of calculation used in this analysis along with a description of the program and its use. The source program and necessary data bank are available from the University of Kentucky. These may be obtained by sending a magnetic tape (minimum length 1200 ft) and a written request specifying the type of computer and recording characteristics of the tape. A small fee is charged for the recording and handling of the tape.

Carty, R. H.; Conger, W. L.; Funk, J. E.; Barker, R.

1977-06-01T23:59:59.000Z

265

HPC Usage Behavior Analysis and Performance Estimation with Machine Learning Techniques  

Science Conference Proceedings (OSTI)

Most researchers with little high performance computing (HPC) experience have difficulties productively using the supercomputing resources. To address this issue, we investigated usage behaviors of the world s fastest academic Kraken supercomputer, and built a knowledge-based recommendation system to improve user productivity. Six clustering techniques, along with three cluster validation measures, were implemented to investigate the underlying patterns of usage behaviors. Besides manually defining a category for very large job submissions, six behavior categories were identified, which cleanly separated the data intensive jobs and computational intensive jobs. Then, job statistics of each behavior category were used to develop a knowledge-based recommendation system that can provide users with instructions about choosing appropriate software packages, setting job parameter values, and estimating job queuing time and runtime. Experiments were conducted to evaluate the performance of the proposed recommendation system, which included 127 job submissions by users from different research fields. Great feedback indicated the usefulness of the provided information. The average runtime estimation accuracy of 64.2%, with 28.9% job termination rate, was achieved in the experiments, which almost doubled the average accuracy in the Kraken dataset.

Zhang, Hao [ORNL; You, Haihang [ORNL; Hadri, Bilel [ORNL; Fahey, Mark R [ORNL

2012-01-01T23:59:59.000Z

266

New analysis techniques for estimating impacts of federal appliance efficiency standards  

SciTech Connect

Impacts of U.S. appliance and equipment standards have been described previously. Since 2000, the U.S. Department of Energy (DOE) has updated standards for clothes washers, water heaters, and residential central air conditioners and heat pumps. A revised estimate of the aggregate impacts of all the residential appliance standards in the United States shows that existing standards will reduce residential primary energy consumption and associated carbon dioxide (CO{sub 2}) emissions by 89 percent in 2020 compared to the levels expected without any standards. Studies of possible new standards are underway for residential furnaces and boilers, as well as a number of products in the commercial (tertiary) sector, such as distribution transformers and unitary air conditioners. The analysis of standards has evolved in response to critiques and in an attempt to develop more precise estimates of costs and benefits of these regulations. The newer analysis elements include: (1) valuing energy savings by using marginal (rather than average) energy prices specific to an end-use; (2) simulating the impacts of energy efficiency increases over a sample population of consumers to quantify the proportion of households having net benefits or net costs over the life of the appliance; and (3) calculating marginal markups in distribution channels to derive the incremental change in retail prices associated with increased manufacturing costs for improving energy efficiency.

McMahon, James E.

2003-06-24T23:59:59.000Z

267

Rugged fiber optic probes and sampling systems for remote chemical analysis via the Raman technique  

DOE Green Energy (OSTI)

Recent advances in fiber optics, diode lasers, CCD detectors, dielectric and holographic optical filters, grating spectrometers, and chemometric data analysis have greatly simplified Raman spectroscopy. In order to make a rugged fiber optic Raman probe for solids/slurries like these at Savannah River, we have designed a probe that eliminates as many optical elements and surfaces as possible. The diffuse reflectance probe tip is modified for Raman scattering by installing thin dielectric in-line filters. Effects of each filter are shown for the NaNO{sub 3} Raman spectrum. By using a diode laser excitation at 780 nm, fluorescence is greatly reduced, and excellent spectra may be obtained from organic solids. At SRS, fiber optic Raman probes are being developed for in situ chemical mapping of radioactive waste storage tanks. Radiation darkening of silica fiber optics is negligible beyond 700 nm. Corrosion resistance is being evaluated. Analysis of process gas (off-gas from SRS processes) is investigated in some detail: hydrogen in nitrogen with NO{sub 2} interference. Other applications and the advantages of the method are pointed out briefly.

Nave, S.E.

1996-07-01T23:59:59.000Z

268

Fluid dynamics in group T-3 Los Alamos national laboratory  

Science Conference Proceedings (OSTI)

The development of computer fluid dynamics has been closely associated with the evolution of large high-speed computers. At first the principal incentive was to produce numerical techniques for solving problems related to national defense. Soon, however, ... Keywords: computational fluid dynamics, history of computing, incompressible flow, multi-field flow, relativistic fluids, strong distortions, turbulence

Francis H. Harlow

2004-04-01T23:59:59.000Z

269

An Analysis Technique for Active Neutron Multiplicity Measurements Based on First Principles  

SciTech Connect

Passive neutron multiplicity counting is commonly used to quantify the total mass of plutonium in a sample, without prior knowledge of the sample geometry. However, passive neutron counting is less applicable to uranium measurements due to the low spontaneous fission rates of uranium. Active neutron multiplicity measurements are therefore used to determine the {sup 235}U mass in a sample. Unfortunately, there are still additional challenges to overcome for uranium measurements, such as the coupling of the active source and the uranium sample. Techniques, such as the coupling method, have been developed to help reduce the dependence of calibration curves for active measurements on uranium samples; although, they still require similar geometry known standards. An advanced active neutron multiplicity measurement method is being developed by Texas A&M University, in collaboration with Los Alamos National Laboratory (LANL) in an attempt to overcome the calibration curve requirements. This method can be used to quantify the {sup 235}U mass in a sample containing uranium without using calibration curves. Furthermore, this method is based on existing detectors and nondestructive assay (NDA) systems, such as the LANL Epithermal Neutron Multiplicity Counter (ENMC). This method uses an inexpensive boron carbide liner to shield the uranium sample from thermal and epithermal neutrons while allowing fast neutrons to reach the sample. Due to the relatively low and constant fission and absorption energy dependent cross-sections at high neutron energies for uranium isotopes, fast neutrons can penetrate the sample without significant attenuation. Fast neutron interrogation therefore creates a homogeneous fission rate in the sample, allowing for first principle methods to be used to determine the {sup 235}U mass in the sample. This paper discusses the measurement method concept and development, including measurements and simulations performed to date, as well as the potential limitations.

Evans, Louise G [Los Alamos National Laboratory; Goddard, Braden [Los Alamos National Laboratory; Charlton, William S [Los Alamos National Laboratory; Peerani, Paolo [European Commission, EC-JRC-IPSC

2012-08-13T23:59:59.000Z

270

Variability of biomass chemical composition and rapid analysis using FT-NIR techniques  

Science Conference Proceedings (OSTI)

A quick method for analyzing the chemical composition of renewable energy biomass feedstock was developed by using Fourier transform near-infrared (FT-NIR) spectroscopy coupled with multivariate analysis. The study presents the broad-based model hypothesis that a single FT-NIR predictive model can be developed to analyze multiple types of biomass feedstock. The two most important biomass feedstocks corn stover and switchgrass were evaluated for the variability in their concentrations of the following components: glucan, xylan, galactan, arabinan, mannan, lignin, and ash. A hypothesis test was developed based upon these two species. Both cross-validation and independent validation results showed that the broad-based model developed is promising for future chemical prediction of both biomass species; in addition, the results also showed the method's prediction potential for wheat straw.

Liu, Lu [University of Tennessee, Knoxville (UTK); Ye, Philip [University of Tennessee, Knoxville (UTK); Womac, A.R. [University of Tennessee; Sokhansanj, Shahabaddine [ORNL

2010-04-01T23:59:59.000Z

271

Aiding Air Force budget analysis with expert system tools and techniques  

SciTech Connect

A system to capture US Air Force financial expertise is currently under development. To accomplish its mission of costing Air Force programs, the Director of the Budget utilizes the services of budget analysts. Analysts are required to prepare three cost exercises during the year: the Program Objective Memorandum (POM), the Budget Estimation Submission (BES), and the President's Budget (PB). Additionally, during budget calls and budget execution, analysts must make decisions regarding funding obligations and outlays. Analysis and modification of outlay projection plans require the use of operational and procedural heuristics. These problem-solving steps followed by analysts are being used to develop a prototype. Information regarding the prototype, the tool, and its capabilities are presented. Additional features of the program are described including integration with existing information management systems.

Hardee, H.K.; Jones, K.A.; Morris, J.D.; Emrich, M.L.; Ali, H.

1987-09-14T23:59:59.000Z

272

Complex Retrieval of Embedded IVC Filters: Alternative Techniques and Histologic Tissue Analysis  

SciTech Connect

Purpose: We evaluated the safety and effectiveness of alternative endovascular methods to retrieve embedded optional and permanent filters in order to manage or reduce risk of long-term complications from implantation. Histologic tissue analysis was performed to elucidate the pathologic effects of chronic filter implantation. Methods: We studied the safety and effectiveness of alternative endovascular methods for removing embedded inferior vena cava (IVC) filters in 10 consecutive patients over 12 months. Indications for retrieval were symptomatic chronic IVC occlusion, caval and aortic perforation, and/or acute PE (pulmonary embolism) from filter-related thrombus. Retrieval was also performed to reduce risk of complications from long-term filter implantation and to eliminate the need for lifelong anticoagulation. All retrieved specimens were sent for histologic analysis. Results: Retrieval was successful in all 10 patients. Filter types and implantation times were as follows: one Venatech (1,495 days), one Simon-Nitinol (1,485 days), one Optease (300 days), one G2 (416 days), five Guenther-Tulip (GTF; mean 606 days, range 154-1,010 days), and one Celect (124 days). There were no procedural complications or adverse events at a mean follow-up of 304 days after removal (range 196-529 days). Histology revealed scant native intima surrounded by a predominance of neointimal hyperplasia and dense fibrosis in all specimens. Histologic evidence of photothermal tissue ablation was confirmed in three laser-treated specimens. Conclusion: Complex retrieval methods can now be used in select patients to safely remove embedded optional and permanent IVC filters previously considered irretrievable. Neointimal hyperplasia and dense fibrosis are the major components that must be separated to achieve successful retrieval of chronic filter implants.

Kuo, William T., E-mail: wkuo@stanford.edu [Stanford University Medical Center, Division of Vascular and Interventional Radiology, Department of Radiology (United States); Cupp, John S. [Stanford University Medical Center, Department of Pathology (United States); Louie, John D.; Kothary, Nishita; Hofmann, Lawrence V.; Sze, Daniel Y.; Hovsepian, David M. [Stanford University Medical Center, Division of Vascular and Interventional Radiology, Department of Radiology (United States)

2012-06-15T23:59:59.000Z

273

Gravity Techniques | Open Energy Information  

Open Energy Info (EERE)

Gravity Techniques Gravity Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Gravity Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Gravity Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Distribution of density in the subsurface enables inference of rock type. Stratigraphic/Structural: Delineation of steeply dipping formations, geological discontinuities and faults, intrusions and the deposition of silicates due to hydrothermal activity. Hydrological: Density of sedimentary rocks are strongly influenced by fluid contained within pore space. Dry bulk density refers to the rock with no moisture, while the wet bulk density accounts for water saturation; fluid content may alter density by up to 30%.(Sharma, 1997)

274

Fluid transport container  

DOE Patents (OSTI)

An improved fluid container for the transport, collection, and dispensing of a sample fluid that maintains the fluid integrity relative to the conditions of the location at which it is taken. More specifically, the invention is a fluid sample transport container that utilizes a fitting for both penetrating and sealing a storage container under controlled conditions. Additionally, the invention allows for the periodic withdrawal of portions of the sample fluid without contamination or intermixing from the environment surrounding the sample container. 13 figs.

DeRoos, B.G.; Downing, J.P. Jr.; Neal, M.P.

1995-11-14T23:59:59.000Z

275

Fluid transport container  

DOE Patents (OSTI)

An improved fluid container for the transport, collection, and dispensing of a sample fluid that maintains the fluid integrity relative to the conditions of the location at which it is taken. More specifically, the invention is a fluid sample transport container that utilizes a fitment for both penetrating and sealing a storage container under controlled conditions. Additionally, the invention allows for the periodic withdrawal of portions of the sample fluid without contamination or intermixing from the environment surrounding the sample container.

DeRoos, Bradley G. (41 James St., Sequim, WA 98382); Downing, Jr., John P. (260 Kala Heights Dr., Port Townsand, WA 98368); Neal, Michael P. (921 Amberly Pl., Columbus, OH 43220)

1995-01-01T23:59:59.000Z

276

Verification of the coupled fluid/solid transfer in a CASL grid-to-rod-fretting simulation : a technical brief on the analysis of convergence behavior and demonstration of software tools for verification.  

SciTech Connect

For a CASL grid-to-rod fretting problem, Sandia's Percept software was used in conjunction with the Sierra Mechanics suite to analyze the convergence behavior of the data transfer from a fluid simulation to a solid mechanics simulation. An analytic function, with properties relatively close to numerically computed fluid approximations, was chosen to represent the pressure solution in the fluid domain. The analytic pressure was interpolated on a sequence of grids on the fluid domain, and transferred onto a separate sequence of grids in the solid domain. The error in the resulting pressure in the solid domain was measured with respect to the analytic pressure. The error in pressure approached zero as both the fluid and solids meshes were refined. The convergence of the transfer algorithm was limited by whether the source grid resolution was the same or finer than the target grid resolution. In addition, using a feature coverage analysis, we found gaps in the solid mechanics code verification test suite directly relevant to the prototype CASL GTRF simulations.

Copps, Kevin D.

2011-12-01T23:59:59.000Z

277

Analysis techniques for power substation grounding systems. Volume 2. User's manual  

SciTech Connect

This User's Manual is provided as an adjunct to the final report on EPRI Research Project 1494-2. The manual is a self-contained document intended to provide detailed and complete instruction on the use of the computer programs developed by the research project. The manual includes user documentation on the two computer programs, entitled SGSYS and SMECC, developed on the contract. Brief program descriptions are followed by operational instructions, data formats, and output specifications. Preceding the program documentation is an introductory section which defines terms and outlines basic elements of grounding system analysis. Following this, a simple but detailed example is given which may be used as a guide in program utilization and also as a test case for individual program users. Following the user documentation is a completed practical example which shows data preparation for a specific substation and computer results obtained for that substation. The example also provides suggested procedures in approaching the problem of substation design using the methodologies developed by this project.

Joy, E.B.; Meliopoulos, A.P.; Webb, R.P.

1983-08-01T23:59:59.000Z

278

DEVELOPMENT OF NEW DRILLING FLUIDS  

SciTech Connect

The goal of the project has been to develop new types of drill-in fluids (DIFs) and completion fluids (CFs) for use in natural gas reservoirs. Phase 1 of the project was a 24-month study to develop the concept of advanced type of fluids usable in well completions. Phase 1 tested this concept and created a kinetic mathematical model to accurately track the fluid's behavior under downhole conditions. Phase 2 includes tests of the new materials and practices. Work includes the preparation of new materials and the deployment of the new fluids and new practices to the field. The project addresses the special problem of formation damage issues related to the use of CFs and DIFs in open hole horizontal well completions. The concept of a ''removable filtercake'' has, as its basis, a mechanism to initiate or trigger the removal process. Our approach to developing such a mechanism is to identify the components of the filtercake and measure the change in the characteristics of these components when certain cleanup (filtercake removal) techniques are employed.

David B. Burnett

2003-08-01T23:59:59.000Z

279

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 3 Global Cellular Lipidome Analyses by Shotgun Lipidomics Using Multidimensional Mass Spectrometry  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 3 Global Cellular Lipidome Analyses by Shotgun Lipidomics Using Multidimensional Mass Spectrometry Methods and Analyses eChapters Methods - Analyses Books 2D17DD82D1DB9F2

280

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 2 An Overview of Modern Mass Spectrometry Methods in the Toolbox of Lipid Chemists and Biochemists  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 2 An Overview of Modern Mass Spectrometry Methods in the Toolbox of Lipid Chemists and Biochemists Methods and Analyses eChapters Methods - Analyses Books Dow

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 13 Use of Cellular Fatty Acids to Identify Food-Borne Pathogens by Infrared Spectroscopy & Capillary GasChromatography  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 13 Use of Cellular Fatty Acids to Identify Food-Borne Pathogens by Infrared Spectroscopy & Capillary GasChromatography Methods and Analyses eChapters Methods - Analyses Bo

282

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 15 Infrared Spectroscopy and Partial Least Square Calibration in Simultaneous Quantification of Isolated trans & CLA  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 15 Infrared Spectroscopy and Partial Least Square Calibration in Simultaneous Quantification of Isolated trans & CLA Methods and Analyses eChapters Methods - Analyses Book

283

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 14 Application of FT-NIR for Rapid Determination of the Trans Fatty Acid Composition in Fats and Oils  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 14 Application of FT-NIR for Rapid Determination of the Trans Fatty Acid Composition in Fats and Oils Methods and Analyses eChapters Methods - Analyses Books

284

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 11 TLC-FID with Special Reference to Marine Lipids and Other High-Molecular-Weight Organic Compounds  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 11 TLC-FID with Special Reference to Marine Lipids and Other High-Molecular-Weight Organic Compounds Methods and Analyses eChapters Methods - Analyses Books D

285

A Diabatic Lagrangian Technique for the Analysis of Convective Storms. Part I: Description and validation via an observing system simulation experiment  

Science Conference Proceedings (OSTI)

A diabatic Lagrangian analysis (DLA) technique for deriving potential temperature, water vapor and cloud water mixing ratios, and virtual buoyancy from three-dimensional, time-dependent Doppler radar wind and reflectivity fields in storms is ...

Conrad L. Ziegler

286

Data and Modeling Techniques | Open Energy Information  

Open Energy Info (EERE)

and Modeling Techniques and Modeling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Data and Modeling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Data and Modeling Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Rock types, rock chemistry, stratigraphic layer organization Stratigraphic/Structural: Stress fields and magnitudes, location and shape of permeable and non-permeable structures, faults, and fracture patterns Hydrological: Visualization and prediction of the flow patterns and characteristics of geothermal fluids, hydrothermal fluid flow characteristics, up-flow patterns

287

DOE-STD-1027-92; Hazard Categorization and Accident Analysis Techniques For Compliance With DOE Order 5480.23, Nuclear Safety Analysis Reports  

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

7-92 7-92 December 1992 CHANGE NOTICE NO.1 September 1997 DOE STANDARD HAZARD CATEGORIZATION AND ACCIDENT ANALYSIS TECHNIQUES FOR COMPLIANCE WITH DOE ORDER 5480.23, NUCLEAR SAFETY ANALYSIS REPORTS U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (423) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE98001283 Change Notice No. 1 DOE-STD-1027-92

288

Analysis of Data from the Barnett Shale with Conventional Statistical and Virtual Intelligence Techniques  

E-Print Network (OSTI)

Water production is a challenge in production operations because it is generally costly to produce, treat, and it can hamper hydrocarbon production. This is especially true for gas wells in unconventional reservoirs like shale because the relatively low gas rates increase the economic impact of water handling costs. Therefore, we have considered the following questions regarding water production from shale gas wells: (1) What is the effect of water production on gas production? (2) What are the different water producing mechanisms? and (3) What is the water production potential of a new well in a given gas shale province. The first question was answered by reviewing relevant literature, highlighting observed deficiencies in previous approaches, and making recommendations for future work. The second question was answered using a spreadsheet based Water-Gas-Ratio analysis tool while the third question was investigated by using artificial neural networks (ANN) to decipher the relationship between completion, fracturing, and water production data. We will consequently use the defined relationship to predict the average water production for a new well drilled in the Barnett Shale. This study also derived additional insight into the production trends in the Barnett shale using standard statistical methods. The following conclusions were reached at the end of the study: 1) The observation that water production does not have long term deleterious effect on gas production from fractured wells in tight gas sands cannot be directly extended to fractured wells in gas shales because the two reservoir types do not have analogous production mechanisms. 2) Based on average operating conditions of well in the Barnett Shale, liquid loading was found to be an important phenomenon; especially for vertical wells. 3) A neural network was successfully used to predict average water production potential from a well drilled in the Barnett shale. Similar methodology can be used to predict average gas production potential. Results from this work can be utilized to mitigate risk of water problems in new Barnett Shale wells and predict water issues in other shale plays. Engineers will be provided a tool to predict potential for water production in new wells.

Awoleke, Obadare O.

2009-12-01T23:59:59.000Z

289

Simulation and performance analysis of basic GAX and advanced GAX cycles with ammonia/water and ammonia/water/LiBr absorption fluids  

Science Conference Proceedings (OSTI)

The generator-absorber heat exchange (GAX) and branched GAX cycles are generally considered with NH{sub 3}/H{sub 2}O as their working fluid. The potential consequences of using a ternary mixture of NH{sub 3}/H{sub 2}O/LiBr (advanced fluids) in the GAX and Branched GAX (advanced cycles) are discussed in this study. A modular steady state absorption simulation model(ABSIM) was used to investigate the potential of combining the above advanced cycles with the advanced fluids. ABSIM is capable of modeling varying cycle configurations with different working fluids. Performance parameters of the cycles, including coefficient of performance (COP) and heat duties, were investigated as functions of different operating parameters in the cooling mode for both the NH {sub 3}/H{sub 2}O binary and the NH{sub 3}/H{sub 2}O/LiBr ternary mixtures. High performance potential of GAX and branched GAX cycles using the NH{sub 3}/H{sub 2}O/LiBr ternary fluid mixture was achieved especially at the high range of firing temperatures exceeding 400{degrees}F. The cooling COP`s have been improved by approximately 21% over the COP achieved with the NH{sub 3}/H{sub 2}O binary mixtures. These results show the potential of using advanced cycles with advanced fluid mixtures (ternary or quaternary fluid mixtures).

Zaltash, A.; Grossman, G.

1996-03-01T23:59:59.000Z

290

Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(5) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electrical Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

291

High-resolution seismic studies applied to injected geothermal fluids  

DOE Green Energy (OSTI)

The application of high-resolution microseismicity studies to the problem of monitoring injected fluids is one component of the Geothermal Injection Monitoring Project at LLNL. The evaluation of microseismicity includes the development of field techniques, and the acquisition and processing of events during the initial development of a geothermal field. To achieve a specific detection threshold and location precision, design criteria are presented for seismic networks. An analysis of a small swarm near Mammoth Lakes, California, demonstrates these relationships and the usefulness of high-resolution seismic studies. A small network is currently monitoring the Mammoth-Pacific geothermal power plant at Casa Diablo as it begins production.

Smith, A.T.; Kasameyer, P.

1985-01-01T23:59:59.000Z

292

Environmentally safe fluid extractor  

DOE Patents (OSTI)

An environmentally safe fluid extraction device for use in mobile laboratory and industrial settings comprising a pump, compressor, valving system, waste recovery tank, fluid tank, and a exhaust filtering system.

Sungaila, Zenon F. (Orland Park, IL)

1993-01-01T23:59:59.000Z

293

Drilling Fluid Corrosion  

Science Conference Proceedings (OSTI)

Table 8   Drilling fluid corrosion control troubleshooting chart...Table 8 Drilling fluid corrosion control troubleshooting chart Corrosion cause Primary source Identification Major corrosion forms Remedies Oxygen Atmosphere, mud conditioning, equipment, oxidizing

294

Application of direct-fitting, mass-integral, and multi-ratemethods to analysis of flowing fluid electric conductivity logs fromHoronobe, Japan  

Science Conference Proceedings (OSTI)

The flowing fluid electric conductivity (FFEC) loggingmethod is an efficient way to provide information on the depths,salinities, and transmissivities of individual conductive featuresintercepted by a borehole, without the use of specialized probes. Usingit in a multiple-flow-rate mode allows, in addition, an estimate of theinherent "far-field" pressure heads in each of the conductive features.The multi-rate method was successfully applied to a 500-m borehole in agranitic formation and reported recently. The present paper presents theapplication of the method to two zones within a 1000-m borehole insedimentary rock, which produced, for each zone, three sets of logs atdifferent pumping rates, each set measured over a period of about oneday. The data sets involve a number of complications, such as variablewell diameter, free water table decline in the well, and effects ofdrilling mud. To analyze data from this borehole, we apply varioustechniques that have been developed for analyzing FFEC logs:direct-fitting, mass-integral, and the multi-rate method mentioned above.In spite of complications associated with the tests, analysis of the datais able to identify 44 hydraulically conducting fractures distributedover the depth interval 150-775 meters below ground surface. Thesalinities (in FEC), and transmissivities and pressure heads (indimensionless form) of these 44 features are obtained and found to varysignificantly among one another. These results are compared with datafrom eight packer tests with packer intervals of 10-80 m, which wereconducted in this borehole over the same depth interval. They are foundto be consistent with these independent packer-test data, thusdemonstrating the robustness of the FFEC logging method under non-idealconditions.

Doughty, C.; Tsang, C.-F.; Hatanaka, K.; Yabuuchi, S.; Kurikami, H.

2007-08-01T23:59:59.000Z

295

Advanced techniques for safety analysis applied to the gas turbine control system of ICARO co-generative plant  

E-Print Network (OSTI)

The paper describes two complementary and integrable approaches, a probabilistic one and a deterministic one, based on classic and advanced modelling techniques for safety analysis of complex computer based systems. The probabilistic approach is based on classical and innovative probabilistic analysis methods. The deterministic approach is based on formal verification methods. Such approaches are applied to the gas turbine control system of ICARO co generative plant, in operation at ENEA CR Casaccia. The main difference between the two approaches, behind the underlining different theories, is that the probabilistic one addresses the control system by itself, as the set of sensors, processing units and actuators, while the deterministic one also includes the behaviour of the equipment under control which interacts with the control system. The final aim of the research, documented in this paper, is to explore an innovative method which put the probabilistic and deterministic approaches in a strong relation to overcome the drawbacks of their isolated, selective and fragmented use which can lead to inconsistencies in the evaluation results. 1.

Ro Bologna; Ester Ciancamerla; Piero Incalcaterra; Michele Minichino; Andrea Bobbio; Universit Del Piemonte Orientale; Enrico Tronci

2001-01-01T23:59:59.000Z

296

Fluid Suspensions & Emulsions  

Science Conference Proceedings (OSTI)

Fluid Suspensions & Emulsions. Summary: Our primary interest is protein ... protein solutions? 1. Health & Safety. There is ongoing ...

2013-09-29T23:59:59.000Z

297

Inkjet printing of non-Newtonian fluids  

E-Print Network (OSTI)

G. Harlen; Department of Applied Mathematics; University of Leeds, Leeds, LS2 9JT, U.K. Abstract Jet breakup is strongly affected by fluid rheology. In par- ticular, small amounts of polymer can cause substantially differ- ent breakup dynamics... fluid dynamics (2008) from the University of Cambridge. Since then he has worked at the Department of Applied Mathematics at the University of Leeds. His recent research involves the development of computational techniques for the simulation of flows...

Morrison, N.F.; Harlen, O.G.

2011-01-01T23:59:59.000Z

298

Spinning fluid cosmology  

E-Print Network (OSTI)

The dynamics of a spinning fluid in a flat cosmological model is investigated. The space-time is itself generated by the spinning fluid which is characterized by an energy-momentum tensor consisting a sum of the usual perfect-fluid energy-momentum tensor and some Belinfante-Rosenfeld tensors. It is shown that the equations of motion admit a solution for which the fluid four-velocity and four-momentum are not co-linear in general. The momentum and spin densities of the fluid are expressed in terms of the scale factor.

Morteza Mohseni

2008-07-22T23:59:59.000Z

299

Spinning fluid cosmology  

E-Print Network (OSTI)

The dynamics of a spinning fluid in a flat cosmological model is investigated. The space-time is itself generated by the spinning fluid which is characterized by an energy-momentum tensor consisting a sum of the usual perfect-fluid energy-momentum tensor and some Belinfante-Rosenfeld tensors. It is shown that the equations of motion admit a solution for which the fluid four-velocity and four-momentum are not co-linear in general. The momentum and spin densities of the fluid are expressed in terms of the scale factor.

Mohseni, Morteza

2008-01-01T23:59:59.000Z

300

Spinning fluids reactor  

SciTech Connect

A spinning fluids reactor, includes a reactor body (24) having a circular cross-section and a fluid contactor screen (26) within the reactor body (24). The fluid contactor screen (26) having a plurality of apertures and a circular cross-section concentric with the reactor body (24) for a length thus forming an inner volume (28) bound by the fluid contactor screen (26) and an outer volume (30) bound by the reactor body (24) and the fluid contactor screen (26). A primary inlet (20) can be operatively connected to the reactor body (24) and can be configured to produce flow-through first spinning flow of a first fluid within the inner volume (28). A secondary inlet (22) can similarly be operatively connected to the reactor body (24) and can be configured to produce a second flow of a second fluid within the outer volume (30) which is optionally spinning.

Miller, Jan D; Hupka, Jan; Aranowski, Robert

2012-11-20T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Demonstration of a Computational Fluid Dynamics (CFD) Tool Used...  

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

Demonstration of a Computational Fluid Dynamics (CFD) Tool Used for Data Center Modeling, Thermal Analysis and Operational Management Speaker(s): Saket Karajgikar Date: November...

302

Implementation of an analytical verification technique on three building energy-analysis codes: SUNCAT 2. 4, DOE 2. 1, and DEROB III  

DOE Green Energy (OSTI)

An analytical verification technique for building energy analysis codes has been developed. For this technique, building models are developed that can be both solved analytically and modeled using the analysis codes. The output of the codes is then compared with the analytical solutions. In this way, the accuracy of selected mechanisms in the codes can be verified. The procedure consists of several tests and was run on SUNCAT 2.4, DOE 2.1, and DEROB III. The results are presented and analyzed.

Wortman, D.; O'Doherty, B.; Judkoff, R.

1981-01-01T23:59:59.000Z

303

Well Log Techniques | Open Energy Information  

Open Energy Info (EERE)

Well Log Techniques Well Log Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Well Log Techniques Details Activities (4) Areas (4) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: depth and thickness of formations; lithology and porosity can be inferred Stratigraphic/Structural: reservoir thickness, reservoir geometry, borehole geometry Hydrological: permeability and fluid composition can be inferred Thermal: direct temperature measurements; thermal conductivity and heat capacity Dictionary.png Well Log Techniques: Well logging is the measurement of formation properties versus depth in a

304

Definition: Downhole Fluid Sampling | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Downhole Fluid Sampling Jump to: navigation, search Dictionary.png Downhole Fluid Sampling Downhole fluid sampling is done to characterize the chemical, thermal, or hydrological properties of a surface or subsurface aqueous system. Downhole fluid sampling is typically performed to monitor water quality, study recharge and flow in groundwater systems, and evaluate resource potential of geothermal reservoirs. Analysis of both the liquid and gas fractions of the reservoir fluid allows for detailed characterize the chemical, thermal, or hydrological properties of the subsurface hydrothermal system. View on Wikipedia Wikipedia Definition Ret Like Like You like this.Sign Up to see what your friends like.

305

Materials Science and Engineering B 117 (2005) 5361 Finite element analysis-based design of a fluid-flow control nano-valve  

E-Print Network (OSTI)

of a fluid-flow control nano-valve M. Grujicica,, G. Caoa, B. Pandurangana, W.N. Royb a Department A finite element method-based procedure is developed for the design of molecularly functionalized nano-size devices. The procedure is aimed at the single-walled carbon nano-tubes (SWCNTs) used in the construction

Grujicic, Mica

306

Microwave fluid flow meter  

DOE Patents (OSTI)

A microwave fluid flow meter is described utilizing two spaced microwave sensors positioned along a fluid flow path. Each sensor includes a microwave cavity having a frequency of resonance dependent upon the static pressure of the fluid at the sensor locations. The resonant response of each cavity with respect to a variation in pressure of the monitored fluid is represented by a corresponding electrical output which can be calibrated into a direct pressure reading. The pressure drop between sensor locations is then correlated as a measure of fluid velocity. In the preferred embodiment the individual sensor cavities are strategically positioned outside the path of fluid flow and are designed to resonate in two distinct frequency modes yielding a measure of temperature as well as pressure. The temperature response can then be used in correcting for pressure responses of the microwave cavity encountered due to temperature fluctuations.

Billeter, Thomas R. (Richland, WA); Philipp, Lee D. (Richland, WA); Schemmel, Richard R. (Lynchburg, VA)

1976-01-01T23:59:59.000Z

307

Complex Fluids Group  

Science Conference Proceedings (OSTI)

... applications in energy, sustainability, electronics and medicine. As these materials are typically in the fluid state during their production or end-use ...

2013-05-14T23:59:59.000Z

308

Working/Functional Fluids  

Science Conference Proceedings (OSTI)

... power cycle except that it uses an organic working fluid instead of water to allow operation at lower temperatures, including geothermal or solar ...

2012-10-05T23:59:59.000Z

309

Isotopic Analysis At Central Nevada Seismic Zone Region (Kennedy & Van  

Open Energy Info (EERE)

Isotopic Analysis At Central Nevada Seismic Zone Region (Kennedy & Van Isotopic Analysis At Central Nevada Seismic Zone Region (Kennedy & Van Soest, 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Central Nevada Seismic Zone Region (Kennedy & Van Soest, 2007) Exploration Activity Details Location Central Nevada Seismic Zone Geothermal Region Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful regional reconnaissance DOE-funding Unknown Notes The correspondence of helium isotope ratios and active transtensional deformation indicates a deformation-enhanced permeability and that mantle fluids can penetrate the ductile lithosphere, even in regions where there is no substantial magmatism. Superimposed on the regional trend are local,

310

Lipid Analysis and Lipidomics: New Techniques & ApplicationChapter 7 Recent Advances in Silver-Ion HPLC Utilizing Acetonitrile in Hexane as Solvent  

Science Conference Proceedings (OSTI)

Lipid Analysis and Lipidomics: New Techniques & Application Chapter 7 Recent Advances in Silver-Ion HPLC Utilizing Acetonitrile in Hexane as Solvent Methods and Analyses eChapters Methods - Analyses Books F98F563E606CED1FD3744F0D6362BAB2

311

Geochemical Techniques | Open Energy Information  

Open Energy Info (EERE)

Geochemical Techniques Geochemical Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Geochemical Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geochemical Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Geochemical Techniques: No definition has been provided for this term. Add a Definition Related Techniques Geochemical Techniques Geochemical Data Analysis Geothermometry Gas Geothermometry Isotope Geothermometry Liquid Geothermometry Cation Geothermometers Multicomponent Geothermometers Silica Geothermometers Thermal Ion Dispersion

312

Magnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Magnetic Techniques Magnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Magnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Magnetic Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Presence of magnetic minerals such as magnetite. Stratigraphic/Structural: Mapping of basement structures, horst blocks, fault systems, fracture zones, dykes and intrusions. Hydrological: The circulation of hydrothermal fluid may impact the magnetic susceptibility of rocks. Thermal: Rocks lose their magnetic properties at the Curie temperature (580° C for magnetite) [1] and, upon cooling, remagnetize in the present magnetic field orientation. The Curie point depth in the subsurface may be determined in a magnetic survey to provide information about hydrothermal activity in a region.

313

Active Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Active Seismic Techniques Active Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Active Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

314

Borehole Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Borehole Seismic Techniques Borehole Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Borehole Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Borehole Seismic Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation Thermal: High temperatures and pressure impact the compressional and shear wave velocities

315

Passive Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Passive Seismic Techniques Passive Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Passive Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(4) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

316

FLUID INCLUSION STRATIGRAPHY: NEW METHOD FOR GEOTHERMAL RESERVOIR  

Open Energy Info (EERE)

FLUID INCLUSION STRATIGRAPHY: NEW METHOD FOR GEOTHERMAL RESERVOIR FLUID INCLUSION STRATIGRAPHY: NEW METHOD FOR GEOTHERMAL RESERVOIR ASSESSMENT PRELIMINARY RESULTS Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: FLUID INCLUSION STRATIGRAPHY: NEW METHOD FOR GEOTHERMAL RESERVOIR ASSESSMENT PRELIMINARY RESULTS Details Activities (1) Areas (1) Regions (0) Abstract: Fluid Inclusion Stratigraphy (FIS) is a new technique developed for the oil industry in order to map borehole fluids. This method is being studied for application to geothermal wells and is funded by the California Energy Commission. Fluid inclusion gas geochemistry is analyzed and plotted on well log diagrams. The working hypothesis is that select gaseous species and species ratios indicate areas of groundwater and reservoir fluid flow

317

Laboratory apparatus and operating procedures for determining the long-term environmental fate of EOR chemicals and other waste fluids  

SciTech Connect

The objective of NIPER's EOR Environmental Compatibility project, BE3A, is to determine the compatibilities and potential long term environmental effects of EOR chemicals and injected waste fluids with reservoir fluids and rocks. To aid in this effort, a coreflooding system and injection/analysis procedures were designed. The system consists primarily of a Bureau of Mines stainless steel autoclave, or optional Hassler holder, pumps, and associated hardware. The system uses proven core flooding techniques, and may be used at moderately elevated temperatures and pressures. This report describes the apparatus and procedures involved in performing the research. 1 ref., 4 figs.

Kayser, M.B.; Collins, A.G.

1985-11-01T23:59:59.000Z

318

Supercritical Fluid Extraction  

E-Print Network (OSTI)

In supercritical fluid extraction, many options are available for achieving and controlling the desired selectivity, which is extremely sensitive to variations in pressure, temperature, and choice of solvent. The ability of supercritical fluids to vaporize relatively nonvolatile compounds at moderate temperatures can reduce the energy requirements compared to distillation and liquid extraction.

Johnston, K. P.; Flarsheim, W. M.

1984-01-01T23:59:59.000Z

319

Heat Transfer in Complex Fluids  

SciTech Connect

Amongst the most important constitutive relations in Mechanics, when characterizing the behavior of complex materials, one can identify the stress tensor T, the heat flux vector q (related to heat conduction) and the radiant heating (related to the radiation term in the energy equation). Of course, the expression 'complex materials' is not new. In fact, at least since the publication of the paper by Rivlin & Ericksen (1955), who discussed fluids of complexity (Truesdell & Noll, 1992), to the recently published books (Deshpande et al., 2010), the term complex fluids refers in general to fluid-like materials whose response, namely the stress tensor, is 'non-linear' in some fashion. This non-linearity can manifest itself in variety of forms such as memory effects, yield stress, creep or relaxation, normal-stress differences, etc. The emphasis in this chapter, while focusing on the constitutive modeling of complex fluids, is on granular materials (such as coal) and non-linear fluids (such as coal-slurries). One of the main areas of interest in energy related processes, such as power plants, atomization, alternative fuels, etc., is the use of slurries, specifically coal-water or coal-oil slurries, as the primary fuel. Some studies indicate that the viscosity of coal-water mixtures depends not only on the volume fraction of solids, and the mean size and the size distribution of the coal, but also on the shear rate, since the slurry behaves as shear-rate dependent fluid. There are also studies which indicate that preheating the fuel results in better performance, and as a result of such heating, the viscosity changes. Constitutive modeling of these non-linear fluids, commonly referred to as non-Newtonian fluids, has received much attention. Most of the naturally occurring and synthetic fluids are non-linear fluids, for example, polymer melts, suspensions, blood, coal-water slurries, drilling fluids, mud, etc. It should be noted that sometimes these fluids show Newtonian (linear) behavior for a given range of parameters or geometries; there are many empirical or semi-empirical constitutive equations suggested for these fluids. There have also been many non-linear constitutive relations which have been derived based on the techniques of continuum mechanics. The non-linearities oftentimes appear due to higher gradient terms or time derivatives. When thermal and or chemical effects are also important, the (coupled) momentum and energy equations can give rise to a variety of interesting problems, such as instability, for example the phenomenon of double-diffusive convection in a fluid layer. In Conclusion, we have studied the flow of a compressible (density gradient type) non-linear fluid down an inclined plane, subject to radiation boundary condition. The heat transfer is also considered where a source term, similar to the Arrhenius type reaction, is included. The non-dimensional forms of the equations are solved numerically and the competing effects of conduction, dissipation, heat generation and radiation are discussed. It is observed that the velocity increases rapidly in the region near the inclined surface and is slower in the region near the free surface. Since R{sub 7} is a measure of the heat generation due to chemical reaction, when the reaction is frozen (R{sub 7}=0.0) the temperature distributions would depend only on R{sub 1}, and R{sub 2}, representing the effects of the pressure force developed in the material due to the distribution, R{sub 3} and R{sub 4} viscous dissipation, R{sub 5} the normal stress coefficient, R{sub 6} the measure of the emissivity of the particles to the thermal conductivity, etc. When the flow is not frozen (RP{sub 7} > 0) the temperature inside the flow domain is much higher than those at the inclined and free surfaces. As a result, heat is transferred away from the flow toward both the inclined surface and the free surface with a rate that increases as R{sub 7} increases. For a given temperature, an increase in {zeta} implies that the activation energy is smaller and thus, the reaction ra

Mehrdad Massoudi

2012-01-01T23:59:59.000Z

320

Supercritical Fluid Assisted Synthesis and Processing of Carbon Nanotubes  

Science Conference Proceedings (OSTI)

Carbon nanotubes (CNTs) constitute one of the most fascinating nanomaterials with specific properties and enormous applications. Taking advantages of the unique properties of supercritical fluids (SCFs), various techniques have been developed to produce and process CNTs and related nanostructured materials when conventional techniques become unviable. Herein we propose a critical review of these SCF based techniques. The most relevant characteristics of each technique and the enabled novel structures and functions which are difficult to accomplish by traditional techniques are highlighted.

Ye, Sufang; Wu, Fengming; Ye, Xiangrong; Lin, Yuehe

2009-03-26T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID...  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: TRACING...

322

FRACTURING FLUID CHARACTERIZATION FACILITY  

SciTech Connect

Hydraulic fracturing technology has been successfully applied for well stimulation of low and high permeability reservoirs for numerous years. Treatment optimization and improved economics have always been the key to the success and it is more so when the reservoirs under consideration are marginal. Fluids are widely used for the stimulation of wells. The Fracturing Fluid Characterization Facility (FFCF) has been established to provide the accurate prediction of the behavior of complex fracturing fluids under downhole conditions. The primary focus of the facility is to provide valuable insight into the various mechanisms that govern the flow of fracturing fluids and slurries through hydraulically created fractures. During the time between September 30, 1992, and March 31, 2000, the research efforts were devoted to the areas of fluid rheology, proppant transport, proppant flowback, dynamic fluid loss, perforation pressure losses, and frictional pressure losses. In this regard, a unique above-the-ground fracture simulator was designed and constructed at the FFCF, labeled ''The High Pressure Simulator'' (HPS). The FFCF is now available to industry for characterizing and understanding the behavior of complex fluid systems. To better reflect and encompass the broad spectrum of the petroleum industry, the FFCF now operates under a new name of ''The Well Construction Technology Center'' (WCTC). This report documents the summary of the activities performed during 1992-2000 at the FFCF.

Subhash Shah

2000-08-01T23:59:59.000Z

323

APS 7-BM Beamline: Techniques  

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

Motivation Motivation The major thrust of the 7-BM beamline is the application of synchrotron radiation tools to examine complex fluid flowfields. Two major techniques are applied: radiography and x-ray fluorescence spectroscopy. While optical techniques are often ideally suited to the study of fluid flowfields, there are certain flowfields for which optical diagnostics have significant challenges. These include: Multiphase flows: Visible light interacts strongly with phase boundaries. This leads to strong refraction, scattering, and attenuation of light. These effects hinder quantitative measurements of dense multiphase flowfields. Opaque media. Flows with strong refractive effects. Luminous flames: The strong light emission from sooting flames can hinder certain optical diagnostics.

324

Supercritical fluid extraction  

DOE Patents (OSTI)

A method of extracting metalloid and metal species from a solid or liquid material by exposing the material to a supercritical fluid solvent containing a chelating agent. The chelating agent forms chelates that are soluble in the supercritical fluid to allow removal of the species from the material. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is a fluorinated or lipophilic crown ether or fluorinated dithiocarbamate. The method provides an environmentally benign process for removing contaminants from industrial waste without using acids or biologically harmful solvents. The chelate and supercritical fluid can be regenerated, and the contaminant species recovered, to provide an economic, efficient process.

Wai, Chien M. (Moscow, ID); Laintz, Kenneth (Pullman, WA)

1994-01-01T23:59:59.000Z

325

Seismoelectric Phenomena in Fluid-Saturated Sediments  

SciTech Connect

Seismoelectric phenomena in sediments arise from acoustic wave-induced fluid motion in the pore space, which perturbs the electrostatic equilibrium of the electric double layer on the grain surfaces. Experimental techniques and the apparatus built to study this electrokinetic (EK) effect are described and outcomes for studies of seismoelectric phenomena in loose glass microspheres and medium-grain sand are presented. By varying the NaCl concentration in the pore fluid, we measured the conductivity dependence of two kinds of EK behavior: (1) the electric fields generated within the samples by the passage of transmitted acoustic waves, and (2) the electromagnetic wave produced at the fluid-sediment interface by the incident acoustic wave. Both phenomena are caused by relative fluid motion in the sediment pores--this feature is characteristic of poroelastic (Biot) media, but not predicted by either viscoelastic fluid or solid models. A model of plane-wave reflection from a fluid-sediment interface using EK-Biot theory leads to theoretical predictions that compare well to the experimental data for both sand and glass microspheres.

Block, G I; Harris, J G

2005-04-22T23:59:59.000Z

326

IDENTIFYING FRACTURES AND FLUID TYPES USING FLUID INCLUSION STRATIGRAPHY |  

Open Energy Info (EERE)

IDENTIFYING FRACTURES AND FLUID TYPES USING FLUID INCLUSION STRATIGRAPHY IDENTIFYING FRACTURES AND FLUID TYPES USING FLUID INCLUSION STRATIGRAPHY Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: IDENTIFYING FRACTURES AND FLUID TYPES USING FLUID INCLUSION STRATIGRAPHY Details Activities (1) Areas (1) Regions (0) Abstract: Fluid Inclusion Stratigraphy (FIS) is a method currently being developed for use in geothermal systems to identify fractures and fluid types. This paper is the third in a series of papers on the development of FIS. Fluid inclusion gas chemistry is analyzed and plotted on well log diagrams. The working hypothesis is that select gaseous species and species ratios indicate areas of groundwater and reservoir fluid flow and reservoir seals. Previously we showed that FIS analyses identify fluid types and

327

Fluid injection for salt water disposal and enhanced oil recovery as a potential problem for the WIPP: Proceedings of a June 1995 workshop and analysis  

SciTech Connect

The Waste Isolation Pilot Plant (WIPP) is a facility of the U.S. Department of Energy (DOE), designed and constructed for the permanent disposal of transuranic (TRU) defense waste. The repository is sited in the New Mexico portion of the Delaware Basin, at a depth of 655 meters, in the salt beds of the Salado Formation. The WIPP is surrounded by reserves and production of potash, crude oil and natural gas. In selecting a repository site, concerns about extensive oil field development eliminated the Mescalero Plains site in Chaves County and concerns about future waterflooding in nearby oil fields helped eliminate the Alternate II site in Lea County. Ultimately, the Los Medanos site in Eddy County was selected, relying in part on the conclusion that there were no oil reserves at the site. For oil field operations, the problem of water migrating from the injection zone, through other formations such as the Salado, and onto adjacent property has long been recognized. In 1980, the DOE intended to prohibit secondary recovery by waterflooding in one mile buffer surrounding the WIPP Site. However, the DOE relinquished the right to restrict waterflooding based on a natural resources report which maintained that there was a minimal amount of crude oil likely to exist at the WIPP site, hence waterflooding adjacent to the WIPP would be unlikely. This document presents the workshop presentations and analyses for the fluid injection for salt water disposal and enhanced oil recovery utilizing fluid injection and their potential effects on the WIPP facility.

Silva, M.K.

1996-08-01T23:59:59.000Z

328

Application of Cutting Fluids  

Science Conference Proceedings (OSTI)

...is transferred to the drill by a rotating gland and is forced directly into the cutting zone. The fluid flowing from the hole assists in chip removal. Oil-hole drills have become very popular in

329

Basic fluid system trainer  

DOE Patents (OSTI)

This invention, a trainer mounted and housed within a mobile console, is used to teach and reinforce fluid principles to students. The system trainer has two centrifugal pumps, each driven by a corresponding two-speed electric motor. The motors are controlled by motor controllers for operating the pumps to circulate the fluid stored within a supply tank through a closed system. The pumps may be connected in series or in parallel. A number of valves are also included within the system to effect different flow paths for the fluid. In addition, temperature and pressure sensing instruments are installed throughout the closed system for measuring the characteristics of the fluid, as it passes through the different valves and pumps. These measurements are indicated on a front panel mounted to the console, as a teaching aid, to allow the students to observe the characteristics of the system.

Semans, J.P.; Johnson, P.G.; LeBoeuf, R.F. Jr.; Kromka, J.A.; Goron, R.H.; Hay, G.D.

1991-04-30T23:59:59.000Z

330

Basic fluid system trainer  

DOE Patents (OSTI)

A trainer, mounted and housed within a mobile console, is used to teach and reinforce fluid principles to students. The system trainer has two centrifugal pumps, each driven by a corresponding two-speed electric motor. The motors are controlled by motor controllers for operating the pumps to circulate the fluid stored within a supply tank through a closed system. The pumps may be connected in series or in parallel. A number of valves are also included within the system to effect different flow paths for the fluid. In addition, temperature and pressure sensing instruments are installed throughout the closed system for measuring the characteristics of the fluid, as it passes through the different valves and pumps. These measurements are indicated on a front panel mounted to the console, as a teaching aid, to allow the students to observe the characteristics of the system.

Semans, Joseph P. (Uniontown, PA); Johnson, Peter G. (Pittsburgh, PA); LeBoeuf, Jr., Robert F. (Clairton, PA); Kromka, Joseph A. (Idaho Falls, ID); Goron, Ronald H. (Connellsville, PA); Hay, George D. (Venetia, PA)

1993-01-01T23:59:59.000Z

331

Phoresis in fluids  

E-Print Network (OSTI)

This paper presents a unified theory of phoretic phenomena in single-component fluids. Simple formulas are given for the phoretic velocities of small inert force-free non-Brownian particles migrating through otherwise ...

Brenner, Howard

332

Post-processing of polymer foam tissue scaffolds with high power ultrasound: a route to increased pore interconnectivity, pore size and fluid transport  

E-Print Network (OSTI)

We expose thick polymer foam tissue scaffolds to high power ultrasound and study its effect on the openness of the pore architecture and fluid transport through the scaffold. Our analysis is supported by measurements of fluid uptake during insonification and imaging of the scaffold microstructure via x-ray computed tomography, scanning electron microscopy and acoustic microscopy. The ultrasonic treatment is found to increase the mean pore size by over 10%. More striking is the improvement in fluid uptake: for scaffolds with only 40% water uptake via standard immersion techniques, we can routinely achieve full saturation of the scaffold over approximately one hour of exposure. These desirable modifications occur with no loss of scaffold integrity and negligible mass loss, and are optimized when the ultrasound treatment is coupled to a pre-wetting stage with ethanol. Our findings suggest that high power ultrasound is a highly targetted and efficient means to promote pore interconnectivity and fluid transport in...

Watson, N J; Reinwald, Y; White, L J; Ghaemmaghami, A M; Morgan, S P; Rose, F R A J; Povey, M J W; Parker, N G

2013-01-01T23:59:59.000Z

333

Post-processing of polymer foam tissue scaffolds with high power ultrasound: a route to increased pore interconnectivity, pore size and fluid transport  

E-Print Network (OSTI)

We expose thick polymer foam tissue scaffolds to high power ultrasound and study its effect on the openness of the pore architecture and fluid transport through the scaffold. Our analysis is supported by measurements of fluid uptake during insonification and imaging of the scaffold microstructure via x-ray computed tomography, scanning electron microscopy and acoustic microscopy. The ultrasonic treatment is found to increase the mean pore size by over 10%. More striking is the improvement in fluid uptake: for scaffolds with only 40% water uptake via standard immersion techniques, we can routinely achieve full saturation of the scaffold over approximately one hour of exposure. These desirable modifications occur with no loss of scaffold integrity and negligible mass loss, and are optimized when the ultrasound treatment is coupled to a pre-wetting stage with ethanol. Our findings suggest that high power ultrasound is a highly targetted and efficient means to promote pore interconnectivity and fluid transport in thick foam tissue scaffolds.

N J Watson; R K Johal; Y Reinwald; L J White; A M Ghaemmaghami; S P Morgan; F R A J Rose; M J W Povey; N G Parker

2013-02-18T23:59:59.000Z

334

A comparison of two data analysis techniques and their applications for modeling the carbon dioxide capture process  

Science Conference Proceedings (OSTI)

Improving the efficiency of the carbon dioxide (CO"2) capture process requires a good understanding of the intricate relationships among parameters involved in the process. The objective of this research is to study the nature of relationships among ... Keywords: CO2 capture process, Data modeling, Neural network, Sensitivity analysis, Statistical analysis

Yuxiang Wu; Qing Zhou; Christine W. Chan

2010-12-01T23:59:59.000Z

335

Comparison of acoustic impedance and time-amplitude analysis techniques for reservoir description of a Gulf of Mexico shelf edge Clastic Field  

SciTech Connect

Post-stack, time-amplitude techniques are routinely used in the estimation of reserves and the positioning of wells in low impedance, unconsolidated reservoir sands in the offshore Gulf of Mexico (Texas and Louisiana). Time amplitude analysis of 3D seismic data, when properly calibrated, can yield reliable estimates of net hydrocarbon pay, reservoir distribution, and volumetrics. Acoustic impedance (Al) analysis can also be used for such prospect appraisal and development work. However, the combined use of both techniques for reservoir description is not common. Some advantages in acoustic impedance (over amplitude analysis) are: (1) properly constrained Al traces better image the reservoir rock configuration (that is, they provide a more [open quotes]geologic[close quotes] view) thereby facilitating interpretation of reservoir distribution and interconnectivity, and (2) Al volumetrics methodology can provide more accurate estimates of average pay for reservoirs that are not seismically isolated from one another. A possible disadvantage is the difficulty in incorporating a proper baseline (low frequency) constraint for the required Al trace inversion. This paper reports the advantages and disadvantages of both techniques in characterizing net pay, volumetrics, and reservoir continuity in a producing Gulf of Mexico oil field in a shelf-edge delta depositional system.

Rowlett, H.E.; Holcombe, H.T.; Cohn, B.P.; Wilson, W.W.; Mills, W.H. (BP Exploration Inc., Houston, TX (United States))

1993-02-01T23:59:59.000Z

336

MEASUREMENT OF INTERFACIAL TENSION IN FLUID-FLUID SYSTEMS  

E-Print Network (OSTI)

Interfacial tension at fluid-fluid interfaces is a reflection of the excess energy associated with unsaturated in parts per million concentration (27). DYNAMIC INTERFACIAL TENSION MEASUREMENTS In fluid-fluid systems, detergency, foam or froth generation, and stability (3). In these pro- cesses, dynamic interfacial tensions

Loh, Watson

337

Analysis of the omnium-g receiver  

DOE Green Energy (OSTI)

A thermal analysis of the Omnium-G receiver is presented and the technique is shown to be generally applicable to solar thermal receivers utilizing a directly heated thermal mass. The thermal loss coefficient, including reradiation losses, is calculated and shown to agree quite well with the experimentally measured thermal loss coefficient. The rate of heat transfer to the working fluid is also analyzed and the analysis is used to show that the Omnium-G receiver is well matched to the water/steam working fluid because the steam outlet temperature is almost the same as the receiver temperature. A general procedure for calculating receiver performance is presented. With this procedure, the energy delivery to any working fluid, the delivered temperature of the working fluid, and the pressure drop through the receiver can be determined. An example of the calculation is also presented.

Bohn, M.

1980-03-01T23:59:59.000Z

338

Supercritical Fluid Extraction Applications in the Process Industries  

E-Print Network (OSTI)

Supercritical fluid extraction (SFE), a separations technique, has recently attracted the attention of the process industries. SFE is based on the observation that a fluid exhibits enhanced solvating ability when compressed at temperatures near its critical temperature to pressures greater than its critical pressure. This extraction process can, under certain circumstances, offer economic advantages comparable to those of conventional separation techniques. Several commercial supercritical processes are currently in operation in the United States and Europe, and new industrial applications are emerging. In this paper, the current and future applications of supercritical fluid technology and the prospects for implementing an SFE operation on an industrial scale are reviewed.

Lahiere, R. J.; Fair, J. R.; Humphrey, J. L.

1985-05-01T23:59:59.000Z

339

The generalized van der Waals theory of pure fluids and mixtures  

Science Conference Proceedings (OSTI)

This report discusses functional group analysis and partition function analysis of pure fluids and mixtures using generalized van der waals theory. (LSP)

Sandler, S.I.

1990-06-01T23:59:59.000Z

340

Field application of lightweight, hollow-glass-sphere drilling fluid  

Science Conference Proceedings (OSTI)

A new class of underbalanced drilling fluids being developed under US Dept. of Energy (US DOE) sponsorship was recently successfully field tested. The fluid uses hollow glass spheres (HGS`s) to decrease the fluid density to less than that of the base mud while maintaining incompressibility. Concentrations of up to 20 vol% were used to decrease the fluid density to 0.8 lbm/gal less than normally used in the field. Potential benefits of using these fluids include higher penetration rates, decreased formation damage, and lost-circulation mitigation. When used in place of aerated fluid, they can eliminate compressor usage and allow the use of mud-pulse measurement-while-drilling tools. These and other recent advances in technology have spurred interest in underbalanced drilling to the highest level in 30 years. Industry-wide surveys indicate that more than 12% of wells drilled in the US in 1997 will intentionally use underbalanced techniques.

NONE

1997-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Analysis of the Window Side Thermal Environment Formed by Air Barrier Technique in Winter Conditions and Its Economy  

E-Print Network (OSTI)

The air barrier technique applies airflow through a window fan to decrease the heat load of a window surface and avoid dewfall in winter and decrease heat radiation from the window surface in summer. This paper uses numerical simulation to predict the energy-saving potential and thermal comfort of the air barrier technique used in office buildings. It also analyzes the surface temperature of the window by using the simulation software Airpak. According to the results, we can obtain the key control strategy of this technology. It can be found that the air barrier technique, instead of the heating-supply around outside-zone for office building, can avoid dewfall in winter and decrease the cold radiation, which has a great effect on thermal environment around the window. Characteristics such as outer air temperature, indoor load, thermal characteristics of structure, and air-supply parameters through window fans are analyzed in detail to measure their effects on energy consumption, window side environment and PMV values. The paper provides theoretical reference and technical guidance for applying air barrier technology correctly, improving the window side environment and reducing energy consumption.

Huang, C.; Jia, Y.; Liu, L.; Wang, X.

2006-01-01T23:59:59.000Z

342

Lecture notes Ideal fluid mechanics  

E-Print Network (OSTI)

involves energy loss--such fluids are known as viscous fluids--we will not consider them here. Some fluids of the basic equations underlying the dynamics of ideal fluids is based on three basic principles (see Chorin. Conservation of energy, energy is neither created nor destroyed. In turn these principles generate the: 1

Malham, Simon J.A.

343

SWN Nets as a Framework for the Specification and the Analysis of FT Techniques Adopted in Electric Plant Automation  

Science Conference Proceedings (OSTI)

The use of formal methods for specification and analysis of dependable systems is considered a promising opportunity to support the evaluation of critical issues since the early design phases. Stochastic Petri nets can play an important role not only ...

Lorenzo Capra; Rossano Gaeta; Oliver Botti

1999-06-01T23:59:59.000Z

344

A one-group parametric sensitivity analysis for the graphite isotope ratio method and other related techniques using ORIGEN 2.2  

E-Print Network (OSTI)

Several methods have been developed previously for estimating cumulative energy production and plutonium production from graphite-moderated reactors. The Graphite Isotope Ratio Method (GIRM) is one well-known technique. This method is based on the measurement of trace isotopes in the reactors graphite matrix to determine the change in their isotopic ratios due to burnup. These measurements are then coupled with reactor calculations to determine the total plutonium and energy production of the reactor. To facilitate sensitivity analysis of these methods, a one-group cross section and fission product yield library for the fuel and graphite activation products has been developed for MAGNOX-style reactors. This library is intended for use in the ORIGEN computer code, which calculates the buildup, decay, and processing of radioactive materials. The library was developed using a fuel cell model in Monteburns. This model consisted of a single fuel rod including natural uranium metal fuel, magnesium cladding, carbon dioxide coolant, and Grade A United Kingdom (UK) graphite. Using this library a complete sensitivity analysis can be performed for GIRM and other techniques. The sensitivity analysis conducted in this study assessed various input parameters including 235U and 238U cross section values, aluminum alloy concentration in the fuel, and initial concentrations of trace elements in the graphite moderator. The results of the analysis yield insight into the GIRM method and the isotopic ratios the method uses as well as the level of uncertainty that may be found in the system results.

Chesson, Kristin Elaine

2007-08-01T23:59:59.000Z

345

Boiler using combustible fluid  

DOE Patents (OSTI)

A fluid fuel boiler is described comprising a combustion chamber, a cover on the combustion chamber having an opening for introducing a combustion-supporting gaseous fluid through said openings, means to impart rotation to the gaseous fluid about an axis of the combustion chamber, a burner for introducing a fluid fuel into the chamber mixed with the gaseous fluid for combustion thereof, the cover having a generally frustro-conical configuration diverging from the opening toward the interior of the chamber at an angle of between 15/sup 0/ and 55/sup 0/; means defining said combustion chamber having means defining a plurality of axial hot gas flow paths from a downstream portion of the combustion chamber to flow hot gases into an upstream portion of the combustion chamber, and means for diverting some of the hot gas flow along paths in a direction circumferentially of the combustion chamber, with the latter paths being immersed in the water flow path thereby to improve heat transfer and terminating in a gas outlet, the combustion chamber comprising at least one modular element, joined axially to the frustro-conical cover and coaxial therewith. The modular element comprises an inner ring and means of defining the circumferential, radial, and spiral flow paths of the hot gases.

Baumgartner, H.; Meier, J.G.

1974-07-03T23:59:59.000Z

346

The morpho-topographic and cartographic analysis of the archaeological site Cornesti "Iarcuri", Timis County, Romania, using computer sciences methods (GIS and Remote Sensing techniques)  

E-Print Network (OSTI)

The archaeological site Cornesti "Iarcuri" is the largest earth fortification in Romania, made out of four concentric compounds, spreading over 1780 hectares. It is known since 1700, but it had only a few small attempts of systematic research, the fortress gained interest only after the publishing of some satellite images by Google Earth. It is located in an area of high fields and it occupies three interfluves and contains two streams. Our paper contains a geomorphologic, topographic and cartographic analysis of the site in order to determine the limits, the structure, the morphology, the construction technique and the functionality of such a fortification.Our research is based on satellite image analysis, on archaeological topography, on soil, climate and vegetation analysis as a way to offer a complex image, through this interdisciplinary study of landscape archaeology. Through our work we try not to date the site as this objective will be achieved only after completing the systematic excavations which sta...

Micle, Dorel; Maruia, Liviu

2009-01-01T23:59:59.000Z

347

Chemical Signatures of and Precursors to Fractures Using Fluid Inclusion Stratigraphy  

Science Conference Proceedings (OSTI)

Enhanced Geothermal Systems (EGS) are designed to recover heat from the subsurface by mechanically creating fractures in subsurface rocks. Open or recently closed fractures would be more susceptible to enhancing the permeability of the system. Identifying dense fracture areas as well as large open fractures from small fracture systems will assist in fracture stimulation site selection. Geothermal systems are constantly generating fractures (Moore, Morrow et al. 1987), and fluids and gases passing through rocks in these systems leave small fluid and gas samples trapped in healed microfractures. These fluid inclusions are faithful records of pore fluid chemistry. Fluid inclusions trapped in minerals as the fractures heal are characteristic of the fluids that formed them, and this signature can be seen in fluid inclusion gas analysis. This report presents the results of the project to determine fracture locations by the chemical signatures from gas analysis of fluid inclusions. With this project we hope to test our assumptions that gas chemistry can distinguish if the fractures are open and bearing production fluids or represent prior active fractures and whether there are chemical signs of open fracture systems in the wall rock above the fracture. Fluid Inclusion Stratigraphy (FIS) is a method developed for the geothermal industry which applies the mass quantification of fluid inclusion gas data from drill cuttings and applying known gas ratios and compositions to determine depth profiles of fluid barriers in a modern geothermal system (Dilley, 2009; Dilley et al., 2005; Norman et al., 2005). Identifying key gas signatures associated with fractures for isolating geothermal fluid production is the latest advancement in the application of FIS to geothermal systems (Dilley and Norman, 2005; Dilley and Norman, 2007). Our hypothesis is that peaks in FIS data are related to location of fractures. Previous work (DOE Grant DE-FG36-06GO16057) has indicated differences in the chemical signature of fluid inclusions between open and closed fractures as well as differences in the chemical signature of open fractures between geothermal systems. Our hypothesis is that open fracture systems can be identified by their FIS chemical signature; that there are differences based on the mineral assemblages and geology of the system; and that there are chemical precursors in the wall rock above open, large fractures. Specific goals for this project are: (1) To build on the preliminary results which indicate that there are differences in the FIS signatures between open and closed fractures by identifying which chemical species indicate open fractures in both active geothermal systems and in hot, dry rock; (2) To evaluate the FIS signatures based on the geology of the fields; (3) To evaluate the FIS signatures based on the mineral assemblages in the fracture; and (4) To determine if there are specific chemical signatures in the wall rock above open, large fractures. This method promises to lower the cost of geothermal energy production in several ways. Knowledge of productive fractures in the boreholes will allow engineers to optimize well production. This information can aid in well testing decisions, well completion strategies, and in resource calculations. It will assist in determining the areas for future fracture enhancement. This will develop into one of the techniques in the 'tool bag' for creating and managing Enhanced Geothermal Systems.

Lorie M. Dilley

2011-03-30T23:59:59.000Z

348

Benchmarking a new closed-form thermal analysis technique against a traditional lumped parameter, finite-difference method  

Science Conference Proceedings (OSTI)

A benchmarking effort was conducted to determine the accuracy of a new analytic generic geology thermal repository model developed at LLNL relative to a more traditional, numerical, lumped parameter technique. The fast-running analytical thermal transport model assumes uniform thermal properties throughout a homogenous storage medium. Arrays of time-dependent heat sources are included geometrically as arrays of line segments and points. The solver uses a source-based linear superposition of closed form analytical functions from each contributing point or line to arrive at an estimate of the thermal evolution of a generic geologic repository. Temperature rise throughout the storage medium is computed as a linear superposition of temperature rises. It is modeled using the MathCAD mathematical engine and is parameterized to allow myriad gridded repository geometries and geologic characteristics [4]. It was anticipated that the accuracy and utility of the temperature field calculated with the LLNL analytical model would provide an accurate 'birds-eye' view in regions that are many tunnel radii away from actual storage units; i.e., at distances where tunnels and individual storage units could realistically be approximated as physical lines or points. However, geometrically explicit storage units, waste packages, tunnel walls and close-in rock are not included in the MathCAD model. The present benchmarking effort therefore focuses on the ability of the analytical model to accurately represent the close-in temperature field. Specifically, close-in temperatures computed with the LLNL MathCAD model were benchmarked against temperatures computed using geometrically-explicit lumped-parameter, repository thermal modeling technique developed over several years at ANL using the SINDAG thermal modeling code [5]. Application of this numerical modeling technique to underground storage of heat generating nuclear waste streams within the proposed YMR Site has been widely reported [6]. New SINDAG thermal models presented here share this same basic modeling approach.

Huff, K. D.; Bauer, T. H. (Nuclear Engineering Division)

2012-08-20T23:59:59.000Z

349

Recurrence Plot and Recurrence Quantification Analysis Techniques for Detecting a Critical Regime. Examples from Financial Market Indices  

E-Print Network (OSTI)

Recurrence Plot (RP) and Recurrence Quantification Analysis (RQA) are signal numerical analysis methodologies able to work with non linear dynamical systems and non stationarity. Moreover they well evidence changes in the states of a dynamical system. We recall their features and give practical recipes. It is shown that RP and RQA detect the critical regime in financial indices (in analogy with phase transition) before a bubble bursts, whence allowing to estimate the bubble initial time. The analysis is made on DAX and NASDAQ daily closing price between Jan. 1998 and Nov. 2003. DAX is studied in order to set-up overall considerations, and as a support for deducing technical rules. The NASDAQ bubble initial time has been estimated to be on Oct. 19, 1999.

A. Fabretti; M. Ausloos

2004-12-31T23:59:59.000Z

350

A finite element analysis technique for predicting as-sprayed residual stresses generated by the plasma spray coating process  

Science Conference Proceedings (OSTI)

It is essential to analyze the residual stresses during the deposition of plasma sprayed coatings since they adversely affect the coatings' performance during their service. In this article, finite element coupled heat transfer and elastic-plastic thermal ... Keywords: Finite element analysis, Heat transfer, Plasma spraying, Residual stresses, Thermal barrier coatings

H. W. Ng; Z. Gan

2005-07-01T23:59:59.000Z

351

RETRAN-3DA Program for Transient Thermal-Hydraulic Analysis of Complex Fluid Flow Systems: Volume 1: Theory and Numerics (Rev ision 3)  

Science Conference Proceedings (OSTI)

RETRAN-02 has proven to be a versatile and reliable computer program for use in best-estimate transient thermal-hydraulic analysis of light water reactor systems. The RETRAN-3D computer program is an extension of the RETRAN-02 program designed to provide analysis capabilities for (1) boiling water reactor (BWR) and pressurized water reactor (PWR) transients, (2) small break loss-of-coolant accidents, (3) anticipated transients without scram, (4) long-term transients, (5) transients with thermodynamic non...

1998-10-14T23:59:59.000Z

352

Computational fluid dynamics applications to improve crop production systems  

Science Conference Proceedings (OSTI)

Computational fluid dynamics (CFD), numerical analysis and simulation tools of fluid flow processes have emerged from the development stage and become nowadays a robust design tool. It is widely used to study various transport phenomena which involve ... Keywords: Decision support tools, Greenhouse, Harvesting machines, Sprayers, Tillage

T. Bartzanas; M. Kacira; H. Zhu; S. Karmakar; E. Tamimi; N. Katsoulas; In Bok Lee; C. Kittas

2013-04-01T23:59:59.000Z

353

Analysis of the Galvanostatic Intermittent Titration Technique (GITT) as applied to a lithium-Ion porous electrode.  

SciTech Connect

Galvanostatic Intermittent Titration Technique (GITT) experiments were conducted to determine the lithium diffusion coefficient of LiNi{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}, used as the active material in a lithium-ion battery porous composite positive electrode. An electrochemical model, based on concentrated solution porous electrode theory, was developed to analyze the GITT experimental results and compare to the original GITT analytical theory. The GITT experimental studies on the oxide active material were conducted between 3.5 and 4.5 V vs. lithium, with the maximum lithium diffusion coefficient value being 10{sup -10} cm{sup 2} s{sup -1} at 3.85 V. The lithium diffusion coefficient values obtained from this study agree favorably with the values obtained from an earlier electrochemical impedance spectroscopy study.

Dees, D. W.; Kawauchi, S.; Abraham, D. P.; Prakash, J.; Chemical Sciences and Engineering Division; Toyota Central R& D Labs Inc.; Illinois Inst. of Tech.

2009-04-01T23:59:59.000Z

354

The Application of Artificial Intelligence Techniques to the Analysis of Waste Assay Data Susan Bridges Julia Hodges Charles Sparrow  

E-Print Network (OSTI)

This report describes an expert system that is being developed to investigate the issues involved in incorporating artificial intelligence techniques into a system that can analyze and characterize containerized radiological waste. The expert system is being developed by scientists at the Mississippi State University Diagnostic and Instrumentation Laboratory in collaboration with scientists at the Idaho National Engineering Laboratory. The goal is to develop an expert system that will be a component of the Waste Assay Measurement Integration System (WAMIS); WAMIS is intended to help the staff at the Stored Waste Examination Pilot Plant (SWEPP) determine proper disposition of the containers. The expert system must combine information from a variety of sources to determine if the waste meets the criteria for shipment that are defined in the quality assurance objectives for the program. An exploratory version of the expert system will be used to evaluate the applicability of different art...

Susan Bridges; Susan Bridges; Julia Hodges; Julia Hodges; Charles Sparrow; Charles Sparrow

1996-01-01T23:59:59.000Z

355

Caltech Faint Galaxy Redshift Survey VII: Data Analysis Techniques and Redshifts in the Field J0053+1234  

E-Print Network (OSTI)

We present the techniques used to determine redshifts and to characterize the spectra of objects in the Caltech Faint Galaxy Redshift Survey in terms of spectral classes and redshift quality classes. These are then applied to spectra from an investigation of a complete sample of objects with $K_s<20$ mag in a 2 by 7.3 arcmin^2 field at J005325+1234. Redshifts were successfully obtained for 163 of the 195 objects in the sample; these redshifts lie in the range [0.173, 1.44] and have a median of 0.58 (excluding 24 Galactic stars). The sample includes two broad lined AGNs and one QSO.

Judith G. Cohen; David W. Hogg; Michael A. Pahre; Roger Blandford; Patrick L. Shopbell; Kevin Richberg

1998-09-05T23:59:59.000Z

356

Permanent prostate brachytherapy: Dosimetric results and analysis of a learning curve with a dynamic dose-feedback technique  

SciTech Connect

Purpose: A permanent prostate brachytherapy (PPB) program utilizing intraoperative inverse-planned dynamic dose-feedback was initiated without prior firsthand experience of alternative techniques. The purpose of this study is to assess the dosimetric learning curve associated with this approach. Methods and Materials: A total of 77 patients underwent PPB implants as monotherapy for localized prostate cancer to a prescription dose of 145 Gy with loose 125I seeds between December 2003 and June 2004. Intraoperative and postoperative dosimetric values, total implanted radioactivity, and operating room (OR) times were compared by sequential case number for all cases. Results: The median intraoperative dosimetric values were: D90 (the minimum dose to 90% of the prostate) = 170 Gy (range, 135-203 Gy), V100 (the volume of the prostate that receives 100% of the prescription dose) = 96% (range, 86-100), V150 = 66% (range, 34-86). Median postoperative dosimetric values were as follows: D90 = 168 Gy (range, 132-197 Gy), V100 = 95% (range, 86-99), V150 = 74% (range, 51-84). Median implanted activity was 0.79 mCi per cubic centimeter of prostate (range, 0.541-1.13). There was no significant correlation by case number on any postoperative dosimetric parameter studied. Door-to-door OR time was reduced from median 138 to 97.5 min per case at the end of the series with a correlation coefficient of -0.76 for the initial 28 cases. Conclusion: Satisfactory dosimetric parameters can be achieved from the outset without a learning curve effect in an appropriately trained environment. The learning curve for dynamic dose-feedback PPB in a clinic naive to other techniques is apparent in terms of OR time.

Acher, Peter [Department of Urology, Guy's and St. Thomas' NHS Foundation Trust, London (United Kingdom)]. E-mail: peter.acher@gstt.nhs.uk; Popert, Rick [Department of Urology, Guy's and St. Thomas' NHS Foundation Trust, London (United Kingdom); Nichol, Janette [Department of Urology, Guy's Hospital, London (United Kingdom); Potters, Louis [New York Prostate Institute, South Nassau Communities Hospital, Oceanside, NY (United States); Morris, Stephen [Department of Clinical Oncology, Guy's and St. Thomas' NHS Foundation Trust, London (United Kingdom); Beaney, Ronald [Department of Clinical Oncology, Guy's and St. Thomas' NHS Foundation Trust, London (United Kingdom)

2006-07-01T23:59:59.000Z

357

Diagnostics Techniques of Power Transformer  

Science Conference Proceedings (OSTI)

This paper provides the information on the diagnostics techniques for condition monitoring of power transformer (PT). This paper deals with the practical importance of the transformer diagnostic in the Electrical Engineering field. A review has been ... Keywords: temperature, condition monitoring, diagnostics methods, paper analysis techniques, oil analysis techniques

Piush Verma; Y. R. Sood; Jashandeep Singh

2009-12-01T23:59:59.000Z

358

Evaluation of the Partial Discharge and Electromagnetic Interference Analysis Techniques for Condition Monitoring of 4160-V Motors  

Science Conference Proceedings (OSTI)

This report provides a brief description of the different activities that occurred during a three-year project encompassing the use of two of the more advanced toolsthe technologies of partial discharge analysis and electromagnetic interference (EMI) analysisfor determining the electrical condition of large electric motors in the utility industry. The project's principal focus was on hardware and determining how to effectively use the technologies in electrical generation facilities. This focus included ...

2008-11-03T23:59:59.000Z

359

Device and technique for in-process sampling and analysis of molten metals and other liquids presenting harsh sampling conditions  

DOE Patents (OSTI)

An apparatus and method for continuously analyzing liquids by creating a supersonic spray which is shaped and sized prior to delivery of the spray to a analysis apparatus. The gas and liquid are mixed in a converging-diverging nozzle where the liquid is sheared into small particles which are of a size and uniformly to form a spray which can be controlled through adjustment of pressures and gas velocity. The spray is shaped by a concentric supplemental flow of gas.

Alvarez, Joseph L. (Idaho Falls, ID); Watson, Lloyd D. (Rigby, ID)

1989-01-01T23:59:59.000Z

360

Device and technique for in-process sampling and analysis of molten metals and other liquids presenting harsh sampling conditions  

DOE Patents (OSTI)

An apparatus and method for continuously analyzing liquids by creating a supersonic spray which is shaped and sized prior to delivery of the spray to a analysis apparatus. The gas and liquid is sheared into small particles which are of a size and uniformity to form a spray which can be controlled through adjustment of pressures and gas velocity. The spray is shaped by a concentric supplemental flow of gas. 5 figs.

Alvarez, J.L.; Watson, L.D.

1988-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Isotopic Analysis At Walker-Lane Transitional Zone Region (Kennedy & Van  

Open Energy Info (EERE)

Kennedy & Van Kennedy & Van Soest, 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Walker-Lane Transitional Zone Region (Kennedy & Van Soest, 2007) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful regional reconnaissance DOE-funding Unknown Notes The correspondence of helium isotope ratios and active transtensional deformation indicates a deformation-enhanced permeability and that mantle fluids can penetrate the ductile lithosphere, even in regions where there is no substantial magmatism. Superimposed on the regional trend are local, high 3He/4He anomalies indicating hidden magmatic activity and/or deep

362

Coal liquefaction process streams characterization and evaluation. Characterization of coal-derived materials by field desorption mass spectrometry, two-dimensional nuclear magnetic resonance, supercritical fluid extraction, and supercritical fluid chromatography/mass spectrometry  

SciTech Connect

Under contract from the DOE , and in association with CONSOL Inc., Battelle, Pacific Northwest Laboratory (PNL) evaluated four principal and several complementary techniques for the analysis of non-distillable direct coal liquefaction materials in support of process development. Field desorption mass spectrometry (FDMS) and nuclear magnetic resonance (NMR) spectroscopic methods were examined for potential usefulness as techniques to elucidate the chemical structure of residual (nondistillable) direct coal liquefaction derived materials. Supercritical fluid extraction (SFE) and supercritical fluid chromatography/mass spectrometry (SFC/MS) were evaluated for effectiveness in compound-class separation and identification of residual materials. Liquid chromatography (including microcolumn) separation techniques, gas chromatography/mass spectrometry (GC/MS), mass spectrometry/mass spectrometry (MS/MS), and GC/Fourier transform infrared (FTIR) spectroscopy methods were applied to supercritical fluid extracts. The full report authored by the PNL researchers is presented here. The following assessment briefly highlights the major findings of the project, and evaluates the potential of the methods for application to coal liquefaction materials. These results will be incorporated by CONSOL into a general overview of the application of novel analytical techniques to coal-derived materials at the conclusion of CONSOL`s contract.

Campbell, J.A.; Linehan, J.C.; Robins, W.H. [Battelle Pacific Northwest Lab., Richland, WA (United States)

1992-07-01T23:59:59.000Z

363

On equivalence of thinning fluids used for hydraulic fracturing  

E-Print Network (OSTI)

The paper aims to answer the question: if and how non-Newtonian fluids may be compared in their mechanical action when used for hydraulic fracturing? By employing the modified formulation of the PKN problem we obtain its simple analytical solutions in the cases of perfectly plastic and Newtonian fluids. Since the results for shear thinning fluids are intermediate between those for these cases, the obtained equation for the fracture length suggests a criterion of the equivalence of various shear thinning fluids for the problem of hydraulic fractures. We assume fluids equivalent in their hydrofracturing action, when at a reference time they produce fractures of the same length. The equation for the fracture length translates the equivalence in terms of the hydraulic fracture length and treatment time into the equivalence in terms of the properties of a fracturing fluid (behavior and consistency indices). Analysis shows that the influence of the consistency and behavior indices on the fracture length, particle v...

Linkov, Alexander

2012-01-01T23:59:59.000Z

364

Isotopic Analysis At Yellowstone Region (Sturchio, Et Al., 1990) | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis At Yellowstone Region (Sturchio, Et Al., 1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Yellowstone Region (Sturchio, Et Al., 1990) Exploration Activity Details Location Yellowstone Caldera Geothermal Region Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes There are two possible explanations for the inferred presence of relatively 18O-enriched thermal water at Yellowstone in the past: (1) meteoric

365

PRECONDITIONING TECHNIQUES IN FLUID DYNAMICS E. Turkel \\Lambda  

E-Print Network (OSTI)

............................................... 5-32 Figure 5-12. COSO Junction Navy II Geothermal Plant

Turkel, Eli

366

Experimental Properties of Fluids Group  

Science Conference Proceedings (OSTI)

The Experimental Properties of Fluids Group, Physical and Chemical Properties Division of the Chemical Science and Technology Laboratory, NIST.

2000-07-24T23:59:59.000Z

367

Supercritical fluid reverse micelle systems  

DOE Patents (OSTI)

of 1 ) United States Patent 5,158,704 Fulton , et al. October 27, 1992 Supercritical fluid reverse micelle systems

Fulton, John L. (Richland, WA); Smith, Richard D. (Richland, WA)

1992-01-01T23:59:59.000Z

368

Production of MHD fluid  

SciTech Connect

A hot gaseous fluid of low ash content, suitable for use in open-cycle MHD (magnetohydrodynamic) power generation, is produced by means of a three-stage process comprising (1) partial combustion of a fossil fuel to produce a hot gaseous product comprising CO.sub.2 CO, and H.sub.2 O, (2) reformation of the gaseous product from stage (1) by means of a fluidized char bed, whereby CO.sub.2 and H.sub.2 O are converted to CO and H.sub.2, and (3) combustion of CO and H.sub.2 from stage (2) to produce a low ash-content fluid (flue gas) comprising CO.sub.2 and H.sub.2 O and having a temperature of about 4000.degree. to 5000.degree.F.

Lacey, James J. (Library, PA); Kurtzrock, Roy C. (Bethel Park, PA); Bienstock, Daniel (Pittsburgh, PA)

1976-08-24T23:59:59.000Z

369

2.25 Advanced Fluid Mechanics, Fall 2002  

E-Print Network (OSTI)

Survey of principal concepts and methods of fluid dynamics. Mass conservation, momentum, and energy equations for continua. Navier-Stokes equation for viscous flows. Similarity and dimensional analysis. Lubrication theory. ...

Sonin, A. A.

370

Applied Science/Techniques  

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

Applied Science/Techniques Applied Science/Techniques Applied Science/Techniques Print The ALS is an excellent incubator of new scientific techniques and instrumentation. Many of the technical advances that make the ALS a world-class soft x-ray facility are developed at the ALS itself. The optical components in use at the ALS-mirrors and lenses optimized for x-ray wavelengths-require incredibly high-precision surfaces and patterns (often formed through extreme ultraviolet lithography at the ALS) and must undergo rigorous calibration and testing provided by beamlines and equipment from the ALS's Optical Metrology Lab and Berkeley Lab's Center for X-Ray Optics. New and/or continuously improved experimental techniques are also a crucial element of a thriving scientific facility. At the ALS, examples of such "technique" highlights include developments in lensless imaging, soft x-ray tomography, high-throughput protein analysis, and high-power coherent terahertz radiation.

371

Use of thermal analysis techniques (TG-DSC) for the characterization of diverse organic municipal waste streams to predict biological stability prior to land application  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer Thermal analysis was used to assess stability and composition of organic matter in three diverse municipal waste streams. Black-Right-Pointing-Pointer Results were compared with C mineralization during 90-day incubation, FTIR and {sup 13}C NMR. Black-Right-Pointing-Pointer Thermal analysis reflected the differences between the organic wastes before and after the incubation. Black-Right-Pointing-Pointer The calculated energy density showed a strong correlation with cumulative respiration. Black-Right-Pointing-Pointer Conventional and thermal methods provide complimentary means of characterizing organic wastes. - Abstract: The use of organic municipal wastes as soil amendments is an increasing practice that can divert significant amounts of waste from landfill, and provides a potential source of nutrients and organic matter to ameliorate degraded soils. Due to the high heterogeneity of organic municipal waste streams, it is difficult to rapidly and cost-effectively establish their suitability as soil amendments using a single method. Thermal analysis has been proposed as an evolving technique to assess the stability and composition of the organic matter present in these wastes. In this study, three different organic municipal waste streams (i.e., a municipal waste compost (MC), a composted sewage sludge (CS) and a thermally dried sewage sludge (TS)) were characterized using conventional and thermal methods. The conventional methods used to test organic matter stability included laboratory incubation with measurement of respired C, and spectroscopic methods to characterize chemical composition. Carbon mineralization was measured during a 90-day incubation, and samples before and after incubation were analyzed by chemical (elemental analysis) and spectroscopic (infrared and nuclear magnetic resonance) methods. Results were compared with those obtained by thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques. Total amounts of CO{sub 2} respired indicated that the organic matter in the TS was the least stable, while that in the CS was the most stable. This was confirmed by changes detected with the spectroscopic methods in the composition of the organic wastes due to C mineralization. Differences were especially pronounced for TS, which showed a remarkable loss of aliphatic and proteinaceous compounds during the incubation process. TG, and especially DSC analysis, clearly reflected these differences between the three organic wastes before and after the incubation. Furthermore, the calculated energy density, which represents the energy available per unit of organic matter, showed a strong correlation with cumulative respiration. Results obtained support the hypothesis of a potential link between the thermal and biological stability of the studied organic materials, and consequently the ability of thermal analysis to characterize the maturity of municipal organic wastes and composts.

Fernandez, Jose M., E-mail: joseman@sas.upenn.edu [Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA 19104-6316 (United States); Plaza, Cesar; Polo, Alfredo [Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Cientificas, Serrano 115 dpdo., 28006 Madrid (Spain); Plante, Alain F. [Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA 19104-6316 (United States)

2012-01-15T23:59:59.000Z

372

Isotopic Analysis At Lassen Volcanic National Park Area (Janik & Mclaren,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown Notes Both fluid and gas isotopic analysis. References Cathy J. Janik, Marcia K. McLaren (2010) Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two

373

Isotopic Analysis At Dixie Valley Geothermal Field Area (Kennedy & Van  

Open Energy Info (EERE)

Isotopic Analysis At Dixie Valley Geothermal Field Area (Kennedy & Van Isotopic Analysis At Dixie Valley Geothermal Field Area (Kennedy & Van Soest, 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Dixie Valley Geothermal Field Area (Kennedy & Van Soest, 2006) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown Notes Fluids from springs, fumaroles, and wells throughout Dixie Valley, NV were analyzed for noble gas abundances and isotopic compositions. The helium isotopic compositions of fluids produced from the Dixie Valley geothermal field range from 0.70 to 0.76 Ra, are among the highest values in the valley, and indicate that _7.5% of the total helium is derived from the

374

Local entropy generation analysis  

SciTech Connect

Second law analysis techniques have been widely used to evaluate the sources of irreversibility in components and systems of components but the evaluation of local sources of irreversibility in thermal processes has received little attention. While analytical procedures for evaluating local entropy generation have been developed, applications have been limited to fluid flows with analytical solutions for the velocity and temperature fields. The analysis of local entropy generation can be used to evaluate more complicated flows by including entropy generation calculations in a computational fluid dynamics (CFD) code. The research documented in this report consists of incorporating local entropy generation calculations in an existing CFD code and then using the code to evaluate the distribution of thermodynamic losses in two applications: an impinging jet and a magnetic heat pump. 22 refs., 13 figs., 9 tabs.

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

1991-02-01T23:59:59.000Z

375

Supercritical fluid reverse micelle separation  

DOE Patents (OSTI)

A method of separating solute material from a polar fluid in a first polar fluid phase is provided. The method comprises combining a polar fluid, a second fluid that is a gas at standard temperature and pressure and has a critical density, and a surfactant. The solute material is dissolved in the polar fluid to define the first polar fluid phase. The combined polar and second fluids, surfactant, and solute material dissolved in the polar fluid is maintained under near critical or supercritical temperature and pressure conditions such that the density of the second fluid exceeds the critical density thereof. In this way, a reverse micelle system defining a reverse micelle solvent is formed which comprises a continuous phase in the second fluid and a plurality of reverse micelles dispersed in the continuous phase. The solute material is dissolved in the polar fluid and is in chemical equilibrium with the reverse micelles. The first polar fluid phase and the continuous phase are immiscible. The reverse micelles each comprise a dynamic aggregate of surfactant molecules surrounding a core of the polar fluid. The reverse micelle solvent has a polar fluid-to-surfactant molar ratio W, which can vary over a range having a maximum ratio W[sub o] that determines the maximum size of the reverse micelles. The maximum ratio W[sub o] of the reverse micelle solvent is then varied, and the solute material from the first polar fluid phase is transported into the reverse micelles in the continuous phase at an extraction efficiency determined by the critical or supercritical conditions. 27 figures.

Fulton, J.L.; Smith, R.D.

1993-11-30T23:59:59.000Z

376

Supercritical fluid reverse micelle separation  

DOE Patents (OSTI)

A method of separating solute material from a polar fluid in a first polar fluid phase is provided. The method comprises combining a polar fluid, a second fluid that is a gas at standard temperature and pressure and has a critical density, and a surfactant. The solute material is dissolved in the polar fluid to define the first polar fluid phase. The combined polar and second fluids, surfactant, and solute material dissolved in the polar fluid is maintained under near critical or supercritical temperature and pressure conditions such that the density of the second fluid exceeds the critical density thereof. In this way, a reverse micelle system defining a reverse micelle solvent is formed which comprises a continuous phase in the second fluid and a plurality of reverse micelles dispersed in the continuous phase. The solute material is dissolved in the polar fluid and is in chemical equilibrium with the reverse micelles. The first polar fluid phase and the continuous phase are immiscible. The reverse micelles each comprise a dynamic aggregate of surfactant molecules surrounding a core of the polar fluid. The reverse micelle solvent has a polar fluid-to-surfactant molar ratio W, which can vary over a range having a maximum ratio W.sub.o that determines the maximum size of the reverse micelles. The maximum ratio W.sub.o of the reverse micelle solvent is then varied, and the solute material from the first polar fluid phase is transported into the reverse micelles in the continuous phase at an extraction efficiency determined by the critical or supercritical conditions.

Fulton, John L. (Richland, WA); Smith, Richard D. (Richland, WA)

1993-01-01T23:59:59.000Z

377

Fluid bed material transfer method  

DOE Patents (OSTI)

A fluidized bed apparatus comprising a pair of separated fluid bed enclosures, each enclosing a fluid bed carried on an air distributor plate supplied with fluidizing air from below the plate. At least one equalizing duct extending through sidewalls of both fluid bed enclosures and flexibly engaged therewith to communicate the fluid beds with each other. The equalizing duct being surrounded by insulation which is in turn encased by an outer duct having expansion means and being fixed between the sidewalls of the fluid bed enclosures.

Pinske, Jr., Edward E. (Akron, OH)

1994-01-01T23:59:59.000Z

378

Development of New Biphasic Metal Organic Working Fluids for Subcritical  

Open Energy Info (EERE)

Biphasic Metal Organic Working Fluids for Subcritical Biphasic Metal Organic Working Fluids for Subcritical Geothermal Systems Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Development of New Biphasic Metal Organic Working Fluids for Subcritical Geothermal Systems Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Working Fluids for Binary Power Plants Project Description In binary-cycle plants the cycle efficiency improves as pumping energy is reduced and from maximizing the enthalpy gain of the working fluid for a given amount of heat extracted from the geothermal source brine. Enthalpy gain of the working fluid in the heat exchanger occurs principally from sensible heat gained while passing through the heat exchanger in the liquid state and from vaporization of the organic working fluid near the exit of the heat exchanger. Additional heat transfer is limited after the vapor phase transition due the low thermal conductivity and heat capacity of the vapor. Also, operating pressures and temperatures are constrained by the bulk phase behavior and thermodynamic properties of the working fluid (boiling point, latent heat of vaporization, density, heat capacity, etc.). The fundamental underlying goal of this project is to overcome the cycle efficiency limitations imposed by the bulk thermodynamic proper-ties of the working fluid by introducing a metal-organic heat carrier (MOHC) into the system.

379

2D simulation of fluid-structure interaction using finite element method  

Science Conference Proceedings (OSTI)

This paper deals with pressure-based finite element analysis of fluid-structure systems considering the coupled fluid and structural dynamics. The present method uses two-dimensional fluid elements and structural line elements for the numerical simulation ... Keywords: Finite element, Galerkin weighted residual method, Newmark's predictor-corrector method, Pressure formulation, Sloshing

S. Mitra; K. P. Sinhamahapatra

2008-12-01T23:59:59.000Z

380

Full Life Wind Turbine Gearbox Lubricating Fluids  

DOE Green Energy (OSTI)

Industrial gear box lubricants typically are hydrocarbon based mineral oils with considerable amounts of additives to overcome the lack of base fluid properties like wear protection, oxidation stability, load carrying capacity, low temperature solidification and drop of viscosity at higher temperatures. For today's wind turbine gearboxes, the requirements are more severe and synthetic hydrocarbon oils are used to improve on this, but all such hydrocarbon based lubricants require significant amounts of Extreme Pressure (EP) additives to meet performance requirements. Perfluoropolyether (PFPE) fluids provide load carrying capacity as an inherent property. During the course of the project with the main tasks of 'Establish a Benchmark', 'Lubricant Evaluation', 'Full Scale Gearbox Trial' and 'Economic Evaluation', the PAO Reference oil exhibited significant changes after laboratory gear testing, in service operation in the field and full scale gearbox trial. Four hydrocarbon base oils were selected for comparison in the benchmarking exercise and showed variation with respect to meeting the requirements for the laboratory micro-pitting tests, while the PFPE fluid exceeded the requirements even with the material taken after the full scale gear box trial. This is remarkable for a lubricant without EP additives. Laboratory bearing tests performed on the PFPE fluids before and after the full scale gear box trial showed the results met requirements for the industry standard. The PFPE fluid successfully completed the full scale gear box test program which included baseline and progressive staged load testing. The evaluation of gears showed no micro-pitting or objectionable wear. By the final stage, lubricant film thickness had been reduced to just 21% of its original value, this was by design and resulted in a lambda ratio of well below 1. This test design scenario of a low lambda ratio is a very undesirable lubrication condition for real world but creates the ability to test the lubricating fluids performance under the most extreme conditions. The PAO Reference oil also passed its testing without any noticeable deterioration of the gear surface. However the PAO Reference oil was replaced midway through the progressive loading, as the lubricant was burned in an attempt to raise the sump temperature to the same levels as for the PFPE. Both materials experienced a decrease of viscosity during their respective run times. The viscosity index decreased for the PAO there while there was a slight increase for the PFPE. FZG laboratory gear tests and measurements of the drive motor's current during the full scale gear box trial were made to characterize the relative efficiency between the PFPE fluid and the PAO Reference oil. In the FZG laboratory efficiency test, the PFPE fluids show much higher churning losses due to their higher viscosity and density. The analysis seems to show that the efficiency correlates better to dynamic viscosity than any other of the measured metrics such as film thickness. In load stages where the load, speed and temperature are similar, the PFPE fluid has a greater film thickness and theoretical gear protection, but requires a larger current for the drive motor than the PAO. However in load stages where the film thickness is the same, the PFPE fluid's reduced dynamic viscosity gives it a slight efficiency advantage relative to the PAO reference oil. Ultimately, many factors such as temperature, rotational speed, and fluid viscosity combine in a complex fashion to influence the results. However, the PFPE's much lower change of viscosity with respect to temperature, allows variations in designing an optimum viscosity to balance efficiency versus gear protection. Economic analysis was done using Cost of Energy calculations. The results vary from 5.3% for a 'Likely Case' to 16.8% for a 'Best Case' scenario as potential cost improvement by using PFPE as the gearbox lubricating fluid. It is important to note the largest portion of savings comes in Levelized Replacement Cost, which is dictated by the assumption on gearb

Lutz, Glenn A.; Jungk, Manfred; Bryant, Jonathan J.; Lauer, Rebecca S.; Chobot, Anthony; Mayer, Tyler; Palmer, Shane; Kauffman, Robert E.

2012-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

New Developments in LC-MS and Other Hyphenated Techniques  

SciTech Connect

Extensive challenges faced by analytical chemists in studying real world complex samples such as biological body fluids, tissue samples, environmental and geological samples have lead to the development of advanced analytical approaches. The vast array of contemporary technologies can be categorized into two major areas: sample separation and mass spectrometry analysis. Current state-of-the-art sample separation methods include gas chromatography, high performance liquid chromatography, ultra high pressure liquid chromatography, solid phase extraction, capillary electrophoresis, and gas phase separation techniques such as ion mobility spectrometry. The recent trend in sample separation is to combine (or hyphenate) multiple techniques that employ different separation mechanisms to maximize separation efficiency. The most widely used combinations include two-dimensional gas chromatography, strong cation exchange or weak cation exchange chromatography followed by reversed-phase liquid chromatography, two-dimensional reversed-phase liquid chromatography, liquid chromatography followed by ion mobility spectrometry and two-dimensional electrophoresis techniques. The introduction of atmospheric pressure ionization techniques such as electrospray ionization and matrix assisted laser desorption ionization and variations of the two have drastically increased the impact of mass spectrometry on bioanalytical applications. Mass spectrometry itself has tremendously improved over the years in terms of sensitivity, detection limits, dynamic range and sequencing capabilities. Currently, mass spectrometers can attain zeptomolole detection limits with five orders of magnitude dynamic range. In this chapter, we summarize recent developments in hyphenated techniques and their applications to complex sample analysis.

Belov, Mikhail E.; Kurulugama, Ruwan T.; Lopez-Ferrer, Daniel; Ibrahim, Yehia M.; Baker, Erin Shammel

2011-06-21T23:59:59.000Z

382

Acoustic concentration of particles in fluid flow  

DOE Patents (OSTI)

An apparatus for acoustic concentration of particles in a fluid flow includes a substantially acoustically transparent membrane and a vibration generator that define a fluid flow path therebetween. The fluid flow path is in fluid communication with a fluid source and a fluid outlet and the vibration generator is disposed adjacent the fluid flow path and is capable of producing an acoustic field in the fluid flow path. The acoustic field produces at least one pressure minima in the fluid flow path at a predetermined location within the fluid flow path and forces predetermined particles in the fluid flow path to the at least one pressure minima.

Ward, Michael D. (Los Alamos, NM); Kaduchak, Gregory (Los Alamos, NM)

2010-11-23T23:59:59.000Z

383

It's The Fluids SEG Honorary Lecture  

E-Print Network (OSTI)

T.P. Water Butane CO2 #12;Fluid ­ Density 800 1000 1200FluidDensity[kg/m3] Brine CO2 0 2 4 6 8 10 0 200 400 600 Fluid Pressure [MPa] FluidDensity[kg/m Butane CO2 #12;Fluid ­ Modulus 2000 2500 3000 FluidModulus[MPa] Brine 0 2 4 6 8 10 0 500 1000 1500 Fluid Pressure [MPa] FluidModulus[MPa] Butane CO2 #12;GENERAL PHASE

384

HANFORD DOUBLE SHELL TANK (DST) THERMAL & SEISMIC PROJECT DYTRAN BENCHMARK ANALYSIS OF SEISMICALLY INDUCED FLUID STRUCTURE INTERACTION IN FLAT TOP TANKS  

SciTech Connect

The work reported in this document was performed in support of a project entitled ''Double-Shell Tank (DST) Integrity Project - DST Thermal and Seismic Analyses''. The overall scope of the project is to complete an up-to-date comprehensive analysis of record of the DST System at Hanford. The work described herein was performed in support of the seismic analysis of the DSTs. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). The work herein was motivated by review comments from a Project Review Meeting held on March 20-21, 2006. One of the recommendations from that meeting was that the effects of the interaction between the tank liquid and the roof be further studied (Rinker, Deibler, Johnson, Karri, Pilli, Abatt, Carpenter, and Hendrix - Appendix E of RPP-RPT-28968, Rev. 1). The reviewers recommended that solutions be obtained for seismic excitation of flat roof tanks containing liquid with varying headspace between the top of the liquid and the tank roof. It was recommended that the solutions be compared with simple, approximate procedures described in BNL (1995) and Malhotra (2005). This report documents the results of the requested studies and compares the predictions of Dytran simulations to the approximate procedures in BNL (1995) and Malhotra (2005) for flat roof tanks. The four cases analyzed all employed a rigid circular cylindrical flat top tank with a radius of 450 in. and a height of 500 in. The initial liquid levels in the tank were 460,480,490, and 500 in. For the given tank geometry and the selected seismic input, the maximum unconstrained slosh height of the liquid is slightly greater than 25 in. Thus, the initial liquid level of 460 in. represents an effectively roofless tank, the two intermediate liquid levels lead to intermittent interaction between the liquid and tank roof, and the 500 in. liquid level represents a completely full tank with no sloshing. Although this work was performed in support of the seismic analysis of the Hanford DSTs, the tank models in this study are for an idealized flat top configuration. Moreover, the liquid levels used in the present models are for study purposes only and are independent of the actual operating levels of the DSTs. The response parameters that are evaluated in this study are the total hydrodynamic reaction forces, the peak convective hydrodynamic forces, the fundamental convective frequencies, the liquid pressures, and peak slosh heights. The results show that the Dytran solutions agree well with the known solutions for the roofless tank and completely full tank. At the two intermediate liquid levels, there are some significant differences between the Dytran results and the approximate estimates. The results show that the estimates of peak hydrodynamic reaction forces appearing in BNL (1995) and Malhotra (2005) are reasonable and generally conservative relative to the Dytran solutions. At the 460 and 480 in. liquid levels, Dytran underestimates the convective component of the reaction force compared to the estimated in BNL (1995) and Malhotra (2005), but the convective component of the reaction force is small relative to the total reaction force. At the 490 in. liquid levels, the peak convective reaction force is more than twice as large as predicted by the approximate methods in BNL (1995) and Malhotra (2005). All three methods give similar answers for the fundamental convective frequency at the 460 and 480 in. liquid levels, but the Dytran solution indicates a significant increase in the apparent convective frequency at the 490 in. liquid level that is caused by the interaction with the roof. The peak wall pressures in the tank at the two intermediate liquid levels are essentially the same as for a roofless tank in the lower two-thirds of the tank wall, but diverge from that solution in the upper third of the tank wall. The estimates of peak wall pressures appearing in BNL (1995) are quite conservative lower in the tank, but may underestimate the peak wall pressures closer to the tank roof. Finally, the peak roof pre

MACKEY, T.C.

2007-02-16T23:59:59.000Z

385

Applied Science/Techniques  

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

Applied Science/Techniques Print Applied Science/Techniques Print The ALS is an excellent incubator of new scientific techniques and instrumentation. Many of the technical advances that make the ALS a world-class soft x-ray facility are developed at the ALS itself. The optical components in use at the ALS-mirrors and lenses optimized for x-ray wavelengths-require incredibly high-precision surfaces and patterns (often formed through extreme ultraviolet lithography at the ALS) and must undergo rigorous calibration and testing provided by beamlines and equipment from the ALS's Optical Metrology Lab and Berkeley Lab's Center for X-Ray Optics. New and/or continuously improved experimental techniques are also a crucial element of a thriving scientific facility. At the ALS, examples of such "technique" highlights include developments in lensless imaging, soft x-ray tomography, high-throughput protein analysis, and high-power coherent terahertz radiation.

386

Microsoft PowerPoint - Development of a Two-Fluid_Gokaltun  

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

M., Particle-Fluid Two-Phase Flow: the Energy-Minimization Multi-Scale Method; Metallurgy. Beijing: Industry Press, 1994. (2) Benyahia, S., Analysis of Model Parameters...

387

Effects of Port Geometries on Fluid Flow Patterns in Slab Moulds  

Science Conference Proceedings (OSTI)

Analysis of Residence Time Distribution (RTD) of Fluid Flows in a Four Strand Delta-shaped Tundish Operating Under Isothermal and Non-isothermal...

388

Study on Fluid Flow in a Twelve-strand Tundish under the Operation ...  

Science Conference Proceedings (OSTI)

Analysis of Residence Time Distribution (RTD) of Fluid Flows in a Four Strand Delta-shaped Tundish Operating Under Isothermal and Non-isothermal...

389

Ultrasonic fluid quality sensor system  

SciTech Connect

A system for determining the composition of a multiple-component fluid and for determining linear flow comprising at least one sing-around circuit that determines the velocity of a signal in the multiple-component fluid and that is correlatable to a database for the multiple-component fluid. A system for determining flow uses two of the inventive circuits, one of which is set at an angle that is not perpendicular to the direction of flow.

Gomm, Tyler J. (Meridian, ID); Kraft, Nancy C. (Idaho Falls, ID); Phelps, Larry D. (Pocatello, ID); Taylor, Steven C. (Idaho Falls, ID)

2002-10-08T23:59:59.000Z

390

Ultrasonic Fluid Quality Sensor System  

DOE Patents (OSTI)

A system for determining the composition of a multiple-component fluid and for determining linear flow comprising at least one sing-around circuit that determines the velocity of a signal in the multiple-component fluid and that is correlatable to a database for the multiple-component fluid. A system for determining flow uses two of the inventive circuits, one of which is set at an angle that is not perpendicular to the direction of flow.

Gomm, Tyler J. (Meridian, ID); Kraft, Nancy C. (Idaho Falls, ID); Phelps, Larry D. (Pocatello, ID); Taylor, Steven C. (Idaho Falls, ID)

2003-10-21T23:59:59.000Z

391

MOLTEN SALT HEAT TRANSFER FLUID  

thermal energy storage tanks Sandia has developed a heat transfer fluid (HTF) for use at elevated temperatures that has a lower freezing point

392

Fracturing Fluid Characterization Facility  

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

Documentation Page Documentation Page 1. Report No. DE - FC 21 - 92MC29077 2. 3. Recipient's Accession No. 5. Report Date August 31, 2000 4. Title and Subtitle Fracturing Fluid Characterization Facility 6. 7. Author(s) The University of Oklahoma 8. Performing Organization Rept. No. 10. Project/Task/Work Unit No. 9. Performing Organization Name and Address The University of Oklahoma Sarkeys Energy Center T301 100 E Boyd St Norman, OK 73019 11. Contract (C) or Grant (G) No. DOE:DE FC21 92 MC29077 13. Type of Report & Period Covered Final Report 09 30 92 - 03 31 00 12. Sponsoring Organization Name and Address US Dept of Energy - FETL 3610 Collins Ferry Road Morgantown, WV 26505 14. 15. Supplementary Notes Several technical papers were prepared and presented at various Society of Petroleum Engineers Conferences and US

393

Fluid loss to formation stopped prior to gravel packing  

Science Conference Proceedings (OSTI)

Union Texas Petroleum has combined special techniques in offshore Louisiana gravel-packing operations to combat severe fluid loss that had jeopardized previous gravel-packed completions. By using an annulus pressure-controlled circulation valve and a crosslinked polymer gelled block, Union Texas was able to totally halt loss of fluid to a formation that had an 1,835-psi overbalanced (the hydrostatic pressure of well fluid in the treating string-to-casing annulus exceeded formation pressure by 1,835 psi). The pressure-controlled valve permitted process control without pipe movement, and the gelled block prevented fluid loss to the formation while the gravel pack was being installed. The well was perforated underbalanced, using tubing-conveyed guns, for perforation cleanup.

Quarnstrom, T.F. (Union Texas Petroleum, Houston, TX (US)); Cavender, T.W.; Shelton, G. (Vann Systems Houston, TX (US))

1989-09-25T23:59:59.000Z

394

Completion fluids: a generic overview. Part 2  

SciTech Connect

This work defines how clean completion fluids should be obtained onsite by implementing cleaner operational practices and using progressive solids removal steps, so that final fine filtration can be effective. Several current final filtration techniques are discussed and evaluated. Due to the variability in solids loading during completion operations, a number of solids removal steps are recommended to enhance the filtration process toward a solids-free system. In order of descending particle size removal, the equipment needed includes a shale shaker, settling tank, desilter, centrifugal separator, and final polishing filters. 25 references.

Ammerer, N.H.; Hashemi, R.; Jewell, J.E.

1983-06-01T23:59:59.000Z

395

Classical analogous of quantum cosmological perfect fluid models  

E-Print Network (OSTI)

Quantization in the mini-superspace of a gravity system coupled to a perfect fluid, leads to a solvable model which implies singularity free solutions through the construction of a superposition of the wavefunctions. We show that such models are equivalent to a classical system where, besides the perfect fluid, a repulsive fluid with an equation of state $p_Q = \\rho_Q$ is present. This leads to speculate on the true nature of this quantization procedure. A perturbative analysis of the classical system reveals the condition for the stability of the classical system in terms of the existence of an anti-gravity phase.

A. B. Batista; J. C. Fabris; S. V. B. Goncalves; J. Tossa

2000-11-28T23:59:59.000Z

396

State-of-the-art in coalbed methane drilling fluids  

SciTech Connect

The production of methane from wet coalbeds is often associated with the production of significant amounts of water. While producing water is necessary to desorb the methane from the coal, the damage from the drilling fluids used is difficult to assess, because the gas production follows weeks to months after the well is drilled. Commonly asked questions include the following: What are the important parameters for drilling an organic reservoir rock that is both the source and the trap for the methane? Has the drilling fluid affected the gas production? Are the cleats plugged? Does the 'filtercake' have an impact on the flow of water and gas? Are stimulation techniques compatible with the drilling fluids used? This paper describes the development of a unique drilling fluid to drill coalbed methane wells with a special emphasis on horizontal applications. The fluid design incorporates products to match the delicate surface chemistry on the coal, a matting system to provide both borehole stability and minimize fluid losses to the cleats, and a breaker method of removing the matting system once drilling is completed. This paper also discusses how coal geology impacts drilling planning, drilling practices, the choice of drilling fluid, and completion/stimulation techniques for Upper Cretaceous Mannville-type coals drilled within the Western Canadian Sedimentary Basin. A focus on horizontal coalbed methane (CBM) wells is presented. Field results from three horizontal wells are discussed, two of which were drilled with the new drilling fluid system. The wells demonstrated exceptional stability in coal for lengths to 1000 m, controlled drilling rates and ease of running slotted liners. Methods for, and results of, placing the breaker in the horizontal wells are covered in depth.

Baltoiu, L.V.; Warren, B.K.; Natras, T.A.

2008-09-15T23:59:59.000Z

397

Method to study fracture fluid polymer degradation using size exclusion chromatography. [Size exclusion chromatography  

SciTech Connect

A Size Exclusion Chromatography system is described which can be used to study conditions affecting the degradation of fracturing fluid polymers. In general, the effects of breaker type and concentration, temperature, and other additives to the fracturing fluid system can be monitored using this technique. Identification of effective conditions for polymer degradation may result in better design of fracturing fluids in order to minimize fracture and formation damage. 18 references, 20 figures, 6 tables.

Gall, B.L.; Raible, C.J.

1984-02-01T23:59:59.000Z

398

Field Techniques | Open Energy Information  

Open Energy Info (EERE)

Field Techniques Field Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Map surface geology and hydrothermal alteration. Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Bulk and trace element analysis of rocks, minerals, and sediments. Identify and document surface geology and mineralogy. Rapid and unambiguous identification of unknown minerals.[1] Stratigraphic/Structural: Locates active faults in the area of interest. Map fault and fracture patterns, kinematic information. Can reveal relatively high permeability zones. Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting.

399

Transdisciplinary Fluid Integration Research Center  

E-Print Network (OSTI)

Environment Reality-Coupled Computation Energy Dynamics Integrated Visual Informatics Super-Real-Time Medical of Fluid Science, Tohoku University, in April 2003. The next generation transdisciplinary research Research focus is to advance utilization of Computer Fluid Dynamics (CFD) for solving engineering problems

Obayashi, Shigeru

400

Mesoscale Structures at Complex Fluid-Fluid Interfaces: a Novel Lattice Boltzmann / Molecular Dynamics Coupling  

E-Print Network (OSTI)

Complex fluid-fluid interfaces featuring mesoscale structures with adsorbed particles are key components of newly designed materials which are continuously enriching the field of soft matter. Simulation tools which are able to cope with the different scales characterizing these systems are a fundamental requirement for efficient theoretical investigations. In this paper we present a novel simulation method, based on the approach of Ahlrichs and D\\"unweg [Ahlrichs and D\\"unweg, Int. J. Mod. Phys. C, 1998, 9, 1429], that couples the "Shan-Chen" multicomponent Lattice Boltzmann technique to off-lattice molecular dynamics. We demonstrate how this approach can be used to solve a wide class of challenging problems. Several examples are given, with an accent on bicontinuous phases formation in polyelectrolyte solutions and ferrofluid emulsions. We show also that the introduction of solvation free energies in the particle-fluid interaction unveils the hidden, multiscale nature of the particle-fluid coupling, allowing to treat symmetrically (and interchangeably) the on-lattice and off-lattice components of the system.

Marcello Sega; Mauro Sbragaglia; Sofia Sergeevna Kantorovich; Alexey Olegovich Ivanov

2013-06-04T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Fracturing fluids -- then and now  

Science Conference Proceedings (OSTI)

Fracturing fluid provides the means by which the hydraulic fracturing process can take place. All applications of well stimulation by fracturing must include selection of fracturing fluid in the initial phases of fracture design and treatment planning. Fracturing fluid has two important purposes: (1) to provide sufficient viscosity to suspend and transport proppant deep into the created fracture system and (2) to decompose, or break, chemically to a low viscosity to allow flowback of a major part of the fluid to the surface for fracture cleanup after the treatment is completed. Because of the importance of its rheological properties and behavior in the fracture under reservoir conditions during (and immediately after) the treatment, service company research laboratories have spent millions of dollars on R and D of fracturing fluids.

Jennings, A.R. Jr. [Enhanced Well Stimulation Inc., Plano, TX (United States)

1996-07-01T23:59:59.000Z

402

Fluid-structure interaction for a pressure driven flow  

Science Conference Proceedings (OSTI)

In this article we discuss the application of a Lagrange multiplier based fictitious domain method for the simulation of the motion of two rigid flaps in an unsteady flow generated by pressure gradients. The distributed Lagrange multiplier technique ... Keywords: Distributed Lagrange multiplier method, Fluid-structure interaction, Marchuk-Yanenko splitting scheme, Pulse pressure

Arati Nanda Pati

2008-01-01T23:59:59.000Z

403

Evaluation of lineament analysis as an exploration technique for geothermal energy, western and central Nevada. Final report, June 1976--October 1978  

DOE Green Energy (OSTI)

Lineament analysis as an exploration technique for geothermal energy using multi-scale, multi-format imagery and geophysical data is investigated and evaluated. Two areas in Nevada, each having distinct differences in structural style were studied. One area, which encompasses a portion of the Battle Mountain Heat Flow High, was studied to determine the relationship between regional and local structural controls and geothermal activity. Four geothermal sites within this area (Winnemucca AMS) were selected and studied in detail. These sites include: 1) Leach Hot Springs, 2) Kyle Hot Springs, 3) Beowawe geothermal area and Buffalo Valley Hot Springs. A second area encompassed by the Reno AMS Sheet was selected for further study in a region dominated by three diverse tectonic styles; these are: 1) the Sierra Nevada Front, 2) the Walker Lane, and 3) basin-and-range structures. Geothermal sites analyzed at site specific scales within the Reno AMS Sheet included Steamboat Hot Springs in the Sierra Nevada Front subprovince, Dixie Valley Hot Springs located in typical basin-and-range terrain and the Brady's-Desert Peak area which is marginal to the Walker Lane. Data products employed included LANDSAT imagery, SKYLAB photography, gravity, and aeromagnetic maps. Results of this investigation indicate that in north-central Nevada the major sites of geothermal activity are associated with northeast trending structures related to the Midas Trench lineament and that the most viable geothermal area (Beowawe is located at the intersection of the northeast trend of the Oregon-Nevada Lineament.

Trexler, D.T.; Bell, E.J.; Roquemore, G.R.

1978-10-01T23:59:59.000Z

404

Fluid flow monitoring device  

DOE Patents (OSTI)

This invention consists of a flow meter and temperature measuring device comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips.

McKay, M.D.; Sweeney, C.E.

1991-03-05T23:59:59.000Z

405

Fluid sampling system  

DOE Patents (OSTI)

An fluid sampling system allows sampling of radioactive liquid without spillage. A feed tank is connected to a liquid transfer jet powered by a pumping chamber pressurized by compressed air. The liquid is pumped upwardly into a sampling jet of a venturi design having a lumen with an inlet, an outlet, a constricted middle portion, and a port located above the constricted middle portion. The liquid is passed under pressure through the constricted portion causing its velocity to increase and its pressure to decreased, thereby preventing liquid from escaping. A septum sealing the port can be pierced by a two pointed hollow needle leading into a sample bottle also sealed by a pierceable septum affixed to one end. The bottle is evacuated by flow through the sample jet, cyclic variation in the sampler jet pressure periodically leaves the evacuated bottle with lower pressure than that of the port, thus causing solution to pass into the bottle. The remaining solution in the system is returned to the feed tank via a holding tank.

Houck, Edward D. (Idaho Falls, ID)

1994-01-01T23:59:59.000Z

406

Fluid sampling system  

DOE Patents (OSTI)

This invention comprises a fluid sampling system which allows sampling of radioactive liquid without spillage. A feed tank is connected to a liquid transfer jet powered by a pumping chamber pressurized by compressed air. The liquid is pumped up into a sampling jet of venturi design having a lumen with an inlet, an outlet, a constricted middle portion, and a port located above the constricted middle portion. The liquid is passed under pressure through the constricted portion causing its velocity to increase and its pressure to decrease, thereby preventing liquid from escaping. A septum sealing the port can be pierced by a two pointed hollow needle leading into a sample bottle also sealed by a pierceable septum affixed to one end. The bottle is evacuated by flow through the sample jet, cyclic variation in the sampler jet pressure periodicially leaves the evacuated bottle with lower pressure than that of the port, thus causing solution to pass into the bottle. The remaining solution in the system is returned to the feed tank via a holding tank.

Houck, E.D.

1993-12-31T23:59:59.000Z

407

Fluid sampling system  

DOE Patents (OSTI)

An fluid sampling system allows sampling of radioactive liquid without spillage. A feed tank is connected to a liquid transfer jet powered by a pumping chamber pressurized by compressed air. The liquid is pumped upwardly into a sampling jet of a venturi design having a lumen with an inlet, an outlet, a constricted middle portion, and a port located above the constricted middle portion. The liquid is passed under pressure through the constricted portion causing its velocity to increase and its pressure to be decreased, thereby preventing liquid from escaping. A septum sealing the port can be pierced by a two pointed hollow needle leading into a sample bottle also sealed by a pierceable septum affixed to one end. The bottle is evacuated by flow through the sample jet, cyclic variation in the sampler jet pressure periodically leaves the evacuated bottle with lower pressure than that of the port, thus causing solution to pass into the bottle. The remaining solution in the system is returned to the feed tank via a holding tank. 4 figs.

Houck, E.D.

1994-10-11T23:59:59.000Z

408

Tracing Geothermal Fluids  

DOE Green Energy (OSTI)

Geothermal water must be injected back into the reservoir after it has been used for power production. Injection is critical in maximizing the power production and lifetime of the reservoir. To use injectate effectively the direction and velocity of the injected water must be known or inferred. This information can be obtained by using chemical tracers to track the subsurface flow paths of the injected fluid. Tracers are chemical compounds that are added to the water as it is injected back into the reservoir. The hot production water is monitored for the presence of this tracer using the most sensitive analytic methods that are economically feasible. The amount and concentration pattern of the tracer revealed by this monitoring can be used to evaluate how effective the injection strategy is. However, the tracers must have properties that suite the environment that they will be used in. This requires careful consideration and testing of the tracer properties. In previous and parallel investigations we have developed tracers that are suitable from tracing liquid water. In this investigation, we developed tracers that can be used for steam and mixed water/steam environments. This work will improve the efficiency of injection management in geothermal fields, lowering the cost of energy production and increasing the power output of these systems.

Michael C. Adams; Greg Nash

2004-03-01T23:59:59.000Z

409

Definition: Downhole Techniques | Open Energy Information  

Open Energy Info (EERE)

Downhole Techniques Downhole Techniques Jump to: navigation, search Dictionary.png Downhole Techniques Downhole techniques are measurements collected from a borehole environment which provide information regarding the character of formations and fluids intersected by a well. These petrophysical data are fundamental to developing the understanding of a geothermal reservoir.[1] View on Wikipedia Wikipedia Definition Petrophysics (from the Greek πέτρα, petra, "rock" and φύσις, physis, "nature") is the study of physical and chemical rock properties and their interactions with fluids. A major application of petrophysics is in studying reservoirs for the hydrocarbon industry. Petrophysicists are employed to help reservoir engineers and geoscientists understand the rock properties of the reservoir, particularly how pores in

410

Particle sorter comprising a fluid displacer in a closed-loop fluid circuit  

SciTech Connect

Disclosed herein are methods and devices utilizing a fluid displacer in a closed-loop fluid circuit.

Perroud, Thomas D. (San Jose, CA); Patel, Kamlesh D. (Dublin, CA); Renzi, Ronald F. (Tracy, CA)

2012-04-24T23:59:59.000Z

411

Application of the Volume-of-Fluid Method to the AdvectionCondensation Problem  

Science Conference Proceedings (OSTI)

The authors demonstrate the application of the volume of fluid (VOF) method, a specialized grid refinement technique, to the numerical simulation of clouds. In particular, it is shown that VOF eliminates most of the well-recognized numerical ...

Len Margolin; Jon M. Reisner; Piotr K. Smolarkiewicz

1997-09-01T23:59:59.000Z

412

Practical dynamic analysis of structures laterally vibrating in contact with water  

Science Conference Proceedings (OSTI)

This paper proposes a practical formulation to investigate the dynamic response of structures laterally vibrating in contact with water on one or both sides. The proposed technique accounts for structure's flexibility, soil flexibility, varying water ... Keywords: Dynamic analysis, Finite elements, Fluid-structure interaction, Hydrodynamic loads, Simplified formulations, Vibration periods

Benjamin Miquel; Najib Bouaanani

2011-12-01T23:59:59.000Z

413

Fully Coupled Well Models for Fluid Injection and Production  

SciTech Connect

Wells are the primary engineered component of geologic sequestration systems with deep subsurface reservoirs. Wells provide a conduit for injecting greenhouse gases and producing reservoirs fluids, such as brines, natural gas, and crude oil, depending on the target reservoir. Well trajectories, well pressures, and fluid flow rates are parameters over which well engineers and operators have control during the geologic sequestration process. Current drilling practices provided well engineers flexibility in designing well trajectories and controlling screened intervals. Injection pressures and fluids can be used to purposely fracture the reservoir formation or to purposely prevent fracturing. Numerical simulation of geologic sequestration processes involves the solution of multifluid transport equations within heterogeneous geologic media. These equations that mathematically describe the flow of fluid through the reservoir formation are nonlinear in form, requiring linearization techniques to resolve. In actual geologic settings fluid exchange between a well and reservoir is a function of local pressure gradients, fluid saturations, and formation characteristics. In numerical simulators fluid exchange between a well and reservoir can be specified using a spectrum of approaches that vary from totally ignoring the reservoir conditions to fully considering reservoir conditions and well processes. Well models are a numerical simulation approach that account for local conditions and gradients in the exchange of fluids between the well and reservoir. As with the mathematical equations that describe fluid flow in the reservoir, variation in fluid properties with temperature and pressure yield nonlinearities in the mathematical equations that describe fluid flow within the well. To numerically simulate the fluid exchange between a well and reservoir the two systems of nonlinear multifluid flow equations must be resolved. The spectrum of numerical approaches for resolving these equations varies from zero coupling to full coupling. In this paper we describe a fully coupled solution approach for well model that allows for a flexible well trajectory and screened interval within a structured hexahedral computational grid. In this scheme the nonlinear well equations have been fully integrated into the Jacobian matrix for the reservoir conservation equations, minimizing the matrix bandwidth.

White, Mark D.; Bacon, Diana H.; White, Signe K.; Zhang, Z. F.

2013-08-05T23:59:59.000Z

414

Standardization of Thermo-Fluid Modeling in Modelica.Fluid  

E-Print Network (OSTI)

This article discusses the Modelica.Fluid library that has been included in the Modelica Standard Library 3.1. Modelica.Fluid provides interfaces and basic components for the device-oriented modeling of onedimensional thermo-fluid flow in networks containing vessels, pipes, fluid machines, valves and fittings. A unique feature of Modelica.Fluid is that the component equations and the media models as well as pressure loss and heat transfer correlations are decoupled from each other. All components are implemented such that they can be used for media from the Modelica.Media library. This means that an incompressible or compressible medium, a single or a multiple substance medium with one or more phases might be used with one and the same model as long as the modeling assumptions made hold. Furthermore, trace substances are supported. Modeling assumptions can be configured globally in an outer System object. This covers in particular the initialization, uni- or bi-directional flow, and dynamic or steady-state formulation of mass, energy, and momentum balance. All assumptions can be locally refined for every component. While Modelica.Fluid contains a reasonable set of component models, the goal of the library is not to provide a comprehensive set of models, but rather to provide interfaces and best practices for the treatment of issues such as connector design and implementation of energy, mass and momentum balances. Applications from various domains are presented.

Rdiger Franke; et al.

2009-01-01T23:59:59.000Z

415

Intelligent Fluid Infrastructure for Embedded Networking  

E-Print Network (OSTI)

mobile element into the networking infrastructure.Our fluid infrastructure design saves significant energy inIntelligent Fluid Infrastructure for Embedded Networks Aman

Kansal, Aman; Somasundara, Arun; Jea, David C; Srivastava, Mani B; Estrin, D

2004-01-01T23:59:59.000Z

416

Intelligent Fluid Infrastructure for Embedded Networks  

E-Print Network (OSTI)

Intelligent Fluid Infrastructure for Embedded Networks Amanto develop a fluid infrastructure: mobile components arebuilt into the system infrastructure for enabling specific

Aman Kansal; Arun Somasundara; David Jea; Mani Srivastava; Deborah Estrin

2004-01-01T23:59:59.000Z

417

Seismicity And Fluid Geochemistry At Lassen Volcanic National Park,  

Open Energy Info (EERE)

Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two Circulation Cells In The Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two Circulation Cells In The Hydrothermal System Details Activities (7) Areas (2) Regions (0) Abstract: Seismic analysis and geochemical interpretations provide evidence that two separate hydrothermal cells circulate within the greater Lassen hydrothermal system. One cell originates south to SW of Lassen Peak and within the Brokeoff Volcano depression where it forms a reservoir of hot fluid (235-270°C) that boils to feed steam to the high-temperature

418

DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG  

Open Energy Info (EERE)

DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG GRAPHS Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG GRAPHS Details Activities (1) Areas (1) Regions (0) Abstract: This is the fourth paper in a series on developing fluid inclusion stratigraphy (FIS) as a logging tool for geothermal bore holes. Here we address methods of displaying analyses and plotting gas ratios used for data interpretation on mudlog plots. The goal is to develop a rapid method of data display and interpretation for the up to 10,000 analyses returned by a geothermal well FIS analysis. Author(s): Norman, D.I.; Dilley, L.M.; McCulloch, J. Published: PROCEEDINGS, Thirtieth Workshop on Geothermal Reservoir

419

Fluid Imaging | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Fluid Imaging Jump to: navigation, search Contents 1 Geothermal Lab Call Projects for Fluid Imaging 2 Geothermal ARRA Funded Projects for Fluid Imaging Geothermal Lab Call Projects for Fluid Imaging Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":200,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026 further results","default":"","geoservice":"google","zoom":14,"width":"600px","height":"350px","centre":false,"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":"","icon":"","visitedicon":"","forceshow":true,"showtitle":true,"hidenamespace":false,"template":false,"title":"","label":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"locations":[{"text":"

420

Visually simulating realistic fluid motion  

E-Print Network (OSTI)

In this thesis we investigate various methods for visually simulating fluid flow. The focus is on implementing effective fluid simulation within an interactive animation system. Two implementations have been developed based on derivations and simplifications of the Navier-Stokes' equations. The first implementation is the most accurate and follows the physics of fluid dynamics more closely. However, the high computation times incurred by this implementation make it inappropriate as an interactive method. The second approach is not as accurate as the first one, however it incurs lower computation times. This second method is only able to model a subset of the total fluid behavior. The second method has been integrated into an interactive modeling and animation environment. Several examples are included.

Naithani, Priyanka

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis techniques fluid" 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

Deferring trust in fluid replication  

Science Conference Proceedings (OSTI)

Mobile nodes rely on external services to provide safety, sharing, and additional resources. Unfortunately, as mobile nodes move through the networking infrastructure, the costs of accessing servers change. Fluid replication allows mobile clients to ...

Brian D. Noble; Ben Fleis; Landon P. Cox

2000-09-01T23:59:59.000Z

422

Bio-inspired fluid locomotion  

E-Print Network (OSTI)

We have developed several novel methods of locomotion at low Reynolds number, for both Newtonian and non-Newtonian fluids: Robosnails 1 and 2, which operate on a lubrication layer, and the three-link swimmer which moves ...

Chan, Brian, 1980-

2009-01-01T23:59:59.000Z

423

Definition: Composition Analysis | Open Energy Information  

Open Energy Info (EERE)

Composition Analysis Jump to: navigation, search Dictionary.png Composition Analysis Composition analysis is used to relate surface fluid properties and geologic data to geothermal...

424

Free energy in the statistical theory of fluids  

Science Conference Proceedings (OSTI)

Explicit formulas for the excess chemical potential and Helmholtz free energy have been derived in different ways making use of a functional integration technique. The method employed is an extension of the Kirkwood charging procedure and involves a new way of renormalizing cluster series. The formulas require only the correlation functions for the system under investigation. New and old ways of calculating the free energy of a simple fluid are compared and discussed. Numerical results for the various closures are presented for hard and Lennard?Jones sphere fluids. A bridge functional of the first kind has been introduced and some approximations for this have been proposed and tested.

O. E. Kiselyov; G. A. Martynov

1990-01-01T23:59:59.000Z

425

Evaluation of the relationship between fracture conductivity, fracture fluid production, and effective fracture length  

E-Print Network (OSTI)

Low-permeability gas wells often produce less than predicted after a fracture treatment. One of the reasons for this is that fracture lengths calculated after stimulation are often less than designed lengths. While actual fracture lengths may be shorter due to fracture growth out of zone, improper proppant settling, or proppant flowback, short calculated fracture lengths can also result from incorrect analysis techniques. It is known that fracturing fluid that remains in the fracture and formation after a hydraulic fracture treatment can decrease the productivity of a gas well by reducing the relative permeability to gas in the region invaded by this fluid. However, the relationships between fracture fluid cleanup, effective fracture length, and well productivity are not fully understood. In this work I used reservoir simulation to determine the relationship between fracture conductivity, fracture fluid production, effective fracture length, and well productivity. I simulated water saturation and pressure profiles around a propped fracture, tracked gas production along the length of the propped fracture, and quantified the effective fracture length (i.e., the fracture length under single-phase flow conditions that gives similar performance as for multiphase flow conditions), the "cleanup" fracture length (i.e., the fracture length corresponding to 90% cumulative gas flow rate into the fracture), and the "apparent" fracture length (i.e., the fracture length where the ratio of multiphase to single-phase gas entry rate profiles is unity). This study shows that the proppant pack is generally cleaned up and the cleanup lengths are close to designed lengths in relatively short times. Although gas is entering along entire fracture, fracturing fluid remains in the formation near the fracture. The water saturation distribution affects the gas entry rate profile, which determines the effective fracture length. Subtle changes in the gas rate entry profile can result in significant changes in effective fracture length. The results I derived from this work are consistent with prior work, namely that greater fracture conductivity results in more effective well cleanup and longer effective fracture lengths versus time. This study provides better explanation of mechanisms that affect fracturing fluid cleanup, effective fracture length, and well productivity than previous work.

Lolon, Elyezer P.

2004-12-01T23:59:59.000Z

426

Isotopic Analysis At Cascades Region (Kennedy & Van Soest, 2007) | Open  

Open Energy Info (EERE)

Analysis At Cascades Region (Kennedy & Van Soest, 2007) Analysis At Cascades Region (Kennedy & Van Soest, 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Cascades Region (Kennedy & Van Soest, 2007) Exploration Activity Details Location Cascades Geothermal Region Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful regional reconnaissance DOE-funding Unknown Notes The correspondence of helium isotope ratios and active transtensional deformation indicates a deformation-enhanced permeability and that mantle fluids can penetrate the ductile lithosphere, even in regions where there is no substantial magmatism. Superimposed on the regional trend are local, high 3He/4He anomalies indicating hidden magmatic activity and/or deep

427

Underhood Thermal Management [Heat Transfer and Fluid Mechanics] - Nuclear  

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

Underhood Thermal Underhood Thermal Management Capabilities Engineering Computation and Design Engineering and Structural Mechanics Systems/Component Design, Engineering and Drafting Heat Transfer and Fluid Mechanics Overview Thermal Hydraulic Optimization of Nuclear Systems Underhood Thermal Management Combustion Simulations Advanced Model and Methodology Development Multi-physics Reactor Performance and Safety Simulations Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Heat Transfer and Fluid Mechanics Bookmark and Share Underhood Thermal Management Hybrid Vehicle Underhood Thermal Analysis Hybrid Vehicle Underhood Thermal Analysis. Click on image to view larger image. In addition to nuclear system applications, the section applies its

428

Compound and Elemental Analysis At Coso Geothermal Area (1991) | Open  

Open Energy Info (EERE)

1) 1) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Coso Geothermal Area (1991) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Compound and Elemental Analysis Activity Date 1991 Usefulness useful DOE-funding Unknown Exploration Basis Determine the fluid origin by looking at variations in dissolved gas compositions of reservoir fluids Notes Gas concentrations and ratios in 110 analyses of geothermal fluids from 47 wells in the Coso geothermal system illustrate the complexity of this two-phase reservoir in its natural state. Two geographically distinct regions of single-phase (liquid) reservoir are present and possess distinctive gas and liquid compositions. Steam sampled from wells in the

429

Pitch-catch only ultrasonic fluid densitometer  

DOE Patents (OSTI)

The present invention is an ultrasonic fluid densitometer that uses a material wedge and pitch-catch only ultrasonic transducers for transmitting and receiving ultrasonic signals internally reflected within the material wedge. Density of a fluid is determined by immersing the wedge into the fluid and measuring reflection of ultrasound at the wedge-fluid interface.

Greenwood, Margaret S. (Richland, WA); Harris, Robert V. (Pasco, WA)

1999-01-01T23:59:59.000Z

430

Global Precipitation Estimates Based on a Technique for Combining Satellite-Based Estimates, Rain Gauge Analysis, and NWP Model Precipitation Information  

Science Conference Proceedings (OSTI)

The satellite-gauge-model (SGM) technique is described for combining precipitation estimates from microwave satellite data, infrared satellite data, rain gauge analyses, and numerical weather prediction models into improved estimates of global ...

George J. Huffman; Robert F. Adler; Bruno Rudolf; Udo Schneider; Peter R. Keehn

1995-05-01T23:59:59.000Z

431

Calibration method and apparatus for measuring the concentration of components in a fluid  

DOE Patents (OSTI)

A calibration method and apparatus for use in measuring the concentrations of components of a fluid is provided. The measurements are determined from the intensity of radiation over a selected range of radiation wavelengths using peak-to-trough calculations. The peak-to-trough calculations are simplified by compensating for radiation absorption by the apparatus. The invention also allows absorption characteristics of an interfering fluid component to be accurately determined and negated thereby facilitating analysis of the fluid. 7 figures.

Durham, M.D.; Sagan, F.J.; Burkhardt, M.R.

1993-12-21T23:59:59.000Z

432

Ultracentrifuge for separating fluid mixtures  

DOE Patents (OSTI)

1. A centrifuge for the separation of fluid mixtures having light and heavy fractions comprising a cylindrical rotor, disc type end-plugs closing the ends of the rotor, means for mounting said rotor for rotation about its cylindrical axis, a housing member enclosing the rotor, a vacuum chamber in said housing about the central portion of the rotor, a collection chamber at each end of the housing, the innermost side of which is substantially formed by the outer face of the end-plug, means for preventing flow of the fluid from the collection chambers to said vacuum chamber, at least one of said end-plugs having a plurality of holes therethrough communicating between the collection chamber adjacent thereto and the inside of the rotor to induce countercurrent flow of the fluid in the centrifuge, means for feeding fluid to be processed into the centrifuge, means communicating with the collection chambers to extract the light and heavy separated fractions of the fluid, and means for rotating the rotor.

Lowry, Ralph A. (Charlottesville, VA)

1976-01-01T23:59:59.000Z

433

Fluid Metrology Calibration Services - Gas, Water, or Liquid ...  

Science Conference Proceedings (OSTI)

Fluid Metrology Calibration Services - Gas, Water, Natural Gas, or Liquid Hydrocarbon Flows Special Tests. Fluid Metrology ...

2013-01-25T23:59:59.000Z

434

Geothermal fluid genesis in the Great Basin  

DOE Green Energy (OSTI)

Early theories concerning geothermal recharge in the Great Basin implied recharge was by recent precipitation. Physical, chemical, and isotopic differences between thermal and non-thermal fluids and global paleoclimatic indicators suggest that recharge occurred during the late Pleistocene. Polar region isotopic studies demonstrate that a depletion in stable light-isotopes of precipitation existed during the late Pleistocene due to the colder, wetter climate. Isotopic analysis of calcite veins and packrat midden megafossils confirm the depletion event occurred in the Great Basin. Isotopic analysis of non-thermal springs is utilized as a proxy for local recent precipitation. Contoured plots of deuterium concentrations from non-thermal and thermal water show a regional, systematic variation. Subtracting contoured plots of non-thermal water from plots of thermal water reveals that thermal waters on a regional scale are generally isotopically more depleted. Isolated areas where thermal water is more enriched than non-thermal water correspond to locations of pluvial Lakes Lahontan and Bonneville, suggesting isotopically enriched lake water contributed to fluid recharge. These anomalous waters also contain high concentrations of sodium chloride, boron, and other dissolved species suggestive of evaporative enrichment. Carbon-age date and isotopic data from Great Basin thermal waters correlate with the polar paleoclimate studies. Recharge occurred along range bounding faults. 151 refs., 62 figs., 15 tabs.

Flynn, T.; Buchanan, P.K.

1990-01-01T23:59:59.000Z

435

Use of solid-state NMR techniques for the analysis of water in coal and the effect of different coal drying techniques on the structure and reactivity of coal  

SciTech Connect

The overall objectives of this study are to develop an NMR method for measuring the water in coal, to measure the changes in coal structure that occur during coal drying, to determine what effect water has on retrograde/condensation reactions, and to determine the mechanism by which water may enhance coal reactivity toward liquefaction. Different methods of drying will be investigated to determine if drying can be accomplished without destroying coal reactivity toward liquefaction, thereby making coal drying an attractive and economical method for coal pretreatment. Coal drying methods will include thermal drying under different atmospheres and temperatures, drying with microwave radiation, and low-temperature chemical dehydration. The objective for this quarterly report were (1) to determine the limit of detection of water by NMR, (2) to determine the reproducibility of the NMR integration method using the Lab Cal {sup {trademark}} PC software, (3) to determine the amount of water in standard solutions, and (4) to determine the amount of water in a coal sample. The studies performed this last quarter have shown that the {sup 1}H NMR method for determining water in a coal sample via the reaction with 2,2-dimethoxypropane will be suitable for determining the water content in coals. The method should be most suitable for coals having low moisture content; that is, those coals which have been subjected to other drying techniques. 9 refs., 1 tab.

Netzel, D.A.

1991-01-01T23:59:59.000Z

436

Fluid dynamics of bacterial turbulence  

E-Print Network (OSTI)

Self-sustained turbulent structures have been observed in a wide range of living fluids, yet no quantitative theory exists to explain their properties. We report experiments on active turbulence in highly concentrated 3D suspensions of Bacillus subtilis and compare them with a minimal fourth-order vector-field theory for incompressible bacterial dynamics. Velocimetry of bacteria and surrounding fluid, determined by imaging cells and tracking colloidal tracers, yields consistent results for velocity statistics and correlations over two orders of magnitude in kinetic energy, revealing a decrease of fluid memory with increasing swimming activity and linear scaling between energy and enstrophy. The best-fit model parameters allow for quantitative agreement with experimental data.

Jrn Dunkel; Sebastian Heidenreich; Knut Drescher; Henricus H. Wensink; Markus Br; Raymond E. Goldstein

2013-02-21T23:59:59.000Z

437

Fluid-Rock Characterization and Interactions in NMR Well Logging  

DOE Green Energy (OSTI)

The objective of this project is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. This is the first annual progress report submitted to the DOE. It reports on the work completed during the reporting period even if it may have started before this period. This project is a partnership between Professor George J. Hirasaki at Rice University and Professor Kishore Mohanty at University of Houston. In addition to the DOE, this project is supported by a consortium of oil companies and service companies. The fluid properties characterization has emphasized the departure of live oils from correlations based on dead oils. Also, asphaltic components can result in a difference between the T1 and T2 relaxation time distributions as well as reduce the hydrogen index. The fluid rock characterizations that are reported here are the effects of wettability and internal magnetic field gradients. A pore reconstruction method ha s been developed to recreate three-dimensional porous media from two-dimensional images that reproduce some of their key statistical properties. A Monte Carlo simulation technique has been developed to calculate the magnetization decay in fluid saturated porous media given their pore structure.

Hirasaki, George J.; Mohanty, Kishore, K.

2001-07-13T23:59:59.000Z

438

Wellbottom fluid implosion treatment system  

DOE Patents (OSTI)

A system for inducing implosion shock forces on perforation traversing earth formations with fluid pressure where an implosion tool is selected relative to a shut in well pressure and a tubing pressure to have a large and small area piston relationship in a well tool so that at a predetermined tubing pressure the pistons move a sufficient distance to open an implosion valve which permits a sudden release of well fluid pressure into the tubing string and produces an implosion force on the perforations. A pressure gauge on the well tool records tubing pressure and well pressure as a function of time.

Brieger, Emmet F. (HC 67 Box 58, Nogal, NM 88341)

2001-01-01T23:59:59.000Z