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1

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection |  

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

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection August 13, 2013 - 1:59pm Addthis Photo by J.D. Griggs, courtesy of U.S.Geological Survey Photo by J.D. Griggs, courtesy of U.S.Geological Survey For Additional Information To learn more about the carbon storage projects in which NETL is involved, please visit the NETL Carbon Storage website How can a prehistoric volcanic eruption help us reduce the amount of CO2 released into the atmosphere today? The answer is found in the basalt formations created by the lava - formations that can be used as sites for injecting carbon dioxide (CO2) captured from industrial sources in a process called carbon capture and storage (CCS).

2

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection |  

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

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection August 13, 2013 - 1:59pm Addthis Photo by J.D. Griggs, courtesy of U.S.Geological Survey Photo by J.D. Griggs, courtesy of U.S.Geological Survey For Additional Information To learn more about the carbon storage projects in which NETL is involved, please visit the NETL Carbon Storage website How can a prehistoric volcanic eruption help us reduce the amount of CO2 released into the atmosphere today? The answer is found in the basalt formations created by the lava - formations that can be used as sites for injecting carbon dioxide (CO2) captured from industrial sources in a process called carbon capture and storage (CCS).

3

Nature and extent of lava-flow aquifers beneath Pahute Mesa, Nevada Test Site  

SciTech Connect (OSTI)

Work is currently underway within the Underground Test Area subproject of the US Department of Energy/Nevada Operations Office Environmental Restoration Program to develop corrective action plans in support of the overall corrective action strategy for the Nevada Test Site as established in the Federal Facility Agreement and Consent Order (FFACO, 1996). A closure plan is currently being developed for Pahute Mesa, which has been identified in the FFACO as consisting of the Western and Central Pahute Mesa Corrective Action Units. Part of this effort requires that hydrogeologic data be compiled for inclusion in a regional model that will be used to predict a contaminant boundary for these Corrective Action Units. Hydrogeologic maps have been prepared for use in the model to define the nature and extent of aquifers and confining units that might influence the flow of contaminated groundwater from underground nuclear tests conducted at Pahute Mesa. Much of the groundwater flow beneath Pahute Mesa occurs within lava-flow aquifers. An understanding of the distribution and hydraulic character of these important hydrogeologic units is necessary to accurately model groundwater flow beneath Pahute Mesa. This report summarizes the results of a study by Bechtel Nevada geologists to better define the hydrogeology of lava-flow aquifers at Pahute Mesa. The purpose of this study was twofold: (1) aid in the development of the hydrostratigraphic framework for Pahute Mesa, and (2) provide information on the distribution and hydraulic character of lava-flow aquifers beneath Pahute Mesa for more accurate computer modeling of the Western and Central Pahute Mesa Corrective Action Units.

Prothro, L.B.; Drellack, S.L. Jr.

1997-09-01T23:59:59.000Z

4

A Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji  

Open Energy Info (EERE)

Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji Details Activities (0) Areas (0) Regions (0) Abstract: At Rakiraki in northeastern Viti Levu, the Pliocene Ba Volcanic Group comprises gently dipping, pyroxene-phyric basaltic lavas, including pillow lava, and texturally diverse volcanic breccia interbedded with conglomerate and sandstone. Three main facies associations have been identified: (1) The primary volcanic facies association includes massive basalt (flows and sills), pillow lava and related in-situ breccia (pillow-fragment breccia, autobreccia, in-situ hyaloclastite, peperite).

5

Rate of deformation in the Pasco Basin during the Miocene as determined by distribution of Columbia River basalt flows  

SciTech Connect (OSTI)

Detailed mapping of over 8000 square kilometers and logs from 20 core holes were used to determine the distribution and thickness of basalt flows and interbeds in the Pasco Basin. The data indicate the high-MgO Grande Ronde Basalt and Wanapum Basalt thicken from the northeast to the southwest. Deformation began in late Frenchman Springs time in the Saddle Mountains along a northwest-southeast trend and in Roza time along an east-west trend. By late Wanapum time, basalt flows were more restricted on the east side. Saddle Mountains Basalt flows spread out in the basin from narrow channels to the east. The Umatilla Member entered from the southeast and is confined to the south-central basin, while the Wilbur Creek, Asotin, Esquatzel, Pomona, and Elephant Mountain Members entered from the east and northeast. The distribution of these members is controlled by flow volume, boundaries of other flows, and developing ridges. The Wilbur Creek, Asotin, and Esquatzel flows exited from the basin in a channel along the northern margin of the Umatilla flow, while the Pomona and Elephant Mountain flows exited between Umtanum Ridge and Wallula Gap. The thickness of sedimentary interbeds and basalt flows indicated subsidence and/or uplift began in post-Grande Ronde time (14.5 million years before present) and continued through Saddle Mountains time (10.5 million years before present). Maximum subsidence occurred 40 kilometers (24 miles) north of Richland, Washington with an approximate rate of 25 meters (81 feet) per million years during the eruption of the basalt. Maximum uplift along the developing ridges was 70 meters (230 feet) per million years.

Reidel, S.P.; Ledgerwood, R.K.; Myers, C.W.; Jones, M.G.; Landon, R.D.

1980-03-01T23:59:59.000Z

6

A paleomagnetic study of the Mull lava succession  

Science Journals Connector (OSTI)

......as evaluated from historic Hawaiian lava flows...magnetization in some Permian lava flows of southern...Mountains and Sverdrup Basin, and Brooks Range...structures of the Arctic Basin and its environs...as evaluated from historic Hawaiian lava flows...magnetization in some Permian lava flows of Strangway......

James M. Hall; R. L. Wilson; Peter Dagley

1977-05-01T23:59:59.000Z

7

The influence of wind on the estimation of lava effusion rate from thermal remote-sensing  

Science Journals Connector (OSTI)

Abstract Effusion rate is a key parameter to model lava flow advance and associated risks. Estimation of effusion rate from thermal remote-sensing using satellite data has matured to the point where it can be an operational monitoring tool, notably for volcanoes without a ground observatory. However, robust physical models, as required for quantitative interpretations, have not yet been adequately developed. The current and widely used method relates the satellite-measured radiated power to the flow effusion rate through the lava area, with an empirical fit that assumes a low surface cooling efficiency. Here we use novel fluid dynamic laboratory experiments and viscous flow theory to show that assuming low convective cooling at the surface of the flow leads to a systematic underestimation of the effusion rate. This result, obtained for the case of a hot isoviscous gravity current which cools as it flows, relies only on the respective efficiency of convection and radiation at the flow surface, and is independent of the details of the internal flow model. Applying this model to lava flows cooling under classical wind conditions, we find that the model compares well to data acquired on basaltic eruptions within the error bars corresponding to the uncertainties on natural wind conditions. Hence the thermal proxy deduced from the isoviscous model does not seem to require an additional fitting parameter accounting for internal flow processes such as crystallization. The predictions of the model are not correct however for thick lava flows such as highly viscous domes, because a thermal steady state is probably not reached for these flows. Furthermore, in the case of very large basaltic flows, extra cooling is expected due to self-induced convection currents. The increased efficiency of surface cooling for these large eruptions must be taken into account to avoid a gross – and dangerously misleading – underestimate of the effusion rate.

F. Garel; E. Kaminski; S. Tait; A. Limare

2013-01-01T23:59:59.000Z

8

A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres,  

Open Energy Info (EERE)

Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Details Activities (0) Areas (0) Regions (0) Abstract: Three Quaternary volcanic centres (Sverrefjell, Sigurdfjell and Halvdanpiggen) in northwestern Spitsbergen formed by off-ridge alkali basaltic volcanism associated with nearby ocean-floor spreading and subsequent tectonism. The Sverrefjell volcano is a unique stratovolcano constructed of primitive alkali basaltic pyroclastics with subordinate lavas. About 15-20 vol.% of this volcanic (and the other centres) comprises

9

Paleomagnetism of Midway Atoll lavas and northward movement of the Pacific plate  

Science Journals Connector (OSTI)

Two deep drill holes through the reef limestones of Midway Atoll penetrated 120 m and 19 m of basaltic lavas that were dated by the \\{KAr\\} method at 18 my. Inclinations of natural remanent magnetization have been measured in 173 specimens cut from 57 core samples from 13 of the lava flows. The mean paleomagnetic inclination is27.6° ± 6.8°, corresponding to a paleolatitude of14.7° ± 4.2°. The present latitude of Midway is 28°, suggesting a northward component of motion of the Pacific plate of approximately 13° or 1400 km in the last 18 my. The paleolatitude of Midway is thus not significantly different from the present latitude (19°) of the active volcanic island of Hawaii. The paleomagnetic data from the Midway basalts thus support the hypothesis of Wilson and Morgan that volcanic heat sources are fixed with respect to the Earth's mantle below the asthenosphere and their apparent migration with time is due to plate motion.

Sherman Grommé; F.J. Vine

1972-01-01T23:59:59.000Z

10

BASALT ALTERATION AND BASALT-WASTE INTERACTION IN THE PASCO BASIN OF WASHINGTON STATE  

E-Print Network [OSTI]

REFERENCES Ames, L. L. , Hanford basalt flow mineralogy, inProgress report for the Hanford Waste Isolation Project,ST-137, Atlantic Richfield Hanford Company, Richland, Wa. ,

Benson, L.V.

2011-01-01T23:59:59.000Z

11

Carbon dioxide sequestration in deep-sea basalt  

Science Journals Connector (OSTI)

...lavas, commonly having large voids between lobes and...across the area, forming large interpillow voids. Image scale...sediments (31). From drilling studies, the basalts...because of the enlarged borehole diameter. Core and downhole...the Integrated Ocean Drilling Program database (http...

David S. Goldberg; Taro Takahashi; Angela L. Slagle

2008-01-01T23:59:59.000Z

12

Lithium isotopes in global mid-ocean ridge basalts Paul B. Tomascak a,*, Charles H. Langmuir b  

E-Print Network [OSTI]

Lithium isotopes in global mid-ocean ridge basalts Paul B. Tomascak a,*, Charles H. Langmuir b January 2008 Abstract The lithium isotope compositions of 30 well-characterized samples of glassy lavas

Langmuir, Charles H.

13

238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc  

Open Energy Info (EERE)

238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc Details Activities (0) Areas (0) Regions (0) Abstract: Activities of 238U decay series radioisotopes have been determined for both postcaldera basalts erupted between 1849 and 1974 and genetically related young precaldera dacites from Batur volcano, Bali, Sunda arc. All rocks possess (230Th/238U) = 1 within 2 sigma error indicating that little, if any, fractionation between Th and U occurred during their genesis, or in their source regions, within approximately the last 350 ka. Both the basaltic and the dacitic rocks possess (230Th/232U) ~

14

Analytical-Numerical Modeling Of Komatiite Lava Emplacement And Thermal  

Open Energy Info (EERE)

Analytical-Numerical Modeling Of Komatiite Lava Emplacement And Thermal Analytical-Numerical Modeling Of Komatiite Lava Emplacement And Thermal Erosion At Perseverance, Western Australia Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Analytical-Numerical Modeling Of Komatiite Lava Emplacement And Thermal Erosion At Perseverance, Western Australia Details Activities (0) Areas (0) Regions (0) Abstract: We have applied a thermal-fluid dynamic-geochemical model to investigate the emplacement and erosional potential of Archean komatiite flows at Perseverance, Western Australia. Perseverance has been proposed as a site of large-scale thermal erosion by large-volume komatiite eruption(s), resulting in a 100-150-m-deep lava channel containing one of the world's largest komatiite-hosted Fe-Ni-Cu-(PGE) sulfide deposits. Using

15

A chemostratigraphic investigation of the prehistoric Vavalaci lava sequence on Mount Etna: Simulating borehole drilling  

Science Journals Connector (OSTI)

Scientific drilling of volcanic successions has been suggested as a way of establishing stratigraphic sequences of unexposed lava flows on large complex volcanoes, with the aim of in-depth study of magmatic processes and source geochemistry of otherwise inaccessible lava sequences. To simulate the core drilling of such sequences, lava flows from the prehistoric Vavalaci Centre exposed in the south wall of the Valle del Bove, Mount Etna, Sicily, were sampled in four stratigraphic sections. The fresh, generally strongly porphyritic Na-alkaline trachybasalts and trachyandesites show diverging sub-parallel trends of high- and low-alkali concentrations in total alkali versus silica (TAS) diagrams, whilst variations of other major and trace elements reveal two further distinct chemical groups enriched in K, REE and Ti which follow separate fractionation paths. A set of control samples was used to establish geochemical variations within a single lava flow. Primitive mantle normalised incompatible element patterns demonstrate that the lavas have highly enriched OIB signatures with a clear division in LREE, Ba, Th, Nb and Zr concentrations between the four different chemical groups. Comparison of data for the Vavalaci lavas with the compositions of other prehistoric, historic and recent eruptions of Mt. Etna indicates a temporal trend towards more basic magma compositions. The chemostratigraphy of the lavas was statistically analysed to give correlations between flows from different sections. Whilst a good number of geologically meaningful correlations were revealed, we can demonstrate that only one set of lavas was actually sampled in all four sections, whilst a number of unique lavas remain uncorrelated. Thus no individual section, or simulated borehole core, provided samples of the complete lava flow sequence without significant gaps in the stratigraphy. The trends in lava compositions are also defined in the stratigraphy, showing their evolution from low- to high-alkali lavas through the series, which may be related to temporal decrease in degree of partial melting of the mantle rather than through simple fractionation processes or mixing of magmas.

Ann Spence; Hilary Downes

2011-01-01T23:59:59.000Z

16

Southern Cordilleran Basaltic Andesite suite, southern Chihuahua, Mexico: A link between Tertiary continental arc and flood basalt magmatism in the North America  

SciTech Connect (OSTI)

Mid-Cenozoic orogenic andesites and ignimbrites of western Mexico, southwestern New Mexico, and Arizona are commonly capped by basaltic andesites, most from 29--20 Ma. We refer to these mafic lavas as the Southern Cordilleran Basaltic Andesite (SCORBA) suite, and they may constitute the most extensive Cenozoic basaltic suite in North America. The SCORBA suite has trace element and isotopic characteristics of orogenic (arc) rocks (i.g., Ba/Nb/gt/40), and silica content (53--56% SiO/sub 2/) like the Grande Ronde Basalt, which represents about 80% of the volume of the Columbia River Group. Geochemical and isotopic data are presented on SCORBA lavas and rare mafic lavas (PRE-SCORBA) interlayered with older ignimbrites from a 700-km-long NE-SW transect of southern Chihuahua, Mexico. SCORBA and PRE-SCORBA lavas with relatively low K/P (/lt/7) and differing Ba/Nd (50 versus 18) have similar isotopic compositions, arguing against their isotopic signatures being controlled by crustal assimilation. Along the entire length of the transect, the basaltic rocks have /var epsilon//sub Nd/ and /sup 87/Sr//sup 86/Sr near bulk Earth and /sup 206/Pb//sup 204/Pb and /sup 207/Pb//sup 204/Pb ratios that lie along a 1.7 Ga pseudoisochron. The Pb isotopic variation is geographically controlled, becoming more radiogenic from east to west, reflecting mixing in mantle source regions. The eastern mantle source has low/sup 206/Pb//sup 204/Pb and is a mixture of an enriched, enriched-mantle-like (EMI) component with one or more depleted components, which could include an intraplate component with relatively high Nb/Y (/gt/0.8).

Cameron, K. L.; Nimz, G. J.; Kuentz, D.; Niemeyer, S.; Gunn, S.

1989-06-10T23:59:59.000Z

17

Preliminary assessment of regional dispersivity of the Hanford basalts  

E-Print Network [OSTI]

A HANFORD SITE Yakima ) BOUNDARY REFERENCE m I REPOSITORY LOCATION. . . . COLD CREEK . 4 SYNCLINE "+-. . """. . . ~ . Richland Pasco Prosser f Kennewick WALLULA GAP Figure 1. Hanford Site location. tiirahluke Syncline 1FDRD McGEE ~ ~ Ehi... MEMBER & SADDLE MOUNTA IN 5 BASALT PRIEST RAPIDS MEMBER ROCKY COULEE FLO -2000 -3000 -4000 -750 -1000 -1250 GRANDE RONDE BASALT COHASSETT FLOW McCQY ~ CANYON UMTANUM FLOW TD = 1053 m (3396 ff) TO =1034 m (3335 N) VE =25X FRENCHMAN...

LaVenue, Arthur Marsh

1985-01-01T23:59:59.000Z

18

Journal of Volcanology and Geothermal Research69 (1995) 105-l 16 Mount St. Helens and Santiaguito lava domes: The effect of short-  

E-Print Network [OSTI]

of silicic lava flows, we studied surface characteristics and obtained water content and hydrogen isotopic for these patterns is most clearly preserved in lavas erupted during early, rapid stages of dome growth. Petrologists to sample flows early in their emplacement while paying attention to surface texture, position relative

Rose, William I.

19

Factors controlling the morphology of monogenetic basaltic volcanoes: The Holocene volcanism of Gran Canaria (Canary Islands, Spain)  

Science Journals Connector (OSTI)

A detailed morphometric analysis was performed on the 24 Holocene eruptions of Gran Canaria, a nearly circular island located at the centre of the Canary Islands (Spain), developed as result of the eastward movement of the African plate over a mantle hotspot. Rigorous field work was carried out to generate a palaeogeomorphological reconstruction of the Holocene eruptions of Gran Canaria to obtain pre- and post-eruption digital terrain models (DTMs). These eruptions were of Strombolian monogenetic basaltic volcanism style. With respect to the cones, feeder fissures determine their location and some morphological features as crater openings which are usually perpendicular to the slope direction. In addition, the trade winds influence the final volcanic edifice shape and the extent of the pyroclastic sheet-like fall deposits. For the lava flows, the most significant controls are the eruption rate, affecting the maximum distance travelled, and the gully slope and shape that condition their flow path. Concerning volcanic hazard and risk assessment, the applied methodology has led to a better understanding of the recent eruptions and foresees the location and nature of future eruptions.

A. Rodriguez-Gonzalez; J.L. Fernandez-Turiel; F.J. Perez-Torrado; R. Paris; D. Gimeno; J.C. Carracedo; M. Aulinas

2012-01-01T23:59:59.000Z

20

How lava flows: New insights from applications of lidar technologies to lava flow studies  

Science Journals Connector (OSTI)

...systems record the entire waveform of the energy pulse that is backscattered from the reflecting...on lahars from Popocatepetl Volcano, Mexico: Journal of Volcanology and Geothermal...reconstruction of geohistory in the age of reform : Chicago, Illinois, University of Chicago...

K.V. Cashman; S.A. Soule; B.H. Mackey; N.I. Deligne; N.D. Deardorff; H.R. Dietterich

Note: This page contains sample records for the topic "basaltic lava flows" 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

Preliminary Hydrogeologic Characterization Results from the Wallula Basalt Pilot Study  

SciTech Connect (OSTI)

The DOE's Big Sky Regional Carbon Sequestration Partnership has completed drilling the first continental flood basalt sequestration pilot borehole to a total depth (TD) of 4,110 feet on the Boise White Paper Mill property at Wallula, Washington. Site suitability was assessed prior to drilling by the 2007-2008 acquisition, processing and analysis of a four-mile, five-line three component seismic swath, which was processed as a single data-dense line. Analysis of the seismic survey data indicated a composite basalt formation thickness of {approx}8,000 feet and absence of major geologic structures (i.e., faults) along the line imaged by the seismic swath. Drilling of Wallula pilot borehole was initiated on January 13, 2009 and reached TD on April 6, 2009. Based on characterization results obtained during drilling, three basalt breccia zones were identified between the depth interval of 2,716 and 2,910 feet, as being suitable injection reservoir for a subsequent CO2 injection pilot study. The targeted injection reservoir lies stratigraphically below the massive Umtanum Member of the Grande Ronde Basalt, whose flow-interior section possesses regionally recognized low-permeability characteristics. The identified composite injection zone reservoir provides a unique and attractive opportunity to scientifically study the reservoir behavior of three inter-connected reservoir intervals below primary and secondary caprock confining zones. Drill cuttings, wireline geophysical logs, and 31one-inch diameter rotary sidewall cores provided geologic data for characterization of rock properties. XRF analyses of selected rock samples provided geochemical characterizations of the rocks and stratigraphic control for the basalt flows encountered by the Wallula pilot borehole. Based on the geochemical results, the pilot borehole was terminated in the Wapshilla Ridge 1 flow of the Grande Ronde Basalt Formation. Detailed hydrologic test characterizations of 12 basalt interflow reservoir zones and 3 flow-interior/caprock intervals were performed during drilling and immediately following reaching the final borehole drilling depth (i.e., 4,110 ft). In addition, six of the 12 basalt interflow zones were selected for detailed hydrochemical characterization. Results from the detailed hydrologic test characterization program provided the primary information on basalt interflow zone transmissivity/injectivity, and caprock permeability characteristics.

B.P. McGrail; E. C. Sullivan; F. A. Spane; D. H. Bacon; G. Hund; P. D. Thorne; C. J. Thompson; S. P. Reidel; F. S. Colwell

2009-12-01T23:59:59.000Z

22

Lava Creek Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Lava Creek Geothermal Area Lava Creek Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Lava Creek Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":65.2283,"lon":-162.894,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

23

Conceptual model for regional radionuclide transport from a basalt repository site. Final draft, technical memorandum  

SciTech Connect (OSTI)

This technical memorandum was prepared to: (1) describe a typical basalt radionuclide repository site, (2) describe geologic and hydrologic processes associated with regional radionuclide transport in basalts, (3) define the parameters required to model regional radionuclide transport from a basalt repository site, and (4) develop a ''conceptual model'' of radionuclide transport from a basalt repository site. In a general hydrological sense, basalts may be described as layered sequences of aquifers and aquitards. The Columbia River Basalt, centered near the semi-arid Pasco Basin, is considered by many to be typical basalt repository host rock. Detailed description of the flow system including flow velocities with high-low hydraulic conductivity sequences are not possible with existing data. However, according to theory, waste-transport routes are ultimately towards the Columbia River and the lengths of flow paths from the repository to the biosphere may be relatively short. There are many physical, chemical, thermal, and nuclear processes with associated parameters that together determine the possible pattern of radionuclide migration in basalts and surrounding formations. Brief process descriptions and associated parameter lists are provided. Emphasis has been placed on the use of the distribution coefficient in simulating ion exchange. The use of the distribution coefficient approach is limited because it takes into account only relatively fast mass transfer processes. In general, knowledge of hydrogeochemical processes is primitive.

Walton, W.C.; Voorhees, M.L.; Prickett, T.A.

1980-05-23T23:59:59.000Z

24

Hydrologic testing methodology and results from deep basalt boreholes  

SciTech Connect (OSTI)

The objective of the hydrologic field-testing program is to provide data for characterization of the groundwater systems wihin the Pasco Basin that are significant to understanding waste isolation. The effort is directed toward characterizing the areal and vertical distributions of hydraulic head, hydraulic properties, and hydrochemistry. Data obtained from these studies provide input for numerical modeling of groundwater flow and solute transport. These models are then used for evaluating potential waste migration as a function of space and time. The groundwater system beneath the Hanford Site and surrounding area consists of a thick, accordantly layered sequence of basalt flows and associated sedimentary interbed that primarily occur in the upper part of the Columbia River basalt. Permeable horizons of the sequence are associated with the interbeds and the interflow zones within the basalt. The columnar interiors of a flow act as low-permeability aquitards, separating the more-permeable interflows or interbeds. This paper discusses the hydrologic field-gathering activities, specifically, field-testing methodology and test results from deep basalt boreholes.

Strait, S R; Spane, F A; Jackson, R L; Pidcoe, W W

1982-05-01T23:59:59.000Z

25

SECONDARY MINERALS FOUND IN CORES DC2 Al AND DC2 TAKEN FROM THE GRANDE RONDE BASALT FORMATION, PASCO BASIN, WASHINGTON  

E-Print Network [OSTI]

Fiscal Year 1980 for Rockwell Hanford Operations of Rockwell1. Ames, L. L. , 1976. Hanford basalt flow mineralogy.report to the Rockwell Hanford Operations Office of North

Teague, L.S.

2010-01-01T23:59:59.000Z

26

BSCSP Basalt Pilot Phase II Factsheet 2009  

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

Basalt Sequestration Pilot Test 1 Basalt Sequestration Pilot Test 1 FACTSHEET FOR PARTNERSHIP FIELD VALIDATION TEST Partnership Name Big Sky Regional Carbon Partnership Contacts: DOE/NETL Project Mgr. Name Organization E-Mail William Aljoe NETL William.Aljoe@netl.doe.gov Principal Investigator Lee Spangler Field Test Information: Field Test Name Basalt Sequestration Pilot Test Test Location Near Wallula township in Eastern Washington State Amount and Source of CO 2 Tons Source 1000 Refinery Field Test Partners (Primary Sponsors) Boise White Paper L.L.C., Shell Exploration and Production Company, Port of Walla Walla,

27

Post-eruptive alteration of silicic ignimbrites and lavas, Gran Canaria, Canary Islands: Strontium, neodymium, lead, and oxygen isotopic evidence  

SciTech Connect (OSTI)

Isotopic analyses of Miocene comenditic, pantelleritic, and trachyphonolitic ignimbrites and lavas from Gran Canaria, Canary Islands, provide evidence for posteruptive mobility of Rb, Sr, and O. Calculated initial [sup 87]Sr/[sup 86]Sr ratios in whole-rock samples from basaltic lavas and feldspar mineral separates from ignimbrites define a magmatic trend in the stratigraphic section, from ratios of 0.70340 at the base of the Mogan Formation to 0.70305 in the lower Fataga Formation. However, calculated apparent initial [sup 87]Sr/[sup 86]Sr ratios in hydrated vitrophyre and devitrified matrix separates range from 0.7035 to 0.7090. [delta][sup 18]O ratios in basalts and feldspars vary little, from +5.7 to +6.1, yet range from +6.5 to +15.0 in the ignimbrite matrices. In contrast to the Sr and O isotope ratios, Pb and Nd isotope ratios are identical within analytical error in feldspars and their silicic ignimbrite matrices. Sequential leaching experiments and the oxygen data suggest that low-temperature, posteruptive interaction with meteoric water, perhaps containing a small seawater component, has modified Rb and Sr concentrations in the matrices, such that calculated apparent initial [sup 87]Sr/[sup 86]Sr ratios are not those of the magmas when they were erupted. Mobilization of Rb and Sr must occur significantly after eurption. Nd and Pb isotope systems appear to be unaffected by this process. Therefore, [sup 87]Sr/[sup 86]Sr ratios determined by whole rock analysis of silicic rocks from hotspot-type oceanic islands are suspect and should not be incorporated into mantle tracer studies, although analysis of phenocrysts may produce useful data. 40 refs., 5 figs., 3 tabs.

Cousens, B.L. (Universite de Montreal, Quebec (Canada)); Spera, F.J. (Univ. of California, Santa Barbara (United States)); Dobson, P.F. (Unocal Corp., Brea, CA (United States))

1993-02-01T23:59:59.000Z

28

Lithoautotrophic Microbial Ecosystems in Deep Basalt Aquifers  

Science Journals Connector (OSTI)

...Microcosms containing only crushed basalt and ground water supported microbial growth. These results suggest that...RESULT OF DRILLING WITHIN THE SATURATED ZONE , GROUND WATER MONITORING AND REMEDIATION 14 , 140 ( 1994 ). • BOSTON P.J. , ON THE...

Todd O. Stevens; James P. McKinley

1995-10-20T23:59:59.000Z

29

CO2 Sequestration in Basalt Formations  

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

CO CO 2 SequeStratiOn in BaSalt FOrmatiOnS Background There is growing concern that buildup of greenhouse gases, especially carbon dioxide (CO 2 ), in the atmosphere is contributing to global climate change. One option for mitigating this effect is to sequester CO 2 in geologic formations. Numerous site assessments for geologic sequestration of CO 2 have been conducted in virtually every region of the United States. For the most part, these studies have involved storing CO 2 in saline formation, deep coal seams, and depleted oil and gas reservoirs. Another option, however, is basalt formations. Basalt is a dark-colored, silica-rich, volcanic rock that contains cations-such as calcium, magnesium, and iron-that can combine with CO 2 to form carbonate minerals. Basalt formations have not received much

30

Hydrochemistry and hydrogeologic conditions within the Hanford Site upper basalt confined aquifer system  

SciTech Connect (OSTI)

As part of the Hanford Site Ground-Water Surveillance Project, Flow System Characterization Task. Pacific Northwest Laboratory examines the potential for offsite migration of contamination within the upper basalt confined aquifer system for the US Department of Energy (DOE). As part of this activity, groundwater samples were collected over the past 2 years from selected wells completed in the upper Saddle Mountains Basalt. The hydrochemical and isotopic information obtained from these groundwater samples provides hydrologic information concerning the aquifer-flow system. Ideally, when combined with other hydrologic property information, hydrochemical and isotopic data can be used to evaluate the origin and source of groundwater, areal groundwater-flow patterns, residence and groundwater travel time, rock/groundwater reactions, and aquifer intercommunication for the upper basalt confined aquifer system. This report presents the first comprehensive Hanford Site-wide summary of hydrochemical properties for the upper basalt confined aquifer system. This report provides the hydrogeologic characteristics (Section 2.0) and hydrochemical properties (Section 3.0) for groundwater within this system. A detailed description of the range of the identified hydrochemical parameter subgroups for groundwater in the upper basalt confined aquifer system is also presented in Section 3.0. Evidence that is indicative of aquifer contamination/aquifer intercommunication and an assessment of the potential for offsite migration of contaminants in groundwater within the upper basalt aquifer is provided in Section 4.0. The references cited throughout the report are given in Section 5.0. Tables that summarize groundwater sample analysis results for individual test interval/well sites are included in the Appendix.

Spane, F.A. Jr.; Webber, W.D.

1995-09-01T23:59:59.000Z

31

Summary and evaluation of hydraulic property data available for the Hanford Site upper basalt confined aquifer system  

SciTech Connect (OSTI)

Pacific Northwest Laboratory, as part of the Hanford Site Ground-Water Surveillance Project, examines the potential for offsite migration of contamination within the upper basalt confined aquifer system. For the past 40 years, hydrologic testing of the upper basalt confined aquifer has been conducted by a number of Hanford Site programs. Hydraulic property estimates are important for evaluating aquifer flow characteristics (i.e., ground-water flow patterns, flow velocity, transport travel time). Presented are the first comprehensive Hanford Site-wide summary of hydraulic properties for the upper basalt confined aquifer system (i.e., the upper Saddle Mountains Basalt). Available hydrologic test data were reevaluated using recently developed diagnostic test analysis methods. A comparison of calculated transmissivity estimates indicates that, for most test results, a general correspondence within a factor of two between reanalysis and previously reported test values was obtained. For a majority of the tests, previously reported values are greater than reanalysis estimates. This overestimation is attributed to a number of factors, including, in many cases, a misapplication of nonleaky confined aquifer analysis methods in previous analysis reports to tests that exhibit leaky confined aquifer response behavior. Results of the test analyses indicate a similar range for transmissivity values for the various hydro-geologic units making up the upper basalt confined aquifer. Approximately 90% of the calculated transmissivity values for upper basalt confined aquifer hydrogeologic units occur within the range of 10{sup 0} to 10{sup 2} m{sup 2}/d, with 65% of the calculated estimate values occurring between 10{sup 1} to 10{sup 2} m{sup 2}d. These summary findings are consistent with the general range of values previously reported for basalt interflow contact zones and sedimentary interbeds within the Saddle Mountains Basalt.

Spane, F.A. Jr.; Vermeul, V.R.

1994-09-01T23:59:59.000Z

32

Lava Hot Springs Space Heating Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Space Heating Low Temperature Geothermal Facility Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Lava Hot Springs Space Heating Low Temperature Geothermal Facility Facility Lava Hot Springs Sector Geothermal energy Type Space Heating Location Lava Hot Springs, Idaho Coordinates 42.6193625°, -112.0110712° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

33

Combined U-Th/He and 40Ar/39Ar geochronology of post-shield lavas from the Mauna Kea and Kohala volcanoes, Hawaii  

SciTech Connect (OSTI)

Late Quaternary, post-shield lavas from the Mauna Kea and Kohala volcanoes on the Big Island of Hawaii have been dated using the {sup 40}Ar/{sup 39}Ar and U-Th/He methods. The objective of the study is to compare the recently demonstrated U-Th/He age method, which uses basaltic olivine phenocrysts, with {sup 40}Ar/{sup 39}Ar ages measured on groundmass from the same samples. As a corollary, the age data also increase the precision of the chronology of volcanism on the Big Island. For the U-Th/He ages, U, Th and He concentrations and isotopes were measured to account for U-series disequilibrium and initial He. Single analyses U-Th/He ages for Hamakua lavas from Mauna Kea are 87 {+-} 40 ka to 119 {+-} 23 ka (2{sigma} uncertainties), which are in general equal to or younger than {sup 40}Ar/{sup 39}Ar ages. Basalt from the Polulu sequence on Kohala gives a U-Th/He age of 354 {+-} 54 ka and a {sup 40}Ar/{sup 39}Ar age of 450 {+-} 40 ka. All of the U-Th/He ages, and all but one spurious {sup 40}Ar/{sup 39}Ar ages conform to the previously proposed stratigraphy and published {sup 14}C and K-Ar ages. The ages also compare favorably to U-Th whole rock-olivine ages calculated from {sup 238}U - {sup 230}Th disequilibria. The U-Th/He and {sup 40}Ar/{sup 39}Ar results agree best where there is a relatively large amount of radiogenic {sup 40}Ar (>10%), and where the {sup 40}Ar/{sup 36}Ar intercept calculated from the Ar isochron diagram is close to the atmospheric value. In two cases, it is not clear why U-Th/He and {sup 40}Ar/{sup 39}Ar ages do not agree within uncertainty. U-Th/He and {sup 40}Ar/{sup 39}Ar results diverge the most on a low-K transitional tholeiitic basalt with abundant olivine. For the most alkalic basalts with negligible olivine phenocrysts, U-Th/He ages were unattainable while {sup 40}Ar/{sup 39}Ar results provide good precision even on ages as low as 19 {+-} 4 ka. Hence, the strengths and weaknesses of the U-Th/He and {sup 40}Ar/{sup 39}Ar methods are complimentary for basalts with ages of order 100-500 ka.

Aciego, S.M.; Jourdan, F.; DePaolo, D.J.; Kennedy, B.M.; Renne, P.R.; Sims, K.W.W.

2009-10-01T23:59:59.000Z

34

Geology of the Wallula Gap Area, Washington. [Grande Ronde, Wanapum, and Saddle Mountains basalts  

SciTech Connect (OSTI)

This study focuses on the structure and stratigraphy of an 80-km/sup 2/ area at the southern margin of the Pasco Basin in Wallula Gap. Field stratigraphy, petrography, natural remanent magnetism, and major-element chemistry indicate that the tholeiitic basalt flows of the Wallula Gap area correlate with units of the Grande Ronde, Wanapum, and Saddle Mountains Formations of the Yakima Subgroup of the Columbia River Basalt Group. Flows of the Frenchman Springs, Umatilla, Pomona, Elephant Mountain, and Ice Harbor Mmebers are present in the area. The Frenchman Springs Member exposed in the Wallula Gap is more than 185 m thick and consists of eight to nine flows. Its thickness and possible contemporaneous structural deformation apparently prevented emplacement of both the Roza and Priest Rapids Members at this locality. Structural uplift of the Horse Heaven Hills began prior to extrusion of the Pomona flow. Both the Pomona and Elephant Mountain Members thin and pinch out over the crest of the uplift near Mound Pond. The Ice Harbor flow was apparently confined to the basin north of the Horse Heaven uplift, but an exposure at Mound Pond suggests it flowed through Wallula Gap as an intracanyon flow. The Wallula Gap fault zone trends N65/sup 0/W and can be traced for at least 11 km along the north flank of the Horse Heaven Hills uplift. Where the fault intersects the Olympic-Wallowa Lineament at Van Sycle Canyon 8 km east of Wallula Gap, it is a broad zone of normal faulting, 300 m wide, with as much as 310 m of displacement of the basalt stratigraphy. Two faults occur in the northern portion of Van Sycle Canyon and define a graben trending N45/sup 0/W. A third fault, roughly parallel to the Wallula Gap fault, transects the The Nub and offsets 14 m of Ice Harbor basalt.

Gardner, J.N.; Snow, M.G.; Fecht, K.R.

1981-12-01T23:59:59.000Z

35

THERMAL PROPERTIES OF GABLE MOUNTAIN BASALT CORES HANFORD NUCLEAR RESERVATION  

E-Print Network [OSTI]

1974. 7. Atlantic Richfield Hanford Company, Research andGABLE MOUNTAIN BASALT CORES HANFORD NUCLEAR RESERVATION L.

Martinez-Baez, L.F.

2011-01-01T23:59:59.000Z

36

Distinctive upper mantle anisotropy beneath the High Lava Plains and Eastern Snake River Plain,  

E-Print Network [OSTI]

Distinctive upper mantle anisotropy beneath the High Lava Plains and Eastern Snake River Plain and continuing with the still- ongoing volcanism in the High Lava Plains (HLP) and eastern Snake River Plain (SRP waves; shear wave splitting; high lava plains; Snake River Plain; Yellowstone. Index Terms: 8137

37

Upper Basalt-Confined Aquifer System in the Southern Hanford Site  

SciTech Connect (OSTI)

The 1990 DOE Tiger Team Finding GW/CF-202 found that the hydrogeologic regime at the Hanford Site was inadequately characterized. This finding also identified the need for completing a study of the confined aquifer in the central and southern portions of the Hanford Site. The southern portion of the site is of particular interest because hydraulic-head patterns in the upper basalt-confined aquifer system indicate that groundwater from the Hanford central plateau area, where contaminants have been found in the aquifer, flows southeast toward the southern site boundary. This results in a potential for offsite migration of contaminants through the upper basalt-confined aquifer system. Based on the review presented in this report, available hydrogeologic characterization information for the upper basalt-confined aquifer system in this area is considered adequate to close the action item. Recently drilled offsite wells have provided additional information on the structure of the aquifer system in and near the southern part of the Hanford Site. Information on hydraulic properties, hydrochemistry, hydraulic heads and flow directions for the upper basalt-confined aquifer system has been re-examined and compiled in recent reports including Spane and Raymond (1993), Spane and Vermeul ( 1994), and Spane and Webber (1995).

Thorne, P.

1999-01-04T23:59:59.000Z

38

Basalt, Colorado: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Basalt, Colorado: Energy Resources Basalt, Colorado: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.3688731°, -107.0328241° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.3688731,"lon":-107.0328241,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

39

Origin of two differentiation trends in the Emeishan flood basalts  

Science Journals Connector (OSTI)

Both the Bowen and Fenner differentiation trends have been recognized in the ... , the lavas from Guizhou evolved along the Fenner trend leading to the magmas with high...2O3 (23%) and low SiO2 (44%) contents. Th...

Yigang Xu; Houjun Mei; Jifeng Xu; Xiaolong Huang; Yuejun Wang…

2003-02-01T23:59:59.000Z

40

E-Print Network 3.0 - anfengshan basalts subducted Sample Search...  

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

et al., 2003) Meta-stable basalt... ? basalt white eclogite (van Hunen & van den Berg, 2008) viscosity For low Tmantle subduction looks like... The dynamics of ... Source:...

Note: This page contains sample records for the topic "basaltic lava flows" 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

Pulsatory magma supply to a phonolite lava lake Clive Oppenheimer a,  

E-Print Network [OSTI]

Pulsatory magma supply to a phonolite lava lake Clive Oppenheimer a, , Alexandra S. Lomakina b processes (Tazieff, 1997; Oppenheimer et al., 2004). The decadal persistence of some lava lakes, with no net, though it may well have existed for a century or more (Oppenheimer and Kyle, 2008). Since 2001, the lake

Kingsbury, Nick

42

Peak discharge of a Pleistocene lava-dam outburst flood in Grand Canyon, Arizona, USA  

E-Print Network [OSTI]

produced the largest known flood on the Colorado River in Grand Canyon. The Hyaloclastite Dam was up to 366 Canyon; Colorado river; Pleistocene floods; Lava dams; Hydraulic modeling; Paleoflood indicators; DamPeak discharge of a Pleistocene lava-dam outburst flood in Grand Canyon, Arizona, USA Cassandra R

43

Hands On Science with NOAA TITLE: Plate Tectonics and Lava Lamps  

E-Print Network [OSTI]

and geological events?" Answer = heat from radioactive decay · Compare the light bulb in lava to Earth's internal in the lava lamp. · Plot recent earthquakes and volcanic activity on a world map and compare to the location.education.noaa.gov/Ocean_and_Coasts/Ocean_Floor_Features.html USGS Earthquake Hazards - http

44

Lava Hot Springs Pool & Spa Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Lava Hot Springs Pool & Spa Low Temperature Geothermal Facility Lava Hot Springs Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Lava Hot Springs Pool & Spa Low Temperature Geothermal Facility Facility Lava Hot Springs Sector Geothermal energy Type Pool and Spa Location Lava Hot Springs, Idaho Coordinates 42.6193625°, -112.0110712° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

45

Modeling the reactive inorganic solute distributions in the groundwater flow systems of the Hanford Site using inverse analytical modeling techniques.  

E-Print Network [OSTI]

??Inverse analytical techniques were used to model solute distributions and determine transport parameters for two flow systems in the Yakima Basalt subgroup at the Hanford… (more)

Adamski, Mark Robert

2012-01-01T23:59:59.000Z

46

Microsoft Word - Basalt Pilot Phase II Fact Sheet FY08  

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

16.0 Basalt Pilot 1 16.0 Basalt Pilot 1 FACTSHEET FOR PARTNERSHIP FIELD VALIDATION TEST Partnership Name Big Sky Regional Carbon Partnership Contacts: DOE/NETL Project Mgr. Name Organization E-Mail David Lang NETL LANG@netl.doe.gov Principal Investigator Lee Spangler Field Test Information: Basalt Sequestration Pilot Test Test Location Near Wallula township in Eastern Washington State Amount and Source of CO 2 Tons Source 3000 Refinery Field Test Partners (Primary Sponsors) Pacific Northwest National Lab - Pacific Northwest Division, Idaho

47

Basaltic volcanic episodes of the Yucca Mountain region  

SciTech Connect (OSTI)

The purpose of this paper is to summarize briefly the distribution and geologic characteristics of basaltic volcanism in the Yucca Mountain region during the last 10--12 Ma. This interval largely postdates the major period of silicic volcanism and coincides with and postdates the timing of major extensional faulting in the region. Field and geochronologic data for the basaltic rocks define two distinct episodes. The patterns in the volume and spatial distribution of these basaltic volcanic episodes in the central and southern part of the SNVF are used as a basis for forecasting potential future volcanic activity in vicinity of Yucca Mountain. 33 refs., 2 figs.

Crowe, B.M.

1990-03-01T23:59:59.000Z

48

The SNC meteorites: basaltic igneous processes on Mars  

Science Journals Connector (OSTI)

...Basaltic rocks at the Meridiani and Gusev MER landing sites on Mars. Meteoritics and Planetary...origin of rocks at the Mars Pathfinder landing site. Journal of Geophysical Research...Geochemistry, Volume 1, Meteorites, Comets, and Planets. Elsevier-Pergamon...

J.C. Bridges; P.H. Warren

49

Harnessing Sun, Wind and Lava for Islands' Energy Needs | Department of  

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

Harnessing Sun, Wind and Lava for Islands' Energy Needs Harnessing Sun, Wind and Lava for Islands' Energy Needs Harnessing Sun, Wind and Lava for Islands' Energy Needs November 3, 2010 - 10:56am Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs Last month, the Energy Blog featured a read out of Assistant Secretary Patricia Hoffman's trip to Honolulu and the Hawaii Clean Energy Initiative (HCEI). Bolstered by HCEI, Hawaii is harnessing its indigenous sources of energy to achieve 70 percent clean energy usage by 2030. Islands across the world are similarly positioned to address their unique energy challenges with endemic resources: sun, wind, waves and lava. Cue in the Energy Development in Island Nations (EDIN) project - this international collaboration between the United States, Iceland and New

50

Development of the Long Valley, California, magma chamber recorded in precaldera rhyolite lavas of Glass Mountain  

Science Journals Connector (OSTI)

Glass Mountain, California, consists of >50 km3...of high-silica rhyolite lavas and associated pyroclastic deposits that erupted over a period of >1 my preceding explosive eruption of the Bishop Tuff and formatio...

J. M. Metz; G. A. Mahood

51

Simulating Geologic Co-sequestration of Carbon Dioxide and Hydrogen Sulfide in a Basalt Formation  

SciTech Connect (OSTI)

Co-sequestered CO2 with H2S impurities could affect geologic storage, causing changes in pH and oxidation state that affect mineral dissolution and precipitation reactions and the mobility of metals present in the reservoir rocks. We have developed a variable component, non-isothermal simulator, STOMP-COMP (Water, Multiple Components, Salt and Energy), which simulates multiphase flow gas mixtures in deep saline reservoirs, and the resulting reactions with reservoir minerals. We use this simulator to model the co-injection of CO2 and H2S into brecciated basalt flow top. A 1000 metric ton injection of these supercritical fluids, with 99% CO2 and 1% H2S, is sequestered rapidly by solubility and mineral trapping. CO2 is trapped mainly as calcite within a few decades and H2S is trapped as pyrite within several years.

Bacon, Diana H.; Ramanathan, Ramya; Schaef, Herbert T.; McGrail, B. Peter

2014-01-15T23:59:59.000Z

52

Type F: Oceanic-ridge, Basaltic Resource | 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 Page Edit History Facebook icon Twitter icon » Type F: Oceanic-ridge, Basaltic Resource Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Type F: Oceanic-ridge, Basaltic Resource Dictionary.png Type F: Oceanic-ridge, Basaltic Resource: No definition has been provided for this term. Add a Definition Brophy Occurrence Models This classification scheme was developed by Brophy, as reported in Updating the Classification of Geothermal Resources.[1] Type A: Magma-heated, Dry Steam Resource Type B: Andesitic Volcanic Resource Type C: Caldera Resource Type D: Sedimentary-hosted, Volcanic-related Resource Type E: Extensional Tectonic, Fault-Controlled Resource

53

Mineralization of Basalts in the CO2-H2O-H2S System. | EMSL  

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

H2S System. Mineralization of Basalts in the CO2-H2O-H2S System. Abstract: Basalt samples representing five different formations were immersed in water equilibrated with...

54

Sedimentary signatures of the entrance of coarse-grained volcaniclastic flows into the sea: the example of the breccia units of the Las Palmas Detritic Formation (Mio–Pliocene, Gran Canaria, Eastern Atlantic, Spain)  

Science Journals Connector (OSTI)

The transformations of volcaniclastic gravity flows entering the sea remain poorly understood. They are recorded by sedimentary signatures in the volcaniclastic sedimentation of the Mio–Pliocene Las Palmas Detritic Formation (LPDF) of the volcanic island of Gran Canaria. These gravity flows are contemporaneous with an erosive period on the island succeeding the emplacement of the Fataga Volcanic Group, and the beginning of the evolution of the Roque Nublo stratovolcano. The sedimentary section that crops out at the mouth of a paleobarranco at Las Cuevas del Guincho comprises subtidal calcareous and clastic sediments affected by wave and storm action (Units 1 and 3), beach gravels (Unit 4), volcaniclastic deposits represented by reworked phonolitic pyroclastic deposits (Unit 1), breccia deposits that contain juvenile and phonolitic gravels and blocks mainly incorporated at the shoreline (Unit 2), and a debris avalanche deposit at the top (Unit 5). The breccia deposits display a reversely graded base which disappears distally as a result of seawater incorporation and liquidization of the volcaniclastic mass and mixing with marine sediment. This breccia unit is interpreted as having been emplaced by a granular mass flow after transformation of a block and ash flow deposit that entered the sea. In the debris avalanche deposits, thermal quenching of juvenile basaltic lava clasts and large inclined clastic intrusions of underlying marine sediments suggest that the debris avalanche entered the sea. Rapid subaqueous emplacement of the granular mass flow and of the debris avalanche deformed the sedimentary substratum. Water incorporation reduced the influence of the volcaniclastic flows on the substratum. AMS data confirm the effect of water ingestion and correlative loss of cohesion and allow also reconstruction of paleoflow directions that were normal to the paleoshoreline of the northern coast of Gran Canaria. All these volcaniclastic gravity flow deposits and their textural characteristics are particularly useful in the reconstruction of processes that occur at the subaerial–submarine transition and for the location of ancient shorelines.

Jean-Luc Schneider; Francisco J. Pérez Torrado; Domingo Gimeno Torrente; Patrick Wassmer; María del Carmen Cabrera Santana; Juan Carlos Carracedo

2004-01-01T23:59:59.000Z

55

Continental ood basalts: episodic magmatism above long-lived hotspots  

E-Print Network [OSTI]

November 1999 Abstract The eruption of continental flood basalt (CFB) may reflect episodic magmatism above long-lived mantle plumes. The Iceland and Yellowstone hotspots have generated successive CFB provinces in subducting oceanic lithosphere led to subsequent breakthrough and eruption of CFB. Since both mantle plume

Johnston, Stephen T.

56

TESTING MODELS FOR BASALTIC VOLCANISM: IMPLICATIONS FOR YUCCA MOUNTAIN, NEVADA  

E-Print Network [OSTI]

TESTING MODELS FOR BASALTIC VOLCANISM: IMPLICATIONS FOR YUCCA MOUNTAIN, NEVADA Eugene Smith 1 The determination of volcanic risk to the proposed high- level nuclear waste repository at Yucca Mountain requires, then volcanism in the future may not be a significant threat to Yucca Mountain. On the other hand, if melting

Conrad, Clint

57

2/02 NASA JSC Destination: Mars 17 Making and Mapping  

E-Print Network [OSTI]

. Background Volcanoes and/or lava flows are prominent features on all large rocky planetary bodies. Even some: Mars 2/02 NASA JSC In addition to shield volcanoes,there are dark, flat layers of basaltic lava flows flat work area with newspaper to protect from spills. Classroom Pr

58

Olivine from planetary basalts: Chemical signatures that indicate planetary parentage and those that record igneous setting and process  

Science Journals Connector (OSTI)

...basaltic volcanism Apollo 11, 12, 15 17 landing sites. 10020, 10062 AP11 Low-K basalts...upcoming sampling return mis-sions to comets, asteroids, and Mars, where current...Papike et al. 1976 basaltic volcanism & 17 landing sites. Low-K basalts; 12009, 12020...

Jim Karner; JJ. Papike; C.K. Shearer

59

Evaporation of Lava and its Condensation from the Vapour Phase in Terrestrial and Lunar Volcanism  

Science Journals Connector (OSTI)

... appearance to the clouds of white steam from erupting geysers and from heated pools in geothermal areas. The resemblance between the steam clouds and the volcanic clouds is so pronounced ... is little doubt that they are formed by a similar mechanism. It appears that the hot lava has a high enough vapour pressure for appreciable quantities of it to evaporate. ...

BERNARD VONNEGUT; ROBERT K. MCCONNELL; RONALD V. ALLEN

1966-01-29T23:59:59.000Z

60

on marsGraduate student discovers new form of lava flow on Mars  

E-Print Network [OSTI]

astronomical event so don't miss it. Meet at Tempe Town Lake. Flying on The VomiT ComeT The Dust Devils Hapke2012.pdf Mapping the apollo 17 landing site area based on lunar reconnaissance orbiter caMera i

Rhoads, James

Note: This page contains sample records for the topic "basaltic lava flows" 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

Evidence from lava flows for complex polarity transitions: the new composite Steens Mountain reversal record  

Science Journals Connector (OSTI)

......Catlow 13 (C13). PN Group 3 (PN3) is placed between...clustering, PN7 and PN8 fall after S31 before the...Catlow paths. The next groups from Poker Jim North...Cascade Range and the Klamath Mountains, Geology...1995. Combining groups of paleomagnetic directions......

Nicholas A. Jarboe; Robert S. Coe; Jonathan M.G. Glen

2011-08-01T23:59:59.000Z

62

Evidence from lava flows for complex polarity transitions: the new composite Steens Mountain reversal record  

Science Journals Connector (OSTI)

......2004), which could be run for long enough to encompass...driven by a hand-held gasoline powered drill. The cores...temperature curves, run in argon atmosphere...ChRM was determined with straight-line fits anchored...directions determined from straight-line fits to demagnetization......

Nicholas A. Jarboe; Robert S. Coe; Jonathan M.G. Glen

2011-08-01T23:59:59.000Z

63

Interim reclamation report, Basalt Waste Isolation project: Boreholes, 1989  

SciTech Connect (OSTI)

In 1968, a program was started to assess the feasibility of storing Hanford Site defense waste in deep caverns constructed in basalt. This program was expanded in 1976 to include investigations of the Hanford Site as a potential location for a mined commercial nuclear waste repository. An extensive site characterization program was begun to determine the feasibility of using the basalts beneath the Hanford Site for the repository. Site research focused primarily on determining the direction and speed of groundwater movement, the uniformity of basalt layers, and tectonic stability. Some 98 boreholes were sited, drilled, deepened, or modified by BWIP between 1977 and 1988 to test the geologic properties of the Site. On December 22, 1987, President Reagan signed into law the Nuclear Waste Policy Amendments Act of 1987, which effectively stopped all repository-related activities except reclamation of disturbed lands at the Hanford Site. This report describes the development of the reclamation program for the BWIP boreholes, its implementation, and preliminary estimates of its success. The goal of the reclamation program is to return sites disturbed by the repository program as nearly as practicable to their original conditions using native plant species. 48 refs., 28 figs., 14 tabs.

Brandt, C.A.; Rickard, W.H. Jr.; Hefty, M.G.

1990-03-01T23:59:59.000Z

64

Transient Inverse Calibration of Site-Wide Groundwater Model to Hanford Operational Impacts from 1943 to 1996--Alternative Conceptual Model Considering Interaction with Uppermost Basalt Confined Aquifer  

SciTech Connect (OSTI)

The baseline three-dimensional transient inverse model for the estimation of site-wide scale flow parameters, including their uncertainties, using data on the transient behavior of the unconfined aquifer system over the entire historical period of Hanford operations, has been modified to account for the effects of basalt intercommunication between the Hanford unconfined aquifer and the underlying upper basalt confined aquifer. Both the baseline and alternative conceptual models (ACM-1) considered only the groundwater flow component and corresponding observational data in the 3-Dl transient inverse calibration efforts. Subsequent efforts will examine both groundwater flow and transport. Comparisons of goodness of fit measures and parameter estimation results for the ACM-1 transient inverse calibrated model with those from previous site-wide groundwater modeling efforts illustrate that the new 3-D transient inverse model approach will strengthen the technical defensibility of the final model(s) and provide the ability to incorporate uncertainty in predictions related to both conceptual model and parameter uncertainty. These results, however, indicate that additional improvements are required to the conceptual model framework. An investigation was initiated at the end of this basalt inverse modeling effort to determine whether facies-based zonation would improve specific yield parameter estimation results (ACM-2). A description of the justification and methodology to develop this zonation is discussed.

Vermeul, Vincent R.; Cole, Charles R.; Bergeron, Marcel P.; Thorne, Paul D.; Wurstner, Signe K.

2001-08-29T23:59:59.000Z

65

Engineered barrier development for a nuclear waste repository in basalt: an integration of current knowledge  

SciTech Connect (OSTI)

This document represents a compilation of data and interpretive studies conducted as part of the engineered barriers program of the Basalt Waste Isolation Project. The overall objective of these studies is to provide information on barrier system designs, emplacement and isolation techniques, and chemical reactions expected in a nuclear waste repository located in the basalts underlying the Hanford Site within the state of Washington. Backfills, waste-basalt interactions, sorption, borehole plugging, etc., are among the topics discussed.

Smith, M.J.

1980-05-01T23:59:59.000Z

66

doi:10.1016/j.gca.2005.02.002 Sulfur diffusion in basaltic melts  

E-Print Network [OSTI]

doi:10.1016/j.gca.2005.02.002 Sulfur diffusion in basaltic melts CARMELA FREDA,1, * DON R. BAKER,1,2 February 3, 2005) Abstract--We measured the diffusion coefficients of sulfur in two different basaltic for sulfur diffusion in anhydrous basalts: D 2.19 10 4 exp 226.3 58.3 RT where D is the diffusion coefficient

Long, Bernard

67

Final Reclamation Report: Basalt Waste Isolation Project exploratory shaft site  

SciTech Connect (OSTI)

The restoration of areas disturbed by activities of the Basalt Waste Isolation Project (BWIP) constitutes a unique operation at the US Department of Energy's (DOE) Hanford Site, both from the standpoint of restoration objectives and the time frame for accomplishing these objectives. The BWIP reclamation program comprises three separate projects: borehole reclamation, Near Surface Test Facility (NSTF) reclamation, and Exploratory Shaft Facility (ESF) reclamation. The main focus of this report is on determining the success of the revegetation effort 1 year after work was completed. This report also provides a brief overview of the ESF reclamation program. 21 refs., 7 figs., 14 tabs.

Brandt, C.A.; Rickard, W.H. Jr.

1990-06-01T23:59:59.000Z

68

Effects of Biochar and Basalt Additions on Carbon Sequestration and Fluxes of Greenhouse Gases in Soils  

E-Print Network [OSTI]

Effects of Biochar and Basalt Additions on Carbon Sequestration and Fluxes of Greenhouse Gases Emissions--Carbon Dioxide Emissions--Sequestration and Storage--Biochar--Basalt--Organic Fertilizers, this investigation focuses on the range of potential of different soil additives to enhance sequestration and storage

Vallino, Joseph J.

69

Palaeomagnetism and K—Ar Ages of Cenozoic Basalts from Argentina  

Science Journals Connector (OSTI)

......Cenozoic Basalts from Argentina D. A. Valencio...Argentine Atomic Energy Commission School...Investigations of Argentina for financial support...Argentine Atomic Energy Commission and the...Argentine Atomic Energy Commission. University...Cenozoic basalts from Argentina 161 Cox, A......

D. A. Valencio; E. Linares; K. M. Creer

1970-02-01T23:59:59.000Z

70

Mineral Chemistry of Basalts Recovered from Hotspot Snake River Scientific Drilling Project, Idaho: Source and Crystallization Characteristics  

E-Print Network [OSTI]

Mineral Chemistry of Basalts Recovered from Hotspot Snake River Scientific Drilling Project, Idaho recovered by Hotspot: Snake River Scientific Drilling Project, Idaho establish crystallization conditions;ABSTRACT Mineral Chemistry of Basalts Recovered from Hotspot: Snake River Scientific Drilling Project

Seamons, Kent E.

71

Evolved mare basalt magmatism, high Mg/Fe feldspathic crust, chondritic impactors, and the petrogenesis of Antarctic  

E-Print Network [OSTI]

. The basalt clasts in MET 01210 have undergone `Fenner' trend enrichments in iron and may also have witnessed

72

Rare Earth Element sorption by basaltic rock: experimental data and modeling results using the "Generalised Composite approach".  

E-Print Network [OSTI]

Rare Earth Element sorption by basaltic rock: experimental data and modeling results using Email address : emmanuel.tertre@univ-poitiers.fr Keywords: sorption, lanthanides, basalt, surface.1016/j.gca.2007.12.015 #12;Abstract Sorption of the 14 Rare Earth Elements (REE) by basaltic rock

Paris-Sud XI, Université de

73

Interim reclamation report: Basalt Waste Isolation Project exploration shaft site  

SciTech Connect (OSTI)

In 1968, a program was started to assess the feasibility of storing Hanford Site defense waste in deep caverns constructed in basalt. This program was expanded in 1976 to include investigations of the Hanford Site as a potential location for a mined commercial nuclear waste repository. Extensive studies of the geotechnical aspects of the site were undertaken, including preparations for drilling a large diameter Exploratory Shaft. This report describes the development of the reclamation program for the Exploratory Shaft Facility, its implementation, and preliminary estimates of its success. The goal of the reclamation program is to return sites disturbed by the repository program as nearly as practicable to their original conditions using native plant species. 43 refs., 19 figs., 9 tabs.

Brandt, C.A.; Rickard, W.H. Jr.; Hefty, M.G.

1990-02-01T23:59:59.000Z

74

Elevation of surficial sediment/basalt contact in the Subsurface Disposal Area, Idaho National Engineering Laboratory  

SciTech Connect (OSTI)

The elevation of the surficial sediment/basalt contact at the Subsurface Disposal Area (SDA), within the Radioactive Waste Management Complex (RWMC) is presented to provide a data base for future remedial actions at this site. About 1,300 elevation data from published and unpublished reports, maps, and surveyors notes were compiled to generate maps and cross-sections of the surficial sediment/basalt contact. In general, an east to west trending depression exists in the south central portion of the SDA with basalt closer to land surface on the northern and southern boundaries of the SDA. The lowest elevation of the surficial sediment/basalt contact is 4,979 ft and the greatest is land surface at 5,012 ft. The median elevation of the sediment/basalt interface is 4,994 ft. The median depth to basalt in the SDA is 16 ft if land surface elevation is assumed to be 5,010 ft. The depth from land surface to the sediment/basalt interface ranges from 24 ft in the southeast corner of the SDA to less than 3 ft at the north-central boundary of the SDA.

Hubbell, J.M.

1993-05-13T23:59:59.000Z

75

Dismantling the deep earth : geochemical constraints from hotspot lavas for the origin and lengthscales of mantle heterogeneity  

E-Print Network [OSTI]

Chapter 1 presents the first published measurements of Sr-isotope variability in olivine-hosted melt inclusions. Melt inclusions in just two Samoan basalt hand samples exhibit most of the total Sr-isotope variability ...

Jackson, Matthew G. (Matthew Gerald)

2008-01-01T23:59:59.000Z

76

FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA  

E-Print Network [OSTI]

FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA, Petropavlovsk- Kamchatsky, Russia; belousov@mail.ru. (2) - GEOMAR, Kiel, Germany. Chikurachki is a young, active

Belousov, Alexander

77

Basalt petrogenesis beneath slow- and ultraslow-spreading Arctic mid-ocean ridges  

E-Print Network [OSTI]

To explore the ability of melting mafic lithologies to produce alkaline ocean-island basalts (OIB), an experimental study was carried out measuring clinopyroxene (Cpx)melt and garnet (Gt)-melt partition coefficients during ...

Elkins, Lynne J

2009-01-01T23:59:59.000Z

78

Underground engineering at the Basalt Waste Isolation Project  

SciTech Connect (OSTI)

A special task group was organized by the US National Committee for Rock Mechanics and the Board on Radioactive Waste Management of the National Research Council to address issues relating to the geotechnical site characterization program for an underground facility to house high-level radioactive waste of the Basalt Waste Isolation Project (BWIP). Intended to provide an overview of the geotechnical program, the study was carried out by a task group consisting of ten members with expertise in the many disciplines required to successfully complete such a project. The task group recognized from the outset that the short time frame of this study would limit its ability to address all geotechnical issues in detail. Geotechnical issues were considered to range from specific technical aspects such as in-situ testing for rock mass permeability; rock hardness testing in the laboratory; or geologic characterizations and quantification of joints, to broader aspects of design philosophy, data collection, and treatment of uncertainty. The task group chose to focus on the broader aspects of underground design and construction, recognizing that the BWIP program utilizes a peer review group on a regular basis which reviews the specific technical questions related to geotechnical engineering. In this way, it was hoped that the review provided by the task group would complement those prepared by the BWIP peer review group.

Not Available

1987-01-01T23:59:59.000Z

79

Natural Gas Storage in Basalt Aquifers of the Columbia Basin, Pacific Northwest USA: A Guide to Site Characterization  

SciTech Connect (OSTI)

This report provides the technical background and a guide to characterizing a site for storing natural gas in the Columbia River Basalt

Reidel, Steve P.; Spane, Frank A.; Johnson, Vernon G.

2002-08-08T23:59:59.000Z

80

Development and evaluation of a thermodynamic dataset for phases of interest in CO2 mineral sequestration in basaltic rocks  

E-Print Network [OSTI]

evaluation of a thermodynamic dataset for phases of interestKeywords: Thermodynamic dataset CO2–water– basaltABSTRACT A thermodynamic dataset describing 36 mineral

Aradottir, E.S.P.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Ancient sub-seafloor alteration of basaltic andesites of the Ongeluk Formation, South Africa: implications for the chemistry of  

E-Print Network [OSTI]

Ancient sub-seafloor alteration of basaltic andesites of the Ongeluk Formation, South Africa, Auckland Park 2006, South Africa b School of Earth Sciences, University of Leeds, Woodhouse Lane, Leeds LS2¨ttingen, Germany e Medkim 2, Du Toitspan Road, Kimberley 8301, South Africa Accepted 25 June 2003 Abstract Basaltic

Banks, David

82

Investigating the reasons for the failure of palaeointensity experiments: a study on historical lava flows from Mt. Etna (Italy)  

Science Journals Connector (OSTI)

......Solid symbols are for heating, open symbols for...When observed under oil at the largest magnifications...carried out under oil. (a) Type M sample...or produced during heating. It should be nevertheless...determinations. The price for this advantage...acquired after heating of a sample to T......

Manuel Calvo; Michel Prévot; Mireille Perrin; Janna Riisager

2002-04-01T23:59:59.000Z

83

Physics of the Earth and Planetary Interiors 133 (2002) 127146 Palaeomagnetic study of Oligocene (2430 Ma) lava flows from  

E-Print Network [OSTI]

Physics of the Earth and Planetary Interiors 133 (2002) 127­146 Palaeomagnetic study of Oligocene previously obtained radiometric dates to correlate the sections [J. Petrol. 39 (4) (1998) 711; Earth Planet the composi- tion and dynamics of the Earth's core directly, one indirect method is to study the Earth

Demouchy, Sylvie

84

Page not found | Department of Energy  

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

61 - 16170 of 26,764 results. 61 - 16170 of 26,764 results. Article Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection How can a prehistoric volcanic eruption help us reduce the amount of CO2 released into the atmosphere today? The answer is found in the basalt formations created by the lava - formations that can be used as sites for injecting carbon dioxide (CO2) captured from industrial sources in a process called carbon capture and storage. The Big Sky Carbon Sequestration Partnership recently injected 1,000 metric tons of CO2 into the Grande Ronde Basalt Formation in eastern Washington. This first-of-its kind injection is part of research meant to determine if basalt formations could provide a long-term solution for storing CO2, a potent greenhouse gas. http://energy.gov/fe/articles/ancient-lava-flows-trap-co2-long-term-storage-big-sky-injection

85

Effect of aged waste package and basalt on radioelement release  

SciTech Connect (OSTI)

Results of experiments are described that combine backfill, radioactive waste, and repository host rock in a single flowing groundwater stream in a manner analogous to a hydraulic breach of a waste repository. The experimental design is used to identify the chemical interactions that would occur if repository components were breached by flowing water. The results indicate that of three parameters studied, the alteration of the repository components as might occur upon aging had the most substantial influence on the migration of radioactive elements dissolved from the solid radioactive waste. The other two parameters, the metal alloy used in the apparatus and an ionizing radiation field imposed on the experimental apparatus, had little or no measurable effect on radioactive element transport by flowing water. Inasmuch as the alteration of the repository materials represent aging in an actual repository, it is concluded that changes with age may detrimentally affect the ability of a repository to isolate plutonium and neptunium, and possibly other radioactive elements in nuclear waste. 37 references, 2 figures, 2 tables.

Seitz, M.G.; Vandegrift, G.F.; Bowers, D.L.; Gerding, T.J.

1983-01-01T23:59:59.000Z

86

Physical Constraints on Geologic CO2 Sequestration in Low-Volume Basalt Formations  

SciTech Connect (OSTI)

Deep basalt formations within large igneous provinces have been proposed as target reservoirs for carbon capture and sequestration on the basis of favorable CO2-water-rock reaction kinetics that suggest carbonate mineralization rates on the order of 102–103 d. Although these results are encouraging, there exists much uncertainty surrounding the influence of fracture-controlled reservoir heterogeneity on commercial-scale CO2 injections in basalt formations. This work investigates the physical response of a low-volume basalt reservoir to commercial-scale CO2 injections using a Monte Carlo numerical modeling experiment such that model variability is solely a function of spatially distributed reservoir heterogeneity. Fifty equally probable reservoirs are simulated using properties inferred from the deep eastern Snake River Plain aquifer in southeast Idaho, and CO2 injections are modeled within each reservoir for 20 yr at a constant mass rate of 21.6 kg s–1. Results from this work suggest that (1) formation injectivity is generally favorable, although injection pressures in excess of the fracture gradient were observed in 4% of the simulations; (2) for an extensional stress regime (as exists within the eastern Snake River Plain), shear failure is theoretically possible for optimally oriented fractures if Sh is less than or equal to 0.70SV; and (3) low-volume basalt reservoirs exhibit sufficient CO2 confinement potential over a 20 yr injection program to accommodate mineral trapping rates suggested in the literature.

Ryan M. Pollyea; Jerry P. Fairley; Robert K. Podgorney; Travis L. McLing

2014-03-01T23:59:59.000Z

87

Are oxidized shergottite-like basalts an alternative to ``andesite'' on Victoria E. Hamilton  

E-Print Network [OSTI]

Are oxidized shergottite-like basalts an alternative to ``andesite'' on Mars? Victoria E. Hamilton; 6225 Planetology: Solar System Objects: Mars. Citation: Hamilton, V. E., and M. E. Minitti meteorites [Hamilton et al., 1997]. The mineralogies of the Martian TIR spectra were inter- preted

Hamilton, Victoria E.

88

The Hadley-Apennine KREEP basalt igneous province G. Jeffrey TAYLOR1*  

E-Print Network [OSTI]

The Hadley-Apennine KREEP basalt igneous province G. Jeffrey TAYLOR1* , Linda M. V. MARTEL1 on the slope of Hadley Delta. This glass-coated block was angular and apparently recently emplaced (Spudis crater located about 300 m north of Station 2 and about one third of the way down the slope of Hadley

Spudis, Paul D.

89

Use of low frequencies for sub-basalt imaging Anton Ziolkowski,1  

E-Print Network [OSTI]

, Murchison House, West Mains Road, Edinburgh EH9 3LA, 3 Veritas DGC Limited, Crompton Way, Manor Royal Estate14 4HA, UK Received June 2002, revision accepted August 2002 ABSTRACT Many prospective passive ocean of passive ocean margins are covered by basalts, which are often opaque to conventional seismic reflection

Edinburgh, University of

90

Eruption and emplacement of a basaltic welded ignimbrite during caldera formation on Gran Canaria  

Science Journals Connector (OSTI)

The 14.1 Ma old composite ignimbrite cooling unit P1 (45 km3) on Gran Canaria comprises a lower mixed rhyolite-trachyte tuff,...3 of erupted basalt compared with only 16 km3 of the evolved P1 magmas, and the extr...

A. Freundt; H. -U. Schmincke

1995-02-01T23:59:59.000Z

91

A Miocene Island-Arc Volcanic Seamount- The Takashibiyama Formation,  

Open Energy Info (EERE)

Island-Arc Volcanic Seamount- The Takashibiyama Formation, Island-Arc Volcanic Seamount- The Takashibiyama Formation, Shimane Peninsula, Sw Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Miocene Island-Arc Volcanic Seamount- The Takashibiyama Formation, Shimane Peninsula, Sw Japan Details Activities (0) Areas (0) Regions (0) Abstract: The Miocene volcanic complex of the Takashibiyama Formation consists largely of subalkali, subaqueous basalt to andesite lavas and andesite to dacite subaqueous volcaniclastic flow deposits. Most of subaqueous lavas are moderately to intensely brecciated with rugged rough surfaces and ramp structures similar to subaerial block lava. Volcaniclastic flow deposits commonly include basalt to andesite lava fragments and/or pyroclastic materials, and are similar in internal

92

Mineralization of Basalts in the CO2-H2O-SO2-O2 System. | EMSL  

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

SO2-O2 System. Mineralization of Basalts in the CO2-H2O-SO2-O2 System. Abstract: Sequestering carbon dioxide (CO2) containing minor amounts of co-contaminants in geologic...

93

Instrumental neutron activation analysis (INAA) characterization of pre-contact basalt quarries on the American Samoan Island of Tutuila  

E-Print Network [OSTI]

This thesis presents a material-centered characterization of 120 geologic samples from four fine-grained basalt quarries on the Samoan Island of Tutuila. Previous unsuccessful attempts at definitive Tutuilan quarry differentiation have utilized x...

Johnson, Phillip Ray, II

2007-04-25T23:59:59.000Z

94

Trace element mobility during sub-seafloor alteration of basaltic glass from Ocean Drilling Program site 953 (off Gran Canaria)  

Science Journals Connector (OSTI)

Trace element concentrations of altered basaltic glass shards (layer silicates) and zeolites in volcaniclastic sediments drilled in the volcanic apron northeast of Gran Canaria during Ocean Drilling Program (ODP)...

A. Utzmann; T. Hansteen; H.-U. Schmincke

2002-08-01T23:59:59.000Z

95

Evolution of porosity and diffusivity associated with chemical weathering of a basalt clast  

SciTech Connect (OSTI)

Weathering of rocks as a result of exposure to water and the atmosphere can cause significant changes in their chemistry and porosity. In low-porosity rocks, such as basalts, changes in porosity, resulting from chemical weathering, are likely to modify the rock's effective diffusivity and permeability, affecting the rate of solute transport and thus potentially the rate of overall weathering to the extent that transport is the rate limiting step. Changes in total porosity as a result of mineral dissolution and precipitation have typically been used to calculate effective diffusion coefficients through Archie's law for reactive transport simulations of chemical weathering, but this approach fails to account for unconnected porosity that does not contribute to transport. In this study, we combine synchrotron X-ray microcomputed tomography ({mu}CT) and laboratory and numerical diffusion experiments to examine changes in both total and effective porosity and effective diffusion coefficients across a weathering interface in a weathered basalt clast from Costa Rica. The {mu}CT data indicate that below a critical value of {approx}9%, the porosity is largely unconnected in the basalt clast. The {mu}CT data were further used to construct a numerical pore network model to determine upscaled, effective diffusivities as a function of total porosity (ranging from 3 to 30%) for comparison with diffusivities determined in laboratory tracer experiments. By using effective porosity as the scaling parameter and accounting for critical porosity, a model is developed that accurately predicts continuum-scale effective diffusivities across the weathering interface of the basalt clast.

Navarre-Sitchler, A.; Steefel, C.I.; Yang, L.; Tomutsa, L.; Brantley, S.L.

2009-02-15T23:59:59.000Z

96

Analysis of thermal properties of basalt from heater Test No. 2 experiment  

SciTech Connect (OSTI)

Rockwell Hanford Operations is conducting a series of full-scale in situ tests at the Near Surface Test Facility (NSTF) near Richland, Washington as an integral part of the Basalt Waste isolation project. An objective of the Phase I tests, which include Main Heater Test No. 2, is to provide data for determination the material properties necessary for predicting the response of a repository system at depth. During the first 90 days Heater Test No. 2 represents the near-field response of a high-level waste canister which generates 1 kW of heat energy. The analysis of the thermal response of basalt from data collected during this initial heating period is described in this report. Values of thermal conductivity and heat capacity for basalt are determined using three methods referred to as type curve matching, Jacob's straight line method, and the Gauss-Newton parameter optimization method. Results indicate that the type curve and the Gauss-Newton methods give values which correspond relatively closely to those measured in the laboratory.

Huyakorn, P.; Williams, J.R.; Thomas, S. (GeoTrans, Inc., Reston, VA (USA); Applied Mechanics, Inc., Grand Junction, CO (USA); GeoTrans, Inc., Reston, VA (USA))

1981-10-04T23:59:59.000Z

97

Partitioning of light lithophile elements during basalt eruptions on Earth and application to Martian shergottites  

E-Print Network [OSTI]

/La and pressure derived from H2O-CO2 saturation (not shown); this is due to both melt 315 heterogeneity inducing variable relationships between degassing and crystallization; and to 316 the effects of post-entrapment crystallization on CO2 sequestration into a... result in a much higher Dv m than 367 observed for terrestrial basalts. The anomalies are unlikely to be due to CO2 fluxing, as 368 observed in carbon-rich systems on Earth (Métrich and Wallace, 2008), as unreasonable 369 fluxes of CO2 would...

Edmonds, Marie

2014-12-18T23:59:59.000Z

98

Quality ranking of twelve columnar basalt occurrences in the northern portion of the Paraná Basin—Brazil  

Science Journals Connector (OSTI)

This paper presents results obtained from a study of basal degrading conducted on samples of basaltic rocks found in the northern part of the Paraná Basin in the State of São Paulo, Brazil. To meet the objectives of the study, natural and accelerated alteration tests were carried out followed by a comparison of the quantitative analysis of the two alteration processes. The combined analysis of the information proved to be very useful tool for rock qualification and the quantification of alterability, thus providing a basis for comparative analysis of massive and columnar jointed basalt relative to their use as aggregate for civil construction purposes.

R.L. Gomes; J.E. Rodrigues

2007-01-01T23:59:59.000Z

99

Hydrogen Chemistry of Basalt Aquifers --Treiman et al. 282 (5397): 21... http://www.sciencemag.org/cgi/content/full/282/5397/2194e?maxtosh... 1 of 2 2/19/2008 1:26 PM  

E-Print Network [OSTI]

Hydrogen Chemistry of Basalt Aquifers -- Treiman et al. 282 (5397): 21... http. 2194 DOI: 10.1126/science.282.5397.2194e LETTERS Hydrogen Chemistry of Basalt Aquifers In their report "Evidence against hydrogen-based microbial ecosystems in basalt aquifers" (14 Aug., p. 976), Robert T

Lovley, Derek

100

Explosive basaltic volcanism of the Chikurachki Volcano (Kurile arc, Russia): Insights on pre-eruptive magmatic conditions  

E-Print Network [OSTI]

Explosive basaltic volcanism of the Chikurachki Volcano (Kurile arc, Russia): Insights on pre-Sakhalinsk, Russia d Institute of Volcanic Geology and Geochemistry, 683006 Petropavlovsk-Kamchatsky, Russia e Vernadsky Institute of Geochemistry and Analytical Chemistry, 117975 Moscow, Russia Received 13 December

Belousov, Alexander

Note: This page contains sample records for the topic "basaltic lava flows" 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

Project characteristics monitoring report: BWIP (Basalt Waste Isolation Program) repository project  

SciTech Connect (OSTI)

This monitoring report has been prepared to show compliance with provisions of the Nuclear Waste Policy Act of 1982 (NWPA) and to provide local and state government agencies with information concerning the Basalt Waste Isolation Program (BWIP). This report contains data for the time period May 26, 1986 to February 1988. The data include employment figures, salaries, project purchases, taxes and fees paid, worker survey results, and project closedown personal interview summaries. This information has become particularly important since the decision in December 1987 to stop all BWIP activities except those for site reclamation. The Nuclear Waste Policy Amendments Act of 1987 requires nonreclamation work at the Hanford Site to stop as of March 22, 1988. 7 refs., 6 figs., 28 tabs.

Friedli, E.A.; Herborn, D.I.; Taylor, C.D.; Tomlinson, K.M.

1988-03-01T23:59:59.000Z

102

Cotton flow  

E-Print Network [OSTI]

Using the conformally invariant Cotton tensor, we define a geometric flow, the "Cotton flow", which is exclusive to three dimensions. This flow tends to evolve the initial metrics into conformally flat ones, and is somewhat orthogonal to the Yamabe flow, the latter being a flow within a conformal class. We define an entropy functional, and study the flow of nine homogeneous spaces both numerically and analytically. In particular, we show that the arbitrarily deformed homogeneous 3-sphere flows into the round 3-sphere. Two of the nine homogeneous geometries, which are degenerated by the Ricci flow, are left intact by the Cotton flow.

Ali Ulas Ozgur Kisisel; Ozgur Sarioglu; Bayram Tekin

2008-06-17T23:59:59.000Z

103

Attached and Unattached Microbial Communities in a Simulated Basalt Aquifer under Fracture- and Porous-Flow Conditions  

Science Journals Connector (OSTI)

...shown are means with 1 standard deviation indicated...shown are means with 1 standard deviation indicated...studies or monitoring plans for in situ remediation...Cummings for manuscript review. REFERENCES A. Alfreider...the disposal of nuclear waste. . K. Pedersen S...

R. Michael Lehman; Frederick S. Colwell; Greg A. Bala

2001-06-01T23:59:59.000Z

104

Extraction of mid-ocean-ridge basalt from the upwelling mantle by focused flow of melt in dunite channels  

Science Journals Connector (OSTI)

... olivine, 20% opx, spinel. Cpx in these samples occurs as subhedral aggregates, as small grains associated with opx ... and perhaps cpx crystallized from migrating melt. Dunites have >95% olivine, 2-3% spinel and <1% interstitial cpx. Cpx in dunites occurs exclusively as cuspate grains along ...

Peter B. Kelemen; Nobumichi Shimizu; Vincent J. M. Salters

1995-06-29T23:59:59.000Z

105

Viscosity Problems in Igneous Rocks  

Science Journals Connector (OSTI)

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

Robert Balk

1932-01-01T23:59:59.000Z

106

Geomicrobiology of the ocean crust : the phylogenetic diversity, abundance, and distribution of microbial communities inhabiting basalt and implications for rock alteration processes  

E-Print Network [OSTI]

Basaltic ocean crust has the potential to host one of the largest endolithic communities on Earth. This portion of the biosphere, however, remains largely unexplored. In this study, we utilize molecular biological, ...

Santelli, Cara M

2007-01-01T23:59:59.000Z

107

Community interviews task report: Working draft: BWIP (Basalt Waste Isolation Project) Repository Project  

SciTech Connect (OSTI)

The socioeconomic program for the Basalt Waste Isolation Project (BWIP) requires the collection of information about economic, social and cultural conditions, demographic, housing and settlement patterns, and the provision of public services and facilities in order to monitor and assess the impacts of the project on the study area. Much of the information needed by the socioeconomic program is compiled, maintained, and used by officials or staff members of local, regional, state, or tribal agencies or organizations. Because much of this information is prepared for internal use, the documents are often not published or advertised and it can be difficult for researchers to identify many obscure, yet useful, sources of information. In order to identify and gain access to this information, it is often most efficient to talk directly with officials and staff members of pertinent agencies or organizations who may have knowledge of these documents or who may have useful information themselves. Consequently, interviews in the study communities with persons knowledgeable about the socioeconomic or sociocultural characteristics of the area constitute an important source of data for the socioeconomic program. In addition to identifying various data sources, these interviews provide a mechanism for understanding and interpreting those data. Knowledge of specific local conditions is often necessary to correctly interpret quantitative data. The purpose of this paper is to summarize the objectives of the community interviews task and the general methods that will be used in conducting the community interviews. 3 refs.

Bolton, P.A.

1987-11-01T23:59:59.000Z

108

Pouring flows  

Science Journals Connector (OSTI)

Free surface flows of a liquid poured from a container are calculated numerically for various configurations of the lip. The flow is assumed to be steady two dimensional and irrotational; the liquid is treated as inviscid and incompressible; and gravity is taken into account. It is shown that there are jetlike flows with two free surfaces and other flows with one free surface which follow along the underside of the lip or spout. The latter flows occur in the well?known ‘‘teapot effect ’’ which was treated previously without including gravity. Some of the results are applicable also to flows over weirs and spillways.

Jean?Marc Vanden?Broeck; Joseph B. Keller

1986-01-01T23:59:59.000Z

109

Pyroclastic flows and lavas of the Mogan and Fataga formations, Tejeda Volcano, Gran Canaria, Canary Islands: mineral chemistry, intensive parameters, and magma chamber evolution  

Science Journals Connector (OSTI)

The Mogan and Fataga formations on the island of Gran Canaria, Canary Islands, represent a sequence of...3 dense-rock equivalent) including subalkaline rhyolitic, peralkaline rhyolitic and trachytic pyroclastic f...

Joy A. Crisp; Frank J. Spera

1987-01-01T23:59:59.000Z

110

A Model For Syn-Eruptive Groundwater Flow During The Phreatoplinian Phase  

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 » A Model For Syn-Eruptive Groundwater Flow During The Phreatoplinian Phase Of The 28-29 March 1875 Askja Volcano Eruption, Iceland Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Model For Syn-Eruptive Groundwater Flow During The Phreatoplinian Phase Of The 28-29 March 1875 Askja Volcano Eruption, Iceland Details Activities (0) Areas (0) Regions (0) Abstract: We present a groundwater flow model that integrates geological observations, field data, effective permeabilities for fractured lava flows, and historical eyewitness records to explain the change from wet to

111

Summary of INEL research on the iron-enriched basalt waste form  

SciTech Connect (OSTI)

This report summarizes the knowledge base on the iron-enriched basalt (IEB) waste form developed at the Idaho National Engineering Laboratory (INEL) during 1979--1982. The results presented discuss the applicability of IEB in converting retrieved transuranic (TRU) waste from INEL`s Radioactive Waste Management Complex (RWMC) into a vitreous/ceramic (glassy/rock) stable waste form suitable for permanent disposal in an appropriate repository, such as the Waste Isolation Pilot Plant (WIPP) in New Mexico. Borosilicate glass (BSG), the approved high-level waste form, appears unsuited for this application. Melting the average waste-soil mix from the RWMC produces the IEB composition and attempting to convert IEB to the BSG composition would require additions of substantial B{sub 2}0{sub 3}, Na, and SiO{sub 2} (glass frit). IEB requires processing temperatures of 1400 to 1600{degrees}C, depending upon the waste composition. Production of the IEB waste form, using Joule heated melters, has proved difficult in the past because of electrode and refractory corrosion problems associated with the high temperature melts. Higher temperature electric melters (arc and plasma) are available to produce this final waste form. Past research focused on extensive slag property measurements, waste form leachability tests, mechanical, composition, and microstructure evaluations, as well as a host of experiments to improve production of the waste form. Past INEL studies indicated that the IEB glass-ceramic is a material that will accommodate and stabilize a wide range of heterogeneous waste materials, including long lived radionuclides and scrap metals, while maintaining a superior level of chemical and physical performance characteristics. Controlled cooling of the molten IEB and subsequent heat treatment will produce a glass-ceramic waste form with superior leach resistance.

Reimann, G.A.; Grandy, J.D.; Eddy, T.L.; Anderson, G.L.

1992-01-01T23:59:59.000Z

112

Summary of INEL research on the iron-enriched basalt waste form  

SciTech Connect (OSTI)

This report summarizes the knowledge base on the iron-enriched basalt (IEB) waste form developed at the Idaho National Engineering Laboratory (INEL) during 1979--1982. The results presented discuss the applicability of IEB in converting retrieved transuranic (TRU) waste from INEL's Radioactive Waste Management Complex (RWMC) into a vitreous/ceramic (glassy/rock) stable waste form suitable for permanent disposal in an appropriate repository, such as the Waste Isolation Pilot Plant (WIPP) in New Mexico. Borosilicate glass (BSG), the approved high-level waste form, appears unsuited for this application. Melting the average waste-soil mix from the RWMC produces the IEB composition and attempting to convert IEB to the BSG composition would require additions of substantial B{sub 2}0{sub 3}, Na, and SiO{sub 2} (glass frit). IEB requires processing temperatures of 1400 to 1600{degrees}C, depending upon the waste composition. Production of the IEB waste form, using Joule heated melters, has proved difficult in the past because of electrode and refractory corrosion problems associated with the high temperature melts. Higher temperature electric melters (arc and plasma) are available to produce this final waste form. Past research focused on extensive slag property measurements, waste form leachability tests, mechanical, composition, and microstructure evaluations, as well as a host of experiments to improve production of the waste form. Past INEL studies indicated that the IEB glass-ceramic is a material that will accommodate and stabilize a wide range of heterogeneous waste materials, including long lived radionuclides and scrap metals, while maintaining a superior level of chemical and physical performance characteristics. Controlled cooling of the molten IEB and subsequent heat treatment will produce a glass-ceramic waste form with superior leach resistance.

Reimann, G.A.; Grandy, J.D.; Eddy, T.L.; Anderson, G.L.

1992-01-01T23:59:59.000Z

113

Reference analysis on the use of engineered barriers for isolation of spent nuclear fuel in granite and basalt  

SciTech Connect (OSTI)

This report evaluates the effectiveness of engineered barriers in delaying or reducing the rate of release of radionuclides from spent fuel in geologic respositories in granite and basalt. It was assumed that the major exposure pathway from the respository to humans would be the ground-water system overlying or underlying a site. Hence, this report focuses on ground-water pathways. A geosphere transport model, GETOUT, and the biosphere transport/dose models, ALLDOS and PABLM, were integrated and used to calculate the potential radiological dose that might be received by humans at various times after repository closure.

Cloninger, M.O.; Cole, C.R.

1981-08-01T23:59:59.000Z

114

Flow chamber  

DOE Patents [OSTI]

A flow chamber having a vacuum chamber and a specimen chamber. The specimen chamber may have an opening through which a fluid may be introduced and an opening through which the fluid may exit. The vacuum chamber may have an opening through which contents of the vacuum chamber may be evacuated. A portion of the flow chamber may be flexible, and a vacuum may be used to hold the components of the flow chamber together.

Morozov, Victor (Manassas, VA)

2011-01-18T23:59:59.000Z

115

Depths and temperatures of <10.5?Ma mantle melting and the lithosphere-asthenosphere boundary below southern Oregon and northern California  

E-Print Network [OSTI]

Plagioclase and spinel lherzolite thermometry and barometry are applied to an extensive geochemical dataset of young (<10.5?Ma) primitive basaltic lavas from across Oregon's High Lava Plains, California's Modoc Plateau, ...

Till, Christy B.

116

Computed solid phases limiting the concentration of dissolved constituents in basalt aquifers of the Columbia Plateau in eastern Washington. Geochemical modeling and nuclide/rock/groundwater interaction studies  

SciTech Connect (OSTI)

A speciation-solubility geochemical model, WATEQ2, was used to analyze geographically-diverse, ground-water samples from the aquifers of the Columbia Plateau basalts in eastern Washington. The ground-water samples compute to be at equilibrium with calcite, which provides both a solubility control for dissolved calcium and a pH buffer. Amorphic ferric hydroxide, Fe(OH)/sub 3/(A), is at saturation or modestly oversaturated in the few water samples with measured redox potentials. Most of the ground-water samples compute to be at equilibrium with amorphic silica (glass) and wairakite, a zeolite, and are saturated to oversaturated with respect to allophane, an amorphic aluminosilicate. The water samples are saturated to undersaturated with halloysite, a clay, and are variably oversaturated with regard to other secondary clay minerals. Equilibrium between the ground water and amorphic silica presumably results from the dissolution of the glassy matrix of the basalt. The oversaturation of the clay minerals other than halloysite indicates that their rate of formation lags the dissolution rate of the basaltic glass. The modeling results indicate that metastable amorphic solids limit the concentration of dissolved silicon and suggest the same possibility for aluminum and iron, and that the processes of dissolution of basaltic glass and formation of metastable secondary minerals are continuing even though the basalts are of Miocene age. The computed solubility relations are found to agree with the known assemblages of alteration minerals in the basalt fractures and vesicles. Because the chemical reactivity of the bedrock will influence the transport of solutes in ground water, the observed solubility equilibria are important factors with regard to chemical-retention processes associated with the possible migration of nuclear waste stored in the earth's crust.

Deutsch, W.J.; Jenne, E.A.; Krupka, K.M.

1982-08-01T23:59:59.000Z

117

Slug flow  

E-Print Network [OSTI]

Introduction: When two phases flow concurrently in a pipe, they can distribute themselves in a number of different configurations. The gas could be uniformly dispersed throughout the liquid in the form of small bubbles. ...

Griffith, P.

1959-01-01T23:59:59.000Z

118

Quantitative 3-D Elemental Mapping by LA-ICP-MS of a Basaltic Clast from the Hanford 300 Area, Washington, USA  

E-Print Network [OSTI]

Quantitative 3-D Elemental Mapping by LA-ICP-MS of a Basaltic Clast from the Hanford 300 Area collected from the Hanford 300 Area in south-central Washington State, United States. A calibration method and riparian quality in many locations, most notably at the Hanford, Savannah River, Oak Ridge, and Nevada Test

Hu, Qinhong "Max"

119

The strontium isotopic composition of basalts from the East Pacific and Chile Rises and abyssal hills in the Eastern Pacific Ocean  

Science Journals Connector (OSTI)

Strontium isotopic differences between the basalts from the East Pacific and the Chile Rises (0.7026–0.7035, average 0.7028) and abyssal hills (0.7025–0.7037, average 0.7033) suggest that these are produced fr...

K. V. Subbarao

120

Reinforcement of glulam beams with basalt-and glass fibre sheets Wood is one of the oldest building material's men have utilized. The strength of the timber  

E-Print Network [OSTI]

Reinforcement of glulam beams with basalt- and glass fibre sheets Wood is one of the oldest beams (glued laminated timber beams). By strengthening glulam beams with material who has more tensile strength than the glulam beams themselves, it distributes the load from defected areas to areas with higher

Karlsson, Brynjar

Note: This page contains sample records for the topic "basaltic lava flows" 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

Potential for Natural Gas Storage in Deep Basalt Formations at Canoe Ridge, Washington State: A Hydrogeologic Assessment  

SciTech Connect (OSTI)

Between 1999 and 2002, Pacific Gas Transmission Company (PGT) (now TransCanada Pipeline Company) and AVISTA Corporation, together with technical support provided by the Pacific Northwest National Laboratory and the U.S. Department of Energy (DOE) examined the feasibility of developing a subsurface, natural gas-storage facility in deep, underlying Columbia River basalt in south-central Washington state. As part of this project, the 100 Circles #1 well was drilled and characterized in addition to surface studies. This report provides data and interpretations of the geology and hydrology collected specific to the Canoe Ridge site as part of the U.S. DOE funding to the Pacific Northwest National Laboratory in support of this project.

Reidel, Steve P.; Spane, Frank A.; Johnson, Vernon G.

2005-09-24T23:59:59.000Z

122

Completion Report for Model Evaluation Well ER-5-5: Corrective Action Unit 98: Frenchman Flat  

SciTech Connect (OSTI)

Model Evaluation Well ER-5-5 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of Nevada Environmental Management Operations at the Nevada National Security Site (formerly known as the Nevada Test Site). The well was drilled in July and August 2012 as part of a model evaluation well program in the Frenchman Flat area of Nye County, Nevada. The primary purpose of the well was to provide detailed geologic, hydrogeologic, chemical, and radiological data that can be used to test and build confidence in the applicability of the Frenchman Flat Corrective Action Unit flow and transport models for their intended purpose. In particular, this well was designed to obtain data to evaluate the uncertainty in model forecasts of contaminant migration from the upgradient underground nuclear test MILK SHAKE, conducted in Emplacement Hole U-5k in 1968, which were considered to be uncertain due to the unknown extent of a basalt lava-flow aquifer present in this area. Well ER-5-5 is expected to provide information to refine the Phase II Frenchman Flat hydrostratigraphic framework model, if necessary, as well as to support future groundwater flow and transport modeling. The 31.1-centimeter (cm) diameter hole was drilled to a total depth of 331.3 meters (m). The completion string, set at the depth of 317.2 m, consists of 16.8-cm stainless-steel casing hanging from 19.4-cm carbon-steel casing. The 16.8-cm stainless-steel casing has one slotted interval open to the basalt lava-flow aquifer and limited intervals of the overlying and underlying alluvial aquifer. A piezometer string was also installed in the annulus between the completion string and the borehole wall. The piezometer is composed of 7.3-cm stainless-steel tubing suspended from 6.0-cm carbon-steel tubing. The piezometer string was landed at 319.2 m, to monitor the basalt lava-flow aquifer. Data collected during and shortly after hole construction include composite drill cuttings samples collected every 3.0 m, various geophysical logs, preliminary water quality measurements, and water-level measurements. The well penetrated 331.3 m of Quaternary–Tertiary alluvium, including an intercalated layer of saturated basalt lava rubble. No well development or hydrologic testing was conducted in this well immediately after completion; however, a preliminary water level was measured in the piezometer string at the depth of 283.4 m on September 25, 2012. No tritium above the minimum detection limit of the field instruments was detected in this hole. Future well development, sampling, and hydrologic testing planned for this well will provide more accurate hydrologic information for this site. The stratigraphy, general lithology, and water level were as expected, though the expected basalt lava-flow aquifer is basalt rubble and not the dense, fractured lava as modeled. The lack of tritium transport is likely due to the difference in hydraulic properties of the basalt lava-flow rubble encountered in the well, compared to those of the fractured aquifer used in the flow and transport models.

NSTec Underground Test Area and Boreholes Programs and Operations

2013-01-18T23:59:59.000Z

123

SFTEL: Flow Cell | EMSL  

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

Flow Cell EMSL's Subsurface Flow and Transport Experimental Laboratory offers several meter-scale flow cells and columns for research in saturated and unsaturated porous media....

124

Alteration of basaltic glasses from north-central British Columbia, Canada  

SciTech Connect (OSTI)

Evidence of palagonitization is seen on all glasses studied from three Pleistocene subglacial volcanoes in north-central British Columbia, Canada. Samples from foreset breccias of Tuya Butte are more highly palagonitized than those from the tephra cones of Ash Mountain and Southern Tuya. Extensive palagonitization is generally associated with authigenic mineralization (clays, zeolites). Palagonite composition varies widely relative to glass composition, and palagonite can be broadly categorized as either high-Al or low-Al, depending on whether Al was retained or lost to aqueous solutions during palagonitization. Loss of Al during palagonitization is related to closed-system alteration, including precipitation of aluminosilicate authigenic cements. Microenvironment appears to be more influential than macroenvironment in determining the composition of palagonite. Palagonite rinds are compositionally zoned, generally becoming progressively higher in Al and Ca, and lower in Fe and Mg, towards the innermost (later-formed) portions of the rinds. Phillipsite is the first zeolite formed, followed by chabazite. Analcime and calcite occur in the most highly palagonitized samples. Mass balance considerations indicate higher mass loss where palagonitization has not proceeded to the point where zeolite solubility limits were attained in the local solution. Zeolites occur in closed-system conditions (low flow rates), where little net system mass loss or gain has occurred. The colloidal nature of palagonite allows the effective adsorption of Rb, Cs, Sr, Ba, and REEs.

Jercinovic, M.J. (Univ. of New Mexico, Albuquerque (USA)); Keil, K. (Univ. of Hawaii at Manoa, Honolulu (USA)); Smith, M.R.; Schmitt, R.A. (Oregon State Univ., Corvallis (USA))

1990-10-01T23:59:59.000Z

125

spe438-20 page 1 Garrison, N.J., Busby, C.J., Gans, P.B., Putirka, K., and Wagner, D.L., 2008, A mantle plume beneath California? The mid-Miocene Lovejoy flood basalt, northern  

E-Print Network [OSTI]

-Miocene Lovejoy flood basalt, northern California Noah J. Garrison Cathy J. Busby Phillip B. Gans Department the eastern Snake River Plain toward the Yellowstone caldera (Armstrong et al., 1975; Rodgers et al., 1990

Busby, Cathy

126

Seismic Characterization of Basalt Topography at Two Candidate Sites for the INL Remote-Handled Low-Level Waste Disposal Project  

SciTech Connect (OSTI)

This report presents the seismic refraction results from the depth to bed rock surveys for two areas being considered for the Remote-Handled Low-Level Waste (RH-LLW) disposal facility at the Idaho National Laboratory. The first area (Site 5) surveyed is located southwest of the Advanced Test Reactor Complex and the second (Site 34) is located west of Lincoln Boulevard near the southwest corner of the Idaho Nuclear Technology and Engineering Center (INTEC). At Site 5, large area and smaller-scale detailed surveys were performed. At Site 34, a large area survey was performed. The purpose of the surveys was to define the topography of the interface between the surficial alluvium and underlying basalt. Seismic data were first collected and processed using seismic refraction tomographic inversion. Three-dimensional images for both sites were rendered from the data to image the depth and velocities of the subsurface layers. Based on the interpreted top of basalt data at Site 5, a more detailed survey was conducted to refine depth to basalt. This report briefly covers relevant issues in the collection, processing and inversion of the seismic refraction data and in the imaging process. Included are the parameters for inversion and result rendering and visualization such as the inclusion of physical features. Results from the processing effort presented in this report include fence diagrams of the earth model, for the large area surveys and iso-velocity surfaces and cross sections from the detailed survey.

Jeff Sondrup; Gail Heath; Trent Armstrong; Annette Shafer; Jesse Bennett; Clark Scott

2011-04-01T23:59:59.000Z

127

Restoration of areas disturbed by site studies for a mined commercial radioactive waste repository: The Basalt Waste Isolation Project (BWIP)  

SciTech Connect (OSTI)

The Basalt Waste Isolation Project (BWIP) was undertaken to environmentally characterize a portion of the US Department of Energy's Hanford Site in Washington State as a potential host for the nation's first mined commercial nuclear waste repository. Studies were terminated by Congress in 1987. Between 1976 and 1987, 72 areas located across the Hanford Site were disturbed by the BWIP. These areas include borehole pads, a large Exploratory Shaft Facility, and the Near Surface Test Facility. Most boreholes were cleared of vegetation, leveled, and stabilized with a thick layer of compacted pit-run gravel and sand. The Near Surface Test Facility consists of three mined adits, a rock-spoils bench, and numerous support facilities. Restoration began in 1988 with the objective of returning sites to pre-existing conditions using native species. The Hanford Site retains some of the last remnants of the shrub-steppe ecosystem in Washington. The primary constraints to restoring native vegetation at Hanford are low precipitation and the presence of cheatgrass, an extremely capable alien competitor. 5 figs.

Brandt, C.A.; Rickard, W.H. Jr.; Biehert, R.W.; Newell, R.L.; Page, T.L.

1989-01-01T23:59:59.000Z

128

Mixing of rhyolite, trachyte and basalt magma erupted from a vertically and laterally zoned reservoir, composite flow P1, Gran Canaria  

Science Journals Connector (OSTI)

The 14.1 Ma composite welded ignimbrite P1 (45 km3 DRE) on Gran Canaria is compositionally zoned from a felsic lower...3) zoned from crystal-poor to highly phyric; (2) a continuously zoned, evolved trachyte to so...

Armin Freundt; Hans-Ulrich Schmincke

1992-10-01T23:59:59.000Z

129

Determination of dispersivities and reactionkinetics of selected basalts of columbia river plateau using an inverse analytical solution technique  

E-Print Network [OSTI]

on the determination of transport parameters by modeling sodium transport in the Priest Rapids and Roza flow tops of the Wanapum formation, and Rocky Coulee and Umtanum flow tops of the Grande Ronde formation, within the Cold Creek Syncline of the Hanford Nuclear Waste...

Fahlquist, Lisa Armstrong

2012-06-07T23:59:59.000Z

130

Low volume flow meter  

DOE Patents [OSTI]

The low flow monitor provides a means for determining if a fluid flow meets a minimum threshold level of flow. The low flow monitor operates with a minimum of intrusion by the flow detection device into the flow. The electrical portion of the monitor is externally located with respect to the fluid stream which allows for repairs to the monitor without disrupting the flow. The electronics provide for the adjustment of the threshold level to meet the required conditions. The apparatus can be modified to provide an upper limit to the flow monitor by providing for a parallel electronic circuit which provides for a bracketing of the desired flow rate.

Meixler, Lewis D. (East Windsor, NJ)

1993-01-01T23:59:59.000Z

131

Lava Dome | Open Energy Information  

Open Energy Info (EERE)

"coulees." Volcanic domes commonly occur within the craters or on the flanks of large composite volcanoes. The nearly circular Novarupta Dome that formed during the 1912 eruption...

132

Propeller Flow Meter  

E-Print Network [OSTI]

Propeller flow meters are commonly used to measure water flow rate. They can also be used to estimate irrigation water use. This publication explains how to select, install, read and maintain propeller flow meters....

Enciso, Juan; Santistevan, Dean; Hla, Aung K.

2007-10-01T23:59:59.000Z

133

Dispersed flow film boiling  

E-Print Network [OSTI]

Dispersed flow consists of small liquid droplets entrained in a flowing vapor. This flow regime can occur in cryogenic equipment, in steam generators, and during nuclear reactor loss of coolant accidents. A theoretical ...

Yoder, Graydon L.

1980-01-01T23:59:59.000Z

134

Bacteria in shear flow  

E-Print Network [OSTI]

Bacteria are ubiquitous and play a critical role in many contexts. Their environment is nearly always dynamic due to the prevalence of fluid flow: creeping flow in soil, highly sheared flow in bodily conduits, and turbulent ...

Marcos, Ph.D. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

135

Flow Distances on Open Flow Networks  

E-Print Network [OSTI]

Open flow network is a weighted directed graph with a source and a sink, depicting flux distributions on networks in the steady state of an open flow system. Energetic food webs, economic input-output networks, and international trade networks, are open flow network models of energy flows between species, money or value flows between industrial sectors, and goods flows between countries, respectively. Flow distances (first-passage or total) between any given two nodes $i$ and $j$ are defined as the average number of transition steps of a random walker along the network from $i$ to $j$ under some conditions. They apparently deviate from the conventional random walk distance on a closed directed graph because they consider the openness of the flow network. Flow distances are explicitly expressed by underlying Markov matrix of a flow system in this paper. With this novel theoretical conception, we can visualize open flow networks, calculating centrality of each node, and clustering nodes into groups. We apply fl...

Guo, Liangzhu; Shi, Peiteng; Wang, Jun; Huang, Xiaohan; Zhang, Jiang

2015-01-01T23:59:59.000Z

136

Carbon Storage in Basalt  

Science Journals Connector (OSTI)

...immobile and thus the storage more secure, though...continental margins have huge storage capacities adjacent...unlimited supplies of seawater. On the continents...present in the target storage formation can be pumped up and used to dissolve...

Sigurdur R. Gislason; Eric H. Oelkers

2014-04-25T23:59:59.000Z

137

Mare Basalt Petrogenesis  

Science Journals Connector (OSTI)

...near-surface fractionation processes. However, the various groups...17 Orange Glass) cannot be interrelated by such processes, nor can the high-Ti suite...and Green Glass cannot be interrelated by simple fractionation...

1977-01-01T23:59:59.000Z

138

The Deccan Trap – Cretaceous–Paleogene boundary connection; new 40Ar/39Ar ages and critical assessment of existing argon data pertinent to this hypothesis  

Science Journals Connector (OSTI)

Abstract The Cretaceous–Paleogene boundary (KPgB) was dated by the 40Ar/39Ar method herein from the western interior of North America at 65.48 ± 0.12 Ma (1?), in good agreement with other recent published estimates. For the Deccan Traps, India, new argon ages as well as others available in the literature, are assessed for reliability based on (a) statistical reliability of plateau/isochron sections and (b) freshness of material dated utilizing the alteration index method. From tholeiitic lavas from the Composite Western Ghats Section (CWGS), only six ages are found to be reliable estimates of the time of crystallization. These ages along with the magnetic polarity of the lavas agree with the geomagnetic polarity time scale (GPTS) at ?67–64 Ma. Alkaline rocks from the Anjar area of Kutch, provide three reliable ages that suggest a hiatus in lava extrusion around KPgB. For the Rajahmundry basalts, the upper flow’s age defines its formation during chron 29n; a single age from the lower reversed polarity flow appears somewhat dichotomous when plotted against the GPTS. The reliable lava ages indicate the most voluminous (reversed polarity) sections of the CWGS were extruded at a time statistically indistinguishable from that of the KPgB. The Deccan Trap – \\{KPgB\\} faunal extinction hypothesis remains plausible, but must compete with the latest report, favoring a very close temporal connection (?0.03 m.y.) between the Chixculub (Impact) Crater and the KPgB.

Ajoy K. Baksi

2014-01-01T23:59:59.000Z

139

Peridotite and pyroxenite xenoliths from Tarim, NW China: Evidences for melt depletion and mantle refertilization in the mantle source region of the Tarim flood basalt  

Science Journals Connector (OSTI)

Abstract Mantle-derived spinel peridotite and spinel plagioclase pyroxenite xenoliths hosted in Cenozoic alkali basalts (20 Ma) are found in the Xikeer area, western Tarim Block, NW China. Based on petrographic and geochemical characteristics, the peridotite xenoliths are divided into three groups. Group 1 peridotite xenoliths have experienced high degree melt extraction (~ 17% fractional melting) and weak, incipient metasomatism. Group 2 and 3 peridotite xenoliths have undergone extensive silicate melt metasomatism, resulting in clinopyroxenes with spoon-shaped and highly fractionated REE patterns respectively. Although their present texture is metamorphic, the pyroxenite xenoliths were initially of metasomatic origin, with high pressure protolith mineral assemblage of orthopyroxene + clinopyroxene + spinel ± olivine. Numerical modeling of the Mg-number shows that the Xikeer pyroxenites may have resulted from reaction between Group 1 peridotite and a primitive Permian picritic melt at a high melt/rock ratio (> 15) and that the host basanite is incapable of being the metasomatic melt. The Re–Os isotopic systematics of the Xikeer peridotites and pyroxenites yield an apparent isochron of ~ 290 Ma, virtually identical to the age of Tarim flood basalts. Their ?Nd(t = 290 Ma) ranges from + 9.5 to + 14.3, typical of convecting mantle. We propose that the Xikeer xenolith suite may have been initially formed by melt extraction from the convecting mantle and, shortly after, was refertilized by Tarim mantle plume melts during the Early Permian, a process which is referred to as mantle ‘auto-refertilization’.

Mi-Mi Chen; Wei Tian; Katsuhiko Suzuki; M.-L.-G. Tejada; Feng-Lin Liu; Ryoko Senda; Chun-Jing Wei; Bin Chen; Zhu-Yin Chu

2014-01-01T23:59:59.000Z

140

Portable wastewater flow meter  

DOE Patents [OSTI]

A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

1999-02-02T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Portable wastewater flow meter  

DOE Patents [OSTI]

A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under full pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

1990-01-01T23:59:59.000Z

142

Origin and formation of neck in a basin landform: Examples from the Camargo volcanic field, Chihuahua (México)  

Science Journals Connector (OSTI)

The term “neck in a basin” (NIB) landform is proposed for volcanic structures characterized by nearly circular to elliptical open basins, located near the headwater of small streams or drainages, which contain small volcanic necks and/or erosion remnants of one (or more) cinder cones. NIB landforms are typically 400-1000 m in diameter and 30-100 m deep and are invariably surrounded by steep walls cut into one or more basaltic lava flows. NIB landforms lack evidence for a primary volcanogenic origin through either collapse or youthful eruptive activity. In the Pliocene portion (4 – 2 Ma) of the Plio-Quaternary Camargo volcanic field of Chihuahua (México), they are relatively numerous and are best developed at the margins of a gently sloping (3-5°) basaltic lava plateau and near major fault scarps. Mature NIB landforms have ring-like circular drainage patterns and central elevations marked by small volcanic necks and associated radial dikes intruded into basaltic scoria-fall and /or agglutinate deposits. We interpret NIB landforms to be erosional in origin. They develop where a cinder cone is surrounded by one or more sheet-like lava flows from one or more separate subsequent vents. Once eruptive activity ceases at the younger volcano(es), fluvial erosion gradually produces a ring-like drainage pattern along the contact between the lava and the older cinder cone. As a response to a marked contrast in resistance to erosion between lava flows and unconsolidated or poorly lithified pyroclastic deposits, the older cinder cone is preferentially eroded. In this manner, a ring-shaped, steep sided erosional basin, preformed by the scoria cone, is produced; eventually fluvial erosion exposes the central neck and dikes. The volume, relief, and age of the volcanic field are key factors in the formation and preservation of a NIB landform. They form in volcanic fields where lava emissions are sufficiently vigorous to engulf earlier cinder cones. Relief and associated high rates of fluvial erosion play an important role in NIB development, as demonstrated by their locations in the Camargo volcanic field. Fully developed NIB landforms are not found in Quaternary volcanic fields, probably because erosion has not had sufficient time to generate their characteristics features. NIB landforms are also absent in Miocene fields, because erosion has proceeded too far, and thus has completely removed any NIB landform that may once have existed. The Camargo volcanic field is the only major area of Pliocene intraplate eruptive activity in northern México, and the only place where NIB landforms are relatively abundant.

José Jorge Aranda-Gómez; Todd B. Housh; James F. Luhr; Cristina Noyola-Medrano; Marco Antonio Rojas-Beltrán

2010-01-01T23:59:59.000Z

143

Plastic Flow in Glass  

Science Journals Connector (OSTI)

...1964 research-article Plastic Flow in Glass D. M. Marsh The classical brittle fracture...account for the mechanical properties of glasses, but the widespread evidence of plastic flow in all glass fracture phenomena even at room temperature...

1964-01-01T23:59:59.000Z

144

Ultrasonic flow metering system  

DOE Patents [OSTI]

A system for determining the density, flow velocity, and mass flow of a fluid comprising at least one sing-around circuit that determines the velocity of a signal in the fluid and that is correlatable to a database for the fluid. A system for determining flow velocity uses two of the inventive circuits with directional transmitters and receivers, one of which is set at an angle to the direction of flow that is different from the others.

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

2002-01-01T23:59:59.000Z

145

Elbow mass flow meter  

DOE Patents [OSTI]

Elbow mass flow meter. The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity.

McFarland, Andrew R. (College Station, TX); Rodgers, John C. (Santa Fe, NM); Ortiz, Carlos A. (Bryan, TX); Nelson, David C. (Santa Fe, NM)

1994-01-01T23:59:59.000Z

146

A New Approach to Computing Max Flows using Electrical Flows  

E-Print Network [OSTI]

A New Approach to Computing Max Flows using Electrical Flows Yin Tat Lee (MIT) Satish Rao (UC-Kelner-Madry-Spielman-Teng'11]: approximate flow in time Uses electrical flows. 7 #12;Electrical Flows 3 1 S t 8 #12;Electrical Flows Identify Graph with Resistor Network R(e)=1/w(e) 1/3 S t 1 9 #12;Electrical Flows Electrical flow

Rajamani, Sriram K.

147

Low flow fume hood  

DOE Patents [OSTI]

A fume hood is provided having an adequate level of safety while reducing the amount of air exhausted from the hood. A displacement flow fume hood works on the principal of a displacement flow which displaces the volume currently present in the hood using a push-pull system. The displacement flow includes a plurality of air supplies which provide fresh air, preferably having laminar flow, to the fume hood. The displacement flow fume hood also includes an air exhaust which pulls air from the work chamber in a minimally turbulent manner. As the displacement flow produces a substantially consistent and minimally turbulent flow in the hood, inconsistent flow patterns associated with contaminant escape from the hood are minimized. The displacement flow fume hood largely reduces the need to exhaust large amounts of air from the hood. It has been shown that exhaust air flow reductions of up to 70% are possible without a decrease in the hood's containment performance. The fume hood also includes a number of structural adaptations which facilitate consistent and minimally turbulent flow within a fume hood.

Bell, Geoffrey C. (Pleasant Hill, CA); Feustel, Helmut E. (Albany, CA); Dickerhoff, Darryl J. (Berkeley, CA)

2002-01-01T23:59:59.000Z

148

FLOW CONDITIONING DESIGN IN TURBULENT  

E-Print Network [OSTI]

for HYLIFE-II · Measure loss coefficient across the flow conditioner / nozzle assembly for different flow conditioner configurations #12;5 Flow Loop A Pump H 400 gal tank B Bypass line I Butterfly valve C Flow meter

149

 

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

3, 2013 3, 2013 Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection Photo by J.D. Griggs, courtesy of U.S.Geological Survey Photo by J.D. Griggs, courtesy of U.S.Geological Survey How can a prehistoric volcanic eruption help us reduce the amount of CO2 released into the atmosphere today? The answer is found in the basalt formations created by the lava - formations that can be used as sites for injecting carbon dioxide (CO2) captured from industrial sources in a process called carbon capture and storage (CCS). The Big Sky Carbon Sequestration Partnership , one of seven Department of Energy (DOE) regional partnerships conducting carbon storage research with funding from the National Energy Technology Laboratory (NETL) and industrial partners, recently injected 1,000 metric tons of CO2 into the

150

Turbulent flow in graphene  

E-Print Network [OSTI]

We demonstrate the possibility of a turbulent flow of electrons in graphene in the hydrodynamic region, by calculating the corresponding turbulent probability density function. This is used to calculate the contribution of the turbulent flow to the conductivity within a quantum Boltzmann approach. The dependence of the conductivity on the system parameters arising from the turbulent flow is very different from that due to scattering.

Kumar S. Gupta; Siddhartha Sen

2009-11-03T23:59:59.000Z

151

Muffler Theory Considering Flow  

Science Journals Connector (OSTI)

The effect of a steady subsonic flow component upon the acoustical properties of pipes and of laminar and turbulent flow resistances is accounted for in an elementary fashion. The effect of the alternating or acoustic component upon the steady?flow properties is treated likewise. Acoustic transmission loss referred to the end radiation from a pipe is related to back pressure (increase in steady pressure due to the muffler). Equivalent circuits and diagrams of transmission loss vs back pressure are presented for some simple arrangements of pipes volumes irises and flow resistances.

Ewald Eichler

1962-01-01T23:59:59.000Z

152

High-Resolution Aeromagnetic Survey Map of Part of the Southwest Nevada Volcanic Field  

SciTech Connect (OSTI)

A high-resolution aeromagnetic survey was recently flown to collect data for geologic investigations in the Southwest Nevada Volcanic Field. This survey represents a marked improvement over previous (1999) surveys. The survey includes over 860 km{sup 2} covered by nearly 16,000 km of flightline with 60-m spacing and an instrument altitude of 30 m above the ground surface. Features of interest visible in the dataset include magnetic banding in the volcanic tuffs that form the faulted terrain and sharp delineation of Quaternary basalt cinder cones and lava flows. This 1:100,000-scale map includes a shaded-relief map base and a semi-transparent overlay of the aeromagnetic data, with inset maps illustrating (1) comparisons of detail between the 1999 and 2004 datasets, (2) polarity reversal banding in the volcanic tuff ridges, (3) details of the morphology of Quaternary basalt centers enhanced by aeromagnetic data, and (4) use of GIS in planning the survey.

G. Keating; R. Prueitt; A. Cogbill

2004-06-21T23:59:59.000Z

153

Elbow mass flow meter  

DOE Patents [OSTI]

The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity. 3 figs.

McFarland, A.R.; Rodgers, J.C.; Ortiz, C.A.; Nelson, D.C.

1994-08-16T23:59:59.000Z

154

Instream Flow Project  

Broader source: Energy.gov [DOE]

As a part of the Department of Energy’s Water Power Program, the Instream Flow Project was carried out by Oak Ridge National Laboratory, Pacific Northwest National Laboratory, and Argonne National Laboratory to develop tools aimed at defining environmental flow needs for hydropower operations.

155

Productivity & Energy Flow  

E-Print Network [OSTI]

1 Productivity & Energy Flow Ecosystem approach, focuses: on flow of energy, water, and nutrients (capture) of energy by autotrophs Gross (total) Net (total ­ costs) Secondary productivity- capture of energy by herbivores http://sciencebitz.com/?page_id=204 What Controls the Primary Productivity

Mitchell, Randall J.

156

Biocatalytic transformations of hydrothermal fluids  

Science Journals Connector (OSTI)

...of bacterial mats covering basalt lava surfaces (Jannasch & Wirsen 1981; Jannasch 1985...galactomannan hydrolysis > 90 Thermotoga xylanase xylan hydrolysis 105 Thermotoga glucose isomerase...suspension and in mats covering all solid surfaces within vent regions (Jannasch & Wirsen...

1997-01-01T23:59:59.000Z

157

Elliptic flow phenomenon at ATLAS  

E-Print Network [OSTI]

We summarize measurements of elliptic flow and higher order flow harmonics performed by the ATLAS experiment at the LHC. Results on event-averaged flow measurements and event-plane correlations in Pb+Pb collisions are discussed along with the event-by-event flow measurements. Further, we summarize results on flow in p+Pb collisions.

Martin Spousta

2014-06-20T23:59:59.000Z

158

Multiphase Flow Modeling Research  

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

Science Science Chris Guenther, Director Computational Science Division RUA Spring Meeting, Morgantown, WV March 2013 2 NETL's Multiphase Flow Science Team * The Multiphase Flow Science Team develops physics-based simulation models to conduct applied scientific research. - Development of new theory - Extensive on-site and collaborative V&V efforts and testing - Engages in technology transfer - Applies the models to industrial scale problems. 3 Why is Multiphase Flow Science Needed? * Industry is increasingly relying on multiphase technologies to produce clean and affordable energy with carbon capture. * Unfortunately, the presence of a solid phase reduces the operating capacity of a typical energy device from its original design on average by 40% [1].

159

Shroud leakage flow discouragers  

DOE Patents [OSTI]

A turbine assembly includes a plurality of rotor blades comprising a root portion, an airfoil having a pressure sidewall and a suction sidewall, and a top portion having a cap. An outer shroud is concentrically disposed about said rotor blades, said shroud in combination with said tip portions defining a clearance gap. At least one circumferential shroud leakage discourager is disposed within the shroud. The leakage discourager(s) increase the flow resistance and thus reduce the flow of hot gas flow leakage for a given pressure differential across the clearance gap to improve overall turbine efficiency.

Bailey, Jeremy Clyde (Middle Grove, NY); Bunker, Ronald Scott (Niskayuna, NY)

2002-01-01T23:59:59.000Z

160

Bypass Flow Study  

SciTech Connect (OSTI)

The purpose of the fluid dynamics experiments in the MIR (Matched Index of-Refraction) flow system at Idaho National Laboratory (INL) is to develop benchmark databases for the assessment of Computational Fluid Dynamics (CFD) solutions of the momentum equations, scalar mixing, and turbulence models for the flow ratios between coolant channels and bypass gaps in the interstitial regions of typical prismatic standard fuel element (SFE) or upper reflector block geometries of typical Modular High-temperature Gas-cooled Reactors (MHTGR) in the limiting case of negligible buoyancy and constant fluid properties. The experiments use Particle Image Velocimetry (PIV) to measure the velocity fields that will populate the bypass flow study database.

Richard Schultz

2011-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Magnetically stimulated fluid flow patterns  

ScienceCinema (OSTI)

Sandia National Laboratories' Jim Martin and Kyle Solis explain research on the effects of magnetic fields on fluid flows and how they stimulate vigorous flows. Fluid flow is a necessary phenomenon in everything from reactors to cooling engines in cars.

Martin, Jim; Solis, Kyle

2014-08-06T23:59:59.000Z

162

RMOTC - Testing - Flow Assurance  

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

Flow Assurance Flow Assurance RMOTC Flow Loop Facility Layout Notice: As of July 15th 2013, the Department of Energy announced the intent to sell Naval Petroleum Reserve Number 3 (NPR3). The sale of NPR-3 will also include the sale of all equipment and materials onsite. A decision has been made by the Department of Energy to complete testing at RMOTC by July 1st, 2014. RMOTC will complete testing in the coming year with the currently scheduled testing partners. For more information on the sale of NPR-3 and sale of RMOTC equipment and materials please join our mailing list here. Over a decade ago, RMOTC began cooperatively building a full-scale facility to test new flow assurance technology, mainly in the areas of hydrates and paraffins. Today, RMOTC's test facility consists of five individual loop

163

Holographic supersymmetric membrane flows  

Science Journals Connector (OSTI)

The M-theory lift of SU(3) ? U(1)R-invariant RG flow via a combinatorical use of the four-dimensional flow and 11-dimensional Einstein–Maxwell equations was found previously. By taking the three internal coordinates differently and preserving only the SU(3) symmetry from the CP2 space, we find a new 11-dimensional solution of the SU(3)-invariant RG flow interpolating from the SO(8)-invariant UV fixed point to the SU(3) ? U(1)R-invariant IR fixed point in four dimensions. We describe how the corresponding three-dimensional superconformal Chern–Simons matter theory deforms. By replacing the above CP2 space with the Einstein–Kahler twofold, we also find out a new 11-dimensional solution of the SU(2) ? U(1)-invariant RG flow connecting the above two fixed points in four dimensions.

Changhyun Ahn; Kyungsung Woo

2010-01-01T23:59:59.000Z

164

Optical flow switching  

E-Print Network [OSTI]

Present-day networks are being challenged by dramatic increases in bandwidth demand of emerging applications. We will explore a new transport, ldquooptical flow switchingrdquo, that will enable significant growth and ...

Chan, Vincent W. S.

165

Olefin Autoxidation in Flow  

E-Print Network [OSTI]

Handling hazardous multiphase reactions in flow brings not only safety advantages but also significantly improved performance, due to better mass transfer characteristics. In this paper, we present a continuous microreactor ...

Neuenschwander, Ulrich

166

Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry  

E-Print Network [OSTI]

Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry using energy flow method Azimuthal angle distribution at Q2 >100 GeV2 Energy flow method.Ukleja on behalf of the ZEUS Collaboration #12; Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I

167

Two-phase flow studies  

SciTech Connect (OSTI)

The two-phase flow program is directed at understanding the hydrodynamics of two-phase flows. The two-phase flow regime is characterized by a series of flow patterns that are designated as bubble, slug, churn, and annular flow. Churn flow has received very little scientific attention. This lack of attention cannot be justified because calculations predict that the churn flow pattern will exist over a substantial portion of the two-phase flow zone in producing geothermal wells. The University of Houston is experimentally investigating the dynamics of churn flow and is measuring the holdup over the full range of flow space for which churn flow exists. These experiments are being conducted in an air/water vertical two-phase flow loop. Brown University has constructed and is operating a unique two-phase flow research facility specifically designed to address flow problems of relevance to the geothermal industry. An important feature of the facility is that it is dedicated to two-phase flow of a single substance (including evaporation and condensation) as opposed to the case of a two-component two-phase flow. This facility can be operated with horizontal or vertical test sections of constant diameter or with step changes in diameter to simulate a geothermal well profile.

Hanold, R.J.

1983-12-01T23:59:59.000Z

168

Evaluation of flow hood measurements for residential register flows  

SciTech Connect (OSTI)

Flow measurement at residential registers using flow hoods is becoming more common. These measurements are used to determine if the HVAC system is providing adequate comfort, appropriate flow over heat exchangers and in estimates of system energy losses. These HVAC system performance metrics are determined by using register measurements to find out if individual rooms are getting the correct airflow, and in estimates of total air handler flow and duct air leakage. The work discussed in this paper shows that commercially available flow hoods are poor at measuring flows in residential systems. There is also evidence in this and other studies that flow hoods can have significant errors even when used on the non-residential systems they were originally developed for. The measurement uncertainties arise from poor calibrations and the sensitivity of exiting flow hoods to non-uniformity of flows entering the device. The errors are usually large--on the order of 20% of measured flow, which is unacceptably high for most applications. Active flow hoods that have flow measurement devices that are insensitive to the entering airflow pattern were found to be clearly superior to commercially available flow hoods. In addition, it is clear that current calibration procedures for flow hoods may not take into account any field application problems and a new flow hood measurement standard should be developed to address this issue.

Walker, I.S.; Wray, C.P.; Dickerhoff, D.J.; Sherman, M.H.

2001-09-01T23:59:59.000Z

169

Flow Test | Open Energy Information  

Open Energy Info (EERE)

Flow Test Flow Test Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Flow Test Details Activities (38) Areas (33) Regions (1) NEPA(3) 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: Flow tests provide information on permeability, recharge rates, reservoir pressures, fluid chemistry, and scaling. Thermal: Flow tests can measure temperature variations with time to estimate characteristics about the heat source. Dictionary.png Flow Test: Flow tests are typically conducted shortly after a well has been drilled to test its productivity. The well is opened and fluids are released, the

170

Electrocapturing flow cell  

DOE Patents [OSTI]

A flow cell for electrophoretically-assisted capturing analytes from a flow. The flow cell includes a specimen chamber, a first membrane, a second membrane, a first electrode chamber, and a second electrode chamber. The specimen chamber may have a sample inlet and a sample outlet. A first portion of the first membrane may be coupled to a first portion of the specimen chamber. A first portion of the second membrane may be coupled to a second portion of the specimen chamber. The first electrode chamber may be configured to accept a charge. A portion of the first electrode chamber may be coupled to a second portion of the first membrane. A second electrode chamber may be configured to accept an opposite charge. A portion of the second electrode chamber may be coupled to a second portion of the second membrane.

Morozov, Victor (Manassas, VA)

2011-04-05T23:59:59.000Z

171

Workshop on hypersonic flow  

SciTech Connect (OSTI)

An overview is given of research activity on the application of computational fluid dynamics (CDF) for hypersonic propulsion systems. After the initial consideration of the highly integrated nature of air-breathing hypersonic engines and airframe, attention is directed toward computations carried out for the components of the engine. A generic inlet configuration is considered in order to demonstrate the highly three dimensional viscous flow behavior occurring within rectangular inlets. Reacting flow computations for simple jet injection as well as for more complex combustion chambers are then discussed in order to show the capability of viscous finite rate chemical reaction computer simulations. Finally, the nozzle flow fields are demonstrated, showing the existence of complex shear layers and shock structure in the exhaust plume. The general issues associated with code validation as well as the specific issue associated with the use of CFD for design are discussed. A prognosis for the success of CFD in the design of future propulsion systems is offered.

Povinelli, L.A.

1990-01-01T23:59:59.000Z

172

Multiphase cooling flows  

E-Print Network [OSTI]

I discuss the multiphase nature of the intracluster medium whose neglect can lead to overestimates of the baryon fraction of clusters by up to a factor of two. The multiphase form of the cooling flow equations are derived and reduced to a simple form for a wide class of self-similar density distributions. It is shown that steady-state cooling flows are \\emph{not} consistent with all possible emissivity profiles which can therefore be used as a test of the theory. In combination, they provide strong constraints on the mass distribution within the cooling radius.

Peter A. Thomas

1996-08-20T23:59:59.000Z

173

Volume 13, Number 5 Q05001, doi:10.1029/2011GC004016  

E-Print Network [OSTI]

of Geosciences, University of Panama, Panama City, Panama [1] Lava flow mapping is both an essential component

174

Planetary heat flow measurements  

Science Journals Connector (OSTI)

...ESA's Rosetta mission towards comet Churyumov-Gerasimenko. It...Heat flow measurements on comets have a different motivation...penetrator is by no means limited to comets; it has also been tested in...measurement. Currently, a landing on Mercury within the framework...

2005-01-01T23:59:59.000Z

175

The Flow of Water  

Science Journals Connector (OSTI)

... for ice-covered streams become of very great importance wlieii a stream is required for hydroelectric power production. An appendix is attached of fifty - two well- selected problems relating ... The remaining chapters dealing with flow in pipes and channels and with centrifugal pumps and turbines call for no particular comment. It is of interest to find a chapter dealing ...

1927-12-31T23:59:59.000Z

176

ENERGY FLOWS CLIMATE CHANGE  

E-Print Network [OSTI]

absorption of solar radiation. #12;AEROSOLS AS SEEN FROM SPACE Fire plumes from southern Mexico transportedENERGY FLOWS FORCINGS CLIMATE CHANGE A REALLY TOUGH PROBLEM Stephen E. Schwartz, BNL, 7-20-11 www average temperature 15°C or 59°F #12;ATMOSPHERIC RADIATION Power per area Energy per time per area Unit

Schwartz, Stephen E.

177

US energy flow, 1991  

SciTech Connect (OSTI)

Trends in energy consumption and assessment of energy sources are discussed. Specific topics discussed include: energy flow charts; comparison of energy use with 1990 and earlier years; supply and demand of fossil fuels (oils, natural gas, coal); electrical supply and demand; and nuclear power.

Borg, I.Y.; Briggs, C.K.

1992-06-01T23:59:59.000Z

178

The bedrock electrical conductivity structure of Northern Ireland  

Science Journals Connector (OSTI)

......of NI rock lithologies are the Antrim flood basalts. These are found to be relatively...presence of gas desorption. (2011) Colorado Springs. Transactions of the SPWLA 52nd...emplacement. By way of contrast, extensive flood basalts (the Antrim lavas) record a......

David Beamish

2013-01-01T23:59:59.000Z

179

Self-Organized Network Flows  

E-Print Network [OSTI]

A model for traffic flow in street networks or material flows in supply networks is presented, that takes into account the conservation of cars or materials and other significant features of traffic flows such as jam formation, spillovers, and load-dependent transportation times. Furthermore, conflicts or coordination problems of intersecting or merging flows are considered as well. Making assumptions regarding the permeability of the intersection as a function of the conflicting flows and the queue lengths, we find self-organized oscillations in the flows similar to the operation of traffic lights.

Helbing, D; Lämmer, S; Helbing, Dirk; Siegmeier, Jan; L\\"{a}mmer, Stefan

2007-01-01T23:59:59.000Z

180

Identification of major rock-water interactions on either side of a hydrologic barrier in the Wanapum Formation, Washington  

E-Print Network [OSTI]

-level radioactive waste storage facility prompted intensive research into the geology, hydrogeology, and ground-water chemistry of the basalt aquifers. The Basalt Waste Isolation Project (BWIP) was undertaken to investigate the suitability of a deep basalt flow...-level radioactive waste storage facility prompted intensive research into the geology, hydrogeology, and ground-water chemistry of the basalt aquifers. The Basalt Waste Isolation Project (BWIP) was undertaken to investigate the suitability of a deep basalt flow...

Dean, Warren Theodore

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

flow_loop.indd  

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

FLOW ASSURANCE TEST LOOP FLOW ASSURANCE TEST LOOP Objective O ver a decade ago, RMOTC began cooperatively building a full-scale facility to test new fl ow assurance technology, mainly in the areas of hydrates and paraffi ns. Today, RMOTC's test facility consists of fi ve individual loop sections, including chilling and heated pipe-in-pipe water sections, bare lines, and a mixing section. The facility was designed to represent typical deepwater production systems in order to simulate full-scale tests and apply the results to fl ow assurance fi eld applications and technology. The current facility design consists of a 6" x 3,600 maximum allowable operating pressure test pipeline in fi ve separate loops. The test loops begin and ter- minate at a central location just north

182

Structural power flow measurement  

SciTech Connect (OSTI)

Previous investigations of structural power flow through beam-like structures resulted in some unexplained anomalies in the calculated data. In order to develop structural power flow measurement as a viable technique for machine tool design, the causes of these anomalies needed to be found. Once found, techniques for eliminating the errors could be developed. Error sources were found in the experimental apparatus itself as well as in the instrumentation. Although flexural waves are the carriers of power in the experimental apparatus, at some frequencies longitudinal waves were excited which were picked up by the accelerometers and altered power measurements. Errors were found in the phase and gain response of the sensors and amplifiers used for measurement. A transfer function correction technique was employed to compensate for these instrumentation errors.

Falter, K.J.; Keltie, R.F.

1988-12-01T23:59:59.000Z

183

Modeling Turbulent Flow  

National Nuclear Security Administration (NNSA)

Turbulent Turbulent Flow with Implicit LES L.G. Margolin 1 Proceedings of the Joint Russian-American Five Laboratory Conference on Computational Mathematics/Physics 19-23 June, 2005 Vienna, Austria 1 Applied Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, len@lanl.gov 1 Abstract Implicit large eddy simulation (ILES) is a methodology for modeling high Reynolds' num- ber flows that combines computational efficiency and ease of implementation with predictive calculations and flexible application. Although ILES has been used for more than fifteen years, it is only recently that significant effort has gone into providing a physical rationale that speaks to its capabilities and its limitations. In this talk, we will present new theoret- ical results aimed toward building a justification and discuss some remaining gaps in our understanding and our practical

184

Neutrino Factory Mercury Flow Loop  

E-Print Network [OSTI]

Neutrino Factory Mercury Flow Loop V. GravesV. Graves C. Caldwell IDS-NF Videoconference March 9, 2010 #12;Flow Loop Review · 1 cm dia nozzle, 20 m/s jet requires 1.57 liter/sec mercury flow (94 2 liter/min 24 9 gpm)mercury flow (94.2 liter/min, 24.9 gpm). · MERIT experiment showed that a pump

McDonald, Kirk

185

Orifice flow measurement uncertainty  

SciTech Connect (OSTI)

A computer program is now available from Union Carbide that evaluates the total flow uncertainty of orifice flowmeter systems. Tolerance values for every component in the system and the sensitivity of the measured flowrate to each component can be established using historical data and published hardware specifications. Knowing the tolerance and sensitivity values, a total measurement uncertainty can be estimated with a 95% confidence level. This computer program provides a powerful design tool to ensure correct component matching and total metering system optimization.

Samples, C.R.

1984-04-01T23:59:59.000Z

186

Convective heat flow probe  

DOE Patents [OSTI]

A convective heat flow probe device is provided which measures heat flow and fluid flow magnitude in the formation surrounding a borehole. The probe comprises an elongate housing adapted to be lowered down into the borehole; a plurality of heaters extending along the probe for heating the formation surrounding the borehole; a plurality of temperature sensors arranged around the periphery of the probe for measuring the temperature of the surrounding formation after heating thereof by the heater elements. The temperature sensors and heater elements are mounted in a plurality of separate heater pads which are supported by the housing and which are adapted to be radially expanded into firm engagement with the walls of the borehole. The heat supplied by the heater elements and the temperatures measured by the temperature sensors are monitored and used in providing the desired measurements. The outer peripheral surfaces of the heater pads are configured as segments of a cylinder and form a full cylinder when taken together. A plurality of temperature sensors are located on each pad so as to extend along the length and across the width thereof, with a heating element being located in each pad beneath the temperature sensors. An expansion mechanism driven by a clamping motor provides expansion and retraction of the heater pads and expandable packet-type seals are provided along the probe above and below the heater pads.

Dunn, J.C.; Hardee, H.C.; Striker, R.P.

1984-01-09T23:59:59.000Z

187

Numerical Investigations of Magnetohydrodynamic Hypersonic Flows.  

E-Print Network [OSTI]

??Numerical simulations of magnetohydrodynamic (MHD) hypersonic flow are presented for both laminar and turbulent flow over a cylinder and flow entering a scramjet inlet. ANSYS… (more)

Guarendi, Andrew N

2013-01-01T23:59:59.000Z

188

Attractor Flows from Defect Lines  

E-Print Network [OSTI]

Deforming a two dimensional conformal field theory on one side of a trivial defect line gives rise to a defect separating the original theory from its deformation. The Casimir force between these defects and other defect lines or boundaries is used to construct flows on bulk moduli spaces of CFTs. It turns out, that these flows are constant reparametrizations of gradient flows of the g-functions of the chosen defect or boundary condition. The special flows associated to supersymmetric boundary conditions in N=(2,2) superconformal field theories agree with the attractor flows studied in the context of black holes in N=2 supergravity.

Ilka Brunner; Daniel Roggenkamp

2010-02-12T23:59:59.000Z

189

UZ Flow Models and Submodels  

SciTech Connect (OSTI)

The purpose of this report is to document the unsaturated zone (UZ) flow models and submodels, as well as the flow fields that have been generated using the UZ flow model(s) of Yucca Mountain, Nevada. In this report, the term ''UZ model'' refers to the UZ flow model and the several submodels, which include tracer transport, temperature or ambient geothermal, pneumatic or gas flow, and geochemistry (chloride, calcite, and strontium) submodels. The term UZ flow model refers to the three-dimensional models used for calibration and simulation of UZ flow fields. This work was planned in the ''Technical Work Plan (TWP) for: Unsaturated Zone Flow Analysis and Model Report Integration'' (BSC 2004 [DIRS 169654], Section 1.2.7). The table of included Features, Events, and Processes (FEPs), Table 6.2-11, is different from the list of included FEPs assigned to this report in the ''Technical Work Plan for: Unsaturated Zone Flow Analysis and Model Report Integration'' (BSC 2004 [DIRS 169654], Table 2.1.5-1), as discussed in Section 6.2.6. The UZ model has revised, updated, and enhanced the previous UZ model (BSC 2001 [DIRS 158726]) by incorporating the repository design with new grids, recalibration of property sets, and more comprehensive validation effort. The flow fields describe fracture-fracture, matrix-matrix, and fracture-matrix liquid flow rates, and their spatial distributions as well as moisture conditions in the UZ system. These three-dimensional UZ flow fields are used directly by Total System Performance Assessment (TSPA). The model and submodels evaluate important hydrogeologic processes in the UZ as well as geochemistry and geothermal conditions. These provide the necessary framework to test hypotheses of flow and transport at different scales, and predict flow and transport behavior under a variety of climatic conditions. In addition, the limitations of the UZ model are discussed in Section 8.11.

Y. Wu

2004-11-01T23:59:59.000Z

190

A Transient Numerical Simulation of Perched Ground-Water Flow at the Test Reactor Area, Idaho National Engineering and Environmental Laboratory, Idaho, 1952-94  

SciTech Connect (OSTI)

Studies of flow through the unsaturated zone and perched ground-water zones above the Snake River Plain aquifer are part of the overall assessment of ground-water flow and determination of the fate and transport of contaminants in the subsurface at the Idaho National Engineering and Environmental Laboratory (INEEL). These studies include definition of the hydrologic controls on the formation of perched ground-water zones and description of the transport and fate of wastewater constituents as they moved through the unsaturated zone. The definition of hydrologic controls requires stratigraphic correlation of basalt flows and sedimentary interbeds within the saturated zone, analysis of hydraulic properties of unsaturated-zone rocks, numerical modeling of the formation of perched ground-water zones, and batch and column experiments to determine rock-water geochemical processes. This report describes the development of a transient numerical simulation that was used to evaluate a conceptual model of flow through perched ground-water zones beneath wastewater infiltration ponds at the Test Reactor Area (TRA).

B. R. Orr (USGS)

1999-11-01T23:59:59.000Z

191

Annular flow diverter valve  

DOE Patents [OSTI]

A valve for diverting flow from the center of two concentric tubes to the annulus between the tubes or, operating in the reverse direction, for mixing fluids from concentric tubes into a common tube and for controlling the volume ratio of said flow consists of a toroidal baffle disposed in sliding engagement with the interior of the inner tube downstream of a plurality of ports in the inner tube, a plurality of gates in sliding engagement with the interior of the inner tube attached to the baffle for movement therewith, a servomotor having a bullet-shaped plug on the downstream end thereof, and drive rods connecting the servomotor to the toroidal baffle, the servomotor thereby being adapted to move the baffle into mating engagement with the bullet-shaped plug and simultaneously move the gates away from the ports in the inner tube and to move the baffle away from the bullet-shaped plug and simultaneously move the gates to cover the ports in the inner tube.

Rider, Robert L. (Walkersville, MD)

1980-01-01T23:59:59.000Z

192

Fluid flow monitoring device  

DOE Patents [OSTI]

A flow meter and temperature measuring device are described 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. 7 figures.

McKay, M.D.; Sweeney, C.E.; Spangler, B.S. Jr.

1993-11-30T23:59:59.000Z

193

Fluid flow monitoring device  

DOE Patents [OSTI]

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, Mark D. (1426 Socastee Dr., North Augusta, SC 29841); Sweeney, Chad E. (3600 Westhampton Dr., Martinez, GA 30907-3036); Spangler, Jr., B. Samuel (2715 Margate Dr., Augusta, GA 30909)

1993-01-01T23:59:59.000Z

194

Alteration of volcaniclastic debris and basalts in a submarine remnant arc: deep sea drilling project site 448, Palau-Kyushu Ridge, Philippine Sea  

E-Print Network [OSTI]

of i. terstial water, (c) ". ates and depths of burial, (d) geothermal and pressure gradiencs, (e) interstitial fluid flow rates, and (f) tectonic stresses. There have been few complete studies made on the mineralogical and chemical alteration... (Karig, 1975b; Scott, et al. , 1981). Presumably the thermal alteration process that affected the arc during the initial stages of arc formation must have died out soon after the cessation of volcanism. Hopefuliy a lowering of geothermal gradients...

Aldrich, Jeffrey Brooks

2012-06-07T23:59:59.000Z

195

Active combustion flow modulation valve  

DOE Patents [OSTI]

A flow modulation valve has a slidably translating hollow armature with at least one energizable coil wound around and fixably attached to the hollow armature. The energizable coil or coils are influenced by at least one permanent magnet surrounding the hollow armature and supported by an outer casing. Lorentz forces on the energizable coils which are translated to the hollow armature, increase or decrease the flow area to provide flow throttling action. The extent of hollow armature translation depends on the value of current supplied and the direction of translation depends on the direction of current flow. The compact nature of the flow modulation valve combined with the high forces afforded by the actuator design provide a flow modulation valve which is highly responsive to high-rate input control signals.

Hensel, John Peter; Black, Nathaniel; Thorton, Jimmy Dean; Vipperman, Jeffrey Stuart; Lambeth, David N; Clark, William W

2013-09-24T23:59:59.000Z

196

Differential probes aid flow measurement  

SciTech Connect (OSTI)

Nonconstricting differential pressure flow probes which help solve the problems of clogging, wear, and pressure loss at the Seawater Filtration Facility in Saudi Arabia are described. Treated seawater is pumped into oil-bearing formations for secondary recovery. Figures showing principle of operation for probes, installation schematic and long-term accuracy results (flow probes vs. orifice meters) are presented. The new diamond-shaped design flow sensor offers accurate flow measurement with low permanent pressure loss, which translates into cost savings for the operator.

Mesnard, D.R.

1982-07-01T23:59:59.000Z

197

Module bay with directed flow  

DOE Patents [OSTI]

A module bay requires less cleanroom airflow. A shaped gas inlet passage can allow cleanroom air into the module bay with flow velocity preferentially directed toward contaminant rich portions of a processing module in the module bay. Preferential gas flow direction can more efficiently purge contaminants from appropriate portions of the module bay, allowing a reduced cleanroom air flow rate for contaminant removal. A shelf extending from an air inlet slit in one wall of a module bay can direct air flowing therethrough toward contaminant-rich portions of the module bay, such as a junction between a lid and base of a processing module.

Torczynski, John R. (Albuquerque, NM)

2001-02-27T23:59:59.000Z

198

UZ Flow Models and Submodels  

SciTech Connect (OSTI)

The purpose of this Model Report is to document the unsaturated zone (UZ) fluid flow and tracer transport models and submodels as well as the flow fields generated utilizing the UZ Flow and Transport Model of Yucca Mountain (UZ Model), Nevada. This work was planned in ''Technical Work Plan (TWP) for: Performance Assessment Unsaturated Zone'' (BSC 2002 [160819], Section 1.10, Work Package AUZM06). The UZ Model has revised, updated, and enhanced the previous UZ Flow Model REV 00 ICN 01 (BSC 2001 [158726]) by incorporation of the conceptual repository design with new grids, recalibration of property sets, and more comprehensive validation effort. The flow fields describe fracture-fracture, matrix-matrix, and fracture-matrix liquid flow rates and their spatial distributions as well as moisture conditions in the UZ system. These 3-D UZ flow fields are used directly by Performance Assessment (PA). The model and submodels evaluate important hydrogeologic processes in the UZ as well as geochemistry and geothermal conditions. These provide the necessary framework to test conceptual hypotheses of flow and transport at different scales and predict flow and transport behavior under a variety of climatic conditions. In addition, this Model Report supports several PA activities, including abstractions, particle-tracking transport simulations, and the UZ Radionuclide Transport Model.

P. Dixon

2004-02-11T23:59:59.000Z

199

Flow Batteries: A Historical Perspective  

Broader source: Energy.gov [DOE]

Presentation by Robert Savinell, Case Western Reserve University, at the Flow Cells for Energy Storage Workshop held March 7-8, 2012, in Washington, DC.

200

Flow Relationships in Reverse Osmosis  

Science Journals Connector (OSTI)

Flow Relationships in Reverse Osmosis ... Effects of Hydrolysis on Cellulose Acetate Reverse-Osmosis Transport Coefficients ... Effects of Hydrolysis on Cellulose Acetate Reverse-Osmosis Transport Coefficients ...

Ulrich Merten

1963-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Financing Program Implementation Process Flow  

Broader source: Energy.gov [DOE]

The implementation process flow for financing with two models: a generic option for primary markets and a conceptual option for secondary markets.

202

ch_4  

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

20 20 Affected Environment 4.6 Geology and Soils This section describes the geological, mineral resources, seismic, and volcanic characteristics of INEEL, INTEC, and surrounding areas. A more detailed description of geology at INEEL can be reviewed in the SNF & INEL EIS, Volume 2, Part A, Section 4.6 (DOE 1995). 4.6.1 GENERAL GEOLOGY INEEL occupies a relatively flat area on the northwestern edge of the Eastern Snake River Plain. Figure 4-4 shows important geological features of the INEEL area. The area consists of a broad plain that has been built up from the eruptions of multi- ple flows of basaltic lava, which is shown on Figure 4-5. The flows at the surface range in age from 1.2 million to 2,100 years. The Plain is bounded on the north and south by the north-to-north-

203

E-Print Network 3.0 - acid silicates Sample Search Results  

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

Summary: domes - block and ash flows fumaroles groundwater crack conduit magma reservoir gas plume acid rain prevailing... 12;4 Lava Dome Lava Dome 12;5 fumaroles groundwater...

204

Effect of flow fluctuations and nonflow on elliptic flow methods  

SciTech Connect (OSTI)

We discuss how the different estimates of elliptic flow are influenced by flow fluctuations and nonflow effects. It is explained why the event-plane method yields estimates between the two-particle correlation methods and the multiparticle correlation methods. It is argued that nonflow effects and fluctuations cannot be disentangled without other assumptions. However, we provide equations where, with reasonable assumptions about fluctuations and nonflow, all measured values of elliptic flow converge to a unique mean v_2,PP elliptic flow in the participant plane and, with a Gaussian assumption on eccentricity fluctuations, can be converted to the mean v_2,RP in the reaction plane. Thus, the 20percent spread in observed elliptic flow measurements from different analysis methods is no longer mysterious.

Ollitrault, Jean-Yves; Poskanzer, Arthur M.; Voloshin, Sergei A.

2009-04-16T23:59:59.000Z

205

Cytology Automation by Flow Cytometry  

Science Journals Connector (OSTI)

...measured individually at rates of several hundred/sec...sured individually at rates of several hundred/sec...individually by flow cytometry at rates of several hundred/sec...flow cytometer (Bio/ Physics Systems Cytofluono graf...instrument and are made to pass through a 250-@rn-diameter...

Myron R. Melamed; Zbigniew Darzynkiewicz; Frank Traganos; and Thomas Sharpless

1977-08-01T23:59:59.000Z

206

Earth's Crust: Heat Flow Relationships  

Science Journals Connector (OSTI)

... of heat flow through the Earth's surface at any point requires two measurements, the geothermal gradient itself and the thermal conductivity of the adjacent rocks. In the oceanic crust, ... variations in heat flow from point to point are governed essentially by variations in the geothermal gradient. In continents, however, the story is different. Correlation and regression analyses carried ...

Our Geomagnetism Correspondent

1970-07-11T23:59:59.000Z

207

Redox Flow Batteries, a Review  

SciTech Connect (OSTI)

Redox flow batteries are enjoying a renaissance due to their ability to store large amounts of electrical energy relatively cheaply and efficiently. In this review, we examine the components of redox flow batteries with a focus on understanding the underlying physical processes. The various transport and kinetic phenomena are discussed along with the most common redox couples.

U. Tennessee Knoxville; U. Texas Austin; McGill U; Weber, Adam Z.; Mench, Matthew M.; Meyers, Jeremy P.; Ross, Philip N.; Gostick, Jeffrey T.; Liu, Qinghua

2011-07-15T23:59:59.000Z

208

Flow Duration Curve Load Duration Curve  

E-Print Network [OSTI]

given flow and concentration data--select appropriate conversion factors 3. Develop Load Duration Curve 4. Plot observed data with Load Duration Curve #12;What are they? How do you make one? #12;DescribesRangeFlows LowFlows 40 % of the time there has been no flow at this site #12;Gather daily flow rate data Load

209

The transition from two phase bubble flow to slug flow  

E-Print Network [OSTI]

The process of transition from bubble to slug flow in a vertical pipe has been studied analytically and experimentally. An equation is presented which gives the agglomeration time as a function of void fraction, channel ...

Radovcich, Nick A.

1962-01-01T23:59:59.000Z

210

Gas flow characterization of restrictive flow orifice devices  

SciTech Connect (OSTI)

A restrictive flow orifice (RFO) can be used to limit the uncontrolled release of system media upon component or line failure in a gas handling system and can thereby enhance the system safety. This report describes a new RFO product available from the Swagelok Companies and specifies the gas flow characteristics of this device. A family of four different sizes of RFO devices is documented.

Shrouf, R.G. [Sandia National Labs., Albuquerque, NM (United States). Safety Engineering Dept.; Page, S.R. [Albuquerque Valve and Fitting Co., NM (United States)

1997-07-01T23:59:59.000Z

211

Proper planning improves flow drilling  

SciTech Connect (OSTI)

Underbalanced operations reduce formation damage, especially in horizontal wells where zones are exposed to mud for longer time periods. Benefits, risks, well control concerns, equipment and issues associated with these operations are addressed in this paper. Flow drilling raises many concerns, but little has been published on horizontal well control and flow drilling operations. This article covers planning considerations for flow drilling, but does not address horizontal ''overbalanced'' drilling because considerations and equipment are the same as in vertical overbalanced drilling and many references address that subject. The difference in well control between vertical and horizontal overbalanced drilling is fluid influx behavior and how that behavior affects kill operations.

Collins, G.J. (Marathon Oil Co., Houston, TX (United States))

1994-10-01T23:59:59.000Z

212

Zonal flow as pattern formation  

SciTech Connect (OSTI)

Zonal flows are well known to arise spontaneously out of turbulence. We show that for statistically averaged equations of the stochastically forced generalized Hasegawa-Mima model, steady-state zonal flows, and inhomogeneous turbulence fit into the framework of pattern formation. There are many implications. First, the wavelength of the zonal flows is not unique. Indeed, in an idealized, infinite system, any wavelength within a certain continuous band corresponds to a solution. Second, of these wavelengths, only those within a smaller subband are linearly stable. Unstable wavelengths must evolve to reach a stable wavelength; this process manifests as merging jets.

Parker, Jeffrey B.; Krommes, John A. [Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)

2013-10-15T23:59:59.000Z

213

Two phase flow in capillary tubes  

E-Print Network [OSTI]

The flow of two phases, gas and liquid, has been studied in horizontal tubes of capillary diameter. The flow has been primarily studied in the regime where the gas flows as long bubbles separated from the wall of the tube ...

Suo, Mikio

1963-01-01T23:59:59.000Z

214

Calc-alkaline mafic rocks of the Black Dyke Formation: Remnants of the final activity of a submerged Permian volcano  

SciTech Connect (OSTI)

The Permian Black Dyke Fm., which occurs as large tectonic slices within the Luning allochthon in the Excelsior Mountains, NV, forms an E-W trending anticline at Black Dyke Mountain. The 800-m thick stratigraphic succession consists of volcanic and pyroclastic rocks overlain conformably by volcaniclastic sediments. Along the northern limb of the anticline, the rocks consist of mafic porphyritic lavas, breccias, and graded and ungraded pyroclastic beds. The sedimentary unit consists of thick volcaniclastic turbidites overlain by conglomerates, sandstones, and mudstones. Along the southern limb of the anticline, the sequence is replaced by reworked breccia, tuffs, and sandstones. Mafic plutonic rocks occur as xenoliths in the lavas and breccias, and as coeval plugs intruding the section. Gabbros show cumulate or porphyritic textures and are composed of amph, cpx, and zoned plag. Their Ti/V (14.5--15) and Nb/Y (0.25--0.3) ratios fall in the range commonly found in calc-alkaline rocks. Diorite porphyry shows high Al[sub 2]O[sub 3], ZrO[sub 2], and REE abundances indicating that this rock is more fractionated. Basalts and andesites are plag-cpx-opx phyric. They often include glomeroporphyritic clots of cpx with amph coronas. Some rocks exhibit fluidal textures. Both volcanic and plutonic rocks show homogeneous geochemical features and similar crystallization sequences: Fe-Ti oxides---->plag---->opx + cpx----> brown zoned hbl, suggesting that they are cogenetic. Thus, the lower part of the Black Dyke Fm. likely represents the final products formed in a calc-alkaline magma chamber because pyroclastic rocks prevail over lava flows and abundant early crystal cumulates occur as plugs or as inclusions in the lavas and breccias.

Blein, O.; Lapierre, H.; Pecher, A. (URA-CNRS, Grenoble (France)); Schweickert, R.A. (Univ. of Nevada, Reno, NV (United States). Dept. of Geological Science)

1993-04-01T23:59:59.000Z

215

Colorado: Isothermal Battery Calorimeter Quantifies Heat Flow...  

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

Isothermal Battery Calorimeter Quantifies Heat Flow, Helps Make Safer, Longer-lasting Batteries Colorado: Isothermal Battery Calorimeter Quantifies Heat Flow, Helps Make Safer,...

216

The lattice Boltzmann method for complex flows.  

E-Print Network [OSTI]

??This thesis presents the extension of the lattice Boltzmann equation (LBE) to several well-known flows. First, the flow over a cylinder is studied using the… (more)

Reis, Tim

2007-01-01T23:59:59.000Z

217

COMMON SENSE REASONING ABOUT PETROLEUM FLOW  

E-Print Network [OSTI]

SENSE REASONING ABOUT . PETROLEUM FLOW Steven Rosenberg I 'Sense Reasoning about Petroleum Flow By Steven Rosenbergand reasoning in a petroleum resources domain. A basic model

Rosenberg, Steven

2014-01-01T23:59:59.000Z

218

Category:Flow Test | Open Energy Information  

Open Energy Info (EERE)

| Sign Up Search Category Edit History Facebook icon Twitter icon Category:Flow Test Jump to: navigation, search Geothermalpower.jpg Looking for the Flow Test page? For...

219

Acoustic concentration of particles in fluid flow  

SciTech Connect (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

220

Acoustic Concentration Of Particles In Fluid Flow  

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

in a fluid flow includes a substantially acoustically transparent membrane and a vibration generator that define a fluid flow path therebetween. Available for thumbnail of...

Note: This page contains sample records for the topic "basaltic lava flows" 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

Coal flows | OpenEI  

Open Energy Info (EERE)

Coal flows Coal flows Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 142, and contains only the reference case. The dataset uses million short tons. The data is broken down into steam coal exports to Europe, Asia and America. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO Coal flows countries EIA exporting importing Data application/vnd.ms-excel icon AEO2011: World Steam Coal Flows By Importing Regions and Exporting Countries- Reference Case (xls, 103.7 KiB) Quality Metrics Level of Review Peer Reviewed Comment Temporal and Spatial Coverage Frequency Annually Time Period 2008-2035 License

222

Multiscale modeling in granular flow  

E-Print Network [OSTI]

Granular materials are common in everyday experience, but have long-resisted a complete theoretical description. Here, we consider the regime of slow, dense granular flow, for which there is no general model, representing ...

Rycroft, Christopher Harley

2007-01-01T23:59:59.000Z

223

Studies of Flows in Plasmas  

SciTech Connect (OSTI)

Note a pdf document "DOE-flow-final-report' should be attached. If it somehow is not please notify Walter Gekelman (gekelman@physics.ucla.edu) who will e mail it directly

Gekelman, Walter; Morales, George; Maggs, James

2009-03-07T23:59:59.000Z

224

Fluid Flow Modeling in Fractures  

E-Print Network [OSTI]

In this paper we study fluid flow in fractures using numerical simulation and address the challenging issue of hydraulic property characterization in fractures. The methodology is based on Computational Fluid Dynamics, ...

Sarkar, Sudipta

2004-01-01T23:59:59.000Z

225

Capillary flows in flexible structures  

E-Print Network [OSTI]

Interactions between capillary and elastic effects are relevant to a variety of applications, from micro- and nano-scale manufacturing to biological systems. In this thesis, we investigate capillary flows in extremely ...

Hoberg, Theresa B. (Theresa Blinn)

2013-01-01T23:59:59.000Z

226

Flow assurance and multiphase pumping  

E-Print Network [OSTI]

. LITERATURE REVIEW???????????????????????????????????.. 5 Deepwater Oilfields???????????????????????????????????.. 7 Flow Assurance?????????????????????????????????????.. 9 Hydrate Management??????????????????????????????????. 11 Stranded Gas...???????????????????????????????????????.. 172 Management in Oil and Gas???????????????????????????????. 172 Constraints and Recent Advances????????????????????????????. 173 Optimization for Oilfield Management??????????????????????????. 174 Asset Management...

Nikhar, Hemant G.

2009-05-15T23:59:59.000Z

227

Energy flows, metabolism and translation  

Science Journals Connector (OSTI)

...L. , Pascal, R. 2011 Energy sources, self-organization...E. 1946 What's life. New York, NY: McMillan. 14 Lotka...nonequilibrium systems. New York, NY: Wiley. 17 Morowitz, H. , Smith, E. 2007 Energy flow and the organization...

2011-01-01T23:59:59.000Z

228

Equidistribution results for geodesic flows  

E-Print Network [OSTI]

Using the works of Ma\\~n\\'e \\cite{Ma} and Paternain \\cite{Pat} we study the distribution of geodesic arcs with respect to equilibrium states of the geodesic flow on a closed manifold, equipped with a $\\mathcal{C}^{\\infty}$ Riemannian metric. We prove large deviations lower and upper bounds and a contraction principle for the geodesic flow in the space of probability measures of the unit tangent bundle. We deduce a way of approximating equilibrium states for continuous potentials.

Abdelhamid Amroun

2011-09-15T23:59:59.000Z

229

Subcritical dynamos in shear flows  

E-Print Network [OSTI]

Identifying generic physical mechanisms responsible for the generation of magnetic fields and turbulence in differentially rotating flows is fundamental to understand the dynamics of astrophysical objects such as accretion disks and stars. In this paper, we discuss the concept of subcritical dynamo action and its hydrodynamic analogue exemplified by the process of nonlinear transition to turbulence in non-rotating wall-bounded shear flows. To illustrate this idea, we describe some recent results on nonlinear hydrodynamic transition to turbulence and nonlinear dynamo action in rotating shear flows pertaining to the problem of turbulent angular momentum transport in accretion disks. We argue that this concept is very generic and should be applicable to many astrophysical problems involving a shear flow and non-axisymmetric instabilities of shear-induced axisymmetric toroidal velocity or magnetic fields, such as Kelvin-Helmholtz, magnetorotational, Tayler or global magnetoshear instabilities. In the light of several recent numerical results, we finally suggest that, similarly to a standard linear instability, subcritical MHD dynamo processes in high-Reynolds number shear flows could act as a large-scale driving mechanism of turbulent flows that would in turn generate an independent small-scale dynamo.

F. Rincon; G. I. Ogilvie; M. R. E. Proctor; C. Cossu

2008-05-09T23:59:59.000Z

230

Pressure and flow characteristics of restrictive flow orifice devices.  

SciTech Connect (OSTI)

A Restrictive Flow Orifice (RFO) can be used to enhance the safe design of a pressure system in several ways. Pressure systems frequently incorporate a regulator and relief valve to protect the downstream equipment from accidental overpressure caused by regulator failure. Analysis frequently shows that in cases of high-flow regulator failure, the downstream pressure may rise significantly above the set pressure of the relief valve. This is due to limited flow capacity of the relief valve. A different regulator or relief valve may need to be selected. A more economical solution to this problem is to use an RFO to limit the maximum system flow to acceptable limits within the flow capacity of the relief valve, thereby enhancing the overpressure protection of laboratory equipment. An RFO can also be used to limit the uncontrolled release of system fluid (gas or liquid) upon component or line failure. As an example, potential asphyxiation hazards resultant from the release of large volumes of inert gas from a 'house' nitrogen system can be controlled by the use of an RFO. This report describes a versatile new Sandia-designed RFO available from the Swagelok Company and specifies the gas flow characteristics of this device. Two sizes, 0.010 and 0.020 inch diameter RFOs are available. These sizes will allow enhanced safety for many common applications. This new RFO design are now commercially available and provide advantages over existing RFOs: a high pressure rating (6600 psig); flow through the RFO is equal for either forward or reverse directions; they minimize the potential for leakage by incorporating the highest quality threaded connections; and can enhance the safety of pressure systems.

Shrouf, Roger D.

2003-06-01T23:59:59.000Z

231

SHORT-TUBE SUBCRITICAL FLOW Enerag Division  

E-Print Network [OSTI]

#12;SHORT-TUBE SUBCRITICAL FLOW Y. C. Mei Enerag Division Oak Ridge National Laboratory Oak Ridge-tube subcritical flow. For short tubes used as refrigerant expansion devices, the orifice model is found inadequate-TUBE SUBCRITICAL FLOW INTRODUCTION Much theoretical and experimental work regarding short tube fluid flow has

Oak Ridge National Laboratory

232

Microbial Adhesion in Flow Displacement Systems  

Science Journals Connector (OSTI)

...surface in flow displacement systems...in a flow displacement system contributes...substratum surface, is the...is the contact angle between...established parabolic flow between parallel plates. FIG. 9...more than half the length...and right: After addition...rectangular flow displacement systems Configuration...liquid surface tension...degrees) , contact angle between...wall shear stress (N m2...

Henk J. Busscher; Henny C. van der Mei

2006-01-01T23:59:59.000Z

233

Stochastic models for turbulent reacting flows  

SciTech Connect (OSTI)

The goal of this program is to develop and apply stochastic models of various processes occurring within turbulent reacting flows in order to identify the fundamental mechanisms governing these flows, to support experimental studies of these flows, and to further the development of comprehensive turbulent reacting flow models.

Kerstein, A. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

234

Mach flow angularity probes for scramjet engine flow path diagnostics  

SciTech Connect (OSTI)

Mach-flow angularity (MFA) probes were developed for use in scramjet flow path probe rakes. Prototype probes were fabricated to demonstrate the assembly processes (numerical control machining, furnace brazing, and electron beam welding). Tests of prototype probes confirmed the thermal durability margins and life cycle. Selected probes were calibrated in air at Mach numbers from 1.75 to 6.0. Acceptance criteria for the production probes stressed thermal durability and pressure (and, consequently, Mach number) measurement quality. This new water-cooled MFA probe has 0.397-cm shaft diameter and is capable of withstanding heat fluxes of 2.724 kW/sq cm.

Jalbert, P.A.; Hiers, R.S. Jr. [Sverdrup Technology, Inc., Arnold AFS, TN (United States)

1993-12-31T23:59:59.000Z

235

Renormalization Group and the Ricci flow  

E-Print Network [OSTI]

We discuss from a geometric point of view the connection between the renormalization group flow for non--linear sigma models and the Ricci flow. This offers new perspectives in providing a geometrical landscape for 2D quantum field theories. In particular we argue that the structure of Ricci flow singularities suggests a natural way for extending, beyond the weak coupling regime, the embedding of the Ricci flow into the renormalization group flow.

Mauro Carfora

2010-01-20T23:59:59.000Z

236

Mirrored serpentine flow channels for fuel cell  

DOE Patents [OSTI]

A PEM fuel cell having serpentine flow field channels wherein the input/inlet legs of each channel border the input/inlet legs of the next adjacent channels in the same flow field, and the output/exit legs of each channel border the output/exit legs of the next adjacent channels in the same flow field. The serpentine fuel flow channels may be longer, and may contain more medial legs, than the serpentine oxidant flow channels.

Rock, Jeffrey Allan (Rochester, NY)

2000-08-08T23:59:59.000Z

237

11 - Knowledge Flow in Universities  

Science Journals Connector (OSTI)

In this chapter, a typical American university is chosen as a model for the quantitative analysis for the flow of knowledge in a reasonably well-defined academic setting. Knowledge flow assumes quantifiable patterns and much like the flow and retention of rain water over a given terrain of land; the quality (of teaching) and quantity (number of credit hours) of knowledge retained by students is estimated on a qualitative and quantitative basis. The model presented in this chapter is entirely generic. It can be applied in any center of learning and during any period of training, residency in limited time frame, or even to the evolution of species as they gain survival skills, and build their knowledge potential to survive, another generation, calamity, meteor fall, a catastrophic disaster, or a global nuclear fall-out. Though the probability of outcome is not accurately known, it is still bounded by confidence limits.

Syed V. Ahamed

2014-01-01T23:59:59.000Z

238

Pressure compensated flow control valve  

DOE Patents [OSTI]

The invention is an air flow control valve which is capable of maintaining a constant flow at the outlet despite changes in the inlet or outlet pressure. The device consists of a shell assembly with an inlet chamber and outlet chamber separated by a separation plate. The chambers are connected by an orifice. Also located within the inlet chamber is a port controller assembly. The port controller assembly consists of a differential pressure plate and port cap affixed thereon. The cap is able to slide in and out of the orifice separating the inlet and outlet chambers. When the pressure differential is sufficient, the differential pressure plate rises or falls to maintain a constant air flow. Movement of the port controller assembly does not require the use of seals, diaphragms, tight tolerances, bushings, bearings, hinges, guides, or lubricants.

Minteer, Daniel J. (West Richland, WA)

1999-01-01T23:59:59.000Z

239

Flow optimization in diving helmets  

SciTech Connect (OSTI)

Improved carbon dioxide transport from the annular space between the head and helmet is necessary to reduce fresh gas flow and associated noise. This paper gives an overview of new techniques for investigating this transport, and for optimizing helmet flow to remove CO{sub 2}. An analytical model predicts inhaled carbon dioxide fraction in terms of helmet and respiration characteristics. Fundamental behavior over a wide range of helmet parameters is computed. An experimental model uses Reynolds scaling with water and dye to simulate fresh gas and carbon dioxide respectively. The water/dye model supports measurement of inhaled dye concentration, and flow visualization. Detailed behavior is investigated for one helmet with air/CO{sub 2} and water/dye experiments. Results support validity of the analytic and water models, provide new insight to CO{sub 2} transport mechanisms, and suggest directions for optimizing helmet design.

Camperman, J.M. [Naval Surface Warfare Center, Panama City, FL (United States). Coastal Systems Station; Tennant, J.S. [Florida Atlantic Univ., Boca Raton, FL (United States). Ocean Engineering Dept.

1996-09-01T23:59:59.000Z

240

Rheo-optical determination of flow birefringence and flow dichroism with the pulsed laser method  

E-Print Network [OSTI]

Rheo-optical determination of flow birefringence and flow dichroism with the pulsed laser method online 29 August 2006 Rheo-optical measurements of the flow birefringence, flow dichroism systems under flow. However, the standard setup of an optical train, using phase modulation for the rheo-optical

Note: This page contains sample records for the topic "basaltic lava flows" 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

Nuclear reactor downcomer flow deflector  

DOE Patents [OSTI]

A nuclear reactor having a coolant flow deflector secured to a reactor core barrel in line with a coolant inlet nozzle. The flow deflector redirects incoming coolant down an annulus between the core barrel and the reactor vessel. The deflector has a main body with a front side facing the fluid inlet nozzle and a rear side facing the core barrel. The rear side of the main body has at least one protrusion secured to the core barrel so that a gap exists between the rear side of the main body adjacent the protrusion and the core barrel. Preferably, the protrusion is a relief that circumscribes the rear side of the main body.

Gilmore, Charles B. (Greensburg, PA); Altman, David A. (Pittsburgh, PA); Singleton, Norman R. (Murrysville, PA)

2011-02-15T23:59:59.000Z

242

Dynamo action in flows with  

E-Print Network [OSTI]

Dynamo action in flows with cat's eyes A l i c e C o u r v o i s i e r A n d r e w G i l b e r t Y of k for R = 500 and the flow (2.4) and (2.5). nts k = 2.5 and k = 5 are highlighted. Magnetic field). In (a) k = 2.5 and we have 0.5 max Bz (with max Bz 0.6 max |B|), and in (b) k = 5 and the levels .65 max

Li, Yi

243

Comments on "Microscale flow visualization"  

E-Print Network [OSTI]

We make comments on the presentation of Sinton's paper (Microfluidics and Nanofluidics {\\bf 1}: 2, 2004) about the microscale flow visualization since the effects of the roughness along the microfabricated wall upon the current macroflow visualization methods could be significant and cannot be neglected in microdomain and even nanodomain.

A. Kwang-Hua Chu

2005-10-22T23:59:59.000Z

244

Rinse trough with improved flow  

DOE Patents [OSTI]

Novel rinse troughs accomplish thorough uniform rinsing. The troughs are suitable for one or more essentially planar objects having substantially the same shape. The troughs ensure that each surface is rinsed uniformly. The new troughs provide uniform rinse fluid flow over the objects` surfaces to accomplish a more thorough rinse than prior art troughs. 5 figs.

O`Hern, T.J.; Grasser, T.W.

1998-08-11T23:59:59.000Z

245

Shear instabilities in granular flows  

Science Journals Connector (OSTI)

... of sizes were also tested, but these never produced interfacial waves under any conditions. Roughening either side wall by attaching sandpaper had a minimal effect on the flow, indicating ... to 28°. (The shear itself varied by less than 20%.) Second, we roughened the last 10?cm of the chute bottom, thus artificially retarding downstream particles and ...

David J. Goldfarb; Benjamin J. Glasser; Troy Shinbrot

2002-01-17T23:59:59.000Z

246

Superconducting flux flow digital circuits  

DOE Patents [OSTI]

A NOR/inverter logic gate circuit and a flip flop circuit implemented with superconducting flux flow transistors (SFFTs) are disclosed. Both circuits comprise two SFFTs with feedback lines. They have extremely low power dissipation, very high switching speeds, and the ability to interface between Josephson junction superconductor circuits and conventional microelectronics. 8 figs.

Hietala, V.M.; Martens, J.S.; Zipperian, T.E.

1995-02-14T23:59:59.000Z

247

Data Flow Testing Neelam Gupta  

E-Print Network [OSTI]

Data Flow Testing Neelam Gupta The University of Arizona, Tucson, Arizona and Rajiv Gupta The University of Arizona, Tucson, Arizona Software testing techniques are designed to execute a program on a set of test cases that provide suÃ?cient coverage under some speci#12;c well-de#12;ned test coverage criterion

Gupta, Rajiv

248

Hydroplaning of subaqueous debris flows  

Science Journals Connector (OSTI)

...contiguous deposit of a subaqueous flow may be fringed by discrete parcels of debris that appear to have separated from the toe of the...can be introduced at the start of the channel either from a conveyor belt or from a head tank. With the head-tank configuration...

249

Thermodynamics of urban population flows  

Science Journals Connector (OSTI)

Orderliness, reflected via mathematical laws, is encountered in different frameworks involving social groups. Here we show that a thermodynamics can be constructed that macroscopically describes urban population flows. Microscopic dynamic equations and simulations with random walkers underlie the macroscopic approach. Our results might be regarded, via suitable analogies, as a step towards building an explicit social thermodynamics.

A. Hernando and A. Plastino

2012-12-05T23:59:59.000Z

250

Superconducting flux flow digital circuits  

DOE Patents [OSTI]

A NOR/inverter logic gate circuit and a flip flop circuit implemented with superconducting flux flow transistors (SFFTs). Both circuits comprise two SFFTs with feedback lines. They have extremely low power dissipation, very high switching speeds, and the ability to interface between Josephson junction superconductor circuits and conventional microelectronics.

Hietala, Vincent M. (Placitas, NM); Martens, Jon S. (Sunnyvale, CA); Zipperian, Thomas E. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

251

Sedimentation Field Flow Fractionation: Applications  

Science Journals Connector (OSTI)

...FIELD-FLOW FRACTIONATION OF ALKALI-LIBERATED NUCLEAR POLYHEDROSIS-VIRUS FROM GYPSY-MOTH...FRACTIONATION TO RADIOACTIVE-WASTE DISPOSAL, NUCLEAR TECHNOLOGY 51 : 147 ( 1980 ). SOBER...perThe SFFF separation in Fig. 9a was ic dispersant moarbitrarily concluded shortly after...

J. J. Kirkland; W. W. Yau

1982-10-08T23:59:59.000Z

252

Effect of radial transport on compressor tip clearance flow structures and enhancement of stable flow range  

E-Print Network [OSTI]

The relation between tip clearance flow structure and axial compressor stall is interrogated via numerical simulations, to determine how casing treatment can result in improved flow range. Both geometry changes and flow ...

Nolan, Sean Patrick Rock

2005-01-01T23:59:59.000Z

253

A Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow...  

Open Energy Info (EERE)

Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow Measurements And Heat-Flow Estimates From The Uk Geothermal Catalogue Jump to: navigation, search OpenEI Reference...

254

Liquid metal Flow Meter - Final Report  

SciTech Connect (OSTI)

Measuring the flow of liquid metal presents serious challenges. Current commercially-available flow meters use ultrasonic, electromagnetic, and other technologies to measure flow, but are inadequate for liquid metal flow measurement because of the high temperatures required by most liquid metals. As a result of the reactivity and high temperatures of most liquid metals, corrosion and leakage become very serious safety concerns. The purpose of this project is to develop a flow meter for Lockheed Martin that measures the flow rate of molten metal in a conduit.

Andersen C, Hoogendoom S, Hudson B, Prince J, Teichert K, Wood J, Chase K

2007-01-30T23:59:59.000Z

255

Flow frictional characteristics of microencapsulated phase change material suspensions flowing through rectangular minichannels  

Science Journals Connector (OSTI)

An experimental investigation was conducted on the laminar flow frictional characteristics of suspensions with microencapsulated phase change material (MEPCM) in water flowing through rectangular...

Yu Rao; Frank Dammel; Peter Stephan…

2006-08-01T23:59:59.000Z

256

Late Jurassic extension in the Bisbee basin: Marine and volcanic strata of the Chiricahua Mountains, Arizona  

SciTech Connect (OSTI)

Upper Jurassic strata in the northeastern Chiricahua Mountains provide unambiguous stratigraphic and geographic links between the Chihuahua trough of north-central Mexico and the Bisbee basin of southeastern Arizona. Approximately 1,800 m of limestone, shale, and mafic volcanic rocks overlie the Glance Conglomerate and underlie fluvial redbeds of the Lower Cretaceous Morita Formation. Basal strata are alluvial-fan and sabkha deposits. A thick (150 m), ammonite-bearing black shale interval above the sabkha deposits indicates an abrupt increase of water depths; deepening was accompanied initially by emplacement of subaerial basalt flows and subsequently by deposition of basaltic tuff and pillow lava. Ammonites are present both below and above the tuff and indicate its exclusively subaqueous origin. Arkosic deltaic deposits above the tuff were derived from Precambrian rocks of the footwall block to the northeast. At least 200 m of mafic subaerial flows, previously regarded as mid-Tertiary, overlie the deltaic deposits. The existence of a depleted mantle source beneath the Bisbee basin at 150 Ma suggests a unique tectonic setting that combined backarc and Gulf of Mexico extension.

Lawton, T.F.; McMillan, N.J. (New Mexico State Univ., Las Cruces, NM (United States)); Cameron, K.L. (Univ. of California, Santa Cruz, CA (United States). Earth Sciences Board)

1993-04-01T23:59:59.000Z

257

A Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow Measurements  

Open Energy Info (EERE)

Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow Measurements Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow Measurements And Heat-Flow Estimates From The Uk Geothermal Catalogue Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow Measurements And Heat-Flow Estimates From The Uk Geothermal Catalogue Details Activities (0) Areas (0) Regions (0) Abstract: A comprehensive database of temperature, heat flow, thermal conductivity and geochemistry is the basis of geothermal modelling. The latest revision (1987) of the UK Geothermal Catalogue (UKGC) contains over 2600 temperatures at over 1150 sites and over 200 observations of heat flow. About 93% of the temperature data are from depths less than 2000 m and about 50% are Bottom Hole Temperatures (BHT). Heat-flow density

258

Numerical simulation of electrokinetically driven micro flows  

E-Print Network [OSTI]

Spectral element based numerical solvers are developed to simulate electrokinetically driven flows for micro-fluidic applications. Based on these numerical solvers, basic phenomena and devices for electrokinetic applications in micro and nano flows...

Hahm, Jungyoon

2005-11-01T23:59:59.000Z

259

Flow in Computer Hacking: A Model  

Science Journals Connector (OSTI)

In this study hackers’ motivation is investigated, using the flow paradigm. It was hypothesized that flow increases with the increase of hackers’ competence in the IT use. An on-line research was administered wit...

Alexander E. Voiskounsky; Olga V. Smyslova

2003-01-01T23:59:59.000Z

260

Analysis of oscillating flow cooled SMA actuator  

E-Print Network [OSTI]

literature, most of the cooling mechanisms involve unidirectional forced convection. This may not be the most effective method. Oscillating flow in a channel can sometimes enhance heat transfer over a unidirectional flow. One possible explanation...

Pachalla Seshadri, Rajagopal

2005-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

A quasionedimensional approach for hypersonic stagnationpoint flows  

E-Print Network [OSTI]

A quasi­onedimensional approach for hypersonic stagnation­point flows Arno Klomfass 1 Lehr­ und An approximate method for the efficient calculation of stagnation streamline quantities in hypersonic flows about

262

GUI for Hypersonic flow solver Master Project  

E-Print Network [OSTI]

GUI for Hypersonic flow solver Master Project Student : Enrique Guzman concerns the design of a GUI for commanding hypersonic flow applications using CFD techniques, as well as its potential applications. These problems are quite complex, since the called hypersonic regime

Diggavi, Suhas

263

Information Flow in Ensemble Weather Predictions  

Science Journals Connector (OSTI)

In a weather prediction, information flows from the initial conditions to a later prediction. The uncertainty in the initial conditions implies that such a flow should be quantified with tools from probability theory. Using several recent ...

Richard Kleeman

2007-03-01T23:59:59.000Z

264

Definition: Flow Test | Open Energy Information  

Open Energy Info (EERE)

Flow Test Flow tests are typically conducted shortly after a well has been drilled to test its productivity. The well is opened and fluids are released, the volume of fluids...

265

Floating Robots Track Water Flow With Smartphones  

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

Floating Robots Track Water Flow, Stream Data via Smartphones Floating Robots Track Water Flow, Stream Data via Smartphones May 9, 2012 | Tags: Carver Jon Bashor, Jbashor@lbl.gov,...

266

Decentralized information flow control on a cluster  

E-Print Network [OSTI]

Information flow control security models can prevent programs from divulging sensitive information in unexpected ways. There has been significant work on tracking information flow between processes in the same computer at ...

Cliffer, Natan Tsvi Cohen

2007-01-01T23:59:59.000Z

267

Electromagnetically Induced Flows Michiel de Reus  

E-Print Network [OSTI]

Electromagnetically Induced Flows in Water Michiel de Reus 8 maart 2013 () Electromagnetically Conclusion and future research () Electromagnetically Induced Flows 2 / 56 #12;1 Introduction 2 Maxwell Navier Stokes equations 5 Simulations 6 Conclusion and future research () Electromagnetically Induced

Vuik, Kees

268

Elliptic flow of heavy flavors  

E-Print Network [OSTI]

The propagation of charm and bottom quarks through a ellipsoidal domain of quark gluon plasma has been studied within the ambit of non-equilibrium statistical mechanics. Energy dissipation of heavy quarks by both radiative and collisional processes are taken in to account. The experimental data on the elliptic flow of the non-photonic electrons resulting from the semi-leptonic decays of hadrons containing heavy flavours has been reproduced with the same formalism that has been used earlier to reproduce the nuclear suppression factors. The elliptic flow of the non-photonic electron from heavy meson decays produced in nuclear collisions at LHC and low energy RHIC run have also been predicted.

Das, Santosh K

2010-01-01T23:59:59.000Z

269

Elliptic flow of heavy flavors  

E-Print Network [OSTI]

The propagation of charm and bottom quarks through an ellipsoidal domain of quark gluon plasma has been studied within the ambit of non-equilibrium statistical mechanics. Energy dissipation of heavy quarks by both radiative and collisional processes are taken in to account. The experimental data on the elliptic flow of the non-photonic electrons resulting from the semi-leptonic decays of hadrons containing heavy flavours has been reproduced with the same formalism that has been used earlier to reproduce the nuclear suppression factors. The elliptic flow of the non-photonic electron from heavy meson decays produced in nuclear collisions at LHC and low energy RHIC run have also been predicted.

Santosh K Das; Jan-e Alam

2010-08-16T23:59:59.000Z

270

Cascade redox flow battery systems  

DOE Patents [OSTI]

A reduction/oxidation ("redox") flow battery system includes a series of electrochemical cells arranged in a cascade, whereby liquid electrolyte reacts in a first electrochemical cell (or group of cells) before being directed into a second cell (or group of cells) where it reacts before being directed to subsequent cells. The cascade includes 2 to n stages, each stage having one or more electrochemical cells. During a charge reaction, electrolyte entering a first stage will have a lower state-of-charge than electrolyte entering the nth stage. In some embodiments, cell components and/or characteristics may be configured based on a state-of-charge of electrolytes expected at each cascade stage. Such engineered cascades provide redox flow battery systems with higher energy efficiency over a broader range of current density than prior art arrangements.

Horne, Craig R.; Kinoshita, Kim; Hickey, Darren B.; Sha, Jay E.; Bose, Deepak

2014-07-22T23:59:59.000Z

271

The Cotton tensor and the Ricci flow  

E-Print Network [OSTI]

We compute the evolution equation of the Cotton tensor under the Ricci flow of a three dimensional Riemannian manifold.

Mantegazza, Carlo

2012-01-01T23:59:59.000Z

272

Flow Imaging Using MRI: Quantification and Analysis  

E-Print Network [OSTI]

&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Jim Ji Committee Members, Andrew K. Chan Deepa Kundur Yoonsuck Choe Mary P. McDougall Head of Department, Costas N... Committee: Dr. Jim Ji A complex and challenging problem in flow study is to obtain quantitative flow information in opaque systems, for example, blood flow in biological systems and flow channels in chemical reactors. In this regard, MRI is superior...

Jiraraksopakun, Yuttapong

2010-07-14T23:59:59.000Z

273

A theory for radial jet reattachment flow  

E-Print Network [OSTI]

, the velocity profile and mass entrainment are given accordrng to Goertler's t. wo- dimensional free jet theory. His analysrs of a free jet also assumes that. the turbulent eddy viscosity is constant ar ross the jet. (6) For the case of laminar flow... of total jet momentum. Laminar jet flow is approximated using Schlichting's velocity profile, whereas turbulent flow calculations are made assuming Goertler's velocity profile. Momentum integral principles are applied to the flow at reattachment...

Hadden, Lynne Loise

2012-06-07T23:59:59.000Z

274

Anisotropic collective flow of a Lorentz gas  

E-Print Network [OSTI]

Analytical results for the anisotropic collective flow of a Lorentz gas of massless particles scattering on fixed centres are presented.

Nicolas Borghini; Clement Gombeaud

2011-06-30T23:59:59.000Z

275

Anisotropic Flow from RHIC to the LHC  

E-Print Network [OSTI]

Anisotropic flow is recognized as one of the main observables providing information on the early stage of a heavy-ion collision. At RHIC the large observed anisotropic flow and its successful description by ideal hydrodynamics is considered evidence for an early onset of thermalization and almost ideal fluid properties of the produced strongly coupled Quark Gluon Plasma. This write-up discusses some key RHIC anisotropic flow measurements and for anisotropic flow at the LHC some predictions.

Raimond Snellings

2006-10-05T23:59:59.000Z

276

Building up the elliptic flow: analytical insights  

E-Print Network [OSTI]

In this paper, we present a fully analytical description of the early-stage formation of elliptic flow in relativistic viscous hydrodynamics. We first construct an elliptic deformation of Gubser flow which is a boost invariant solution of the Navier-Stokes equation with a nontrivial transverse profile. We then analytically calculate the momentum anisotropy of the flow as a function of time and discuss the connection with the empirical formula by Bhalerao {\\it et al.} regarding the viscosity dependence of elliptic flow.

Yoshitaka Hatta; Bo-Wen Xiao

2014-05-08T23:59:59.000Z

277

Microgravity Flow Regime Transition Modeling  

E-Print Network [OSTI]

apparatus have been used in past flow regime mapping experiments such as Venturi, perforated pipe, annular, and t-junction mixers. The mixing apparatus used in a particular experiment determines the bubble size distribution at the inlet... pressure of 80 kPa was reported, however, the temperature was not. The orientation and location of the test section with respect to the aircraft are unknown. The mixing apparatus used in the experiment was a Venturi mixer. This data set does...

Shephard, Adam M.

2010-07-14T23:59:59.000Z

278

Countercurrent flow absorber and desorber  

DOE Patents [OSTI]

Countercurrent flow absorber and desorber devices are provided for use in absorption cycle refrigeration systems and thermal boosting systems. The devices have increased residence time and surface area resulting in improved heat and mass transfer characteristics. The apparatuses may be incorporated into open cycle thermal boosting systems in which steam serves both as the refrigerant vapor which is supplied to the absorber section and as the supply of heat to drive the desorber section of the system. 9 figs.

Wilkinson, W.H.

1984-10-16T23:59:59.000Z

279

NETL: Gasifipedia - Entrained Flow Gasifiers  

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

Entrained Flow Gasifiers Entrained Flow Gasifiers Uhde - Prenflo PRENFLO(tm) is a pressurized (>40 bar), entrained-flow gasification technology first demonstrated in the late 1980s, and currently offered by Uhde (Krupp Koppers merged with Uhde in 1997). Notably, PRENFLO(tm) is the gasification technology used at the world's largest solid feedstock-based gasifier at ELCOGAS's Puertollano IGCC plant in Spain (which is fueled with a 50%/50% mix of petcoke and coal). PRENFLO(tm) is offered in two varieties, the PRENFLO(tm) PSG (with steam generation) depicted in Figures 1 & 2, and PRENFLO(tm) PDQ (direct quench) as depicted in Figures 3 & 4. The gasifier conditions and feed characteristics are similar, but PRENFLO(tm) PSG includes an integrated waste heat boiler and uses compressed recirculated quench gas as illustrated in Figure 2, resulting in relatively low moisture raw syngas at relatively high exit temperature. PRENFLO(tm) PDQ uses direct quench, resulting in considerably lower raw syngas exit temperature (200-250°C) which is saturated. Uhde notes that PDQ has lower investment cost and shorter construction and supply schedule than PSG, though this would be at the performance expense of somewhat lower thermal efficiency and slightly higher concentration of CO2 in raw syngas.

280

Cyclotron resonance in plasma flow  

SciTech Connect (OSTI)

This paper is devoted to the mechanism of particle acceleration via resonant interaction with the electromagnetic circular wave propagating along the inhomogeneous background magnetic field in the presence of a plasma flow. We consider the system where the plasma flow velocity is large enough to change the direction of wave propagation in the rest frame. This system mimics a magnetic field configuration typical for inner structure of a quasi-parallel shock wave. We consider conditions of gyroresonant interaction when the force corresponding to an inhomogeneity of the background magnetic field is compensated by the Lorentz force of the wave-magnetic field. The wave-amplitude is assumed to be about 10% of the background magnetic field. We show that particles can gain energy if kv{sub sw}>?>kv{sub sw}??{sub c} where k is the wave number, v{sub sw} is a plasma flow velocity, and ? and ?{sub c} are the wave frequency and the particle gyrofrequency, respectively. This mechanism of acceleration resembles the gyrosurfing mechanism, but the effect of the electrostatic field is replaced by the effect of the magnetic field inhomogeneity.

Artemyev, A. V.; Agapitov, O. V.; Krasnoselskikh, V. V. [LPC2E/CNRS-University of Orleans, Orleans (France)] [LPC2E/CNRS-University of Orleans, Orleans (France)

2013-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Flow Duration Curve Load Duration Curve  

E-Print Network [OSTI]

and concentration data--select appropriate conversion factors 3. Develop Load Duration Curve 4. Plot observed data there has been no flow at this site #12;Gather daily flow rate data Load data into a spreasheet Sort largest, etc) Calculate percentage of days flow was exceeded: How do you estimate load with given data

282

A quasionedimensional approach for hypersonic stagnationpoint flows  

E-Print Network [OSTI]

A quasi­onedimensional approach for hypersonic stagnation­point flows Arno Klomfass 1 Lehr­ und An approximate method for the efficient calculation of stagnation streamline quantities in hypersonic flows about­conduction coefficient [W=mK] 2 Introduction The hypersonic flow about a spacecraft entering the atmosphere at orbital

283

Setup of Particle Image Velocimetry (PIV) in Hypersonic Flows.  

E-Print Network [OSTI]

??The accuracy of numerical methods in calculating the flow of backward facing steps in turbulent hypersonic flows is limited due to a lack of flow… (more)

Anwar, Moazzam

2008-01-01T23:59:59.000Z

284

Geothermal Heat Flow and Existing Geothermal Plants | Department...  

Energy Savers [EERE]

Geothermal Heat Flow and Existing Geothermal Plants Geothermal Heat Flow and Existing Geothermal Plants Geothermal Heat Flow and Existing Plants With plants in development. Click...

285

WHICH HYDRAULIC MODEL TO USE IN VERTICAL FLOW CONSTRUCTED WETLANDS?  

E-Print Network [OSTI]

WHICH HYDRAULIC MODEL TO USE IN VERTICAL FLOW CONSTRUCTED WETLANDS? Ania Morvannoua , Nicolas-equilibrium model, preferential flow path, vertical flow constructed wetlands INTRODUCTION Constructed wetlands (CWs

Paris-Sud XI, Université de

286

Chemical preconcentrator with integral thermal flow sensor  

DOE Patents [OSTI]

A chemical preconcentrator with integral thermal flow sensor can be used to accurately measure fluid flow rate in a microanalytical system. The thermal flow sensor can be operated in either constant temperature or constant power mode and variants thereof. The chemical preconcentrator with integral thermal flow sensor can be fabricated with the same MEMS technology as the rest of the microanlaytical system. Because of its low heat capacity, low-loss, and small size, the chemical preconcentrator with integral thermal flow sensor is fast and efficient enough to be used in battery-powered, portable microanalytical systems.

Manginell, Ronald P. (Albuquerque, NM); Frye-Mason, Gregory C. (Cedar Crest, NM)

2003-01-01T23:59:59.000Z

287

Self-regulating flow control device  

SciTech Connect (OSTI)

A variable, self-regulating valve having a hydraulic loss coefficient proportional to a positive exponential power of the flow rate. The device includes two objects in a flow channel and structure which assures that the distance between the two objects is an increasing function of the flow rate. The range of spacing between the objects is such that the hydraulic resistance of the valve is an increasing function of the distance between the two objects so that the desired hydraulic loss coefficient as a function of flow rate is obtained without variation in the flow area.

Humphreys, Duane A. (Pittsburgh, PA)

1984-01-01T23:59:59.000Z

288

Energy focusing in bubbly flows  

Science Journals Connector (OSTI)

Sonoluminescence cavitation damage at surfaces and cavitation in accelerating flows are realizations of spectacular levels of energy focusing in nature. In a resonant sound field a single trapped bubble of gas can focus the ambient sound energy by 12 orders of magnitude to generate a clocklike string of picosecond flashes of ultraviolet light. [Barber et al. ‘‘Defining the unknowns of sonoluminescence ’’ Phys. Rep. 281 65 (1977)]. In more complicated geometries a high level of sound leads to the formation of hemispherical bubbles attached to an exposed surface. These bubbles also emit light and in addition damage the surface. Measurements show that the pulsation of these bubbles maintains the hemispherical symmetry [Weninger et al. ‘‘Sonoluminescence from an isolated bubble on a solid surface ’’ Phys. Rev. E 56 6745 (1997)] thus raising the question as to whether cavitation damage is due to (micro)jets or imploding (hemispherical) shock waves. Finally flow through a Venturi tube generates a stream of bubbles which also emit subnanosecond flashes of light [F. B. Peterson and T. P. Anderson Phys. Fluids 10 874 (1967)]. Luminescence from an isolated trapped bubble in water seems to work well with any noble gas whereas luminescence from cavitating flows and surface bubbles is quite dependent on xenon [argon bubbles appear to give no light at all]. The width of the SL flash [Gompf et al. Phys. Rev. Lett. 79 1405 (1997) Hiller et al. Phys. Rev. Lett. 80 1090 (1998)] has been found to be independent of wavelength suggesting that light is emitted from a new high energy phase of matter?probably a cold dense nano?plasma. The key unknowns of SL are the size and temperature of the hot spot from which the light is emitted. Experiments aimed at measuring these quantities will be discussed. [Research supported by the NSF.] a)Present address: CMS Los Alamos National Laboratories Los Alamos NM. b)Present address: Lucent Technologies Murray Hill NJ.

Seth Putterman; Keith Weninger; Robert A. Hiller; Bradley P. Barber

1998-01-01T23:59:59.000Z

289

Enthalpy Diffusion in Multicomponent Flows  

SciTech Connect (OSTI)

The conclusions of this paper are: (1) Enthalpy diffusion preserves the second law. (2) Euler solvers will not produce correct temperatures in mixing regions. (3) Navier-Stokes solvers will only produce correct temperatures if q{sub d} is included. (4) Errors from neglecting enthalpy diffusion are most severe when differences in molecular weights are large. (5) In addition to temperature, enthalpy diffusion affects density, dilatation and other fields in subtle ways. (6) Reacting flow simulations that neglect the term are a dubious proposition. (7) Turbulence models for RANS and LES closures should preserve consistency between energy and species diffusion.

Cook, A W

2009-01-20T23:59:59.000Z

290

Entrainment measurements in annular flow  

SciTech Connect (OSTI)

Air/water and vapor/freon were utilized to scale and simulate annular two-phase flow for high pressure steam/water conditions. A unique vapor/liquid Freon loop was built to obtain the high pressure data. The results were compared with two correlations available in the open literature. The Ishii and Mishima dimensionless group was able to scale the data remarkably well even for vapor/liquid Freon. However, the correlation needs to be adjusted for high Weber numbers of the gas phase.

Assad, A.; Jan, C.; Bertodano, M. de [Purdue Univ., West Lafayette, IN (United States); Beus, S.G. [Bettis Atomic Power Lab., West Mifflin, PA (United States)

1997-07-01T23:59:59.000Z

291

A new precision flow calorimeter  

E-Print Network [OSTI]

differences. With no sample fluid flowing, a supply of electrical power is fed to the inner calorimeter. The reference fluid is evaporated with this electrical power and the thermo-syphon system is brought to controlled steady-state conditions of pressure... calorimeter is kept cooler than the inner calorimeter for reasons discussed in chapter 4. Thus the above mentioned procedure is essential to avoid condensation in Freon@-11 vapor lines. The thermo-syphon ensures a saturated Freon&-11 vapor phase in the top...

Johnson, Mark Gezer

1984-01-01T23:59:59.000Z

292

DYNAMIC MODELING STRATEGY FOR FLOW REGIME TRANSITION IN GAS-LIQUID TWO-PHASE FLOWS  

SciTech Connect (OSTI)

In modeling gas-liquid two-phase flows, the concept of flow regime has been used to characterize the global interfacial structure of the flows. Nearly all constitutive relations that provide closures to the interfacial transfers in two-phase flow models, such as the two-fluid model, are often flow regime dependent. Currently, the determination of the flow regimes is primarily based on flow regime maps or transition criteria, which are developed for steady-state, fully-developed flows and widely applied in nuclear reactor system safety analysis codes, such as RELAP5. As two-phase flows are observed to be dynamic in nature (fully-developed two-phase flows generally do not exist in real applications), it is of importance to model the flow regime transition dynamically for more accurate predictions of two-phase flows. The present work aims to develop a dynamic modeling strategy for determining flow regimes in gas-liquid two-phase flows through the introduction of interfacial area transport equations (IATEs) within the framework of a two-fluid model. The IATE is a transport equation that models the interfacial area concentration by considering the creation and destruction of the interfacial area, such as the fluid particle (bubble or liquid droplet) disintegration, boiling and evaporation; and fluid particle coalescence and condensation, respectively. For the flow regimes beyond bubbly flows, a two-group IATE has been proposed, in which bubbles are divided into two groups based on their size and shape (which are correlated), namely small bubbles and large bubbles. A preliminary approach to dynamically identifying the flow regimes is provided, in which discriminators are based on the predicted information, such as the void fraction and interfacial area concentration of small bubble and large bubble groups. This method is expected to be applied to computer codes to improve their predictive capabilities of gas-liquid two-phase flows, in particular for the applications in which flow regime transition occurs.

X. Wang; X. Sun; H. Zhao

2011-09-01T23:59:59.000Z

293

Potential Flow Calculations of Axisymmetric Ducted Wind Turbines  

E-Print Network [OSTI]

An incompressible potential-flow vortex method has been constructed to analyze the flow field of a ducted

Widnall, Sheila

2009-09-02T23:59:59.000Z

294

Flow shop scheduling with peak power consumption constraints  

E-Print Network [OSTI]

Mar 29, 2012 ... Flow shop scheduling with peak power consumption constraints ... Keywords: scheduling, flow shop, energy, peak power consumption, integer ...

K. Fang

2012-03-29T23:59:59.000Z

295

Heat flow on the southern Colorado Plateau  

Science Journals Connector (OSTI)

Heat-flow data from the study area in the southern Colorado Plateau indicate a pattern of local anomalies having relatively high heat flow superimposed on a regional, intermediate heat-flow setting. While many of the conventional heat-flow data are relatively shallow and may be perturbed by groundwater circulation, bottom-hole temperature data from two relatively deep petroleum exploration drill holes near the southern plateau periphery yield intermediate heat-flow estimates. The mean heat flow within the volcanically active Jemez zone does not appear to be significantly greater than the mean heat flow for the remainder of the study area. This is due to the presence of high heat-flow values outside the Jemez zone. Sites with relatively high heat flow located towards the plateau interior and away from recent volcanic activity of the Jemez zone may reflect magma intrusion and/or groundwater movement along crustal zones of weakness associated with Laramide deformation (monoclines). The heat-flow data are consistent with coal maturation data, which suggest that any regional post-Cretaceous thermal events that may be associated with the southern Plateau boundary have been initiated relatively recently, or are occurring at relatively great depths, or are occurring south of the Jemez lineament.

Jeffrie Minier; Marshall Reiter

1991-01-01T23:59:59.000Z

296

Preserving quality of service guarantees in spite of flow aggregation  

Science Journals Connector (OSTI)

We investigate how quality of service may be guaranteed to a flow of packets in the presence of flow aggregation. For efficiency, multiple flows, known as the constituent flows, are merged together resulting in a single aggregate flow. After the network ... Keywords: Flow aggregation, quality of service, real-time scheduling

Jorge Arturo Cobb

2002-02-01T23:59:59.000Z

297

Proximal bodies in hypersonic flow  

SciTech Connect (OSTI)

Hypersonic flows involving two or more bodies travelling in close proximity to one another are encountered in several important situations, both natural and man-made. The present work seeks to investigate one aspect of the resulting flow problem by exploring the forces experienced by a secondary body when it is within the domain of influence of a primary body travelling at hypersonic speeds. An analytical methodology based on the blast wave analogy is developed and used to predict the secondary force coefficients for simple geometries in both two and three dimensions. When the secondary body is entirely inside the primary shocked region, the nature of the lateral force coefficient is found to depend strongly on the relative size of the two bodies. For two spheres, the methodology predicts that the secondary body will experience an exclusively attractive lateral force if the secondary diameter is larger than one-sixth the primary diameter. The analytical results are compared with those from numerical simulations and reasonable agreement is observed if an appropriate normalization for the lateral displacement is used. Results from a series of experiments in the T5 hypervelocity shock tunnel are also presented and compared with perfect-gas numerical simulations, with good agreement. A new force-measurement technique for short-duration hypersonic facilities, enabling the experimental simulation of the proximal bodies problem, is described. This technique provides two independent means of measurement, and the agreement observed between the two gives a further degree of confidence in the results obtained.

Deiterding, Ralf [ORNL; Laurence, Stuart J [California Institute of Technology, Pasadena; Hornung, Hans G [California Institute of Technology, Pasadena

2007-01-01T23:59:59.000Z

298

Effect of a co?flowing annular outer flow on the flow and acoustics in a porous tube.  

Science Journals Connector (OSTI)

One of the most important aspects of flow in a gas turbine combustor is the cooling airflow introduced through the combustor liner. The co?flowing annular cooling air affects the flow and the acoustic field of the main combustor. A generic study is in progress to study the effect of a co?flowing annular outer flow on the flow and acoustics in a porous tube. This work is an idealization of the actual gas turbine combustor flow. The results generated here will be used to validate the computational codes currently being used by the gas turbine industry to calculate these flow fields. In the present experimental work a 6?in.?diam tube made out of perforated sheet is located coaxially in an 8?in.?diam outer tube. Airflows in the inner perforated tube as well as in the annular space between the two tubes. Detailed measurements of the turbulence structure using hot wire anemometry and of the acoustic field using microphonetransducers are being made. Effects of parameters such as porosity of the tube relative areas of annular space and cross section of inner tube and flow Reynolds number on the turbulence quantities and the acoustic field will be reported.

Sundar Ramamoorthy; Fariborz Khodabakhsh; Sastry Munukutla

1992-01-01T23:59:59.000Z

299

LLNL Energy Flow Charts | Open Energy Information  

Open Energy Info (EERE)

LLNL Energy Flow Charts LLNL Energy Flow Charts Jump to: navigation, search Tool Summary Name: LLNL Energy Flow Charts Agency/Company /Organization: Lawrence Livermore National Lab Sector: Energy Focus Area: Renewable Energy Topics: Pathways analysis References: LLNL Energy Flow Charts [1] Decision makers have long recognized the importance of visualizing energy and material flows in a way that distinguishes between resources, transformations and services. Research priorities can be defined in terms of changes to the flows, and the consequences of policy or technology shifts can be traced both upstream and downstream. The usefulness of this top-down view is limited by the level of detail that can be conveyed in a single image. We use two techniques to balance information content with readability. First we employe visualization

300

CFD analysis of laminar oscillating flows  

SciTech Connect (OSTI)

This paper describes a numerical simulations of oscillating flow in a constricted duct and compares the results with experimental and theoretical data. The numerical simulations were performed using the computational fluid dynamics (CFD) code CFX4.2. The numerical model simulates an experimental oscillating flow facility that was designed to test the properties and characteristics of oscillating flow in tapered ducts, also known as jet pumps. Jet pumps are useful devices in thermoacoustic machinery because they produce a secondary pressure that can counteract an unwanted effect called streaming, and significantly enhance engine efficiency. The simulations revealed that CFX could accurately model velocity, shear stress and pressure variations in laminar oscillating flow. The numerical results were compared to experimental data and theoretical predictions with varying success. The least accurate numerical results were obtained when laminar flow approached transition to turbulent flow.

Booten, C. W. Charles W.); Konecni, S. (Snezana); Smith, B. L. (Barton L.); Martin, R. A. (Richard A.)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Multiphase Flow in Geometrically Simple Fracture Intersections  

SciTech Connect (OSTI)

A two-dimensional lattice Boltzmann (LB) model with fluid-fluid and solid-fluid interaction potentials was used to Study gravity-driven flow in geometrically simple fracture intersections. simulated scenarios included fluid dripping from a fracture aperture, two-phase flow through intersecting fractures and thin-filin flow oil smooth and undulating solid surfaces. Qualitative comparisons with recently published experimental findings indicate that for these scenarios the LB model captured the underlying physics reasonably well.

Hakan Basagaoglu; Paul Meakin; Sauro Succi; Timothy R. Ginn

2006-03-01T23:59:59.000Z

302

Multiphase flow in geometrically simple fracture intersection  

SciTech Connect (OSTI)

A two-dimensional lattice Boltzmann (LB) model with fluid-fluid and solid-fluid interaction potentials was used to study gravity-driven flow in geometrically simple fracture intersections. Simulated scenarios included fluid dripping from a fracture aperture, two-phse flow through intersecting fractures, and thin-film flow on smooth and undulating solid surfaces. Qualititative comparisons with recently published experimental findings indicate that for these scenarios the LB model captured the underlying physics reasonably well.

H. Basagaoglu; P. Meakin; M. Mathew

2006-03-01T23:59:59.000Z

303

Dissipation flow-frames: particle, energy, thermometer  

E-Print Network [OSTI]

We associate the following physical co-mover conditions of to different frame choices: i) Eckart: particle flow, ii) Landau-Lifshitz: energy flow, iii) J\\"uttner: moving thermometer frame. The role of fixing a flow-frame is analysed with respect to local equilibrium concentrating on dissipative currents and forces in single component relativistic fluids. The special role of a "J\\"uttner frame" is explored and contrasted to the more common Eckart and Landau-Lifshitz choices.

Ván, P

2013-01-01T23:59:59.000Z

304

Dissipation flow-frames: particle, energy, thermometer  

E-Print Network [OSTI]

We associate the following physical co-mover conditions of to different frame choices: i) Eckart: particle flow, ii) Landau-Lifshitz: energy flow, iii) J\\"uttner: moving thermometer frame. The role of fixing a flow-frame is analysed with respect to local equilibrium concentrating on dissipative currents and forces in single component relativistic fluids. The special role of a "J\\"uttner frame" is explored and contrasted to the more common Eckart and Landau-Lifshitz choices.

P. Ván; T. S. Biró

2013-05-14T23:59:59.000Z

305

Theoretical uncertainty of orifice flow measurement  

SciTech Connect (OSTI)

Orifice meters are the most common meters used for fluid flow measurement, especially for measuring hydrocarbons. Meters are rugged, mechanically simple, and well suited for field use under extreme weather conditions. Because of their long history of use and dominance in the fluid flow measurement, their designs, installation requirements, and equations for flow rate calculation have been standardized by different organizations in the United States and internationally. These standards provide the guideline for the users to achieve accurate flow measurement. and minimize measurement uncertainty. This paper discusses different factors that contribute to the measurement inaccuracy and provide an awareness to minimize or eliminate these errors. Many factors which influence the overall measurement uncertainty are associated with the orifice meter application. Major contributors to measurement uncertainty include the predictability of flow profile, fluid properties at flowing condition, precision of empirical equation for discharge coefficient, manufacturing tolerances in meter components, and the uncertainty associated with secondary devices monitoring the static line pressure, differential pressure across the orifice plate, flowing temperature, etc. Major factors contributing to the measurement uncertainty for a thin, concentric, square-edged orifice flowmeter are as follows: (a) Tolerances in prediction of coefficient of discharge, (b) Predictability in defining the physical properties of the flowing fluid, (c) Fluid flow condition, (d) Construction tolerances in meter components, (e) Uncertainty of secondary devices/instrumentation, and (f) Data reduction and computation. Different factors under each of the above areas are discussed with precautionary measures and installation procedures to minimize or eliminate measurement uncertainty.

Husain, Z.D. [Daniel Flow Products, Inc., Houston, TX (United States)

1995-12-01T23:59:59.000Z

306

The Boussinesq approximation in rapidly rotating flows  

E-Print Network [OSTI]

In the classical formulation of the Boussinesq approximation centrifugal buoyancy effects related to differential rotation, as well as strong vortices in the flow, are neglected. However, these may play an important role in rapidly rotating flows, such as in astrophysical and geophysical applications, and also in turbulent convection. We here provide a straightforward approach resulting in a Boussinesq-type approximation that consistently accounts for centrifugal effects. We further compare our new approach to the classical one in fluid flows confined between two differentially heated and rotating cylinders. The results justify the need of using the proposed approximation in rapidly rotating flows.

Lopez, Jose M; Avila, Marc

2013-01-01T23:59:59.000Z

307

Sandia National Laboratories: power flow control system  

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

power flow control system ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration, Energy, Energy Surety, Facilities,...

308

Flow visualisation in inclined louvered fins  

SciTech Connect (OSTI)

In this study the flow within an interrupted fin design, the inclined louvered fin, is investigated experimentally through visualisation. The inclined louvered fin is a hybrid of the offset strip fin and standard louvered fin, aimed at improved performance at low Reynolds numbers for compact heat exchangers. The flow behaviour is studied in six geometrically different configurations over a range of Reynolds numbers and quantified using the concept of 'fin angle alignment factor'. The transition from steady laminar to unsteady flow was studied in detail. The fin geometry had a very large impact on the transitional flow behaviour, especially on vortex shedding. (author)

T'Joen, C.; De Paepe, M. [Department of Flow, Heat and Combustion Mechanics, Ghent University-UGent, Sint-Pietersnieuwstraat 41, 9000 Gent (Belgium); Jacobi, A. [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 West Green Street, Urbana, IL 61801 (United States)

2009-04-15T23:59:59.000Z

309

Measurement of thermodynamics using gradient flow  

E-Print Network [OSTI]

We analyze bulk thermodynamics and correlation functions of the energy-momentum tensor in pure Yang-Mills gauge theory using the energy-momentum tensor defined by the gradient flow and small flow time expansion. Our results on thermodynamic observables are consistent with those obtained by the conventional integral method. The analysis of the correlation function of total energy supports the energy conservation. It is also addressed that these analyses with gradient flow require less statistics compared with the previous methods. All these results suggest that the energy-momentum tensor can be successfully defined and observed on the lattice with moderate numerical costs with the gradient flow.

Masakiyo Kitazawa; Masayuki Asakawa; Tetsuo Hatsuda; Takumi Iritani; Etsuko Itou; Hiroshi Suzuki

2014-12-15T23:59:59.000Z

310

Fractal Networks Explain Regional Myocardial Flow Heterogeneity  

Science Journals Connector (OSTI)

Regional myocardial blood flow is very heterogeneous. This has been found by injection of radioactively labeled microspheres, or the “molecular microsphere” iododesmethylimipramine, and measuring the depositio...

Johannes H. G. M. van Beek; James B. Bassingthwaighte…

1989-01-01T23:59:59.000Z

311

Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling...  

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

Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling using KH-ACT Primary...

312

Fluid Gravity Engineering Rocket motor flow analysis  

E-Print Network [OSTI]

Fluid Gravity Engineering Capability · Rocket motor flow analysis -Internal (performance) -External young scientists/engineers Fluid Gravity Engineering Ltd #12;

Anand, Mahesh

313

Fast flow phenomena in a toroidal plasma  

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

apparatus. The main body of the paper is a description of the experimental phenomenology of flow and locking, which is discussed in the dynamical context of the torque...

314

Revised age for Midway volcano, Hawaiian volcanic chain  

Science Journals Connector (OSTI)

New conventional K-Ar,40Ar/39Ar, and petrochemical data on alkalic basalt pebbles from the basalt conglomerate overlying tholeiitic flows in the Midway drill hole show that Midway evolved past the tholeiitic shield-building stage and erupted lavas of the alkalic suite27.0 ± 0.6m.y. ago. The data also show that previously published conventional K-Ar ages on altered samples of tholeiite are too young by about 9 m.y. These results remove a significant anomaly in the age-distance relationships of the Hawaiian chain and obviate the need for large changes in either the rate of rotation of the Pacific plate about the Hawaiian pole or the motion of the plate relative to the Hawaiian hot spot since the time of formation of the Hawaiian-Emperor bend. All of the age data along the Hawaiian chain are now reasonably consistent with an average rate of volcanic propagation of 8.0 cm/yr and with 0.83°/m.y. of angular rotation about the Hawaiian pole.

G. Brent Dalrymple; David A. Clague; Marvin A. Lanphere

1977-01-01T23:59:59.000Z

315

NETL: Gasifipedia - Entrained Flow Gasifiers  

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

Siemens Gasifier Siemens Gasifier (source: Siemens) Siemens Gasifiers Siemens gasification technology was originally developed by Deutsches Brennstoffinstitut (DBI) in Freiberg, Germany for the gasification of pulverized local brown coal and other solid feedstocks in 1975. The Noell group acquired the technology in 1991 and developed it further to handle liquid residues and wastes. The gasifier also operated under the name of Babcock Borsig and Future Energy before being acquired by Siemens in 2006. Operation The Siemens gasifier is a dry-feed, pressurized, entrained-flow reactor, which can be supplied with either a refractory lining for low ash feedstocks or with a cooling screen in the gasification section of the gasifier. The cooling screen consists of a gas-tight membrane wall

316

Combustion synthesis continuous flow reactor  

DOE Patents [OSTI]

The present invention is a reactor for combustion synthesis of inorganic powders. The reactor includes a reaction vessel having a length and a first end and a second end. The reaction vessel further has a solution inlet and a carrier gas inlet. The reactor further has a heater for heating both the solution and the carrier gas. In a preferred embodiment, the reaction vessel is heated and the solution is in contact with the heated reaction vessel. It is further preferred that the reaction vessel be cylindrical and that the carrier gas is introduced tangentially into the reaction vessel so that the solution flows helically along the interior wall of the reaction vessel. As the solution evaporates and combustion produces inorganic material powder, the carrier gas entrains the powder and carries it out of the reactor.

Maupin, Gary D. (Richland, WA); Chick, Lawrence A. (West Richland, WA); Kurosky, Randal P. (Maple Valley, WA)

1998-01-01T23:59:59.000Z

317

Thermodynamics with Continuous Information Flow  

Science Journals Connector (OSTI)

We provide a unified thermodynamic formalism describing information transfers in autonomous as well as nonautonomous systems described by stochastic thermodynamics. We demonstrate how information is continuously generated in an auxiliary system and then transferred to a relevant system that can utilize it to fuel otherwise impossible processes. Indeed, while the joint system satisfies the second law, the entropy balance for the relevant system is modified by an information term related to the mutual information rate between the two systems. We show that many important results previously derived for nonautonomous Maxwell demons can be recovered from our formalism and use a cycle decomposition to analyze the continuous information flow in autonomous systems operating at a steady state. A model system is used to illustrate our findings.

Jordan M. Horowitz and Massimiliano Esposito

2014-07-28T23:59:59.000Z

318

Renormalization flows in complex networks  

Science Journals Connector (OSTI)

Complex networks have acquired a great popularity in recent years, since the graph representation of many natural, social, and technological systems is often very helpful to characterize and model their phenomenology. Additionally, the mathematical tools of statistical physics have proven to be particularly suitable for studying and understanding complex networks. Nevertheless, an important obstacle to this theoretical approach is still represented by the difficulties to draw parallelisms between network science and more traditional aspects of statistical physics. In this paper, we explore the relation between complex networks and a well known topic of statistical physics: renormalization. A general method to analyze renormalization flows of complex networks is introduced. The method can be applied to study any suitable renormalization transformation. Finite-size scaling can be performed on computer-generated networks in order to classify them in universality classes. We also present applications of the method on real networks.

Filippo Radicchi; Alain Barrat; Santo Fortunato; José J. Ramasco

2009-02-06T23:59:59.000Z

319

Flow-induced vibration: 1992  

SciTech Connect (OSTI)

A joint program on flow-induced vibration (FIV) as established in July 1988 between Taiwan Power Company (Taipower or TPC) and ANL. The main objectives of the program are to provide a technology transfer program on FIV for Taipower staff and to assist Taipower with various aspects of FIV including evaluation of reports and proposals, review of designs, resolution of design issues, recommendation for design modifications, and selected research studies. During the first two years, the following tasks were accomplished: A technology transfer program on FIV was completed and key Taipower staff members were prepared to handle future problems in the subject area. The modified component cooling water (CCW) heat exchangers were assessed and the basis for a license from the Taiwan Atomic Energy Council (AEC) was established. The seismic reanalysis of Chin Shan spent-fuel racks was assessed and a report was submitted to the Taiwan AEC. Fluid/structure interaction activities were coordinated and provided a list of potential bidders for a fluid transient project and related publications and a recommendation for purchasing technical data on fluid coupling. Flow-induced vibration of tube arrays was reviewed and the needs of Taipower in the area of fluid/structure interaction were identified as were the procedures necessary for Taipower to accomplish its goals. A computer program, ARRAY, was established to compute the added-mass matrices for tube arrays. Taipower expressed interest in extending the joint program so that ANL could provide continuing assistance. The program was extended for several years (May 1, 1991, to June 30, 1994). Work from May 1, 1991, through June 30, 1992, summarized in this report, included technology transfer, assessment of sensing line and valve vibrations, literature survey, and tests on motion-dependent fluid forces acting on tube arrays in crossflow.

Chen, S.S.

1992-09-01T23:59:59.000Z

320

Laser Sheet Light Flow Visualization For Evaluating Room Air Flows From  

E-Print Network [OSTI]

LBNL-56483 Laser Sheet Light Flow Visualization For Evaluating Room Air Flows From Registers Iain S using a Planar Laser-Induced Fluorescence (PLIF) measurement technique. Water marked with fluorescent

Note: This page contains sample records for the topic "basaltic lava flows" 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

Groundwater abstraction impacts on spring flow and base flow in the Hillsborough River Basin, Florida, USA  

Science Journals Connector (OSTI)

Groundwater abstraction has resulted in spring flow and groundwater base-flow declines in the Hillsborough River system of central Florida, USA. These declines have resulted in reduction of inflows to the Tamp...

Kenneth A. Weber; Robert G. Perry

2006-11-01T23:59:59.000Z

322

Numerical analysis of the flow field inside an entrained-flow gasifier  

Science Journals Connector (OSTI)

The flow field of an entrained-flow gasifier was numerically simulated to describe coal gasification ... inlet velocity, extension in burner length and gasifier geometry. The calculation results showed that the ....

Young Chan Choi; Xiang Yang Li; Tae Jun Park…

2001-05-01T23:59:59.000Z

323

Site-Scale Saturated Zone Flow Model  

SciTech Connect (OSTI)

The purpose of this model report is to document the components of the site-scale saturated-zone flow model at Yucca Mountain, Nevada, in accordance with administrative procedure (AP)-SIII.lOQ, ''Models''. This report provides validation and confidence in the flow model that was developed for site recommendation (SR) and will be used to provide flow fields in support of the Total Systems Performance Assessment (TSPA) for the License Application. The output from this report provides the flow model used in the ''Site-Scale Saturated Zone Transport'', MDL-NBS-HS-000010 Rev 01 (BSC 2003 [162419]). The Site-Scale Saturated Zone Transport model then provides output to the SZ Transport Abstraction Model (BSC 2003 [164870]). In particular, the output from the SZ site-scale flow model is used to simulate the groundwater flow pathways and radionuclide transport to the accessible environment for use in the TSPA calculations. Since the development and calibration of the saturated-zone flow model, more data have been gathered for use in model validation and confidence building, including new water-level data from Nye County wells, single- and multiple-well hydraulic testing data, and new hydrochemistry data. In addition, a new hydrogeologic framework model (HFM), which incorporates Nye County wells lithology, also provides geologic data for corroboration and confidence in the flow model. The intended use of this work is to provide a flow model that generates flow fields to simulate radionuclide transport in saturated porous rock and alluvium under natural or forced gradient flow conditions. The flow model simulations are completed using the three-dimensional (3-D), finite-element, flow, heat, and transport computer code, FEHM Version (V) 2.20 (software tracking number (STN): 10086-2.20-00; LANL 2003 [161725]). Concurrently, process-level transport model and methodology for calculating radionuclide transport in the saturated zone at Yucca Mountain using FEHM V 2.20 are being carried out in the model report, ''Site-Scale Saturated Zone Transport'', MDL-NBS-HS-000010 Rev 01 (BSC 2003 [162419]). The velocity fields are calculated by the flow model, described herein, independent of the transport processes, and are then used as inputs to the transport model. Justification for this abstraction is presented in the model report, ''Saturated Zone Flow and Transport Model Abstraction'', MDL-NBS-HS-000021 (BSC 2003 [164870]).

G. Zyvoloski

2003-12-17T23:59:59.000Z

324

The effects between two slotted plate flow meter under single, two, three components flow condition  

E-Print Network [OSTI]

THE INTERACTION BETWEEN A TWO SLOTTED PLATE FLOW METER UNDER ONE, TWO, OR THREE COMPONENT FLOW CONDITIONS A Thesis by SANG HYUN PARK Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2004 Major Subject: Mechanical Engineering THE INTERACTION BETWEEN A TWO SLOTTED PLATE FLOW METER UNDER ONE, TWO, OR THREE COMPONENT FLOW...

Park, Sang Hyan

2005-02-17T23:59:59.000Z

325

Evaluation of a slotted orifice plate flow meter using horizontal two phase flow  

E-Print Network [OSTI]

of MASTER OF SCIENCE December 2000 Major Subject: Mechanical Engineering EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to Texas A&M University in partial fulfillment...: Mechanical Engineering ABSTRACT Fvaluation of a Slotted Orifice Plate Flow Meter Using Horizontal Two Phase Flow. (December 2000) Anita Elena Flores, B. S. , Texas A&M I Jniversitv Chair of Advisory Committee: Dr. Herald L. Morrison In the past several...

Flores, Anita Elena

2012-06-07T23:59:59.000Z

326

Flow characteristics of finite aspect ratio fences in turbulent shear flows  

E-Print Network [OSTI]

FLOW CHARACTERISTICS OF FINITE ASPECT RATIO FENCES IN TURBULENT SHEAR FLOWS A THESIS by JOSEPH RODNEY MATTE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1977 Major. Subject: Aerospace Engineering FLOW CHARACTERISTICS OF FINITE ASPECT RATIO FENCES IN TURBULENT SHEAR FLOWS A Thesis by JOSEPH RODNEY MATTE Approved as to style and content by: (Chairman of Committee) (Head...

Matte, Joseph Rodney

2012-06-07T23:59:59.000Z

327

General single phase wellbore flow model  

SciTech Connect (OSTI)

A general wellbore flow model, which incorporates not only frictional, accelerational and gravitational pressure drops, but also the pressure drop caused by inflow, is presented in this report. The new wellbore model is readily applicable to any wellbore perforation patterns and well completions, and can be easily incorporated in reservoir simulators or analytical reservoir inflow models. Three dimensionless numbers, the accelerational to frictional pressure gradient ratio R{sub af}, the gravitational to frictional pressure gradient ratio R{sub gf}, and the inflow-directional to accelerational pressure gradient ratio R{sub da}, have been introduced to quantitatively describe the relative importance of different pressure gradient components. For fluid flow in a production well, it is expected that there may exist up to three different regions of the wellbore: the laminar flow region, the partially-developed turbulent flow region, and the fully-developed turbulent flow region. The laminar flow region is located near the well toe, the partially-turbulent flow region lies in the middle of the wellbore, while the fully-developed turbulent flow region is at the downstream end or the heel of the wellbore. Length of each region depends on fluid properties, wellbore geometry and flow rate. As the distance from the well toe increases, flow rate in the wellbore increases and the ratios R{sub af} and R{sub da} decrease. Consequently accelerational and inflow-directional pressure drops have the greatest impact in the toe region of the wellbore. Near the well heel the local wellbore flow rate becomes large and close to the total well production rate, here R{sub af} and R{sub da} are small, therefore, both the accelerational and inflow-directional pressure drops can be neglected.

Ouyang, Liang-Biao; Arbabi, S.; Aziz, K.

1997-02-05T23:59:59.000Z

328

INTRODUCTION Few post-wildfire hazards are as potentially devastating as a debris flow. Debris flows  

E-Print Network [OSTI]

INTRODUCTION Few post-wildfire hazards are as potentially devastating as a debris flow. Debris the influence of fire, a wildfire can transform a watershed with no recent history of debris flows are developing new techniques to assess the hazards posed by debris flows after wildfires. These techniques can

329

Determining flow, recharge, and vadose zonedrainage in anunconfined aquifer from groundwater strontium isotope measurements, PascoBasin, WA  

SciTech Connect (OSTI)

Strontium isotope compositions (87Sr/86Sr) measured in groundwater samples from 273 wells in the Pasco Basin unconfined aquifer below the Hanford Site show large and systematic variations that provide constraints on groundwater recharge, weathering rates of the aquifer host rocks, communication between unconfined and deeper confined aquifers, and vadose zone-groundwater interaction. The impact of millions of cubic meters of wastewater discharged to the vadose zone (103-105 times higher than ambient drainage) shows up strikingly on maps of groundwater 87Sr/86Sr. Extensive access through the many groundwater monitoring wells at the site allows for an unprecedented opportunity to evaluate the strontium geochemistry of a major aquifer, hosted primarily in unconsolidated sediments, and relate it to both long term properties and recent disturbances. Groundwater 87Sr/86Sr increases systematically from 0.707 to 0.712 from west to east across the Hanford Site, in the general direction of groundwater flow, as a result of addition of Sr from the weathering of aquifer sediments and from diffuse drainage through the vadose zone. The lower 87Sr/86Sr groundwater reflects recharge waters that have acquired Sr from Columbia River Basalts. Based on a steady-state model of Sr reactive transport and drainage, there is an average natural drainage flux of 0-1.4 mm/yr near the western margin of the Hanford Site, and ambient drainage may be up to 30 mm/yr in the center of the site assuming an average bulk rock weathering rate of 10-7.5 g/g/yr.

mjsingleton@lbl.gov

2004-06-29T23:59:59.000Z

330

Quantitative supersonic flow visualization by hydraulic analogy  

E-Print Network [OSTI]

The hydraulic analogy, which forms the basis for the phics. current investigation, can be used to study supersonic gas flows with great ease by means of a water table. As a result of the analogy, water heights in free surface water flow correspond...

Rani, Sarma Laxminarasimha

2012-06-07T23:59:59.000Z

331

Flow Transformations in Particulate Gravity Currents  

Science Journals Connector (OSTI)

...relevant data on the sub-aerial debris flow are that the gradient...627-637. Parker, G., Fukushima, Y., and Pantin, H.M...relevant data on the sub-aerial debris flow are that the gradient...p. 627637. PARKER, G., FUKUSHIMA, Y., AND PANTIN, H.M...

Dave Waltham

332

Integrable magnetic geodesic flows on Lie groups  

E-Print Network [OSTI]

Right-invariant geodesic flows on manifolds of Lie groups associated with 2-cocycles of corresponding Lie algebras are discussed. Algebra of integrals of motion for magnetic geodesic flows is considered and necessary and sufficient condition of integrability in quadratures is formulated. Canonic forms for 2-cocycles of all 4-dimensional Lie algebras are given and integrable cases among them are separated.

Alexey A. Magazev; Igor V. Shirokov; Yuriy Y. Yurevich

2011-11-03T23:59:59.000Z

333

Scaling bounds on dissipation in turbulent flows  

E-Print Network [OSTI]

We present a new rigorous method for estimating statistical quantities in fluid dynamics such as the (average) energy dissipation rate directly from the equations of motion. The method is tested on shear flow, channel flow, Rayleigh--B\\'enard convection and porous medium convection.

Seis, Christian

2015-01-01T23:59:59.000Z

334

HYPERSONIC FLOW COMPUTATIONS ON UNSTRUCTURED MESHES  

E-Print Network [OSTI]

97--0625 HYPERSONIC FLOW COMPUTATIONS ON UNSTRUCTURED MESHES K. L. Bibb \\Lambda NASA Langley hypersonic flow over complex configurations using unstructured meshes is presented. The unstructured grid for a sphere­cone configuration at Mach numbers of 5.25 and 10.6, and a complex hypersonic re­entry vehicle

Peraire, Jaime

335

Flow through electrode with automated calibration  

DOE Patents [OSTI]

The present invention is an improved automated flow through electrode liquid monitoring system. The automated system has a sample inlet to a sample pump, a sample outlet from the sample pump to at least one flow through electrode with a waste port. At least one computer controls the sample pump and records data from the at least one flow through electrode for a liquid sample. The improvement relies upon (a) at least one source of a calibration sample connected to (b) an injection valve connected to said sample outlet and connected to said source, said injection valve further connected to said at least one flow through electrode, wherein said injection valve is controlled by said computer to select between said liquid sample or said calibration sample. Advantages include improved accuracy because of more frequent calibrations, no additional labor for calibration, no need to remove the flow through electrode(s), and minimal interruption of sampling.

Szecsody, James E [Richland, WA; Williams, Mark D [Richland, WA; Vermeul, Vince R [Richland, WA

2002-08-20T23:59:59.000Z

336

Liquid Crystal Microfluidics for Tunable Flow Shaping  

Science Journals Connector (OSTI)

We explore the flow of a nematic liquid crystal in microfluidic channels with a rectangular cross section through experiments and numerical modeling. The flow profile and the liquid crystal orientational profile show three distinct regimes of weak, medium, and strong flow as the driving pressure is varied. These are identified by comparing polarizing optical microscopy experiments and numerical solutions of the nematofluidic equations of motion. The relative stability of the regimes is related to the de Gennes characteristic shear-flow lengths e1 and e2, together with the channel’s aspect ratio w/d. Finally, we show that the liquid crystalline microfluidic flow can be fully steered from left to right of a simple microchannel by applying transverse temperature gradients.

Anupam Sengupta; Uroš Tkalec; Miha Ravnik; Julia M. Yeomans; Christian Bahr; Stephan Herminghaus

2013-01-25T23:59:59.000Z

337

Rapidity Dependence of Elliptic Flow at RHIC  

E-Print Network [OSTI]

The measured elliptic flow (v2) of identified particles as a function of pT and centrality at RHIC suggests the created medium in Au+Au collisions achieves early local thermal equilibrium that is followed by hydrodynamic expansion. It is not known if the eta dependence on v2 is a general feature of elliptic flow or reflects other changes in the particle spectra in going from mid-rapidity to foward rapidities. The BRAHMS experiment provides a unique capability compared to the other RHIC experiments to measure v2 for identified particles over a wide rapidity range. From Run 4 Au+Au collision at sqrt{s_{NN}} = 200GeV, identified elliptic flow is studied using the BRAHMS spectrometers, which cover 0flow and to measure the pT-integrated flow for charged hadrons.

Erik Johnson

2006-01-04T23:59:59.000Z

338

Commodity Flow Survey | Data.gov  

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

Commodity Flow Survey Commodity Flow Survey BusinessUSA Data/Tools Apps Challenges Let's Talk BusinessUSA You are here Data.gov » Communities » BusinessUSA » Data Commodity Flow Survey Dataset Summary Description The Commodity Flow Survey provides information on commodities shipped, their value, weight, and mode of transportation, as well as the origin and destination of shipments of commodities from manufacturing, mining, wholesale, and selected retail and services establishments. It is undertaken through a partnership between the Bureau of the Census, U.S. Department of Commerce, and the Bureau of Transportation Statistics, Research and Innovative Technology Administration. Tags {cfc,commodity,flow," federal",state,local,transportation,facilities,services,energy,safety,environment,Mining,Manufacturing,Wholesale,trade,Retail,Services,auxiliary,establishments,warehouses,industries,export,shipment,distance,tons,weight,hazardous,miles,ton-miles,destination,industry,hazard,ship,intrastate,interstate,"UN number",packaging,"TIH number",u.s.,metropolitan}

339

Valve for controlling solids flow  

DOE Patents [OSTI]

A fluidized solids control valve is disclosed that is particularly well adapted for use with a flow of coal or char that includes both large particles and fines. The particles may or may not be fluidized at various times during the operation. The valve includes a tubular body that terminates in a valve seat covered by a normally closed closure plate. The valve body at the seat and the closure plate is provided with aligned longitudinal slots that receive a pivotally supported key plate. The key plate is positionable by an operator in inserted, intermediate and retracted positions respecting the longitudinal slot in the valve body. The key plate normally closes the slot within the closure plate but is shaped and aligned obliquely to the longitudinal slot within the valve body to provide progressively increasing slot openings between the inserted and retracted positions. Transfer members are provided between the operator, key plate and closure plate to move the closure plate into an open position only when the key plate is retracted from the longitudinal slot within the valve body.

Feldman, David K. (Fairlawn, NJ)

1980-01-01T23:59:59.000Z

340

Cross flow electrofilter and method  

DOE Patents [OSTI]

A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal. Concentrated slurry is discharged from the first passageway at an end opposite to the feed slurry inlet. Means are also provided for the addition of diluent and a surfactant into the slurry to control relative permittivity and the electrophoretic mobility of the particles.

Gidaspow, Dimitri (Northbrook, IL); Lee, Chang H. (Chicago, IL); Wasan, Darsh T. (Westmont, IL)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Classification of Two-Phase Flow Patterns by Ultrasonic Sensing  

E-Print Network [OSTI]

in addition to several other factors such as the bulk flow rate, fluid properties, and flow boundary conditions [1]. Characterization of flow patterns and identification of the associ- ated flow regimes instrumentation, both for void fraction identification and flow pattern classification. High-speed photog- raphy

Ray, Asok

342

Constraints on flow regimes in wide-aperture fractures  

SciTech Connect (OSTI)

In recent years, significant advances have been made in our understanding of the complex flow processes in individual fractures, aided by flow visualization experiments and conceptual modeling efforts. These advances have led to the recognition of several flow regimes in individual fractures subjected to different initial and boundary conditions. Of these, the most important regimes are film flow, rivulet flow, and sliding of droplets. The existence of such significantly dissimilar flow regimes has been a major hindrance in the development of self-consistent conceptual models of flow for single fractures that encompass all the flow regimes. The objective of this study is to delineate the existence of the different flow regimes in individual fractures. For steady-state flow conditions, we developed physical constraints on the different flow regimes that satisfy minimum energy configurations, which enabled us to segregate the wide range of fracture transmissivity (volumetric flow rate per fracture width) into several flow regimes. These are, in increasing order of flow rate, flow of adsorbed films, flow of sliding drops, rivulet flow, stable film flow, and unstable (turbulent) film flow. The scope of this study is limited to wide-aperture fractures with the flow on the opposing sides of fracture being independent.

Ghezzehei, Teamrat A.

2004-02-28T23:59:59.000Z

343

Geothermal Two-Phase Wellbore Flow: Pressure Drop Correlations and Flow Pattern Transitions  

SciTech Connect (OSTI)

In this paper we present some basic concepts of two-phase flow and review the Orkiszewski (1967) correlations which have been suggested by various investigators to perform well for geothermal wellbore flow situations. We also present a flow regime map based on the transition criteria used by Orkiszewski (1967) and show that most geothermal wells flow under slug flow regime. We have rearranged bubble- to slug-flow transition criterion used by Orkiszewski (1967) to show that the transition depends on the dimensionless pipe diameter number in addition to dimensionless liquid and gas velocity numbers. Our aim is also to identify what research may lead to improvements in two-phase pressure drop calculations for geothermal wellbore flow.

Ambastha, A.K.; Gudmundsson, J.S.

1986-01-21T23:59:59.000Z

344

Structural stability of andesite volcanoes and lava domes  

Science Journals Connector (OSTI)

...limit equilibrium analysis (LEA) methods...high degree of reliability. The principles...quantitative stability analyses developed. It...highly uncertain reliability. By mid-May...Finite element analysis of deformation...Structural Mechanics Reactor Technology, Chicago...

2000-01-01T23:59:59.000Z

345

Structural stability of andesite volcanoes and lava domes  

Science Journals Connector (OSTI)

...is an essential tool in assisting the...modelling of volcanic systems must be very di...Slope hazards assessment diagram posted...in hydrothermal systems occupying the...frequent summit steam explosions and...of pressurized steam, suddenly released...Monitoring and Warning System The following...

2000-01-01T23:59:59.000Z

346

Annular flow control safety valve  

SciTech Connect (OSTI)

A tubular housing having an inner tubular member forms an inner passageway inside of the inner member and an outer passageway between the inner member and the housing. The housing has valve openings leading from the outer passageway to the exterior of the housing and a tubular valve closure member telescopically moves on the interior of the housing. First means move the valve closure member in an upper direction for closing the openings and at least one actuating piston is telescopically movable within and has its longitudinal axis in the wall of the housing and engages the valve closure member. The piston is in communication with a hydraulic passageway adapted to extend to the well surface for actuating the closure member in a direction to open the valve openings. The closure member is positioned whereby upward flow through the outer passageway acts on the closure member to close the valve opening. At least one lockout piston telescopically moves within the housing and is actuated from the surface and is engageable with holding means in the housing for providing a hydraulic lockout for the valve. Shear means may be provided between the lockout piston and the housing for controlling the hydraulic lockout. A single seal is provided between the closure member and the housing and is positioned below the opening and exposed to the pressure on both sides when the valve is opened. Preferably the actuating pistons are connected to the valve closure member but the hydraulic lockout pistons engage but are unconnected to the valve closure member.

Black, P.W.; Pringle, R.E.

1981-06-16T23:59:59.000Z

347

Geologic flow characterization using tracer techniques  

SciTech Connect (OSTI)

A new tracer flow-test system has been developed for in situ characterization of geologic formations. This report describes two sets of test equipment: one portable and one for testing in deep formations. Equations are derived for in situ detector calibration, raw data reduction, and flow logging. Data analysis techniques are presented for computing porosity and permeability in unconfined isotropic media, and porosity, permeability and fracture characteristics in media with confined or unconfined two-dimensional flow. The effects of tracer pulse spreading due to divergence, dispersion, and porous formations are also included.

Klett, R. D.; Tyner, C. E.; Hertel, Jr., E. S.

1981-04-01T23:59:59.000Z

348

Redox Flow Batteries: An Engineering Perspective  

SciTech Connect (OSTI)

Redox flow batteries are well suited to provide modular and scalable energy storage systems for a wide range of energy storage applications. In this paper, we review the development of redox flow battery technology including recent advances in new redox active materials and systems. We discuss cost, performance, and reliability metrics that are critical for deployment of large flow battery systems. The technology, while relatively young, has the potential for significant improvement through reduced materials costs, improved energy and power efficiency, and significant reduction in the overall system cost.

Chalamala, Babu R.; Soundappan, Thiagarajan; Fisher, Graham R.; Anstey, Mitchell A.; Viswanathan, Vilayanur V.; Perry, Mike L.

2014-10-01T23:59:59.000Z

349

Grand valley irrigation return flow case study  

SciTech Connect (OSTI)

Irrigation water supply is furnished annually to about 71,500 acres of land in the Grand Valley of western Colorado. Return flows from that irrigation contribute about 780,000 tpy of salt to the Colorado River, causing an increase of 77 mg/l in the salinity concentration at Imperial Dam. A case study of water quality in this region is focused on: water quality data for irrigation and return flows/ identification of regulations that affect irrigation and return flows/ and a proposed program for controlling salinity levels. (1 map, 9 references, 8 tables)

Keys, J.W.

1981-06-01T23:59:59.000Z

350

Multiphase Flow and Cavern Abandonment in Salt  

SciTech Connect (OSTI)

This report will explore the hypothesis that an underground cavity in gassy salt will eventually be gas filled as is observed on a small scale in some naturally occurring salt inclusions. First, a summary is presented on what is known about gas occurrences, flow mechanisms, and cavern behavior after abandonment. Then, background information is synthesized into theory on how gas can fill a cavern and simultaneously displace cavern fluids into the surrounding salt. Lastly, two-phase (gas and brine) flow visualization experiments are presented that demonstrate some of the associated flow mechanisms and support the theory and hypothesis that a cavity in salt can become gas filled after plugging and abandonment

Ehgartner, Brian; Tidwell, Vince

2001-02-13T23:59:59.000Z

351

Ultrasonic flow imaging system: A feasibility study  

SciTech Connect (OSTI)

This report examines the feasibility and potential problems in developing a real-time ultrasonic flow imaging instrument for on-line monitoring of mixed-phased flows such as coal slurries. State-of-the-art ultrasonic imaging techniques are assessed for this application. Reflection and diffraction tomographies are proposed for further development, including image-reconstruction algorithms and parallel processing systems. A conventional ultrasonic C-scan technique is used to demonstrate the feasibility of imaging the particle motion in a solid/water flow. 13 refs., 11 figs.

Sheen, S.H.; Lawrence, W.P.; Chien, H.T.; Raptis, A.C.

1991-09-01T23:59:59.000Z

352

Mass Dependence of Directed Collective Flow  

SciTech Connect (OSTI)

Sidewards directed fragment flow has been extracted for {sup 84}Kr+{sup 197}Au collisions at {ital E}/{ital A}=200 MeV, using techniques that are free of reaction plane dispersion. The fragment flow per nucleon increases with mass, following a thermal or coalescencelike behavior, and attains roughly constant limiting values at 4{le}{ital A}{le}12. Comparisons of the impact parameter dependences of the measured coalescence-invariant proton flow to Boltzmann-Uehling-Uhlenbeck calculations clearly favor a momentum dependent nuclear mean field. {copyright} {ital 1996 The American Physical Society.}

Huang, M.J.; Lemmon, R.C.; Daffin, F.; Lynch, W.G.; Schwarz, C.; Tsang, M.B.; Williams, C.; Danielewicz, P.; Haglin, K.; Bauer, W.; Carlin, N.; Charity, R.J.; de Souza, R.T.; Gelbke, C.K.; Hsi, W.C.; Kunde, G.J.; Lemaire, M.; Lisa, M.A.; Lynen, U.; Peaslee, G.F.; Pochodzalla, J.; Sann, H.; Sobotka, L.G.; Souza, S.R.; Trautmann, W. [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)] [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States); [Laboratoire National SATURNE, CEN Saclay, 91191 Gif-sur-Yvette Cedex (France); [Department of Chemistry, Washington University, St. Louis, Missouri 63130 (United States); [Gesellschaft fuer Schwerionenforschung, D-6100 Darmstadt 11 (Germany); [Indiana University Cyclotron Facility and Department of Chemistry, Indiana University, Bloomington, Indiana 47405 (United States); [Instituto de Fisica, Universidade de Sao Paulo, CEP 01498, Sao Paulo (Brazil)

1996-10-01T23:59:59.000Z

353

Ionization based multi-directional flow sensor  

DOE Patents [OSTI]

A method, system, and apparatus for conducting real-time monitoring of flow (airflow for example) in a system (a hybrid power generation system for example) is disclosed. The method, system and apparatus measure at least flow direction and velocity with minimal pressure drop and fast response. The apparatus comprises an ion source and a multi-directional collection device proximate the ion source. The ion source is configured to generate charged species (electrons and ions for example). The multi-directional collection source is configured to determine the direction and velocity of the flow in real-time.

Chorpening, Benjamin T. (Morgantown, WV); Casleton, Kent H. (Morgantown, WV)

2009-04-28T23:59:59.000Z

354

A bulk-flow model of angled injection Lomakin bearings  

E-Print Network [OSTI]

A bulk-flow model for determination of the leakage and dynamic force characteristics of angled injection Lomakin bearings is presented. Zeroth- and first-order equations describe the equilibrium flow for a centered bearing and the perturbed flow...

Soulas, Thomas Antoine Theo

2001-01-01T23:59:59.000Z

355

Control of emulsion drop production in flow focusing microfluidics  

E-Print Network [OSTI]

Generating droplets using flow-focusing microfluidics in multiphase flows has reached its limit that it cannot generate submicrometer droplets in size. Flow focusing geometry together with an electric field has been used to make smaller droplets...

Kim, Haejune

2009-05-15T23:59:59.000Z

356

Growth History Of Kilauea Inferred From Volatile Concentrations In  

Open Energy Info (EERE)

History Of Kilauea Inferred From Volatile Concentrations In History Of Kilauea Inferred From Volatile Concentrations In Submarine-Collected Basalts Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Growth History Of Kilauea Inferred From Volatile Concentrations In Submarine-Collected Basalts Details Activities (4) Areas (2) Regions (0) Abstract: Major-element and volatile (H2O, CO2, S) compositions of glasses from the submarine flanks of Kilauea Volcano record its growth from pre-shield into tholeiite shield-stage. Pillow lavas of mildly alkalic basalt at 2600-1900 mbsl on the upper slope of the south flank are an intermediate link between deeper alkalic volcaniclastics and the modern tholeiite shield. Lava clast glasses from the west flank of Papau Seamount are subaerial Mauna Loa-like tholeiite and mark the contact between the two

357

An investigation into flow regimes for two-phase helium flow  

SciTech Connect (OSTI)

The Tevatron accelerator at Fermilab incorporates long two-phase helium passages. During magnet design, the generalized flow map of Baker was used to predict homogeneous flow. Longer than expected magnet time constants led to this investigation. The importance of predicting the flow regime has been amplified with the advent of non-horizontal accelerator designs. A test setup was constructed at Fermilab to investigate two-phase helium flow regimes for conditions practical in accelerator designs. The setup consisted of a standard Tevatron satellite refrigerator, subcooling dewar, heater, 35 m long transfer line, and a specialized end box. A knife blade on the midplane of the transfer line diverted the flow from the upper and lower halves of the pipe to separate vessels in the end box. The amount of liquid above and below the plane was measured at various total mass flow rates and liquid percentages. The results show that stratified flow occurs at much higher liquid percentages than predicted by the Baker diagram (several orders of magnitude). We were not able to produce high enough steady state flows to find a boundary to a homogenous flow regime. Stratified flow occurred over all practical conditions for long accelerator magnet systems.

Theilacker, J.C.; Rode, C.H.

1987-10-01T23:59:59.000Z

358

RbSr ages of igneous rocks from the Apollo 14 mission and the age of the Fra Mauro formation  

Science Journals Connector (OSTI)

Internal Rb-Sr isochrons were determined on four basaltic rocks and on a basaltic clast from a breccia from the Fra Mauro landing site. Rocks 14310, 14073 and 14001,7,3 yield essentially identical ages T = 3.88 ± 0.04 AE and identical high initial 87Sr/86Sr, I = 0.70035 ± 4. Rock 14053 and the clast from breccia 14321 both yield a higher age T = 3.95 ± 0.04 AE and a distinctly lower I = 0.69945 ± 4. Model ages relative to BABI for these rocks range from 4.3 to 4.6 AE. Model ages were determined for soil samples 14141, 14149, 14163, 14259 yielding TBABI of 4.4, 4.5, 4.5 and 4.7 AE respectively. An internal isochron was determined for 12004 and yielded (3.29 ± 0.07 AE, 0.69948 ± 5) in agreement with our previous results for basaltic rocks from the Apollo 12 site. The crystallization ages for Apollo 14 basalts are only 0.2 to 0.3 AE older than were found for mare basalts from the Sea of Tranquillity. Assuming these leucocratic igneous rocks to be representative of the Fra Mauro site, it follows that there were major igneous processes active in these regions, and presumably throughout the highlands, at times only slightly preceding the periods at which the maria were last flooded. If the breccias represent the Fra Mauro formation and if this is the result of excavation of the Imbrium Basin, we must conclude that a major bombardment of the earth-moon system continued to take place at least as late as 3.9 AE or about 0.7 AE after the formation of the solar system. Such a late major bombardment could remove the need for internal heat sources to explain some mare lava flows. Some of the lunar differentiation processes could possibly represent the result of collisional melting of a thin outer layer. This late bombardment requires that planetary objects ? 100 km in size must be stored in unstable orbits with lifetimes of 108 yr or more.

D.A. Papanastassiou; G.J. Wasserburg

1971-01-01T23:59:59.000Z

359

Application of Neutron Imaging and Scattering to Fluid Flow and...  

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

Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS Environments Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS...

360

Flow Test At Wister Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Wister Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Wister Area (DOE GTP) Exploration Activity...

Note: This page contains sample records for the topic "basaltic lava flows" 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

Flow Test At Valles Caldera - Sulphur Springs Geothermal Area...  

Open Energy Info (EERE)

Flow Test At Valles Caldera - Sulphur Springs Geothermal Area (Musgrave, Et Al., 1989) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test...

362

Flow Test At Colrado Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Colrado Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Colrado Area (DOE GTP) Exploration Activity...

363

Flow Test At Alum Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Alum Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Alum Area (DOE GTP) Exploration Activity Details...

364

Fracture Network and Fluid Flow Imaging for EGS Applications...  

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

Fracture Network and Fluid Flow Imaging for EGS Applications from Multi-Dimensional Electrical Resistivity Structure Fracture Network and Fluid Flow Imaging for EGS Applications...

365

Modeling Fluid Flow in Natural Systems, Model Validation and...  

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

rock, flow is primarily in relatively sparse networks of fractures. Discrete fracture network (DFNs) models are an approach to representing flow in fractured rock that...

366

Flowing Electrical Conductivity At Jemez Pueblo Area (DOE GTP...  

Open Energy Info (EERE)

Flowing Electrical Conductivity At Jemez Pueblo Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flowing Electrical Conductivity At...

367

Control Strategies for Centrifugal Pumps with Variable Flow Rate...  

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

Control Strategies for Centrifugal Pumps with Variable Flow Rate Requirements Control Strategies for Centrifugal Pumps with Variable Flow Rate Requirements This tip sheet discusses...

368

DOE Hydrogen Analysis Repository: FLOW Model  

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

FLOW Model FLOW Model Project Summary Full Title: Chemical Engineering Process Simulation Platform - FLOW Project ID: 131 Principal Investigator: Juan Ferrada Brief Description: FLOW is a steady-state chemical process simulator. Modules have been developed for supply chain calculations, micro-economic calculations, and other calculations. Purpose Simulate steady-state chemical processes to support hydrogen infrastructure and transition analysis. Performer Principal Investigator: Juan Ferrada Organization: Oak Ridge National Laboratory (ORNL) Address: Bethel Valley 1, Bldg 5700, N217 Oak Ridge, TN 37831-6166 Telephone: 865-574-4998 Email: ferradajj@ornl.gov Sponsor(s) Name: Fred Joseck Organization: DOE Hydrogen Program Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov

369

Changing Global Petroleum Product Trade Flows  

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

Changing Global Petroleum Product Trade Flows For U.S. Energy Information Administration Conference July 14, 2014 | Washington, D.C. By Susan Grissom, U.S. Energy Information...

370

Micro free-flow isoelectric focusing  

E-Print Network [OSTI]

To unravel the complexity of cellular systems, protein prefractionation tools can be used to reduce cell lysate complexity and increase assay sensitivity. Rapid free flow isoelectric focusing (FF-IEF) is achieved in a ...

Albrecht, Jacob William

2008-01-01T23:59:59.000Z

371

Catalyst immobilization techniques for continuous flow synthesis  

E-Print Network [OSTI]

Catalytic processes are ubiquitous in both research and industrial settings. As continuous flow processes continue to gain traction in research labs and fine and pharmaceutical chemical processes, new opportunities exist ...

Nagy, Kevin David

2012-01-01T23:59:59.000Z

372

Saturation of elliptic flow and shear viscosity  

E-Print Network [OSTI]

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

A. K. Chaudhuri

2007-08-09T23:59:59.000Z

373

Flow mapping for an ESS horizontal target  

SciTech Connect (OSTI)

In the target of the European spallation neutron source (ESS), the beam line is horizontal and the mercury is fully forced by a pump in a parallel channel geometry. The top front of the assembly is a hemicylindrical wall, where the beam enters and is thus called a window. The main body is partitioned by a horizontal separation plate into the upper and the lower flow channels. The target liquid flows in the lower channel to the window region, turns there, and flows out in the upper channel. A thermal-hydraulic study is under way to investigate the general behavior of the flow in this configuration. The present experimental work is the first step of an effort to validate computer codes. The model used in this investigation is two-dimensional and uses water.

Takeda, Y.; Kikura, H.; Taishi, T. [Paul Scherrer Institute, Villigen (Switzerland)

1997-12-01T23:59:59.000Z

374

Magnetic Geodesic Flows on Coadjoint Orbits  

E-Print Network [OSTI]

We describe a class of completely integrable $G$-invariant magnetic geodesic flows on (co)adjoint orbits of a compact connected Lie group $G$ with magnetic field given by the Kirillov-Konstant 2-form.

Alexey V. Bolsinov; Bozidar Jovanovic

2006-04-03T23:59:59.000Z

375

Continuous Flow Multi-Step Organic Synthesis  

E-Print Network [OSTI]

Using continuous flow techniques for multi-step synthesis enables multiple reaction steps to be combined into a single continuous operation. In this mini-review we discuss the current state of the art in this field and ...

Webb, Damien

376

Flow Efficiency and Excitation in Turbine Stages  

Science Journals Connector (OSTI)

The sources of non-steady forces in a turbine stage are reviewed. Procedures for line vortex stage flow analysis and for actuator disk analyses are described, together with details of certain important analyti...

Neville F. Rieger

1990-01-01T23:59:59.000Z

377

Nocturnal Flow on a Western Colorado Slope  

Science Journals Connector (OSTI)

The Department of Energy sponsored Atmospheric Studies in Complex Terrain (ASCOT) program has conducted a research program designed to increase our knowledge and understanding of terrain-dominated flows with spec...

John M. Leone Jr.; Paul H. Gudiksen

1991-01-01T23:59:59.000Z

378

Two-phase flow in horizontal wells  

SciTech Connect (OSTI)

Flow in horizontal wells and two-phase flow interaction with the reservoir were investigated experimentally and theoretically. Two-phase flow behavior has been recognized as one of the most important problems in production engineering. The authors designed and constructed a new test facility suitable for acquiring data on the relationship between pressure drop and liquid holdup along the well and fluid influx from the reservoir. For the theoretical work, an initial model was proposed to describe the flow behavior in a horizontal well configuration. The model uses the inflow-performance-relationship (IPR) approach and empirical correlations or mechanistic models for wellbore hydraulics. Although good agreement was found between the model and experimental data, a new IPR apart from the extension of Darcy`s law must be investigated extensively to aid in the proper design of horizontal wells.

Ihara, Masaru [Japan National Oil Corp., Chiba (Japan); Yanai, Koji [Nippon Kokan Corp., Yokohama (Japan); Yanai, Koji

1995-11-01T23:59:59.000Z

379

Instream Flow Legislation Sandra B. Zellmer,1  

E-Print Network [OSTI]

flows are protected. Examples include ecotourism on the central Platte for birdwatching; ecotourism on the Niobrara for canoeing and tubing; and ecotourism on the Missouri from boating and other recreational uses.7

Nebraska-Lincoln, University of

380

Knowledge Flow Analysis for Security Protocols  

E-Print Network [OSTI]

Knowledge flow analysis offers a simple and flexible way to find flaws in security protocols. A protocol is described by a collection of rules constraining the propagation of knowledge amongst principals. Because this ...

Torlak, Emina

2005-10-19T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Uncertainty quantification for porous media flows  

SciTech Connect (OSTI)

Uncertainty quantification is an increasingly important aspect of many areas of computational science, where the challenge is to make reliable predictions about the performance of complex physical systems in the absence of complete or reliable data. Predicting flows of oil and water through oil reservoirs is an example of a complex system where accuracy in prediction is needed primarily for financial reasons. Simulation of fluid flow in oil reservoirs is usually carried out using large commercially written finite difference simulators solving conservation equations describing the multi-phase flow through the porous reservoir rocks. This paper examines a Bayesian Framework for uncertainty quantification in porous media flows that uses a stochastic sampling algorithm to generate models that match observed data. Machine learning algorithms are used to speed up the identification of regions in parameter space where good matches to observed data can be found.

Christie, Mike [Institute of Petroleum Engineering, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, Scotland (United Kingdom)]. E-mail: mike.christie@pet.hw.ac.uk; Demyanov, Vasily [Institute of Petroleum Engineering, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, Scotland (United Kingdom); Erbas, Demet [Institute of Petroleum Engineering, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, Scotland (United Kingdom)

2006-09-01T23:59:59.000Z

382

Magnetized accretion flows: effects of gas pressure  

Science Journals Connector (OSTI)

......axisymmetric magnetohydrodynamic (MHD) accretion flows depend on...their HD counterparts, the MHD simulations show that the magnetized...discs|black hole physics|MHD|methods: numerical|galaxies...on the luminosity-hardness diagrams. BHBs (as well as galactic......

M. Moscibrodzka; D. Proga

2009-08-21T23:59:59.000Z

383

Multiphase flow in fractured porous media  

SciTech Connect (OSTI)

The major goal of this research project was to improve the understanding of the gas-oil two-phase flow in fractured porous media. In addition, miscible displacement was studied to evaluate its promise for enhanced recovery.

Firoozabadi, A.

1995-02-01T23:59:59.000Z

384

Pressure balanced drag turbine mass flow meter  

DOE Patents [OSTI]

The density of the fluid flowing through a tubular member may be measured by a device comprising a rotor assembly suspended within the tubular member, a fluid bearing medium for the rotor assembly shaft, independent fluid flow lines to each bearing chamber, and a scheme for detection of any difference between the upstream and downstream bearing fluid pressures. The rotor assembly reacts to fluid flow both by rotation and axial displacement; therefore concurrent measurements may be made of the velocity of blade rotation and also bearing pressure changes, where the pressure changes may be equated to the fluid momentum flux imparted to the rotor blades. From these parameters the flow velocity and density of the fluid may be deduced.

Dacus, M.W.; Cole, J.H.

1980-04-23T23:59:59.000Z

385

Pressure balanced drag turbine mass flow meter  

DOE Patents [OSTI]

The density of the fluid flowing through a tubular member may be measured by a device comprising a rotor assembly suspended within the tubular member, a fluid bearing medium for the rotor assembly shaft, independent fluid flow lines to each bearing chamber, and a scheme for detection of any difference between the upstream and downstream bearing fluid pressures. The rotor assembly reacts to fluid flow both by rotation and axial displacement; therefore concurrent measurements may be made of the velocity of blade rotation and also bearing pressure changes, where the pressure changes may be equated to the fluid momentum flux imparted to the rotor blades. From these parameters the flow velocity and density of the fluid may be deduced.

Dacus, Michael W. (Gilbert, AR); Cole, Jack H. (Fayetteville, AR)

1982-01-01T23:59:59.000Z

386

Instabilities in particle-laden flows  

E-Print Network [OSTI]

Particles are present in many industrial processes and in nature. Dry granular flows and suspensions have been well studied and present a broad range of problems in terms of rheology and instabilities. In both cases, new ...

Dupuy, Benjamin, 1981-

2004-01-01T23:59:59.000Z

387

Multiscale CFD simulations of entrained flow gasification  

E-Print Network [OSTI]

The design of entrained flow gasifiers and their operation has largely been an experience based enterprise. Most, if not all, industrial scale gasifiers were designed before it was practical to apply CFD models. Moreover, ...

Kumar, Mayank, Ph. D. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

388

Certification of flow monitors for utility boilers  

SciTech Connect (OSTI)

The use of CEMS for measuring opacity, SO{sub 2}, NO{sub x}, CO{sub 2}, and O{sub 2} concentration was well proven prior to implementing the Part 75 CEMS program. However, the use of continuous flue gas flow monitoring devices is a relatively new instrumental technique. Limited operating data for flow monitors were available and little or no certification relative accuracy data were available prior to the Summer of 1993. However, because of the Part 75 requirements, utility companies contracted with CEMS vendors to install, start-up and certify flow monitors on Phase 1 and Phase 2 units. This paper presents the certification history of three different types of flow monitors (ultrasonic, pressure differential ({Delta}p) and thermal) installed at various utilities in the US. The data and experience was obtained from approximately 100 Phase 1 CEMS units and 200 Phase 1 CEMS units.

Bensink, J.; Beachler, D.; Joseph, J.

1995-12-31T23:59:59.000Z

389

Information flow in entangled quantum systems  

Science Journals Connector (OSTI)

...research-article Research Article Information flow in entangled quantum systems David...of Oxford, , Oxford OX1 3PU, UK All information in quantum systems is, notwithstanding...Heisenberg picture to analyse quantum information processing makes this locality explicit...

2000-01-01T23:59:59.000Z

390

Magnetic Amplifier for Power Flow Control  

SciTech Connect (OSTI)

GENI Project: ORNL is developing an electromagnet-based, amplifier-like device that will allow for complete control over the flow of power within the electric grid. To date, complete control of power flow within the grid has been prohibitively expensive. ORNL’s controller could provide a reliable, cost-effective solution to this problem. The team is combining two types of pre-existing technologies to assist in flow control, culminating in a prototype iron-based magnetic amplifier. Ordinarily, such a device would require expensive superconductive wire, but the magnetic iron core of ORNL’s device could serve as a low-cost alternative that is equally adept at regulating power flow.

None

2012-02-24T23:59:59.000Z

391

Membrane-less hydrogen bromine flow battery  

E-Print Network [OSTI]

In order for the widely discussed benefits of flow batteries for electrochemical energy storage to be applied at large scale, the cost of the electrochemical stack must come down substantially. One promising avenue for ...

Braff, William A.

392

High energy density redox flow device  

DOE Patents [OSTI]

Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particles to suspensions and/or via the surface modification of the solid in semi-solids (e.g., by coating the solid with a more electron conductive coating material to increase the power of the device). High energy density and high power redox flow devices are disclosed. The redox flow devices described herein can also include one or more inventive design features. In addition, inventive chemistries for use in redox flow devices are also described.

Chiang, Yet-Ming; Carter, W. Craig; Ho, Bryan Y; Duduta, Mihai; Limthongkul, Pimpa

2014-05-13T23:59:59.000Z

393

Flocculation of microfibrillated cellulose in shear flow  

Science Journals Connector (OSTI)

In this work, the rheological properties of microfibrillated cellulose suspensions under stepped flow and constant shear were studied using a combination of rotational dynamic rheometer and digital imaging. Du...

Anni Karppinen; Tapio Saarinen; Juha Salmela; Antti Laukkanen…

2012-12-01T23:59:59.000Z

394

Esmaeil Jahanshahi Control Solutions for Multiphase Flow  

E-Print Network [OSTI]

-8181 Doctoral theses at NTNU, 2013:271 Printed by Skipnes #12;SUMMARY Severe-slugging flow in offshore systems are not robust against plant changes and inflow disturbances. The closed-loop system becomes

Skogestad, Sigurd

395

Improving application security with data flow assertions  

E-Print Network [OSTI]

Resin is a new language runtime that helps prevent security vulnerabilities, by allowing programmers to specify application-level data flow assertions. Resin provides policy objects, which programmers use to specify assertion ...

Yip, Alexander

396

Development of the in vivo flow cytometer  

E-Print Network [OSTI]

An in vivo flow cytometer has been developed that allows the real-time detection and quantification of circulating cells containing fluorescent proteins or labeled with fluorochrome molecules in live animals, without the ...

Novak, John P. (John Peter), 1957-

2004-01-01T23:59:59.000Z

397

Ceramic Cross Flow Recuperator Design Parameters  

E-Print Network [OSTI]

GTE Products Corporation has developed a compact ceramic cross flow recuperator for high temperature industrial heat recovery applications. They recently completed a jointly funded project with the DOE, (Contract #EX-76-C-0 1-2162) to demonstrate...

Gonzalez, J. M.; Rebello, W. J.

1981-01-01T23:59:59.000Z

398

Hingeless flow control over delta wing planforms  

E-Print Network [OSTI]

HINGELESS FLOW CONTROL OVER DELTA WING PLANFORMS A Thesis by EDWARD BRIAN MOELLER Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1999... Major Subject: Aerospace Engineering HINGELESS FLOW CONTROL OVER DELTA WING PLANFORMS A Thesis by EDWARD BRIAN MOELLER Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved...

Moeller, Edward Brian

2012-06-07T23:59:59.000Z

399

Generalized correlation for foam flow in tubes  

E-Print Network [OSTI]

GENERALIZED CORRELATION FOR FOAM FLOW IN TUBES A Thesis by CAROL LYNNETTE COTTER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December.... (December 1996) Carol Lynnette Cotter, B. S. , Texas A&M University Chair of Advisory Committee: Dr. Raymond W. Flumerfelt A novel experimental procedure to determine the behavior of foam flow in tubes is established. Using an approach developed...

Cotter, Carol Lynnette

2012-06-07T23:59:59.000Z

400

On the Geodesic Nature of Wegner's Flow  

E-Print Network [OSTI]

Wegner's method of flow equations offers a useful tool for diagonalizing a given Hamiltonian and is widely used in various branches of quantum physics. Here, generalizing this method, a condition is derived, under which the corresponding flow of a quantum state becomes geodesic in a submanifold of the projective Hilbert space, independently of specific initial conditions. This implies the geometric optimality of the present method as an algorithm of generating stationary states. The result is illustrated by analyzing some physical examples.

Yuichi Itto; Sumiyoshi Abe

2012-02-08T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Shear dispersion in dense granular flows  

E-Print Network [OSTI]

We formulate and solve a model problem of dispersion of dense granular materials in rapid shear flow down an incline. The effective dispersivity of the depth-averaged concentration of the dispersing powder is shown to vary as the P\\'eclet number squared, as in classical Taylor--Aris dispersion of molecular solutes. An extensions to generic shear profiles is presented, and possible applications to industrial and geological granular flows are noted.

Christov, Ivan C

2014-01-01T23:59:59.000Z

402

A model for transonic plasma flow  

SciTech Connect (OSTI)

A linear, two-dimensional model of a transonic plasma flow in equilibrium is constructed and given an explicit solution in the form of a complex Laplace integral. The solution indicates that the transonic state can be solved as an elliptic boundary value problem, as is done in the numerical code FLOW [Guazzotto et al., Phys. Plasmas 11, 604 (2004)]. Moreover, the presence of a hyperbolic region does not necessarily imply the presence of a discontinuity or any other singularity of the solution.

Guazzotto, Luca, E-mail: luca.guazzotto@rochester.edu [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Hameiri, Eliezer, E-mail: hameiri@cims.nyu.edu [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)] [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)

2014-02-15T23:59:59.000Z

403

Data flow machine for data driven computing  

DOE Patents [OSTI]

A data flow computer which of computing is disclosed which utilizes a data driven processor node architecture. The apparatus in a preferred embodiment includes a plurality of First-In-First-Out (FIFO) registers, a plurality of related data flow memories, and a processor. The processor makes the necessary calculations and includes a control unit to generate signals to enable the appropriate FIFO register receiving the result. In a particular embodiment, there are three FIFO registers per node: an input FIFO register to receive input information form an outside source and provide it to the data flow memories; an output FIFO register to provide output information from the processor to an outside recipient; and an internal FIFO register to provide information from the processor back to the data flow memories. The data flow memories are comprised of four commonly addressed memories. A parameter memory holds the A and B parameters used in the calculations; an opcode memory holds the instruction; a target memory holds the output address; and a tag memory contains status bits for each parameter. One status bit indicates whether the corresponding parameter is in the parameter memory and one status but to indicate whether the stored information in the corresponding data parameter is to be reused. The tag memory outputs a "fire" signal (signal R VALID) when all of the necessary information has been stored in the data flow memories, and thus when the instruction is ready to be fired to the processor.

Davidson, George S. (Albuquerque, NM); Grafe, Victor G. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

404

Data flow machine for data driven computing  

DOE Patents [OSTI]

A data flow computer and method of computing is disclosed which utilizes a data driven processor node architecture. The apparatus in a preferred embodiment includes a plurality of First-In-First-Out (FIFO) registers, a plurality of related data flow memories, and a processor. The processor makes the necessary calculations and includes a control unit to generate signals to enable the appropriate FIFO register receiving the result. In a particular embodiment, there are three FIFO registers per node: an input FIFO register to receive input information from an outside source and provide it to the data flow memories; an output FIFO register to provide output information from the processor to an outside recipient; and an internal FIFO register to provide information from the processor back to the data flow memories. The data flow memories are comprised of four commonly addressed memories. A parameter memory holds the A and B parameters used in the calculations; an opcode memory holds the instruction; a target memory holds the output address; and a tag memory contains status bits for each parameter. One status bit indicates whether the corresponding parameter is in the parameter memory and one status bit to indicate whether the stored information in the corresponding data parameter is to be reused. The tag memory outputs a ''fire'' signal (signal R VALID) when all of the necessary information has been stored in the data flow memories, and thus when the instruction is ready to be fired to the processor. 11 figs.

Davidson, G.S.; Grafe, V.G.

1988-07-22T23:59:59.000Z

405

An evaluation of heat flow transducers as a means of determining soil heat flow  

E-Print Network [OSTI]

provided to the Micrometeorology Section, Department of Oceanography and Meteorology, ARM College of Texas by the Signal Corps of the United States Army, under Contract No. DA 36-039 AMC-02195 (E). The heat flow plates used in this study were provided... surface soil heat flow. The results show that acceptable performance of the plates in the measurement of heat flow is possible although in general should not be expected without thorough testing, and even then there are restrictive considerations...

King, Barney L. D

2012-06-07T23:59:59.000Z

406

Evaluation of low flow characteristics of the Vermont Yankee plant  

SciTech Connect (OSTI)

Boiling water reactor (BWR) core flow instrumentation inaccuracies under low-flow conditions have been the subject of both reactor vendor and regulatory communications in response to incidents of the reported core flow being less than the flow corresponding to the natural-circulation line on the power flow map. During single recirculation loop operation, low-flow conditions exist in the idle recirculation loop, and these flow inaccuracies can affect the usefulness of the reported core flow. Accurate core flow indications are needed above 25% power to administer fuel thermal limits and comply with restrictions associated with the potential for thermal-hydraulic instability. While the natural-circulation line on the power flow map is recognized to be a nominal estimate of the flow expected at and near natural-circulation conditions, the boundaries of the stability regions are associated with conditions assumed in safety analyses performed to demonstrate compliance with general design criteria 10 and 12.

Ganther, S.; LeFrancoi, M.; Bergeron, P. [Yankee Atomic Electric Co., Bolton, MA (United States)

1997-12-01T23:59:59.000Z

407

Investigations On Flow And Flow-Induced Vibration Of Candu Fuel Bundles.  

E-Print Network [OSTI]

??Excitations induced by three-dimensional unsteady flows of ordinary water coolant through a string of CANDU fuel bundles in a fuel channel are investigated in this… (more)

Bhattacharya, Alokendu (Author)

2013-01-01T23:59:59.000Z

408

Slurry fired heater cold-flow modelling  

SciTech Connect (OSTI)

This report summarizes the experimental and theoretical work leading to the scale-up of the SRC-I Demonstration Plant slurry fired heater. The scale-up involved a theoretical model using empirical relations in the derivation, and employed variables such as flow conditions, liquid viscosity, and slug frequency. Such variables have been shown to affect the heat transfer characteristics ofthe system. The model assumes that, if all other variables remain constant, the heat transfer coefficient can be scaled up proportional to D/sup -2/3/ (D = inside diameter of the fired heater tube). All flow conditions, liquid viscosities, and pipe inclinations relevant to the demonstration plant have indicated a slug flow regime in the slurry fired heater. The annular and stratified flow regimes should be avoided to minimize the potential for excessive pipe erosion and to decrease temperature gradients along the pipe cross section leading to coking and thermal stresses, respectively. Cold-flow studies in 3- and 6.75-in.-inside-diameter (ID) pipes were conducted to determine the effect of scale-up on flow regime, slug frequency, and slug dimensions. The developed model assumes that conduction heat transfer occurs through the liquid film surrounding the gas slug and laminar convective heat transfer to the liquid slug. A weighted average of these two heat transfer mechanisms gives a value for the average pipe heat transfer coefficient. The cold-flow work showed a decrease in the observed slug frequency between the 3- and 6.75-ID pipes. Data on the ratio of gas to liquid slug length in the 6.75-in. pipe are not yet complete, but are expected to yield generally lower values than those obtained in the 3-in. pipe; this will probably affect the scale-up to demonstration plant conditions. 5 references, 15 figures, 7 tables.

Moujaes, S.F.

1983-07-01T23:59:59.000Z

409

Slide 1  

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

Pittsburgh Oct 7, 2008 Pittsburgh Oct 7, 2008 Charlotte Sullivan 2 Phase II Grande Ronde Basalt Sequestration Project Overview An Ugly Duckling Sequestration Target: An Ugly Duckling Sequestration Target: Layered Basalt Flows Layered Basalt Flows * 30% porosity * 1-2 Darcies * Assume only 3% of total basalt is suitable for injection, * ≈50Gt CO 2 storage capacity = + + Carbonic Acid and Water = Calcite or Magnesite Calcium - Magnesium Rich Basalt jmatter@ldeo.columbia.edu Geologic Mineral Trapping Geologic Mineral Trapping Goals Overall: Demonstrate and validate safe, permanent storage of CO 2 in reactive mafic basalts of the Columbia River Basalt Group (CRBG) in eastern Washington . * Specific: Conduct a small scale CO 2 sequestration project in deep basalts of the CRBG. * The effort under Phase II consists of

410

Uniform and Preferential Flow Mechanisms in the Vadose Zone  

E-Print Network [OSTI]

flow and chemical leaching. The objectives of this paper are to describe and classify flow mechanisms on measurement techniques for preferential flow and with guidelines for the formu- lation of conceptual models. All rights reserved. Conceptual Models of Flow and Transport in the Fractured Vadose Zone http

Flury, Markus

411

ARC-HEATED GAS FLOW EXPERIMENTS FOR HYPERSONIC PROPULSION  

E-Print Network [OSTI]

was extensively developed for the purpose of eventually performing experiments simulating scramjet engine flow

Texas at Arlington, University of

412

Optimized Anion Exchange Membranes for Vanadium Redox Flow Batteries  

Science Journals Connector (OSTI)

vanadium redox flow battery; anion exchange membrane; ion exchange capacity; cycling performance; power density ... All electrochemical measurements were conducted using a fully automated redox flow battery testing system (Scribner 857 Redox Flow Cell System). ... Characteristics of a new all-vanadium redox flow battery ...

Dongyang Chen; Michael A. Hickner; Ertan Agar; E. Caglan Kumbur

2013-06-25T23:59:59.000Z

413

Improving Work Flow Reliability Proceedings IGLC-7 275  

E-Print Network [OSTI]

Ballard1 ABSTRACT Improving work flow reliability is important for the productivity of linked productionImproving Work Flow Reliability Proceedings IGLC-7 275 IMPROVING WORK FLOW RELIABILITY Glenn units, and consequently for project cost and duration. One measure of work flow reliability is PPC

Tommelein, Iris D.

414

A Hydrostratigraphic System for Modeling Groundwater Flow and Radionuclide Migration at the Corrective Action Unit Scale, Nevada Test Site and Surrounding Areas, Clark, Lincoln, and Nye Counties, Nevada  

SciTech Connect (OSTI)

Underground Test Area (UGTA) corrective action unit (CAU) groundwater flow and contaminant transport models of the Nevada Test Site (NTS) and vicinity are built upon hydrostratigraphic framework models (HFMs) that utilize the hydrostratigraphic unit (HSU) as the fundamental modeling component. The delineation and three-dimensional (3-D) modeling of HSUs within the highly complex geologic terrain that is the NTS requires a hydrostratigraphic system that is internally consistent, yet flexible enough to account for overlapping model areas, varied geologic terrain, and the development of multiple alternative HFMs. The UGTA CAU-scale hydrostratigraphic system builds on more than 50 years of geologic and hydrologic work in the NTS region. It includes 76 HSUs developed from nearly 300 stratigraphic units that span more than 570 million years of geologic time, and includes rock units as diverse as marine carbonate and siliciclastic rocks, granitic intrusives, rhyolitic lavas and ash-flow tuffs, and alluvial valley-fill deposits. The UGTA CAU-scale hydrostratigraphic system uses a geology-based approach and two-level classification scheme. The first, or lowest, level of the hydrostratigraphic system is the hydrogeologic unit (HGU). Rocks in a model area are first classified as one of ten HGUs based on the rock’s ability to transmit groundwater (i.e., nature of their porosity and permeability), which at the NTS is mainly a function of the rock’s primary lithology, type and degree of postdepositional alteration, and propensity to fracture. The second, or highest, level within the UGTA CAU-scale hydrostratigraphic system is the HSU, which is the fundamental mapping/modeling unit within UGTA CAU-scale HFMs. HSUs are 3-D bodies that are represented in the finite element mesh for the UGTA groundwater modeling process. HSUs are defined systematically by stratigraphically organizing HGUs of similar character into larger HSUs designations. The careful integration of stratigraphic information in the development of HSUs is important to assure individual HSUs are internally consistent, correlatable, and mappable throughout all the model areas.

Lance Prothro, Sigmund Drellack Jr., Jennifer Mercadante

2009-01-31T23:59:59.000Z

415

Free Flow Power Corporation | Open Energy Information  

Open Energy Info (EERE)

Flow Power Corporation Flow Power Corporation Jump to: navigation, search Name Free Flow Power Corporation Address 239 Causeway St Suite 300 Place Gloucester, Massachusetts Zip 1930 Sector Marine and Hydrokinetic, Ocean Product Massachusetts-based company that has developed a turbine generator designed to extract energy from tides, ocean currents, rivers, streams, canals and conduits. Free Flow has raised some initial funding and is prototype testing in rivers and tanks. Year founded 2007 Number of employees 28 Phone number 978-232-3536 Website http://www.free-flow-power.com Coordinates 37.413962°, -76.526305° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.413962,"lon":-76.526305,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

416

Flow Battery System Design for Manufacturability.  

SciTech Connect (OSTI)

Flow battery energy storage systems can support renewable energy generation and increase energy efficiency. But, presently, the costs of flow battery energy storage systems can be a significant barrier for large-scale market penetration. For cost- effective systems to be produced, it is critical to optimize the selection of materials and components simultaneously with the adherence to requirements and manufacturing processes to allow these batteries and their manufacturers to succeed in the market by reducing costs to consumers. This report analyzes performance, safety, and testing requirements derived from applicable regulations as well as commercial and military standards that would apply to a flow battery energy storage system. System components of a zinc-bromine flow battery energy storage system, including the batteries, inverters, and control and monitoring system, are discussed relative to manufacturing. The issues addressed include costs and component availability and lead times. A service and support model including setup, maintenance and transportation is outlined, along with a description of the safety-related features of the example flow battery energy storage system to promote regulatory and environmental, safety, and health compliance in anticipation of scale manufacturing.

Montoya, Tracy Louise; Meacham, Paul Gregory; Perry, David; Broyles, Robin S.; Hickey, Steven; Hernandez, Jacquelynne

2014-10-01T23:59:59.000Z

417

Dissipative flows of 2D foams  

E-Print Network [OSTI]

We analyze the flow of a liquid foam between two plates separated by a gap of the order of the bubble size (2D foam). We concentrate on the salient features of the flow that are induced by the presence, in an otherwise monodisperse foam, of a single large bubble whose size is one order of magnitude larger than the average size. We describe a model suited for numerical simulations of flows of 2D foams made up of a large number of bubbles. The numerical results are successfully compared to analytical predictions based on scaling arguments and on continuum medium approximations. When the foam is pushed inside the cell at a controlled rate, two basically different regimes occur: a plug flow is observed at low flux whereas, above a threshold, the large bubble migrates faster than the mean flow. The detailed characterization of the relative velocity of the large bubble is the essential aim of the present paper. The relative velocity values, predicted both from numerical and from analytical calculations that are discussed here in great detail, are found to be in fair agreement with experimental results.

Isabelle Cantat; Renaud Delannay

2005-07-21T23:59:59.000Z

418

Response of a slotted plate flow meter to horizontal two phase flow  

E-Print Network [OSTI]

meter is always better in performance and accuracy than the standard orifice plate flow meter. This study is primarily based on how a slotted plate responds to horizontal two-phase flow with air and water being used as the working fluids. The plates...

Muralidharan, Vasanth

2005-02-17T23:59:59.000Z

419

Molten Slag Flow and Phase Transformation Behaviors in a Slagging Entrained-Flow Coal Gasifier  

Science Journals Connector (OSTI)

Molten Slag Flow and Phase Transformation Behaviors in a Slagging Entrained-Flow Coal Gasifier ... (14) The radiative heat-transfer equation for an absorbing, emitting, and scattering medium at position r in the direction s is where a and ?s represent the absorption and scattering coefficient, respectively. ...

Jianjun Ni; Zhijie Zhou; Guangsuo Yu; Qinfeng Liang; Fuchen Wang

2010-10-20T23:59:59.000Z

420

Flow heterogeneity following global no-flow ischemia in isolated rabbit heart  

SciTech Connect (OSTI)

The purpose of this study was to evaluate flow heterogeneity and impaired reflow during reperfusion following 60 min global no-flow ischemia in the isolated rabbit heart. Radiolabeled microspheres were used to measure relative flow in small left ventricular (LV) segments in five ischemia + reperfused hearts and in five non-ischemic controls. Although variable in the post-ischemic hearts, flow heterogeneity was increased relative to pre-ischemia for the whole LV (0.92 plus or minus 0.41 vs. 0.37 plus or minus 0.07, P < 0.05) as well as the subendocardium (Endo) and subepicardium (Epi) considered separately (endo: 1.28 plus or minus 0.74 vs. 0.30 plus or minus 0.09; epi: 0.69 plus or minus 0.22 vs. 0.38 plus or minus 0.08; P < 0.05 for both comparisons) during early reperfusion. There were also segments with abnormally reduced reflow. The number of segments with abnormally reduced reflow increased as flow heterogeneity increased. Abnormally reduced reflow indicates that regional ischemia can persist despite restoration of normal global flow. In addition, the relationship between regional and global flow is altered and venous outflow is derived from regions with continued perfusion and not the whole LV. These observations emphasize the need to quantify regional reflow during reperfusion following sustained no-flow ischemia in the isolated rabbit heart.

Marshall, Robert C.; Powers-Risius, Patricia; Reutter, Bryan W.; Schustz, Amy M.; Kuo, Chaincy; Huesman, Michelle K.; Huesman, Ronald H.

2003-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "basaltic lava flows" 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

Pressure-flow reducer for aerosol focusing devices  

DOE Patents [OSTI]

A pressure-flow reducer, and an aerosol focusing system incorporating such a pressure-flow reducer, for performing high-flow, atmosphere-pressure sampling while delivering a tightly focused particle beam in vacuum via an aerodynamic focusing lens stack. The pressure-flow reducer has an inlet nozzle for adjusting the sampling flow rate, a pressure-flow reduction region with a skimmer and pumping ports for reducing the pressure and flow to enable interfacing with low pressure, low flow aerosol focusing devices, and a relaxation chamber for slowing or stopping aerosol particles. In this manner, the pressure-flow reducer decouples pressure from flow, and enables aerosol sampling at atmospheric pressure and at rates greater than 1 liter per minute.

Gard, Eric (San Francisco, CA); Riot, Vincent (Oakland, CA); Coffee, Keith (Diablo Grande, CA); Woods, Bruce (Livermore, CA); Tobias, Herbert (Kensington, CA); Birch, Jim (Albany, CA); Weisgraber, Todd (Brentwood, CA)

2008-04-22T23:59:59.000Z

422

Turbine exhaust diffuser with region of reduced flow area and outer boundary gas flow  

DOE Patents [OSTI]

An exhaust diffuser system and method for a turbine engine. The outer boundary may include a region in which the outer boundary extends radially inwardly toward the hub structure and may direct at least a portion of an exhaust flow in the diffuser toward the hub structure. At least one gas jet is provided including a jet exit located on the outer boundary. The jet exit may discharge a flow of gas downstream substantially parallel to an inner surface of the outer boundary to direct a portion of the exhaust flow in the diffuser toward the outer boundary to effect a radially outward flow of at least a portion of the exhaust gas flow toward the outer boundary to balance an aerodynamic load between the outer and inner boundaries.

Orosa, John

2014-03-11T23:59:59.000Z

423

Higher dimensions Max flow min cut in higher dimensions  

E-Print Network [OSTI]

-negative number, and direction) to each edge such that: net flow at each vertex, except S and T, is zero; and |xe, and direction) to each edge such that: net flow at each vertex is zero; and |xe| e. Value of flow is x0. Duval: net flow at each vertex is zero; and |xe| e. Value of flow is x0. Definition Cut is minimal set

Duval, Art

424

The in situ permeable flow sensor: A device for measuring groundwater flow velocity  

SciTech Connect (OSTI)

A new technology called the In Situ Permeable Flow Sensor has been developed at Sandia National Laboratories. These sensors use a thermal perturbation technique to directly measure the direction and magnitude of the full three dimensional groundwater flow velocity vector in unconsolidated, saturated, porous media. The velocity measured is an average value characteristic of an approximately 1 cubic meter volume of the subsurface. During a test at the Savannah River Site in South Carolina, two flow sensors were deployed in a confined aquifer in close proximity to a well which was screened over the entire vertical extent of the aquifer and the well was pumped at four different pumping rates. In this situation horizontal flow which is radially directed toward the pumping well is expected. The flow sensors measured horizontal flow which was directed toward the pumping well, within the uncertainty in the measurements. The observed magnitude of the horizontal component of the flow velocity increased linearly with pumping rate, as predicted by theoretical considerations. The measured horizontal component of the flow velocity differed from the predicted flow velocity, which was calculated with the assumptions that the hydraulic properties of the aquifer were radially homogeneous and isotropic, by less than a factor of two. Drawdown data obtained from other wells near the pumping well during the pump test indicate that the hydraulic properties of the aquifer are probably not radially homogeneous but the effect of the inhomogeneity on the flow velocity field around the pumping well was not modeled because the degree and distribution of the inhomogeneity are unknown. Grain size analysis of core samples from wells in the area were used to estimate the vertical distribution of hydraulic conductivity.

Ballard, S.; Barker, G.T. [Sandia National Labs., Albuquerque, NM (United States); Nichols, R.L. [Savannah River Technology Center, Aiken, SC (United States)

1994-03-01T23:59:59.000Z

425

Precision Flow Technologies | Open Energy Information  

Open Energy Info (EERE)

Precision Flow Technologies Precision Flow Technologies Jump to: navigation, search Name Precision Flow Technologies Place Saugerties, New York Zip 12477 Product New York-based, firm focused on the design and manufacture of ultra high purity gas and control systems. Coordinates 42.07778°, -73.952459° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.07778,"lon":-73.952459,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

426

Precision Flow Table | Open Energy Information  

Open Energy Info (EERE)

Table Table Jump to: navigation, search Basic Specifications Facility Name Flow Table Overseeing Organization United States Army Corp of Engineers (ERDC) Hydrodynamic Testing Facility Type Flow Table Length(m) 2.4 Beam(m) 1.2 Water Type Freshwater Cost(per day) Contact POC Towing Capabilities Towing Capabilities None Wavemaking Capabilities Wavemaking Capabilities None Channel/Tunnel/Flume Channel/Tunnel/Flume Yes Wind Capabilities Wind Capabilities None Control and Data Acquisition Description Automated data acquisition and control system Cameras None Available Sensors Flow, Pressure Range(psi), Turbulence, Velocity, Wave Probe Data Generation Capability Real-Time No Test Services Test Services Yes Past Pertinent Test Experience Users are District Engineers, Planners, and Engineering Consultants

427

Flowing Liquid Crystal Simulating the Schwarzschild Metric  

E-Print Network [OSTI]

We show how to simulate the equatorial section of the Schwarzschild metric through a flowing liquid crystal in its nematic phase. Inside a liquid crystal in the nematic phase, a traveling light ray feels an effective metric, whose properties are linked to perpendicular and parallel refractive indexes, $n_o$ e $n_e$ respectively, of the rod-like molecule of the liquid crystal. As these indexes depend on the scalar order parameter of the liquid crystal, the Beris-Edwards hydrodynamic theory is used to connect the order parameter with the velocity of a liquid crystal flow at each point. This way we calculate a radial velocity profile that simulates the equatorial section of the Schwarzschild metric, in the region outside of Schwarzschild's radius, in the nematic phase of the liquid crystal. In our model, the higher flow velocity can be of the order of some meters per second.

Erms R. Pereira; Fernando Moraes

2010-11-21T23:59:59.000Z

428

Source flow chemical laser cavity performance  

SciTech Connect (OSTI)

The flow field in chemical optical cavities with source flow injectors is investigated. The 2-D coupled gasdynamics, chemical-vibrational-rotational kinetics, and multiline laser radiation equations are solved by using a stable implicit numerical method. The flow field-resonator interaction through the gain-intensity relations is calculated by linearization of the kinetics equations and application of an interative procedure. Calculated small signal gain distributions, closed cavity power variation with mode width, and intracavity spectral content are shown to be in close agreement with experimental measurements. A parametric study has also been conducted, and the potential improvements in performance are illustrated. The results indicate a strong dependency of optical power potential on fluid mechanical interactions with the injector cavity hardware.

Quan, V.; Vieceli, J.J.; Yang, T.T.

1984-05-01T23:59:59.000Z

429

Lattice Boltzmann model for traffic flow  

Science Journals Connector (OSTI)

Mesoscopic models for traffic flows are usually difficult to be employed because of the appearance of integro-differential terms in the models. In this work, a lattice Boltzmann model for traffic flow is introduced on the basis of the existing kinetics models by using the Bhatnagar-Gross-Krook-type approximation interaction term in the Boltzmann equation and discretizing it in time and phase space. The so-obtained model is simple while the relevant parameters are physically meaningful. Together with its discrete feature, the model can be easily used to investigate numerically the behavior of traffic flows. In consequence, the macroscopic dynamics of the model is derived using the Taylor and Chapman-Enskog expansions. For validating the model, numerical simulations are conducted under the periodic boundary conditions. It is found that the model could reasonably reproduce the fundamental diagram. Moreover, certain interesting physical phenomena can be captured by the model, such as the metastability and stop-and-go phenomena.

Jianping Meng; Yuehong Qian; Xingli Li; Shiqiang Dai

2008-03-06T23:59:59.000Z

430

Flow coating apparatus and method of coating  

DOE Patents [OSTI]

Disclosed is a flow coating apparatus, comprising a slot that can dispense a coating material in an approximately uniform manner along a distribution blade that increases uniformity by means of surface tension and transfers the uniform flow of coating material onto an inclined substrate such as for example glass, solar panels, windows or part of an electronic display. Also disclosed is a method of flow coating a substrate using the apparatus such that the substrate is positioned correctly relative to the distribution blade, a pre-wetting step is completed where both the blade and substrate are completed wetted with a pre-wet solution prior to dispensing of the coating material onto the distribution blade from the slot and hence onto the substrate. Thereafter the substrate is removed from the distribution blade and allowed to dry, thereby forming a coating.

Hanumanthu, Ramasubrahmaniam; Neyman, Patrick; MacDonald, Niles; Brophy, Brenor; Kopczynski, Kevin; Nair, Wood

2014-03-11T23:59:59.000Z

431

Fuel cell with internal flow control  

SciTech Connect (OSTI)

A fuel cell stack is provided with a plurality of fuel cell cassettes where each fuel cell cassette has a fuel cell with an anode and cathode. The fuel cell stack includes an anode supply chimney for supplying fuel to the anode of each fuel cell cassette, an anode return chimney for removing anode exhaust from the anode of each fuel cell cassette, a cathode supply chimney for supplying oxidant to the cathode of each fuel cell cassette, and a cathode return chimney for removing cathode exhaust from the cathode of each fuel cell cassette. A first fuel cell cassette includes a flow control member disposed between the anode supply chimney and the anode return chimney or between the cathode supply chimney and the cathode return chimney such that the flow control member provides a flow restriction different from at least one other fuel cell cassettes.

Haltiner, Jr., Karl J. (Fairport, NY); Venkiteswaran, Arun (Karnataka, IN)

2012-06-12T23:59:59.000Z

432

Theoretical and numerical studies on the flow multiplicity phenomenon for gas–solids two-phase flows in CFB risers  

Science Journals Connector (OSTI)

The dependence of the fully-developed flow profiles on the inlet flow conditions for gas–solids two-phase flows, i.e. the flow multiplicity phenomenon, in circulating fluidized bed (CFB) risers was proposed and discussed in this article. The flow multiplicity phenomenon for gas–solids two-phase flows was first proved mathematically based on the conservation equations of mass and momentum. Then the CFD model using Eulerian–Eulerian approach with k–? turbulence model for each phase was further adopted to analyze the details of this flow multiplicity phenomenon. It is theoretically and numerically revealed that for gas–solids two-phase flows, the flow profiles in the fully-developed region are always dominated by the flow profiles at the inlet. The solids concentration profile is closely coupled with the velocity profile, and the inlet solids concentration and velocity profiles can largely influence the fully-developed concentration and velocity profiles.

B. Peng; C. Zhang; J. Zhu

2011-01-01T23:59:59.000Z

433

The geodesic flow on a Riemannian supermanifold  

E-Print Network [OSTI]

We give a natural definition of geodesics on a Riemannian supermanifold and extend the usual geodesic flow defined on the cotangent bundle of the body of the supermanifold, associated to the induced Riemannian structure on the body, to a geodesic "superflow" on the cotangent bundle of the supermanifold. Integral curves of this flow turn out to be in natural bijection with geodesics on the Riemannian supermanifold. We also construct the corresponding exponential map and generalize the well-known faithful linearization of isometries to Riemannian supermanifolds.

Stéphane Garnier; Tilmann Wurzbacher

2011-07-09T23:59:59.000Z

434

TANK MIXING STUDY WITH FLOW RECIRCULATION  

SciTech Connect (OSTI)

The primary objective of this work is to quantify the mixing time when two miscible fluids are mixed by one recirculation pump and to evaluate adequacy of 2.5 hours of pump recirculation to be considered well mixed in SRS tanks, JT-71/72. The work scope described here consists of two modeling analyses. They are the steady state flow pattern analysis during pump recirculation operation of the tank liquid and transient species transport calculations based on the initial steady state flow patterns. The modeling calculations for the mixing time are performed by using the 99% homogeneity criterion for the entire domain of the tank contents.

Lee, S.

2014-06-25T23:59:59.000Z

435

Geothermal electric cash flow model (GCFM)  

SciTech Connect (OSTI)

The Geothermal Cash Flow Model (GCFM) is a user-interactive computer model that estimates the costs and cash flow patterns of geothermal electric development projects. It was developed as a financial analysis tool for the US Department of Energy Geothermal Loan Guaranty Program. It contains a power-plant sizing and costing routine that is useful for preliminary feasibility studies of geothermal projects. The model can be operated using either a few preliminary estimates of geothermal resource characteristics or detailed estimates from reservoir engineering and power plant engineering studies. GCFM is available for public distribution.

Entingh, D.J.; Keimig, M.A.

1981-10-01T23:59:59.000Z

436

Rebalancing electrolytes in redox flow battery systems  

DOE Patents [OSTI]

Embodiments of redox flow battery rebalancing systems include a system for reacting an unbalanced flow battery electrolyte with a rebalance electrolyte in a first reaction cell. In some embodiments, the rebalance electrolyte may contain ferrous iron (Fe.sup.2+) which may be oxidized to ferric iron (Fe.sup.3+) in the first reaction cell. The reducing ability of the rebalance reactant may be restored in a second rebalance cell that is configured to reduce the ferric iron in the rebalance electrolyte back into ferrous iron through a reaction with metallic iron.

Chang, On Kok; Pham, Ai Quoc

2014-12-23T23:59:59.000Z

437

Proper time regulator and renormalization group flow  

Science Journals Connector (OSTI)

We consider some applications of the renormalization group flow equations obtained by resorting to a specific class of proper time regulators. Within this class a particular limit that corresponds to a sharpening of the effective width of the regulator is investigated and a procedure to analytically implement this limit on the flow equations is shown. We focus on the critical exponents determination for the O(N) symmetric scalar theory in three dimensions. The large N limit and some perturbative features in four dimensions are also analyzed. In all problems examined the results are optimized when the mentioned limit of the proper time regulator is taken.

M. Mazza and D. Zappalà

2001-10-22T23:59:59.000Z

438

Proper time regulator and Renormalization Group flow  

E-Print Network [OSTI]

We consider some applications of the Renormalization Group flow equations obtained by resorting to a specific class of proper time regulators. Within this class a particular limit that corresponds to a sharpening of the effective width of the regulator is investigated and a procedure to analytically implement this limit on the flow equations is shown. We focus on the critical exponents determination for the O(N) symmetric scalar theory in three dimensions. The large N limit and some perturbative features in four dimensions are also analysed. In all problems examined the results are optimized when the mentioned limit of the proper time regulator is taken.

M. Mazza; D. Zappala'

2001-06-25T23:59:59.000Z

439

System for measuring multiphase flow using multiple pressure differentials  

DOE Patents [OSTI]

An improved method and system for measuring a multi-phase flow in a pressure flow meter. An extended throat venturi is used and pressure of the multi-phase flow is measured at three or more positions in the venturi, which define two or more pressure differentials in the flow conduit. The differential pressures are then used to calculate the mass flow of the gas phase, the total mass flow, and the liquid phase. The system for determining the mass flow of the high void fraction fluid flow and the gas flow includes taking into account a pressure drop experienced by the gas phase due to work performed by the gas phase in accelerating the liquid phase.

Fincke, James R. (Idaho Falls, ID)

2003-01-01T23:59:59.000Z

440

Appendix F Stream Flow.xls  

Office of Legacy Management (LM)

Stream Flow Measurement Results Since 2000 Stream Flow Measurement Results Since 2000 This page intentionally left blank Appendix F Stream Flow Measurement Results Since 2000 Collect Date Surface ID Calculated Flow (ft 3 /sec) Comments 1/14/2000 CARB POND TRENCH OUT 0.25 Carb Pond trench outfall 1/14/2000 MNT CR E OF HWY CULV 0.22 MONTEZUMA CREEK 100 FT EAST OF HIGHWAY CULVERT 1/14/2000 MC>CUTOFFTRENCH CLAY 0.19 Montezuma Creek above ground water cutoff trench, clay bottom. 4/14/2000 MIDPOND OUTFALL PIPE 0.26 Middle Pond outfall pipe (groundwater impoundment in old Van Pile area) 4/14/2000 >VANPILE-STEEP/LINED 0.38 Montezuma Creek above old Vanadium Pile, where gradient steepens/lined. 4/14/2000 SW00-01 0.44 MONTEZUMA CREEK 100 FT EAST OF HIGHWAY CULVERT 4/14/2000 SW00-02 0.74 Pipe outfall at east end of millsite

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


441

Colloidal particle deposition in turbulent flow  

SciTech Connect (OSTI)

A theoretical analysis is presented which describes the initial deposition of monodispersed spherical colloidal particles from a steady fully developed turbulent flow onto conduit walls. When the net particle-conduit electrical interaction potential is attractive, particle deposition is shown to be often governed by turbulent hydrodynamics. When the net particle-conduit electrical interaction potential possess a repulsive maximum, particle deposition to first order is uniform and depends solely on electrical interaction effects. The developed theoretical model specialized to orifice deposition with the use of Harwell Flow3D turbulence modelling software qualitatively described the deposition of 0.5 {mu}m silica particles onto glass orifices from an aqueous suspension. The effect of the electrical double layer on the rate of colloidal particle deposition in laminar flow has been described by Spielman and Friedlander (1), Dahneke (2), Bowen et al. (3) and Bowen and Epstein (4). This article describes the extension of their work to colloidal particle deposition under steady fully developed turbulent flow conditions. This article also reports the results of orifice particle deposition experiments which were conducted to qualitatively investigate the developed theoretical model.

Morton, D.S.

1994-05-01T23:59:59.000Z

442

Laminar Entrained Flow Reactor (Fact Sheet)  

SciTech Connect (OSTI)

The Laminar Entrained Flow Reactor (LEFR) is a modular, lab scale, single-user reactor for the study of catalytic fast pyrolysis (CFP). This system can be employed to study a variety of reactor conditions for both in situ and ex situ CFP.

Not Available

2014-02-01T23:59:59.000Z

443

FORTRAN SUBROUTINES FOR NETWORK FLOW OPTIMIZATION ...  

E-Print Network [OSTI]

Mar 13, 2004 ... If it is required that the flow xij be integer, (2) is replaced with ... pute the ?yk component of the direction as the solution of the system of normal ..... Source Code Files ... serve as guides for developing custom applications invoking the ..... approved April 3, 1978, American National Standards Institute, Inc.:.

2004-03-13T23:59:59.000Z

444

Accuracy of Flow Hoods in Residential Applications  

E-Print Network [OSTI]

and Standards, of the U.S. Department of Energy under contract No. DE-AC03-76SF00098. The research reported here supply and return grille airflows in HVAC systems. Depending on hood accuracy, these measurements can for field application problems. As a result, a new standard for flow hood calibration needs to be developed

445

Flow and Changes in Appearance Julie Dorsey  

E-Print Network [OSTI]

. We model the flow as a particle system, each particle represent- ing a "drop" of water. The motion of the water particles is controlled by parameters such as gravity, friction, wind, roughness, and con the rate of absorption of water by the surface and the rate of solu- bility and sedimentation of deposits

Kazhdan, Michael

446

Re: Flow est Hunter, Tom 0  

E-Print Network [OSTI]

Re: Flow est t Hunter, Tom 0 George marsha 'George.Guthrie@NETL.DOE.GOV', 'mcnuu@usgs.gov' 05 analysis Thanks for the quick response Tom Original Message From; George Guthrie NETL Message - - - -- From: "Marcia K McNutt" Cc : Guthrie , George NETL

Fleskes, Joe

447

Mass Flows in Cometary UCHII Regions  

E-Print Network [OSTI]

High spectral and spatial resolution, mid-infrared fine structure line observations toward two ultracompact HII (UCHII) regions (G29.96 -0.02 and Mon R2) allow us to study the structure and kinematics of cometary UCHII regions. In our earlier study of Mon R2, we showed that highly organized mass motions accounted for most of the velocity structure in that UCHII region. In this work, we show that the kinematics in both Mon R2 and G29.96 are consistent with motion along an approximately paraboloidal shell. We model the velocity structure seen in our mapping data and test the stellar wind bow shock model for such paraboloidal like flows. The observations and the simulation indicate that the ram pressures of the stellar wind and ambient interstellar medium cause the accumulated mass in the bow shock to flow along the surface of the shock. A relaxation code reproduces the mass flow's velocity structure as derived by the analytical solution. It further predicts that the pressure gradient along the flow can accelerate ionized gas to a speed higher than that of the moving star. In the original bow shock model, the star speed relative to the ambient medium was considered to be the exit speed of ionized gas in the shell.

Qing-Feng Zhu; John H. Lacy; Daniel T. Jaffe; Thomas K. Greathouse; Matthew J. Richter

2005-06-06T23:59:59.000Z

448

Determinants of Tumor Blood Flow: A Review  

Science Journals Connector (OSTI)

...effect. Seshadri et al. (109) found that heating of RBC led to an increase in r ain large...Casson, N. A flow equation for pigment-oil suspensions of the printing ink type...Scand., 108:159-163, 1980. 114. Price, V. E., and Greenfield, R. E. Anemia...

Rakesh K. Jain

1988-05-15T23:59:59.000Z

449

Finger blood flow monitoring using smart phones  

Science Journals Connector (OSTI)

The use of smart phones in healthcare applications is growing steadily. The inbuilt sensors are used to estimate the value of physiological data from human body. With progressive innovation, smart phone based medical applications will continue to be ... Keywords: finger blood flow, finger pulse, mobile health, smart phone

Shanti Thiyagaraja; Ram Dantu

2013-09-01T23:59:59.000Z

450

Energy flow observables in hadronic collisions  

E-Print Network [OSTI]

We present recent QCD calculations of energy flow distributions associated with the production of jets at wide rapidity separations in high-energy hadron collisions, and discuss the role of these observables to analyze contributions from parton showering and from multiple parton collisions.

F. Hautmann

2012-05-24T23:59:59.000Z

451

Learning Optical Flow Deqing Sun1  

E-Print Network [OSTI]

Learning Optical Flow Deqing Sun1 , Stefan Roth2 , J.P. Lewis3 , and Michael J. Black1 1 Department III, LNCS 5304, pp. 83­97, 2008. c Springer-Verlag Berlin Heidelberg 2008 #12;84 D. Sun et al. several

Black, Michael J.

452

Flow reversal power limit for the HFBR  

SciTech Connect (OSTI)

The High Flux Beam Reactor (HFBR) is a pressurized heavy water moderated and cooled research reactor that began operation at 40 MW. The reactor was subsequently upgraded to 60 MW and operated at that level for several years. The reactor undergoes a buoyancy-driven reversal of flow in the reactor core following certain postulated accidents. Questions which were raised about the afterheat removal capability during the flow reversal transition led to a reactor shutdown and subsequent resumption of operation at a reduced power of 30 MW. An experimental and analytical program to address these questions is described in this report. The experiments were single channel flow reversal tests under a range of conditions. The analytical phase involved simulations of the tests to benchmark the physical models and development of a criterion for dryout. The criterion is then used in simulations of reactor accidents to determine a safe operating power level. It is concluded that the limit on the HFBR operating power with respect to the issue of flow reversal is in excess of 60 MW. Direct use of the experimental results and an understanding of the governing phenomenology supports this conclusion.

Cheng, L.Y.; Tichler, P.R.

1997-01-01T23:59:59.000Z

453

Entrance effects in a developing slug flow  

E-Print Network [OSTI]

The kinetics of a Taylor bubble, as it rises behind a series of other bubbles in a gas-liquid slug flow, have been determined. The rise velocity of a bubble is expressed as a function of separation distance from the bubble ...

Moissis, Raphael

1960-01-01T23:59:59.000Z

454

Planetary science: Venusian hot flow anomalies  

Science Journals Connector (OSTI)

... on 22 March 2008, a space-weather event known as a hot flow anomaly (HFA). Such events occur when electric fields associated with the Sun's solar wind create ... the planet lacks a magnetic field, meaning that the bow shock, and so the HFA, would be much closer in. ...

2012-03-14T23:59:59.000Z

455

Newtonian fluid flow through Microfabricated Hyperbolic Contractions  

E-Print Network [OSTI]

spraying (Barnes et al. 1989). Optimization of these processes requires accurate measurements for measurement of extensional viscosity involves studying the fluid flow through contractions profiled to give extensional viscosity. To remove the effect of shear at the walls of contractions Shaw (1975) proposed the use

456

STRONG FLOWS OF VISCOELASTIC WORMLIKE MICELLE SOLUTIONS  

E-Print Network [OSTI]

range of industrial and commercial applications including agrochemical spraying, inkjet printing strain hardening of their extensional viscosity which can result in an increased resistance to complex extensional viscosity of these fluids has led to significant drag reduction in turbulent flows. However

Rothstein, Jonathan

457

From sideward flow to nuclear compressibility  

SciTech Connect (OSTI)

We show that the differences between the Plastic Ball and DIOGENE experiments on sideward flow make it possible to asses independently, within the transport description of collisions, the effect of density dependence and momentum dependence of the nucleon optical potential. We estimate that the nuclear compressibility [ital K] lies between 180 and 235 MeV.

Pan, Q.; Danielewicz, P. (National Superconducting Cyclotron Laboratory and Department of Physics Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States))

1993-04-05T23:59:59.000Z

458

Proper Orthogonal Decomposition for Flow Calculations  

E-Print Network [OSTI]

with the energy and the species equa­ tions. In addition, we also examined the feasibility and efficiency of POD that POD can be used to efficiently approximate solutions to the compressible viscous flows coupled a chemical reaction in the gas phase above the surface of the film to deposit desired materials onto

459

INSTABILITY AND SURGE DEVELOPMENT IN DEBRIS FLOWS  

E-Print Network [OSTI]

can be explained by two different mechanisms. All waves that rise up near the flood crest run faster, segregation during the flow induces the concentration of boulders at the fronts, contributing to its depth, and boulders, is actually as important as the sediment concentration or the presence of water

Jellinek, Mark

460

Flow of Superfluidity in Porous Media  

Science Journals Connector (OSTI)

......close analogy to the electric conductivity of a superconductor...rise to an observable resistance at tem- peratures...integration over f IS elementary and Fig. 1~ The effective...is so high that the resistance offered by the saddle-point...Fisher5l may offer a high resistance to superfluid flow......

Masakazu Ichiyanagi

1973-08-01T23:59:59.000Z

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


461

Modelling macroeconomic flows related to large ensembles  

E-Print Network [OSTI]

, including, say, oil prices, interest rates, etc; dynamics of shares markets are governed by information are illustrated by flows of a liquid between interconnected reservoirs, where the heights of different reservoirs is changing with time, and movement of the liquid between the reservoirs is governed by gravity, see Figure 1

Schellekens, Michel P.

462

On self-similarities of ergodic flows  

Science Journals Connector (OSTI)

......the weak closure theorem (see [33]) does not hold for this flow, that is, the...combinatorial constructions i ergodic theory', Handbook of dynamical systems, vol. 1B (Elsevier...and equivalence in ergodic theory', Handbook of dynamical systems, vol. 1A (Elsevier......

Alexandre I. Danilenko; Valery V. Ryzhikov

2012-03-01T23:59:59.000Z

463

MSET modeling of Crystal River-3 venturi flow meters.  

SciTech Connect (OSTI)

The analysis of archived Crystal River-3 feedwater flow data reveals a slow and steady degradation of the flow meter measurements during the 1992/1993 operating cycle. MSET can reliably estimate the true flow rate and quantify the degree of departure between the indicated signal and the true flow rate with high accuracy. The MSET computed flow rate could, in principle, be used to provide an improved estimate of the reactor power and hence avoid the revenue loss associated with derating the reactor based on a faulty feedwater flow rate indication.

Bockhorst, F. K.; Gross, K. C.; Herzog, J. P.; Wegerich, S. W.

1998-01-05T23:59:59.000Z

464

The Conjugate Linearized Ricci Flow on Closed 3-Manifolds  

E-Print Network [OSTI]

We characterize the conjugate linearized Ricci flow and the associated backward heat kernel on closed three--manifolds of bounded geometry. We discuss their properties, and introduce the notion of Ricci flow conjugated constraint sets which characterizes a way of Ricci flow averaging metric dependent geometrical data. We also provide an integral representation of the Ricci flow metric itself and of its Ricci tensor in terms of the heat kernel of the conjugate linearized Ricci flow. These results, which readily extend to closed n-dimensional manifolds, yield for various conservation laws, monotonicity and asymptotic formulas for the Ricci flow and its linearization.

Mauro Carfora

2007-10-17T23:59:59.000Z

465

Development of a model to predict flow oscillations in low-flow sodium boiling  

E-Print Network [OSTI]

An experimental and analytical program has been carried out in order to better understand the cause and effect of flow oscillations in boiling sodium systems. These oscillations have been noted in previous experiments with ...

Levin, Alan Edward

1980-01-01T23:59:59.000Z

466

Flow in geothermal wells: Part III. Calculation model for self-flowing well  

SciTech Connect (OSTI)

The theoretical model described predicts the temperature, pressure, dynamic dryness fraction, and void fraction along the vertical channel of two-phase flow. The existing data from operating wells indicate good agreement with the model. (MHR)

Bilicki, Z.; Kestin, J.; Michaelides, E.E.

1981-06-01T23:59:59.000Z

467

Flow visualization around cylinders in a channel flow using Particle Image Velocimetry  

E-Print Network [OSTI]

The objective of the undertaken study was to apply state-of the-art Particle Image Velocimetry to measure full field turbulent flow around cylinders, starting with one cylinder and eventually to a quad cylinder arrangement. Particle Image...

Martinez, Ramiro Serna

2012-06-07T23:59:59.000Z

468

Evaluation of a Close Coupled Slotted Orifice, Electrical Impedance, and Swirl Flow Meters for Multiphase Flow  

E-Print Network [OSTI]

homogenized flow for several pipe diameters downstream of the plate. This characteristic provides a homogeneous mixture at the inlet of the swirl meter, and impedance probe for gas volume fraction measurement (GVF). In order to evaluate the performance...

Cevik, Muhammet

2013-09-11T23:59:59.000Z

469

Validation of an in-flight flow visualization scheme to quantitatively measure vortical flow phenomena  

E-Print Network [OSTI]

A flow visualization measurement scheme was validated in flight. Strake vortex trajectories and axial core velocities were determined using pulsed smoke and high speed video. A gothic strake, operated at an angle of attack of 220 and a Reynolds...

Dorsett, Kenneth Merle

2012-06-07T23:59:59.000Z

470

Wastewater treatment and flow patterns in an onsite subsurface flow constructed wetland  

E-Print Network [OSTI]

Subsurface flow constructed wetlands (SFCWs) are becoming increasingly common as a secondary treatment of onsite domestic wastewater. Even though SFCWs are being used widely, sufficient data has not been collected to determine how parameters...

Stecher, Matthew C

2001-01-01T23:59:59.000Z

471

Numerical investigation of the flow-body interaction of thin flexible foils and ambient flow  

E-Print Network [OSTI]

Flow-induced flapping of flexible thin bodies is oft observed in our day-to-day lives in phenomena such as flag flapping, and is important in a host of engineering applications. Despite its prevalence, however, this ...

Connell, Benjamin S. H

2006-01-01T23:59:59.000Z

472

Structural development of vortical flows around a square jet in cross-flow  

Science Journals Connector (OSTI)

...1324 Structural development of vortical flows...the structural development of the entire...the structural development of the jet wake...computer hardware technology and computational...sewerage outfalls, gas- turbine cooling, and...

2004-01-01T23:59:59.000Z

473

The effect of drag reducing agent in multiphase flow pipelines  

SciTech Connect (OSTI)

The effect of drag reducing agents (DRA) on pressure gradient and flow regime has been studied in horizontal and 2 degree inclination. Experiments were conducted for full pipe, stratified, slug, and annular flow in a 10 cm inside diameter, 18 m long plexiglass section and inclinable flow loops from horizontal to vertical. Superficial liquid velocity between 0.06 and 1.5 m/s and superficial gas velocity between 1 and 14 m/s were studied. The DRA effectiveness was examined for DRA concentrations between 0 and 75 ppm. The results indicate that DRA was effective in reducing the pressure gradients in single and multiphase flow. The DRA was more effective for lower superficial liquid velocities and gas velocities for both single phase and multiphase flow. The DRA was effective to reduce pressure gradients up to 42% for full pipe flow, 91% for stratified flow and up to 35% for annular flow in horizontal pipes. Kang, Wilkens and Jepson (1996) showed that the stratified flow disappears entirely and slug flow dominates the flow regime map in inclined upward flow. In 2 degree inclination, the pressure gradient reduction for slug flow with a concentration of 50 ppm DRA is 28% and 38% at superficial gas velocities of 2 and 6 m/s respectively. Flow regimes maps with DRA were determined in horizontal pipes. The transition to the slug flow with DRA was observed to occur at a higher superficial liquid due to higher liquid flow rates. There is a conspicuous absence of drag reduction work for multiphase (oil-water-gas) flow in horizontal and inclined pipes.

Kang, C.; Vancho, R.M. Jr.; Jepson, W.P. [Ohio Univ., Athens, OH (United States). Dept. of Chemical Engineering; Green, A.S.; Kerr, H. [BP Exp./BP Technology Provision, Sunbury-on-Thames (United Kingdom)

1998-12-31T23:59:59.000Z

474

Nutrient removal efficiency and resource economics of vertical flow and horizontal flow constructed wetlands  

Science Journals Connector (OSTI)

In order to reduce the very high costs of sewage disposal in the new federal states of Germany, more decentralized purification systems need to be established. To attain higher surface water quality, and thereby the acceptance of such systems by governmental authorities, good removal rates for organic substances and also for nutrients (N, P) are necessary. Constructed wetlands for wastewater treatment (reed-bed systems) in Germany and in the USA have been used successfully. This study compares the purification performances of constructed horizontal flow wetlands (HFW) and vertical flow wetlands (VFW), including: (1) a small horizontal flow wetland (HFW); (2) a sloped HFW; (3) a larger HFW; (4) a stratified vertical flow wetland (VFW); and (5) an unstratified VFW. It is shown that both the horizontal flow and vertical flow systems can remove more than 90% of organic load and of total N and P, if there is an effective precleaning step, and if the specific treatment area is great enough (>50 m2/m3 per d). \\{HFWs\\} have an advantage in long-term removal of P because it is bound to organic substances to a high degree. Decentral and semicentral natural treatment systems also save material (76%) and energy (83%) for their function compared with central technical systems.

Volker Luederitz; Elke Eckert; Martina Lange-Weber; Andreas Lange; Richard M Gersberg

2001-01-01T23:59:59.000Z

475

Convective stability of turbulent Boussinesq flow in the dissipative range and flow around small particles  

E-Print Network [OSTI]

We consider arbitrary, possibly turbulent, Boussinesq flow which is smooth below a dissipative scale $l_d$. It is demonstrated that the stability of the flow with respect to growth of fluctuations with scale smaller than $l_d$ leads to a non-trivial constraint. That involves the dimensionless strength $Fl$ of fluctuations of the gradients of the scalar in the direction of gravity and the Rayleigh scale $L$ depending on the Rayleigh number $Ra$, the Nusselt number $Nu$ and $l_d$. The constraint implies that the stratified fluid at rest, which is linearly stable, develops instability in the limit of large $Ra$. This limits observability of solution for the flow around small swimmer in quiescent stratified fluid that has closed streamlines at scale $L$ [A. M. Ardekani and R. Stocker, Phys. Rev. Lett. 105, 084502 (2010)]. Correspondingly to study the flow at scale $L$ one has to take turbulence into account. We demonstrate that the resulting turbulent flow around small particles or swimmers can be described by scalar integro-differential advection-diffusion equation. Describing the solutions we show that closed streamlines persist with finite probability. Our results seem to be the necessary basis in understanding flows around small swimmers.

Itzhak Fouxon; Alexander Leshansky

2014-07-24T23:59:59.000Z

476

Gasliquid two-phase flow patterns in a miniature square channel with a gas permeable sidewall  

E-Print Network [OSTI]

methanol fuel cells. Flow patterns in both vertical upward and horizontal flows were identified using in vertical downward flows; and Kosterin [5] and Brigham et al. [6] discussed flow patterns in inclined-phase flow of air�water mixtures in horizontal pipes, the flow patterns and flow regime maps for five glass

Zhao, Tianshou

477

Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop  

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

Flow Cells for Energy Flow Cells for Energy Storage Workshop to someone by E-mail Share Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Facebook Tweet about Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Twitter Bookmark Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Google Bookmark Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Delicious Rank Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Digg Find More places to share Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications Newsletter Program Presentations Multimedia Conferences & Meetings Annual Merit Review Proceedings

478

FREE CONVECTIVE LAMINAR FLOW WITHIN THE TROMBE WALL CHANNEL  

E-Print Network [OSTI]

LAMINAR FLOW WITHIN THE TROMBE WALL CHANNEL H. Akbarf andLAMINAR FLOW WITHIN THE TROMBE WALL CHANNEL H. Akbari andchannel surfaces of the Trombe wall has been investigated.

Akbari, H.

2011-01-01T23:59:59.000Z

479

Turbulent Transport Reduction by Zonal Flows: Massively Parallel Simulations  

Science Journals Connector (OSTI)

...University, Post Office Box 451,-Princeton, NJ 08543,-USA. * To whom correspondence should be addressed. Email: zlin@pppl.gov Turbulence shear suppression by E -B flows (plasma flows induced by an electric field perpendicular to a magnetic field...

Z. Lin; T. S. Hahm; W. W. Lee; W. M. Tang; R. B. White

1998-09-18T23:59:59.000Z

480

Flow visualization and analysis of aerodynamically detuned supersonic rotors  

Science Journals Connector (OSTI)

The effect of aerodynamic detuning on the supersonic steady and unsteady blade passage flow field is experimentally investigated on a free surface water table by means of color Schlieren and shadowgraph flow v...

C. S. Farmer; S. Fleeter

1988-01-01T23:59:59.000Z

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


481

Portable Liquid Flow Metering for Energy Conservation Programs  

E-Print Network [OSTI]

meters to measure liquids. This paper reviews the principles of ultrasonic flow meters. Applications and costs of ultrasonic versus orifice flow meters are important to consider in energy audits. A discussion follows on 'how' and 'where' to use...

Miles, F. J.

1982-01-01T23:59:59.000Z

482

Security of Information Flow in the Electric Power Grid  

Science Journals Connector (OSTI)

The confidentiality of information in a system can be breached through unrestricted information flow. The formal properties of non-deducibility and non-inference are often used to assess information flow in purel...

Han Tang; Bruce McMillin

2008-01-01T23:59:59.000Z

483

Error estimation and adaptive mesh refinement for aerodynamic flows  

E-Print Network [OSTI]

Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann1 and Paul Houston2 1 Institute of Aerodynamics and Flow Technology DLR (German Aerospace Center) Lilienthalplatz 7

Hartmann, Ralf

484

Foamy Oil Flow and its Role in Heavy Oil Production  

Science Journals Connector (OSTI)

Two?phase oil?gas flow in porous media is often encountered during oil production from oil bearing sedimentary rocks. Traditionally such flow is modeled by extending the Darcy’s law to two?phase flow by employing the concept of saturation dependent relative permeability. This model is remarkably successful as long as the fluid distribution within the porous medium is controlled by capillary forces. Under this condition the two fluids appear to flow in their own continuous flow channels. This flow description is applicable to most reservoir flow scenarios encountered in light oil production. However in primary production of heavy oil under solution?gas drive this flow model often fails to provide a satisfactory match of the observed behaviour.

Brij B. Maini; Bashir Busahmin

2010-01-01T23:59:59.000Z

485

Stochastic and deterministic models for dense granular flow  

E-Print Network [OSTI]

Granular materials such as sand or gravel surround us everyday and yet remain poorly understood. In this thesis, two models are developed for dense granular flow, each capable of predicting flows with accuracy in multiple ...

Kamrin, Kenneth Norman

2008-01-01T23:59:59.000Z

486

Fluid flow and solute transport modeling with lattice Boltzmann models  

E-Print Network [OSTI]

Fluid flow and solute transport modeling with lattice Boltzmann models Ph.D. Proposal: Shadab Anwar with solute transport and fluid flow modeling in porous media using lattice Boltzmann model (LBM). LBM

Sukop, Mike

487

Lattice Boltzmann in micro- and nano-flow simulations  

Science Journals Connector (OSTI)

......Issue: Modelling the mesoscale Lattice Boltzmann in micro- and nano-flow simulations...fundamental perspective. The lattice Boltzmann (LB) method, which originated...micro flow|kinetic theory|lattice Boltzmann| IMA Journal of Applied Mathematics......

Xiaowen Shan

2011-10-01T23:59:59.000Z

488

Heat transfer in channel flow of a micropolar fluid  

Science Journals Connector (OSTI)

The study of heat transfer in channel flow has been done by previous authors for Newtonian and elastico-viscous fluids. It is the aim of the present ... the temperature profile for flow of a micropolar fluid in a...

Renuka Rajagopalan; K. S. Bhatnagar

1969-10-01T23:59:59.000Z

489

Hydrodynamics, heat transfer and flow boiling instabilities in microchannels   

E-Print Network [OSTI]

Boiling in microchannels is a very efficient mode of heat transfer with high heat and mass transfer coefficients achieved. Less pumping power is required for two-phase flows than for single-phase liquid flows to achieve ...

Barber, Jacqueline Claire

2010-01-01T23:59:59.000Z

490

Effects of interstitial flow on tumor cell migration  

E-Print Network [OSTI]

Interstitial flow is the convective transport of fluid through tissue extracellular matrix. This creeping fluid flow has been shown to affect the morphology and migration of cells such as fibroblasts, cancer cells, endothelial ...

Polacheck, William J. (William Joseph)

2010-01-01T23:59:59.000Z

491

Active control of tip clearance flow in axial compressors  

E-Print Network [OSTI]

Control of compressor tip clearance flows is explored in a linear cascade using three types of fluidic actuators; Normal Synthetic Jet (NSJ; unsteady jet normal to the mean flow with zero net mass flux), Directed Synthetic ...

Bae, Jinwoo W

2001-01-01T23:59:59.000Z

492

Inhomogeneity of fluid flow in Stirling engine regenerators  

SciTech Connect (OSTI)

The literature relating to inhomogeneity of flow regenerators is briefly reviewed. It is noted that, in contrast to other applications of regenerators, relatively little attention has been paid to the consequences of flow inhomogeneity for thermal regeneration in Stirling cycle machines. The construction of regenerator capsules for a large stationary Stirling engine is described. A test rig is developed to measure the gas velocity profile across the face of the packed regenerator capsules under steady flow conditions. Measured flow profiles for a number of different matrix materials and construction techniques are presented, and it is noted that stacked-mesh regenerator matrices tend to display marked inhomogeneities of flow. The consequences of flow inhomogeneity for flow friction and regenerator effectiveness are analyzed theoretically, and approximate formulae deduced. One method for reducing flow inhomogeneity in stacked-screen matrice

Jones, J.D. (School of Engineering Science, Simon Fraser Univ. Burnaby, British Columbia (CA))

1989-10-01T23:59:59.000Z

493

Influence of flooding on groundwater flow in central Cambodia  

Science Journals Connector (OSTI)

Cambodia is affected by flooding from the Mekong, Tonle Sap and Bassac ... paper is to highlight the effects of river flooding on groundwater flow using numerical simulation. A two-dimensional groundwater flow mo...

Raksmey May; Kenji Jinno; Atsushi Tsutsumi

2011-05-01T23:59:59.000Z

494

Microsoft Word - Lin_flow_drive_v2.doc  

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

Method for Driving Flows in Plasmas Demonstrated Plasma flows, driven by mode-converted waves in the ion-cyclotron range of frequencies, have been demonstrated for the first time....

495

Triaxial thermopile array geo-heat-flow sensor  

DOE Patents [OSTI]

A triaxial thermopile array geothermal heat flow sensor is designed to measure heat flow in three dimensions in a reconstituted or unperturbed subsurface regime. Heat flow can be measured in conductive or permeable convective media. The sensor may be encased in protective pvc tubing and includes a plurality of thermistors and an array of heat flow transducers produce voltage proportional to heat flux along the subsurface regime and permit direct measurement of heat flow in the subsurface regime. The presence of the thermistor array permits a comparison to be made between the heat flow estimates obtained from the transducers and heat flow calculated using temperature differences and Fourier's Law. The device is extremely sensitive with an accuracy of less than 0.1 Heat Flow Units (HFU) and may be used for long term readings. 6 figs.

Carrigan, C.R.; Hardee, H.C.; Reynolds, G.D.; Steinfort, T.D.

1990-01-01T23:59:59.000Z

496

Large Amplitude Flow Anomalies in Northern Hemisphere Midlatitudes  

Science Journals Connector (OSTI)

The composite of large amplitude flow anomalies identified from extremely large amplitudes of the planetary-scale waves is examined in terms of the temporal and spatial evolution of both the large-scale flow and the storm tracks. The ...

Anthony R. Hansen; Alfonso Sutera

1995-06-01T23:59:59.000Z

497

Triaxial thermopile array geo-heat-flow sensor  

DOE Patents [OSTI]

A triaxial thermopile array geothermal heat flow sensor is designed to measure heat flow in three dimensions in a reconstituted or unperturbed subsurface regime. Heat flow can be measured in conductive or permeable convective media. The sensor may be encased in protective pvc tubing and includes a plurality of thermistors and an array of heat flow transducers arranged in a vertical string. The transducers produce voltage proportional to heat flux along the subsurface regime and permit direct measurement of heat flow in the subsurface regime. The presence of the thermistor array permits a comparison to be made between the heat flow estimates obtained from the transducers and heat flow calculated using temperature differences and Fourier's Law. The device is extremely sensitive with an accuracy of less than 0.1 Heat Flow Units (HFU) and may be used for long term readings.

Carrigan, Charles R. (Tracy, CA); Hardee, Harry C. (Albuquerque, NM); Reynolds, Gerald D. (Tijeras, NM); Steinfort, Terry D. (Tijeras, NM)

1992-01-01T23:59:59.000Z

498

Interpretive geothermal heat flow map of Colorado | Open Energy...  

Open Energy Info (EERE)

Interpretive geothermal heat flow map of Colorado Jump to: navigation, search OpenEI Reference LibraryAdd to library Map: Interpretive geothermal heat flow map of ColoradoInfo...

499

Laser ignition of hypersonic air–hydrogen flow  

Science Journals Connector (OSTI)

An experimental investigation of the behaviour of laser-induced ignition in a hypersonic air–hydrogen flow is ... /s. This study is the first comprehensive laser spark study in a hypersonic flow and demonstrates ...

S. Brieschenk; H. Kleine; S. O’Byrne

2013-09-01T23:59:59.000Z

500

Feedback control of flow separation using synthetic jets  

E-Print Network [OSTI]

The primary goal of this research is to assess the effect of synthetic jets on flow separation and provide a feedback control strategy for flow separation using synthetic jets. The feedback control synthesis is conducted based upon CFD simulation...

Kim, Kihwan

2006-04-12T23:59:59.000Z