National Library of Energy BETA

Sample records for vevent uid t145429cdt

  1. Mixed hybrid nite element for a three dimensional uid structure interaction problem

    E-Print Network [OSTI]

    Murea, Cornel

    of the airship), energy industry (transport of the uid using elastic tanks). We are interested in computing

  2. UID-GaN doping1016 cm-3 2 m 5 m2 m

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2 µm Drain Silicon UID-GaN ­ doping1016 cm-3 1.1 µm 2 µm GateSource 2 µm 5 µm2 µm AirAir Al0.25GaN ­ doping1015 cm-3 30 nm Drain Silicon UID-GaN P-GaNSource AirAir AlxGaN Drain Silicon UID-GaN GateSource AirAir AlxGaN Gate (a) (b) (c) Drain Silicon UID-GaN P-GaNSource AirAir AlxGaN Gate (d) P-GaN P-GaN 30

  3. Mossbauer Spectra of Ferro uids Characterized Using a Many State Relaxation Model for Superparamagnets

    E-Print Network [OSTI]

    Ryan, Dominic

    Mossbauer Spectra of Ferro uids Characterized Using a Many State Relaxation Model and a log-normal size distribution we are able to #12;t Mossbauer spectra which span temperatures from relaxation rates. With this model, we have #12;tted the Mossbauer spectra of two Fe3O4 ferro uids, from 12 K

  4. An automated system for measuring gas production from forages inoculated with rumen uid and its use

    E-Print Network [OSTI]

    Griffith, Gareth

    An automated system for measuring gas production from forages inoculated with rumen ¯uid and its that has been developed to measure the production of fermentation gas from ruminant livestock feeds and the kinetics of fermentation (Theodorou et al., 1994, 1998). Gas production is measured from the in vitro

  5. Numerical simulation of seismicity due to uid injection in a brittle poroelastic medium

    E-Print Network [OSTI]

    is based on the combination of a model of seismicity in dry rocks and a model of pore £uid pressure di^Coulomb rupture criterion and to the volumetric elastic deformations, which in turn perturb the pore pressure radiation, which feeds back into pore pressure perturbations. They also show that, as expected, the amount

  6. On the eective thermal conductivity of a three-dimensionally structured uid-saturated metal foam

    E-Print Network [OSTI]

    Daraio, Chiara

    thermal conductivity to a large extent, a fact that must be dealt with in the foam manufacturing process thermal conductivity in the volume averaged homogeneous energy equation. Antohe et al. [11] also requiredOn the eective thermal conductivity of a three- dimensionally structured ¯uid-saturated metal foam

  7. UID-GaN doping1016 cm-3 2 m 5 m2 m

    E-Print Network [OSTI]

    Boyer, Edmond

    2 µm Drain Silicon UID-GaN ­ doping1016 cm-3 1.1 µm 30 nm 2 µm GateSource 2 µm 5 µm2 µm AirAir Al0.25GaN ­ doping1015 cm-3 30 nm Scalable normally-off MIS-HEMT using Fluorine implantation below-Electron-Mobility-Transistor (MIS-HEMT) is proposed. The design is based on the implantation of fluorine ions in the GaN layer below

  8. R E S E A R C H A R T I C L E Potential pathogenic bacteria in metalworking uids and aerosols

    E-Print Network [OSTI]

    Angenent, Lars T.

    R E S E A R C H A R T I C L E Potential pathogenic bacteria in metalworking £uids and aerosols from metalworking processing aerosolize bacterial cells and may cause dermatologic and respiratory effects in exposed workers. We quantified and identified the bacterial load for metalworking fluid and aerosol

  9. LEAVE WITHOUT PAY REQUEST * Name (Last, First, Middle) UID

    E-Print Network [OSTI]

    Zeng, Ning

    FOR THE PERIOD (Month/Day/Year) / / to / / THIS REQUEST IS (Check One): New Partial LWOP to % Extension Change upon termination of the Leave Without Pay. I have been notified of the Consolidated Omnibus Budget

  10. Steady crack growth in elasticplastic uid-saturated porous media

    E-Print Network [OSTI]

    Bigoni, Davide

    at the crack-tip were analyzed by van den Hoek et al. (1993) and Mohr-Coulomb elastoplasticity was considered a combined ®nite dierence/®nite element technique. In this article, an asymptotic solution is obtained criterion with volumetric non-associative ¯ow law and isotropic hardening. The technique used to solved

  11. UIC Brand and MessagIng gUIde Our Story

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    GUIDE 1 #12;smart accessible superior education confident global urban world-class city hardworking our status as a public university and the diversity of this world-class city. Approachable We offer rank among the top in the nation, and our graduates become leaders in their chosen fields. Smart We

  12. Shear cell rupture of nematic liquid crystal droplets in viscous ?uids.

    E-Print Network [OSTI]


    Moving interface problems are ubiquitous in the study of mixtures of fluids, solids ... When the fluid is non-Newtonian, observations are often dramatically altered.

  13. FP12 -16:40 Pmceedlng801 UID31.t Codmnw

    E-Print Network [OSTI]

    Antsaklis, Panos

    MODELING AND ANALYSIS OF HYBRID CONTROL SYSTEMS James. A. Stiver Dept. of Elecmcal Engineering Universityof in the control field to refer to systems with both analog and digital components. A common example of a hybrid to analyze and aid in the design of hybrid control systems. These methods relate to the design

  14. Page 1IDM UID: QZZERG 2015, ITER Organization TRANSP Users' Group Meeting, 23rd March 2015

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    ­ Supports Plasma Operations and Plasma Research ­ Extensive set of "Use Cases" requiring broad spectrum and Plasma Research ­ Contributed and validated by ITER Members · Workflow Engine ­ To orchestrate execution

  15. Buoyancy eects on heat transfer and temperature proles in horizontal pipe ow of drag-reducing uids

    E-Print Network [OSTI]

    Aguilar, Guillermo

    Buoyancy eects on heat transfer and temperature pro®les in horizontal pipe ¯ow of drag 2000 Elsevier Science Ltd. All rights reserved. 1. Introduction In heated ¯ows in horizontal pipes February 2000 Abstract We have studied the extent to which buoyancy eects in horizontal pipe ¯ows of drag

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

    E-Print Network [OSTI]

    Chrisman, Cameron


    uid simulator in which full ?uid cells are colored blue, ?solver is which grid cells are full, and which are empty,uid simulator in which full ?uid cells are colored blue, ?

  17. MATHEMATICAL METHODS IN THE APPLIED SCIENCES Math. Meth. Appl. Sci. 2002; 25:115139 (DOI: 10.1002/mma.276)

    E-Print Network [OSTI]

    pore pressure, if the compression is fast relative to the uid ow rate. Conversely, an increase in pore the pore- uid pressure and solid stress ÿelds were described by Biot [3]. The basic constitutive equations and to the pressure arising from the pore uid. Time- dependent uid ow is incorporated by combining the uid mass

  18. Seafloor geodetic measurements and modeling of Nazca-South America plate convergence

    E-Print Network [OSTI]

    Gagnon, Katie L.


    Increased ?uid pressure allows stable sliding by decreasinghigh ?uid pressures may contribute to stable sliding (Brownsliding is likely caused by a combination of di- agenetic, metamorphic and ?uid pressure

  19. Spatially Modulated Structures in Convective Systems

    E-Print Network [OSTI]

    Kao, Hsien-Ching


    Mode in Pattern Formation Convection in a horizontal ?uid layer rotating about the vertical or subject

  20. Numerical simulations of stratified fluid flow over topography near resonance

    E-Print Network [OSTI]

    Brown, Harmony Rose


    tidal ?ow over isolated topography. Deep Sea Research II,strati?ed ?uid ?ow over topography. J. Fluid Mech. , [22] I.strati?ed ?uid ?ow over topography near resonance A thesis

  1. Cohomological Invariants of Algebraic Tori

    E-Print Network [OSTI]

    Blinstein, Semyon


    High Porosity Silica Aerogels. ” J. Non-Crystalline SolidsW.P. Halperin. “Anisotropic Aerogels for Studying Super?uidCompressed Silica Aerogels for the Study of Super?uid 3

  2. Experimental and Analytical Studies on Pyroelectric Waste Heat Energy Conversion

    E-Print Network [OSTI]

    Lee, Felix


    ect of working ?uids on organic Rankine cycle for waste heatof such devices. Organic Rankine cycles and Stirling engines

  3. Homogeneous percolation versus arrested phase separation in attractively-driven nanoemulsion

    E-Print Network [OSTI]

    Doyle, Patrick S.

    ,2 paints, drilling uids, templates for porous materials3 and advanced inks designed for 3D printing

  4. Eddy fluxes in baroclinic turbulence

    E-Print Network [OSTI]

    Thompson, Andrew F.


    Gill 1982), which transport warm (cold) ?uid poleward (heat transport. Panel (a) shows how warm and cold patches

  5. User information for WinGridder Version 3.0

    E-Print Network [OSTI]

    Pan, Lehua


    which is one of the four fault-rock names. 10024-UID-3.0-00Section; 10024-UID-3.0-00 3. Select Cross sectionthe next window. 10024-UID-3.0-00 Step 3. Generate the 3-D

  6. Climate and Transportation Solutions: Findings from the 2009 Asilomar Conference on Transportation and Energy Policy

    E-Print Network [OSTI]

    Sperling, Daniel; Cannon, James S.


    as systems to improve exhaust waste heat recovery Continuingpotentially come from waste heat recovery. Current dieselboiling a ? uid using the waste heat and driving a turbine

  7. Elementary Vortex Processes in Thermal Superfluid Turbulence

    E-Print Network [OSTI]

    Kivotides, Demosthenes; Wilkin, S. Louise


    a complex system of vortex tubes has only (a vigorouslyIn this context, the vortex tube model (VTM) of Kivotidesstraight normal ?uid vortex tube, suggested an explicit

  8. Laminin ?2 fragments are increased in the circulation of patients with early phase acute lung injury

    E-Print Network [OSTI]


    with early phase acute lung injury ing ?uids of patientsepithelial repair in acute lung injury—a translationalmatrix biology in the lung. Am J Physiol Lung Cell Mol

  9. Effect of threading dislocation density on Ni/n-GaN Schottky diode I-V characteristics

    E-Print Network [OSTI]

    Arehart, A R; Moran, B; Speck, J S; Mishra, U K; DenBaars, S P; Ringel, S A


    on two types of GaN templates on sapphire substrates toepitaxially overgrown? substrate. The uid n-GaN layers were

  10. Welcome to Ying He's Homepage

    E-Print Network [OSTI]

    Ying He

    Numerical Analysis, Scientific Computing with Applications in Fluid ... with Jie Shen) A pressure-correction projection method for non-linear no-slip ?uid structure ...

  11. Imaging and modeling of flow in porous media using clinical nuclear emission tomography systems and computational fluid dynamics

    E-Print Network [OSTI]

    Boutchko, R.


    emission tomography systems and computational fluid dynamicsa computational ?uid dynamics (CFD) model of the systemthe computational domain. A Cartesian coordinate system was

  12. Recyclable synthesis, characterization, and antimicrobial activity of chitosan-based polysaccharide composite materials

    E-Print Network [OSTI]

    Reid, Scott A.

    ). In this method, [BMImþ ClÀ ], an ionic liq- uid (IL), was used as a green solvent to dissolve and synthe- size

  13. Deep water gives up another secret

    E-Print Network [OSTI]

    Manning, CE


    water gives up another secret Craig E. Manning 1 Departmentstep toward unlocking the secrets of Earth’s deep ?uids. 1

  14. On the relationship between stress and elastic strain for porous and fractured rock

    E-Print Network [OSTI]

    Liu, Hui-Hai


    tectonic stress and pore pressure changes. Geophysics 2005;KB. Effects of stress, pore pressure, and pore ?uids on bulkchanges from pore- pressure variation. Geophysics 2006;71:

  15. Modeling broadband poroelastic propagation using an asymptotic approach

    E-Print Network [OSTI]

    Vasco, Donald W.


    for coupling porous f ow and geomechanics, SPE Journal, 11,modeling of f uid f ow and geomechanics is vast but lacking

  16. A Numerical Algorithm for Single Phase Fluid Flow in Elastic Porous Media

    E-Print Network [OSTI]

    Ewing, Richard E.

    algorithm. KEYWORDS: geomechanics, uid ow, elastic deformation, porous media 1 Introduction Mechanical, petroleum, and environmental engineering for several decades. While considering the impact of the rock

  17. Date: 45/2010 11:44:02 AM Call #: 622.159 ln8 Journal Title ...

    E-Print Network [OSTI]

    geomechanics. Volume: 17 issue: ... some trends can be recognized in petroleum reservoir studies, in particular, problems dealing with. ?uid-?ow—stress ...

  18. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS Int. J. Numer. Meth. Fluids 2006; 50:10031027

    E-Print Network [OSTI]

    Xu, Kun

    models in use for the simulation of certain uid ow phenomena. Dam-break waves, bore wave propagation, hydraulic jumps, roll-waves in open channel ow, waves breaking on sloping beaches, among others, can indicates hydraulic jumps or bores when they occur on the surface of hydraulic uid and is comparable

  19. JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER Vol. 13, No. 4, OctoberDecember 1999

    E-Print Network [OSTI]

    Xu, Xianfan

    , it has been proposed that nanometer-sizedparticles could be suspended in industrial heat transfer uidsJOURNAL OF THERMOPHYSICS AND HEAT TRANSFER Vol. 13, No. 4, October­December 1999 Thermal in water, vacuum pump uid, engine oil, and ethylene glycol. Experimental results show that the thermal

  20. RAL-TR-2001-023 Dual variable methods for mixed-hybrid nite element

    E-Print Network [OSTI]

    Mihajlovic, Milan D.

    -state equation for the potential uid ow in porous media combines Darcy's law for the velocity u#19;#16;k 3 , and Mirek T#23;uma 3 ABSTRACT Mixed-hybrid #12;nite element discretization of the Darcy's law and the continuity equation that describe the potential uid ow problem in porous media leads

  1. How to align field guides and standards to the Standard Work...

    Office of Environmental Management (EM)

    P rogram Q uality W ork P lan Training a nd T echnical A ssistance Aligning E xis,ng F ield G uides --- S tep 1 : I den,fy T opics Air Sealing and Insulating Attic Access 56...

  2. Modeling Ozone Removal to Indoor Materials, Including the Effects of Porosity, Pore Diameter, and Thickness

    E-Print Network [OSTI]

    Gall, Elliott T; Siegel, Jeffrey A; Corsi, Richard L


    C. Ozone deposition velocities, reaction probabilities andreaction phenomena described by a single parameter, the ozone deposition velocity,velocity, v t (m h ?1 ), a characteristic of the ?uid mechanics of a space, and the reaction

  3. Displacement speeds in turbulent premixed flame simulations

    E-Print Network [OSTI]

    Day, Marcus S.; Shepherd, Ian G.; Bell, J.; Grcar, Joseph F.; Lijewski, Michael J.


    elds for reaction rate progress and ?uid velocity. Thefor the velocity ?elds and the scalar measure of reactionvelocity and the temperature. To evaluate the displacement speed we de?ne a reaction

  4. Vascular pathology in the aged human brain

    E-Print Network [OSTI]

    Grinberg, Lea Tenenholz; Thal, Dietmar Rudolf


    vascular pathology, and the AD brain. Neurology 65: 259–265brospinal ?uid from the rat brain. Acta Neuropathol (Berl)and Alzheimer’s disease in the brains of elderly individuals

  5. Atmos. Chem. Phys., 13, 1118711194, 2013

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    ) are found in the troposphere. In the stratosphere, liq- uid aerosols originate from gases like carbonyl sulfide (OCS) (Brühl et al., 2012) and sulfur dioxide (SO2), which are re- leased during volcanic

  6. Parameter Estimates for High-Level Nuclear Transport in Fractured ...

    E-Print Network [OSTI]


    Oct 11, 2001 ... the fracture system (see [13]) and uid capacity and nuclear decay within the ..... tine application of energy inequality methods leads to a demonstration .... tional Conference on High Level Radioactive Waste Management, Las.

  7. Publications -- Jie Shen

    E-Print Network [OSTI]

    (with X. Yang, G. Forest and C. Liu) Shear cell rupture of nematic liquid crystal droplets in viscous ?uids. J. Non-Newtonian Fluid Mech. 166:487–499 (2011).

  8. Identification of toxicants in cinnamon-flavored electronic cigarette refill fluids

    E-Print Network [OSTI]

    Talbot, Prue


    on the Ruyan e-cigarette cartridge and inhaled aerosol.of electronic cigarette cartridges, re?ll solutions, andEC consisted of a cartridge with nicotine-containing ?uid

  9. Flow Instabilities During Injection of CO2 into Saline Aquifers

    E-Print Network [OSTI]

    Garcia, Julio E.; Pruess, Karsten


    processes in oil reservoirs. Petrol. Trans. AIME, Vargaftik,by gas or water drive. Petrol. Trans. AIME, 195:91–98.uid displacement in sands. Petrol. Trans. AIME, x 10 T (s) (

  10. GPU programming for real-time watercolor simulation 

    E-Print Network [OSTI]

    Scott, Jessica Stacy


    This thesis presents a method for combining GPU programming with traditional programming to create a ?uid simulation based watercolor tool for artists. This application provides a graphical interface and a canvas upon which artists can create...

  11. Physica A 295 (2001) 1730

    E-Print Network [OSTI]

    Stanley, H. Eugene


    that may be necessary to move statistical physics from the description of idealized ows in the limit away (e.g., 1 km) from the original well and pumping some other uid, such as water, into this second

  12. A hybrid fluid simulation on the Graphics Processing Unit (GPU) 

    E-Print Network [OSTI]

    Flannery, Rebecca Lynn


    This thesis presents a method to implement a hybrid particle/grid uid simulation on graphics hardware. The goal is to speed up the simulation by exploiting the parallelism of the graphics processing unit, or GPU. The ...

  13. Relationship of compaction bands in Utah to Laramide fault-related folding Richard A. Schultz

    E-Print Network [OSTI]

    Geomechanics--Rock Fracture Group, Department of Geological Sciences and Engineering/172, University of Nevada localization in rock that can impede subsurface uid ow and thus are also important to groundwater and petroleum

  14. International journal of Rock Mechanics 81 Mining Sciences

    E-Print Network [OSTI]


    Jun 22, 2013 ... processes for carbon sequestration in deep saline aquifers The geomechanics ... water aquifers and the ground surface (because C02 viscosity and ...... improvement of ?uid recovery estimations in reservoir engineering. In:.

  15. Numerical Modeling of Hydraulic Fracturing in Oil Sands

    E-Print Network [OSTI]


    as follows. First, a neat uid, such as water (called. 1. ... Department of Civil and Environmental Engineering,. University ... thick deposits in deep and semi-deep underground layers. ... hydrofracturing, in which hot water/steam is injected into the ...

  16. Journal of Computational Acoustics, FREQUENCY DOMAIN WAVE PROPAGATION MODELLING

    E-Print Network [OSTI]

    Sheen, Dongwoo

    #11;ect de gas, brine or oil and gas-brine or gas-oil pore uids on seismic velocities. NumericalJournal of Computational Acoustics, f c IMACS FREQUENCY DOMAIN WAVE PROPAGATION MODELLING

  17. Thermomechanical Constitutive Modeling of Viscoelastic Materials undergoing Degradation 

    E-Print Network [OSTI]

    Karra, Satish


    models. In the area of viscoelastic uids, the K-BKZ integral model [18], [19] has been extensively used. Recently, a thermodynamic framework has been developed by Rajagopal and co-workers [20], [21] that has been shown to model a variety of responses... production. ? te instantaneous elasticity t permanent set Fig. 2.: Illustration of a viscoelastic uid that shows instantaneous elasticity in creep. 5 aging, semiconductor, and automobile industries. In the aerospace industry, due to their extreme...

  18. Economic and Conservation Evaluation of Capital Renovation Projects: United Irrigation District of Hidalgo County (United) – Rehabilitation of Main Canal, Laterals, and Diversion Pump Station – Final

    E-Print Network [OSTI]

    Rister, M. Edward; Lacewell, Ronald D.; Sturdivant, Allen W.

    TR-288 March 2006 Economic and Conservation Evaluation of Capital Renovation Projects: United Irrigation District of Hidalgo County (United) – Rehabilitation of Main Canal, Laterals, and Diversion Pump Station – Final M. Edward Rister Ronald D... be limited to the UID and their consulting engineer, the USBR, and the TWDB. Only after the USBR has scored and finalized the next grouping of irrigation districts’ proposed capital-rehabilitation projects will the final results for UIDs project be made...

  19. A hybrid fluid simulation on the Graphics Processing Unit (GPU)

    E-Print Network [OSTI]

    Flannery, Rebecca Lynn


    . . . . . . . . . . . . . . 13 E. GPU Simulations . . . . . . . . . . . . . . . . . . . . . . . 14 III METHODOLOGY : : : : : : : : : : : : : : : : : : : : : : : : : 16 A. The Programmable GPU . . . . . . . . . . . . . . . . . . . 16 B. Computation on the GPU...) community and has since been adapted for use in computer graphics. In this method, a set of massless marker particles is used to track the position of the uid. The particles have no e ect on the motion of the uid but are used only to determine whether a...

  20. Maximum Tension: with and without a cosmological constant

    E-Print Network [OSTI]

    Barrow, John D.; Gibbons, G. W.


    (and the ?uid pressure, p) diverges even though a; _a and the ?uid density ? remain ?nite, even though ? + 3p > 0 always. 2 The e¤ect of the cosmological constant Recently, David Thornton (private communication) has raised the question of how... of a mass-radius diagram (Carr and Rees, 1979, Barrow and Tipler, 1986). All bodies, at rest, may be assigned a mass M and a radius or size R. Since inertial mass, passive gravitational mass, and active gravitational mass 7 are equal to a high degree...

  1. KINEMATIC FAST DYNAMO PROBLEMS Stars and planets possess magnetic elds that permanently change. Earth, for

    E-Print Network [OSTI]

    Khesin, Boris A.

    CHAPTER V KINEMATIC FAST DYNAMO PROBLEMS Stars and planets possess magnetic elds that permanently that the time pattern of the switches forms a Cantor-type set on the time scale (see AnS]). The mechanism the subject of dynamo theory. Kinematic dynamo theory studies what kind of uid motion can induce exponential

  2. Subsurface Trapping of Oil Plumes in Stratification: Laboratory Investigations David Adalsteinsson,1,2,3

    E-Print Network [OSTI]

    Camassa, Roberto

    Subsurface Trapping of Oil Plumes in Stratification: Laboratory Investigations David Adalsteinsson the Deepwater Horizon Gulf oil spill can be trapped as they rise through an ambient, strati ed uid. The addition and theory on trapping/escape of plumes containing an oil/water/surfactant mixture released into nonlinear

  3. Stabilization of tokamak plasma by lithium streams L. E. Zakharov,

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    -boundary magnetohydrodynamic instabilities in tokamaks by liquid lithium streams driven by magnetic propulsion is formulated proposed a mechanism of magnetic propulsion for driving fast lithium streams along the plasma facing by an external power source and B is the tokamak magnetic #12;eld. The magnetic pressure, created in the uid

  4. Copyright c 200x Tech Science Press CMES, vol.x, no.x, pp.1-12, 200x Perfectly matched layer for acoustic waveguide modeling --benchmark

    E-Print Network [OSTI]

    Lu, Ya Yan

    waveg- uides, one-way wave equations. 1 Introduction As a simple model used in ocean acoustics [Jensen layer. In numerical sim- ulations for sound waves in the ocean, for example using the Parabolic Equation to solve a range- dependent benchmark problem (wedge with penetrable bottoms) [Jensen and Ferla (1990

  5. Forecasting the Market Penetration of Energy Conservation Technologies: The Decision Criteria for Choosing a Forecasting Model

    E-Print Network [OSTI]

    Lang, K.


    - However, analysis has been hanhly critici~ed. Extensive Eati....ted for 2 petroleUID refininq technoloqies Account-s for Effects of: V Economics Profihbility V V Size of Investment V V V V V V V V VI Industry Growth Equip/Useful Life...

  6. D. A. Banks G. Giuliani B. W. D. Yardley A. Cheilletz

    E-Print Network [OSTI]

    Banks, David

    in Colombia: ¯uid chemistry and the role of brine mixing Received: 9 April 1999 / Accepted: 14 March 2000 that in each region brines associ- ated with emerald mineralisation range between two extremes with many with the calcic brine caused pre- cipitation of ¯uorite and parisite. Introduction The common association

  7. On the Collapse of Tubes Carried by 3D Incompressible Flows

    E-Print Network [OSTI]

    Euler solution is a con- stricting vortex tube. Recall that a vortex line in a uid is an arc on an integral curve of the vorticity !(x; t) for #12;xed t, and a vortex tube is a tubular neighborhood in R 3 #12; On the Collapse of Tubes Carried by 3D Incompressible Flows 2 routinely sees that vortex tubes

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

    E-Print Network [OSTI]

    Manga, Michael

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

  9. 16 CSA News March 2013 thanol from corn has been the primary biofuel for liq-

    E-Print Network [OSTI]

    DeLucia, Evan H.

    16 CSA News March 2013 E thanol from corn has been the primary biofuel for liq- uid fuels in the United States, but perennial cellulosic biofuels are on the horizon. Intensive corn production with large of nitrogen losses on large, tile-drained fields planted with perennial biofuels in the Midwest of the United

  10. 12 November 2009 High-Performance Photonic Integrated

    E-Print Network [OSTI]

    Coldren, Larry A.

    ) chip to function as the switch fabric of an all-optical router ­ Line rate: 40 Gbps / channel ­ Total;12 November 2009 8 x 8 MOTOR Chip: (40 Gb/s per channel) SOA ­ Mach-Zehnder Wavelength Router Deeply-Etched Ridge Surface Ridge Buried-Rib 450 nm UID InP Implant Buffer Layer 30 nm 1.3Q Stop

  11. Report no. 00/04 An introduction to the adjoint approach to design

    E-Print Network [OSTI]

    Pierce, Niles A.

    Computing Laboratory Numerical Analysis Group Wolfson Building Parks Road Oxford, England OX1 3QD March University Computing Laboratory, Oxford, OX1 3QD, UK. Niles A. Pierce California Institute of Technology are an active area of research in computational uid dynamics, particularly for aeronautical applications

  12. Annealing Thin Colloidal Crystals with Optical Gradient Forces Pamela T. Korda and David G. Grier

    E-Print Network [OSTI]

    Grier, David

    of defects yields large defect-free domains. Uniform colloidal microspheres dispersed in a uid medium have, they are of fundamental interest as model systems for studying the microscopic mechanisms of crystalliza- tion and melting by sedimentation onto lithographically de#12;ned templates [9] has been very suc- cessful in creating well

  13. APS/123-QED Force balance at the transition from selective withdrawal to viscous entrainment

    E-Print Network [OSTI]

    Gardel, Margaret

    APS/123-QED Force balance at the transition from selective withdrawal to viscous entrainment Fran- uid from the upper layer is withdrawn, is thus succeeded by the viscous entrainment regime, in which) Selective withdrawal and viscous entrainment regimes (superposed images). Liquid is withdrawn at vol- ume

  14. EART 265 Lecture Notes: Boundary Layers We're interested here mainly in boundary layers relevant to planets, i.e. those of planetary atmo-

    E-Print Network [OSTI]

    Nimmo, Francis

    and the surface, thus mediating all interactions between the two. If we look back at the Navier-Stokes equations of a solid (or liquid in the case of gas ows) where diusion is non-negligible. It is characterized by strong then promotes mixing. Outside the boundary layer, uid often mixes only very slowly because turbulence

  15. Fiber coating with surfactant solutions Amy Q. Shen and Blake Gleason

    E-Print Network [OSTI]

    . Typically the coating is a thin layer of a liquid applied to a solid substrate in a dynamic manner different surfactant solutions. The classic film-coating problem dates back to early work of Landau, many important coating liq- uids are complex fluids consisting of surfactant solutions, mixed

  16. Turbulence, Horizontal Convection, and the Ocean's Meridional Overturning

    E-Print Network [OSTI]

    Paparella, Francesco

    is its diusivity, namely the ability to cause rapid mixing and increased rates of momentum, heat is actually rather old, and goes back to the views of Lewis Fry Richardson: Big whirls have little whirls required to move a solid object at constant speed through a uid is independent of the viscosity


    E-Print Network [OSTI]

    Russell, Thomas F.

    -making in the petroleum industry, a wide range of physical length scales is encountered. Rock properties, such as porosity and permeability of the porous medium, and rock- uid properties important to ow, such as relative permeability.e., variations in the above-listed properties, on all length scales in this range. For lack of a better

  18. V. Caselles J.M. Morel y

    E-Print Network [OSTI]

    Caselles, Vicent

    Irrigation V. Caselles #3; , J.M. Morel y Abstract In many natural ow systems a uid ow network, in particular to show the feasibility of an irrigation system which is an open set containing the source discuss the irrigation phenomena from a mathematical point of view and we prove the existence of maximal

  19. A Fast Algorithm for Moving Interface Problems S. Dutta1, J. Glimm1 2, J. W. Grove3, D. H. Sharp4, and Y. Zhang1

    E-Print Network [OSTI]

    Zhang, Yongmin

    is the uid velocity, E = e + 1 2 v v is the total speci c energy with the speci c internal energy e, p upwards. The equations (1), (2) (3) describe the conservation laws of mass, momentum, and total energy-shock oscillations are reduced at the tracked fronts. Front tracking as implemented in the code FronTier includes

  20. Understanding and Improving App Installation Security Mechanisms through Empirical Analysis of Android

    E-Print Network [OSTI]

    Van Oorschot, Paul

    of Android David Barrera Jeremy Clark Daniel McCarney Paul C. van Oorschot School of Computer Science of the security decisions made by the Android op- erating system during the app installation process: update integrity and UID assignment. To inform our analysis, we collect a dataset of Android application metadata

  1. Computational Solid Mechanics using a Vertex-based Finite Volume Method

    E-Print Network [OSTI]

    Taylor, Gary

    Computational Solid Mechanics using a Vertex-based Finite Volume Method G. A. Taylor, C. Bailey and using nite volume (FV) methods for computational solid mechanics (CSM). These methods are proving]. As a contemporary, the FV method has similarlyestablished itself within the eld of computational uid dynamics (CFD

  2. An experimental investigation of the countercurrent flow limitation

    E-Print Network [OSTI]

    Solmos, Matthew Aaron


    codes such as MELCOR, MAAP, and SCDAP/RELAP. Experiments were conducted to determine the CCFL for a 3-inch inner diameter smooth tube with an annular liquid lm and air injection from the bottom. The size of the test section and the range of working uid...

  3. A comparison of two CFD packages and engineering formulae

    E-Print Network [OSTI]

    Vuik, Kees

    -Stokes equations for a turbu- lent ow in a complicated 3D con guration in a reasonable time. For this reason of this Journal may be reproduced in any form, by print, photoprint, microfilm, or any other means without the energy equation. We consider two dimensional ow of an incompressible uid. In Cartesian co

  4. Level Set Based Simulations of Two-Phase Oil-Water Flows in Pipes

    E-Print Network [OSTI]

    Soatto, Stefano

    the assumption that the densities of the two uids are di#11;erent and that the viscosity of the oil core is veryLevel Set Based Simulations of Two-Phase Oil-Water Flows in Pipes Hyeseon Shim July 31, 2000 Abstract We simulate the axisymmetric pipeline transportation of oil and water numerically under

  5. Numerical Simulation of Compositional Fluid Flow in Porous Media

    E-Print Network [OSTI]

    Ewing, Richard E.

    variables is developed for modeling the enhanced oil recovery pro- cesses. A mixed #12;nite element method to predict the reservoir performance under various exploita- tion schemes. In many enhanced oil recovery. Computational results for two- and three-phase multi-component uid ow occurring in enhanced oil re- covery

  6. Exact results for generalized Gassmann's equations in composite

    E-Print Network [OSTI]

    and the bulk modulus K #30; associated with the pore volume when the uid pressure (p f ) and con#12;ning pressure (p) are increased, keeping the di#11;erential pressure (p d = p p f ) #12;xed. These moduli conglomerate and the drained phases, and the porosities in each phase. The pore structure of each phase

  7. Seismicity induced by seasonal groundwater recharge at Mt. Hood, Oregon

    E-Print Network [OSTI]

    Manga, Michael

    and narrow-width pore-fluid pressure signal. Time delays between this seasonal groundwater recharge-fluid pressure fraction, PP/P0W0.1, of the applied near-surface pore-fluid pressure perturbation, P0W0.1 MPa Elsevier B.V. All rights reserved. Keywords: hydroseismicity; groundwater; pore-£uid pressure; permeability

  8. Optimal Design for Problems Involving Flow and Transport Phenomena in Saturated

    E-Print Network [OSTI]

    of injection wells p set of model parameters q Darcy velocity, or volumetric ux p uid pressure q y ; q z maximum injection rate Q T total net pumping rate rate Q e T total extraction rate Q max T maximum total

  9. 24 December 1998 Z .Physics Letters B 444 1998 231236

    E-Print Network [OSTI]

    Bauer, Wolfgang

    , Faculty of Sci- ence, Department of Physics, Abbassia 11566, Cairo, Egypt. had some success in modeling by fractal shapes. In contrast, the liq- uid-gas phase transition is first order, and clusters can appear far lattice gas model 17,1

  10. Faculty of Mathematics and Physics Charles University in Prague

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    theory of the geomagnetic eld source was Gilbert's idea of a permanent magnet within the Earth. It had to the presence of magnetic eld, the motion of the uid generates electric currents, which are responsible for the generation of magnetic eld according to the Ampere law. As we will show in Chapter 2, such a behaviour

  11. Development of a Parallel FVM based Groundwater Flow Model

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    . In this equation v denotes the Darcy-velocity of the uid (water) [m=s], q denotes the source / sink term [m 3 =(m. The momentum equation is simpli#12;ed yielding the well-known Darcy's Law: v = k f #3; grad h (2 Groundwater Flow Equation The continuity equation for stationary groundwater ow is given by: Z divf#26; #3

  12. Estimation of Relative Permeabilities in Three-Phase Flow in Porous Media

    E-Print Network [OSTI]

    of two nonlinear partial di eren- tial equations where the nonlinearities depend on the relative in a cylindricalcore sample subject to laboratory experi- ments. The three phases are the three uids, water, oil, 'l and Sl are the Darcy velocity and the saturation of phase l. Saturations satisfy Sw + So + Sg = 1

  13. Proceedings of Algoritmy 2000, pp. 1{10

    E-Print Network [OSTI]

    Tùma, Miroslav

    approaches for solving linear systems from a mixed- hybrid #12;nite element discretization of the Darcy's law and the continuity equation describing the potential uid ow in porous media. Spectral properties of resulting water ow modelling and hydraulics, oil reservoir engineering or modelling the environmental impacts

  14. A Multiple-Porosity Model for A Single-Phase Flow Through Naturally-Fractured Porous Media

    E-Print Network [OSTI]

    Douglas Jr., Jim

    compressible uid in a multiscale, naturally-fractured reservoir is presented. The problem can serve as a modelA Multiple-Porosity Model for A Single-Phase Flow Through Naturally-Fractured Porous Media Jim counterpart. Further, a model for the (N + 1)-scale problem in a fractured medium is derived. The well


    E-Print Network [OSTI]

    Gadgil, Ashok Jagannath


    an ement of fluid in a steady laminar flow, can be used tolaminar, the f1uid flows along streamli defined by *For steady flow~ fluid particles flowlaminar boundary layer thickness, L v'Re RECIRCULATING FLOW INDUCED IN A FLUID

  16. Enhanced Stability of Electrohydrodynamic Jets through Gas Ionization Sibel Korkut, Dudley A. Saville,* and Ilhan A. Aksay

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    Electrohydrodynamic (EHD) jets [1] emitted from liq- uid cones undergo various modes of instabilities [2,3] which cause them to break into droplets or whip before reaching the opposite electrode. The droplet formation is in close proximity of the nozzle. Although the stability of EHD jets has been the subject of various

  17. Simulating the Motion of Flexible Pulp Fibres Using the Immersed Boundary Method

    E-Print Network [OSTI]

    Stockie, John

    papermaking. Much of the theory centers around the motion of rigid cylindrical rods immersed in low Reynolds, immersed boundary method, uid-structure interaction 1 #12;Running head: Immersed boundary simulations. In this work, we concentrate on the application to pulp bres and demonstrate how the complex hydrodynamic

  18. Hydrogeology, chemical and microbial activity measurement through deep permafrost

    E-Print Network [OSTI]

    Stotler, R.L.


    L), re?ecting the Ca-salt drilling ?uid used at High Lake.values as the salt used to form the drilling brine (? ? 0.4‰salt used to mix the drill brine for clearing the hole prior to drilling,

  19. Biomedical Microdevices 3:3, 201209, 2001 # 2001 Kluwer Academic Publishers. Manufactured in The Netherlands.

    E-Print Network [OSTI]

    Bashir, Rashid

    of the live microorganism Listeria innocua injected into the chip demonstrate an easy method for detecting of small quantities of pathogenic bacteria or toxigenic substances in food, bodily ¯uids, tissue samples, soil, etc. In applications such as the screening of food products for the presence of pathogenic

  20. Enrichment strategies and convergence properties of the XFEM for hydraulic fracture problems

    E-Print Network [OSTI]

    Peirce, Anthony

    energy, is not suitable for modeling hydraulic fractures in which the uid and the fracture frontsEnrichment strategies and convergence properties of the XFEM for hydraulic fracture problems Finite Ele- ment Method (XFEM) for modeling hydraulic fractures (HF), two classes of boundary value

  1. Experimental constraints on the diagenetic self-sealing capacity of faults in high porosity rocks

    E-Print Network [OSTI]

    of £uids in the subsurface. Thus predicting their hydraulic behaviour has become a major pursuit in recent £ow; contami- nant transport; and geothermal energy produc- tion) as well as geological (e.g. crack that control the hydraulic properties of 0012-821X / 00 / $ ^ see front matter ß 2000 Elsevier Science B.V. All

  2. Characterization of the regulatory mechanism controlling phytotoxin production by Pseudomonas syringae pv. syringae 

    E-Print Network [OSTI]

    Wang, Nian


    and secretion of syringomycin and syringopeptin. Expression of the syrB1::uidA fusion was decreased 59% when 6-bp was deleted from the 5� end of the syr-syp box in the promoter region of operon IV. These results demonstrate that the conserved promoter...

  3. Core-annular flow through a horizontal pipe: Hydrodynamic counterbalancing of buoyancy force on core

    E-Print Network [OSTI]

    Vuik, Kees

    Core-annular flow through a horizontal pipe: Hydrodynamic counterbalancing of buoyancy force of a high-viscosity liquid core surrounded by a low-viscosity liquid annular layer through a horizontal pipe through a horizontal pipe. Since the densities of the two liq- uids are almost always different, gravity

  4. Long range forces between atomic impurities in liquid helium

    E-Print Network [OSTI]

    Long range forces between atomic impurities in liquid helium J. Dupont-Roc Laboratoire Kastler in a polarizable medium. We show that atomic impurities in liquid helium may indeed realize repulsive forces embedded in liquid helium, super uid or not. Solid helium have also been used. Successful theoretical

  5. Radiative Transfer in Interacting Media J.Kenneth Shultis

    E-Print Network [OSTI]

    Shultis, J. Kenneth

    can a ect the uid ow e.g., shock phenomena, energy loss from thermonuclear plasmas, combustion studies accelerated by neutron and high-energy photon transport methods for both military and civilian applications of nuclear energy. Today, radiative transport plays an important role in many other areas besides nuclear

  6. The Company: BIA Separations Experienced and Committed

    E-Print Network [OSTI]

    Lebendiker, Mario

    to design the ideal industrial purification process. Additionally, we use our expertise in liq- uid products of consistent and uniform quality in compliance with current Good Manufacturing Practice (c the 2004 Frost & Sullivan Technology Leadership Award for their innovative pDNA manufacturing process

  7. Low temperature London penetration depth and superfluid density in Fe-based superconductors

    SciTech Connect (OSTI)

    Kim, Hyunsoo [Ames Laboratory] [Ames Laboratory


    The superconducting gap symmetry of the Fe-based superconductors was studied by measurements and analysis of London penetration depth and super uid density. Tunnel diode resonator technique for these measurements was implemented in a dilution refrigerator allowing for the temperatures down to 50 mK. For the analysis of the super uid density, we used both experimental studies of Al-coated samples and original thermodynamic approach based on Rutgers relation. In three systems studied, we found that the superconducting gap at the optimal doping is best described in multi-gap full gap scenario. By performing experiments on samples with arti#12;cially introduced disorder with heavy ion irradiation, we show that evolution of the superconducting transition temperature and of the super uid density are consistent with full-gap sign changing s#6; superconducting state. The superconducting gap develops strong modulation both in the under-doped and the over-doped regimes. In the terminal hole-doped KFe{sub 2}As{sub 2}, both temperature dependence of the super uid density and its evolution with increase of the scattering rate are consistent with symmetry imposed vertical line nodes in the superconducting gap. By comparative studies of hole-doped (Ba,K)Fe{sub 2}As{sub 2} and electron-doped Ca10-3-8, we show that the superconducting gap modulation in the under-doped regime is intrinsic and is not induced by the coexisting static magnetic order.

  8. Testing Kentucky Coal to Set Design Criteria for a Lurgi Gasification Plant

    E-Print Network [OSTI]

    Roeger, A., III; Jones, J. E., Jr.


    's subcontractors, the Commonwealth of Kentucky or any agency thereof, or the United States Government or any agency thereof. INTRODUCTION Tri-State Synfuels Project Tri-State Synfuels Company, a partnershi of Texas Eastern Corporation and Texas Gas Transmis...Eion Corporat ion affiliates, proposes to produce li~Uid transportation fuels and substitute natural gas rom coal using the indirect liquefaction appr ach (Reference 1). The proj ect is sited in Hende son County, Kentucky and will, if built, use COIer...

  9. Exact Anisotropic Solutions of the Generalized TOV Equation

    E-Print Network [OSTI]

    Riazi, Nematollah; Sajadi, S Naseh; Assyaee, S Shahrokh


    We explore gravitating relativistic spheres composed of an anisotropic, barotropic uid. We assume a bi-polytropic equation of state which has a linear and a power-law terms. The generalized Tolman-Oppenheimer-Volkoff (TOV) equation which describes the hydrostatic equilibrium is obtained. The full system of equations are solved for solutions which are regular at the origin and asymptotically flat. Conditions for the appearance of horizon and a basic treatment of stability are also discussed.

  10. Fall and Winter Health Problems in Cow-Calf Herds

    E-Print Network [OSTI]

    Faries Jr., Floron C.


    disease that causes anemia, weakness, fever, lack of appetite, constipation, abortion and sometimes death ? Viral and bacterial pneumonia, diseases of the lungs ? Viral and bacterial abortions, infectious diseases that cause death of the embryo... toxic compound. The toxin produced from the tryptophan causes lung edema (an accumulation of fl uids) and emphysema. Cattle with mild conditions may go unnoticed and recover spontaneously within days. Cattle with severe lung edema and emphysema show...

  11. Effect of temperature on resonance of impellers 

    E-Print Network [OSTI]

    Dave, Ashok M


    Total dynamic force Stiffness Mass Phase angle Time Displacement Velocity Acceleration CHAPTER I. INTROOUCT ION Machinery vibration levels are directly related to its operating conditions. In 90'5 of operational failures, the machines.... The blade shapes are very complex and their characteristics differ from each other. Sources of Vibration There are several sources of vibrations in plants containing process-f1uid machinery. The machine vibrations are transmitted to connecting piping...


    E-Print Network [OSTI]

    University of Technology, Sydney UTS: Science UndeRgRadUatecoURSeSgUide2014 #12;contactUS Tel: 1300 ASK UTS (1300 275 887) Email: contentS Why Science at UTS? 01 World Class Facilities 02 Careers in Science and Mathematics 04 UTS: Science Courses 05 Bache


    SciTech Connect (OSTI)

    Hanks, D.


    Over 40 industrial facilities world-wide use standardized uranium hexafluoride (UF{sub 6}) cylinders for transport, storage and in-process receiving in support of uranium conversion, enrichment and fuel fabrication processes. UF{sub 6} is processed and stored in the cylinders, with over 50,000 tU of UF{sub 6} transported each year in these International Organization for Standardization (ISO) qualified containers. Although each cylinder is manufactured to an ISO standard that calls for a nameplate with the manufacturer's identification number (ID) and the owner's serial number engraved on it, these can be quite small and difficult to read. Recognizing that each facility seems to use a different ID, a cylinder can have several different numbers recorded on it by means of metal plates, sticky labels, paint or even marker pen as it travels among facilities around the world. The idea of monitoring movements of UF{sub 6} cylinders throughout the global uranium fuel cycle has become a significant issue among industrial and safeguarding stakeholders. Global monitoring would provide the locations, movements, and uses of cylinders in commercial nuclear transport around the world, improving the efficiency of industrial operations while increasing the assurance that growing nuclear commerce does not result in the loss or misuse of cylinders. It should be noted that a unique ID (UID) attached to a cylinder in a verifiable manner is necessary for safeguarding needs and ensuring positive ID, but not sufficient for an effective global monitoring system. Modern technologies for tracking and inventory control can pair the UID with sensors and secure data storage for content information and complete continuity of knowledge over the cylinder. This paper will describe how the next steps in development of an action plan for employing a global UF{sub 6} cylinder monitoring network could be cultivated using four primary UID functions - identification, tracking, controlling, and accounting.

  14. Modeling and Algorithmic Approaches to Constitutively-Complex, Microstructured Fluids

    SciTech Connect (OSTI)

    Miller, Gregory H.; Forest, Gregory


    We present a new multiscale model for complex uids based on three scales: microscopic, kinetic, and continuum. We choose the microscopic level as Kramers' bead-rod model for polymers, which we describe as a system of stochastic di#11;erential equations with an implicit constraint formulation. The associated Fokker-Planck equation is then derived, and adiabatic elimination removes the fast momentum coordinates. Approached in this way, the kinetic level reduces to a dispersive drift equation. The continuum level is modeled with a #12;nite volume Godunov-projection algorithm. We demonstrate computation of viscoelastic stress divergence using this multiscale approach.

  15. Utilization of Proven Technology to Meet Energy Conservation Goals 

    E-Print Network [OSTI]

    Kelly, P. H.; Stuchly, M. A.


    treatment nebds of approximately 14,000 barrels per day of produced 'Vell fluids. Savings of 100 MCF/D were realized. In 1979 at the 65 MMCF/D cryogenic plant at Sand Hills in West Texas, reciprocating waste heat units w~re installed on three 2700... to meet the water content specifications of the gas sales contract, but also to allow processing for liqUids at very low temperatures without freezing. Although these systems do not have a hearty energy appetite, energy can be conserved through...

  16. A comparison of two lung clearance models based on the dissolution rates of oxidized depleted uranium

    E-Print Network [OSTI]

    Crist, Kevin Craig


    0!. fining i. rection U!Id! '"sol v ' Lrgu!! 1. lou (9) Peneiratoc Oxide'Lioc! Conditions Components of he Simulated LU!!g SnluLlon, IV Cele!I!a ted 0'1ssolutlon Rate for Farh 20ml Sample 005 Calculai. ed Dissolution Bate for Each 20 !Ill Sa... bsomathematicai lung r. learance model was introduced at the Snowbird Actinide Workshop. The model is designed to (2) uti li2e derived dissolution rates for specific compounds. These absorption rate functions are coupled with mechanical clearance rate...

  17. Evaluation of synthetic aggregates for use in concrete 

    E-Print Network [OSTI]

    Ahmad, Hafizuddin


    ), ab"orption- saturation charactcri. , tice, uid dry loose unit weight we ?' made. To study thc mechanical durability of the aggregaIes Lo. Angeles and Texas sandblast abrasion tests were made. Potential reactivity, pressure slaking, and sodium... advantage over. the pressure slaking I. est. 4. Both potential. reactivity test (PSTM C289) and Na011 test exhibited simi1ar r;lationships betmeen firing temperature and re- duction in alitalinity. 5, Los Angeles Lest method (PSTM C13f) did not produce...

  18. The effects of plate thickness and perforation diameter on the supporting vapor velocity for a perforated plate fractionating column 

    E-Print Network [OSTI]

    Cottle, John Ernest


    &opere poser t-t vari, bio "ransformr. i oo t'. t t!ie ! o-t oii-'? it to ! h liquiu could bo adeustod. "'nis rran, cmont per&aitted t. '. o, . inc. &&ance of t. '. e li&;uid temp rature t iCG P plus or minus 0, 1 P. all liquid aial air temperatures of tlic... without bio"!in, the liquid out of the ma&master and the connections available leaked. Since the plate pressure drop was unimportant ~?ay~, tne manometer was ab ndoned after the first fow r&&ns were mode. In a commercial oolumn r&here liquid...

  19. A study of Macrophomina phaseolina, soybean, and water stress

    E-Print Network [OSTI]

    Shokes, Frederick Milton


    uid Water Movement in Plants. Xylem resistance to water flow is generally low, but may increase due to cavitation under conditions of severe stress (41). The major resistance to liquid water flow in the plant is believed to be that of the root (6...A STUDY OF MACROPHOMINA PHASEOLINA, SOYBEAN, AND WATER STRESS A Thesis by FREDERICK MILTON SHOKES Submitted to the Graduate College of Texas A8cM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE...

  20. Mineralogy and diagenesis of Gulf Coast Tertiary shales Ann-Mag Field, Brooks County, Texas

    E-Print Network [OSTI]

    Bott, Winston Frederick


    cations, the released fluid migrates vertically upward along a decrease in fl ui d pressure gradient. The fl uid flow provides a mechanism for the redistribution of subsurface fluid components including liquid petroleum and natural gas. Alteration of... CONCLUSIONS REFERENCES Page I 1 2 3 3 6 7 9 11 12 17 1B 20 20 20 20 24 27 29 29 29 31 31 35 35 39 39 54 57 5 69 72 78 83 83 91 92 95 104 106 APPENDIX I APPENDIX II VITA TABLE OF CONTENTS (Cont'd. ) Page 115 132...

  1. ~AE TECHNICAL ';,: . , ~PAPER SERIES 982500

    E-Print Network [OSTI]

    \\'ehicles are currently being d~veloped whicl1 use ABSTRACT hydrogen. me1l1anolor gasolin~. Synthetic middle d~v~lup~d .1 v~hidl: ~imulalion mud~l. .compres~ed lIydrugen induding d~l~lilt:d modt:l~ ufJll:mi.lliv\\.'l'ul:ll:1:11 mclIt;tl1ol. or synthetic li4Uids frum nalur,1l gas. "ln~ vl:hil."ll: dl:~ign~. "lnc dl

  2. Effects of current direction on the dilution of dense jets emittted from a multiport diffuser

    E-Print Network [OSTI]

    Smith, Robert Lawrence


    of the brine plume. 4 Regions of a dense jet. 5 Schematic of diffuser model and basin. 25 31 6 Schematic of diffuser model with brine delivery system. 32 7 Hydrolab TC ? 2 conductivity and temperature system. 34 8 TC-2 probe mounted on towing carriage...-cm) intervals. The diffuser was secured beneath the false Circulation Return Loop (IG in O, D. ) Guide Vance Carriage ~ jets bservation Area 5ft O. 6 o. Sump l50ft 3Lgft C I g lass flow meter IOf t I I I ljet uid I I 'in ut pump...

  3. Binary vapor-liquid equilibrium data without measurement of composition

    E-Print Network [OSTI]

    Nehzat, Mohammad Sadegh


    Phases at 220. 0 F Pressure sia Li uid Va or Nole Fraction of n-Butane K-Value n-Butane 800. 0 700. 0 0. 720 0. 768 0. 440 0. 470 0. 610 0. 612 500. 0 0. 862 0. 580 0. 672 450. 0 0. 886 0. 625 0. 706 37 1able II. Calculated Properties... p Number of phases n Number of moles Density Vapor volume fraction Subscripts Peed property 47 J Denotes a particular Burnett expansion Saturated liquid property Saturated vapor property 1 Component number 1 (n-butane) 2 Component number 2...

  4. Inverse problem in anisotropic poroelasticity: Drained constants from undrained ultrasound measurements

    SciTech Connect (OSTI)

    Berryman, J.G.; Nakagawa, S.


    Poroelastic analysis has traditionally focused on the relationship between dry or drained constants which are assumed known and the saturated or undrained constants which are assumed unknown. However, there are many applications in this field of study for which the main measurements can only be made on the saturated/undrained system, and then it is uncertain what the eects of the uids were on the system, since the drained constants remain a mystery. The work presented here shows how to deduce drained constants from undrained constants for anisotropic systems having symmetries ranging from isotropic to orthotropic. Laboratory ultrasound data are then inverted for the drained constants in three granular packings: one of glass beads, and two others for distinct types of more or less angular sand grain packings. Experiments were performed under uniaxial stress, which resulted in hexagonal (transversely isotropic) symmetry of the poroelastic response. One important conclusion from the general analysis is that the drained constants are uniquely related to the undrained constants, assuming that porosity, grain bulk modulus, and pore uid bulk modulus are already known. Since the resulting system of equations for all the drained constants is linear, measurement error in undrained constants also propagates linearly into the computed drained constants.

  5. The relationship between incomes and age of heads of households viewed locally as being in poverty in a twelve-county area of Texas

    E-Print Network [OSTI]

    Martin, Marsha Pyle


    !. t t'!aL p?op e !iu!en;lured foc any lenr ti! of t Lee terd to sir!k;;; nnstby. Tnei: v; . k his+cry rsay have 'nec. . n one of failure, s . d, if' they a e very young! allv asrirat. 'ons they possess . : o- higr!er a hi, vcr"errt so . n s.... Uuiver-i. y iu Pertie~ zwfll. ~rent o: the rendu resent or the dept e oP '%ST"R OF SCI ~ . CZ Augu;. t 1" ', 0 v~oor Sup Je t'. Sooio" o@ TIIE REr j(TTOI'IHHTP HETijEEII TIICOIm, H jUID AOE OF PKKH OP HOUHEHOLDS j ml 'J3 LGCjd LY A BETI;C. Tij POX...

  6. Simulation information regarding Sandia National Laboratories%3CU%2B2019%3E trinity capability improvement metric.

    SciTech Connect (OSTI)

    Agelastos, Anthony Michael; Lin, Paul T.


    Sandia National Laboratories, Los Alamos National Laboratory, and Lawrence Livermore National Laboratory each selected a representative simulation code to be used as a performance benchmark for the Trinity Capability Improvement Metric. Sandia selected SIERRA Low Mach Module: Nalu, which is a uid dynamics code that solves many variable-density, acoustically incompressible problems of interest spanning from laminar to turbulent ow regimes, since it is fairly representative of implicit codes that have been developed under ASC. The simulations for this metric were performed on the Cielo Cray XE6 platform during dedicated application time and the chosen case utilized 131,072 Cielo cores to perform a canonical turbulent open jet simulation within an approximately 9-billion-elementunstructured- hexahedral computational mesh. This report will document some of the results from these simulations as well as provide instructions to perform these simulations for comparison.

  7. Fast Computation of Solvation Free Energies with Molecular Density Functional Theory: Thermodynamic-Ensemble Partial Molar Volume Corrections

    E-Print Network [OSTI]

    Volodymyr P. Sergiievskyi; Guillaume Jeanmairet; Maximilien Levesque; Daniel Borgis


    Molecular Density Functional Theory (MDFT) offers an efficient implicit- solvent method to estimate molecule solvation free-energies whereas conserving a fully molecular representation of the solvent. Even within a second order ap- proximation for the free-energy functional, the so-called homogeneous reference uid approximation, we show that the hydration free-energies computed for a dataset of 500 organic compounds are of similar quality as those obtained from molecular dynamics free-energy perturbation simulations, with a computer cost reduced by two to three orders of magnitude. This requires to introduce the proper partial volume correction to transform the results from the grand canoni- cal to the isobaric-isotherm ensemble that is pertinent to experiments. We show that this correction can be extended to 3D-RISM calculations, giving a sound theoretical justifcation to empirical partial molar volume corrections that have been proposed recently.

  8. Review of Enabling Technologies to Facilitate Secure Compute Customization

    SciTech Connect (OSTI)

    Aderholdt, Ferrol [Tennessee Technological University; Caldwell, Blake A [ORNL; Hicks, Susan Elaine [ORNL; Koch, Scott M [ORNL; Naughton, III, Thomas J [ORNL; Pelfrey, Daniel S [ORNL; Pogge, James R [Tennessee Technological University; Scott, Stephen L [Tennessee Technological University; Shipman, Galen M [ORNL; Sorrillo, Lawrence [ORNL


    High performance computing environments are often used for a wide variety of workloads ranging from simulation, data transformation and analysis, and complex workflows to name just a few. These systems may process data for a variety of users, often requiring strong separation between job allocations. There are many challenges to establishing these secure enclaves within the shared infrastructure of high-performance computing (HPC) environments. The isolation mechanisms in the system software are the basic building blocks for enabling secure compute enclaves. There are a variety of approaches and the focus of this report is to review the different virtualization technologies that facilitate the creation of secure compute enclaves. The report reviews current operating system (OS) protection mechanisms and modern virtualization technologies to better understand the performance/isolation properties. We also examine the feasibility of running ``virtualized'' computing resources as non-privileged users, and providing controlled administrative permissions for standard users running within a virtualized context. Our examination includes technologies such as Linux containers (LXC [32], Docker [15]) and full virtualization (KVM [26], Xen [5]). We categorize these different approaches to virtualization into two broad groups: OS-level virtualization and system-level virtualization. The OS-level virtualization uses containers to allow a single OS kernel to be partitioned to create Virtual Environments (VE), e.g., LXC. The resources within the host's kernel are only virtualized in the sense of separate namespaces. In contrast, system-level virtualization uses hypervisors to manage multiple OS kernels and virtualize the physical resources (hardware) to create Virtual Machines (VM), e.g., Xen, KVM. This terminology of VE and VM, detailed in Section 2, is used throughout the report to distinguish between the two different approaches to providing virtualized execution environments. As part of our technology review we analyzed several current virtualization solutions to assess their vulnerabilities. This included a review of common vulnerabilities and exposures (CVEs) for Xen, KVM, LXC and Docker to gauge their susceptibility to different attacks. The complete details are provided in Section 5 on page 33. Based on this review we concluded that system-level virtualization solutions have many more vulnerabilities than OS level virtualization solutions. As such, security mechanisms like sVirt (Section 3.3) should be considered when using system-level virtualization solutions in order to protect the host against exploits. The majority of vulnerabilities related to KVM, LXC, and Docker are in specific regions of the system. Therefore, future "zero day attacks" are likely to be in the same regions, which suggests that protecting these areas can simplify the protection of the host and maintain the isolation between users. The evaluations of virtualization technologies done thus far are discussed in Section 4. This includes experiments with 'user' namespaces in VEs, which provides the ability to isolate user privileges and allow a user to run with different UIDs within the container while mapping them to non-privileged UIDs in the host. We have identified Linux namespaces as a promising mechanism to isolate shared resources, while maintaining good performance. In Section 4.1 we describe our tests with LXC as a non-root user and leveraging namespaces to control UID/GID mappings and support controlled sharing of parallel file-systems. We highlight several of these namespace capabilities in Section 6.2.3. The other evaluations that were performed during this initial phase of work provide baseline performance data for comparing VEs and VMs to purely native execution. In Section 4.2 we performed tests using the High-Performance Computing Conjugate Gradient (HPCCG) benchmark to establish baseline performance for a scientific application when run on the Native (host) machine in contrast with execution under Docker and KVM. Our tests verified prior studie

  9. Magnetic Reconnection

    SciTech Connect (OSTI)

    Masaaki Yamada, Russell Kulsrud and Hantao Ji


    We review the fundamental physics of magnetic reconnection in laboratory and space plasmas, by discussing results from theory, numerical simulations, observations from space satellites, and the recent results from laboratory plasma experiments. After a brief review of the well-known early work, we discuss representative recent experimental and theoretical work and attempt to interpret the essence of significant modern findings. In the area of local reconnection physics, many significant findings have been made with regard to two- uid physics and are related to the cause of fast reconnection. Profiles of the neutral sheet, Hall currents, and the effects of guide field, collisions, and micro-turbulence are discussed to understand the fundamental processes in a local reconnection layer both in space and laboratory plasmas. While the understanding of the global reconnection dynamics is less developed, notable findings have been made on this issue through detailed documentation of magnetic self-organization phenomena in fusion plasmas. Application of magnetic reconnection physics to astrophysical plasmas is also brie y discussed.

  10. Predicting human blood viscosity in silico

    SciTech Connect (OSTI)

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


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

  11. Next Generation Safeguards Initiative: Overview and Policy Context of UF6 Cylinder Tracking Program

    SciTech Connect (OSTI)

    Boyer, Brian D [Los Alamos National Laboratory; Whitaker, J. Michael [ORNL; White-Horton, Jessica L. [ORNL; Durbin, Karyn R. [NNSA


    Thousands of cylinders containing uranium hexafluoride (UF{sub 6}) move around the world from conversion plants to enrichment plants to fuel fabrication plants, and their contents could be very useful to a country intent on diverting uranium for clandestine use. Each of these large cylinders can contain close to a significant quantity of natural uranium (48Y cylinder) or low-enriched uranium (LEU) (30B cylinder) defined as 75 kg {sup 235}U which can be further clandestinely enriched to produce 1.5 to 2 significant quantities of high enriched uranium (HEU) within weeks or months depending on the scale of the clandestine facility. The National Nuclear Security Administration (NNSA) Next Generation Safeguards Initiative (NGSI) kicked off a 5-year plan in April 2011 to investigate the concept of a unique identification system for UF{sub 6} cylinders and potentially to develop a cylinder tracking system that could be used by facility operators and the International Atomic Energy Agency (IAEA). The goal is to design an integrated solution beneficial to both industry and inspectorates that would improve cylinder operations at the facilities and provide enhanced capabilities to deter and detect both diversion of low-enriched uranium and undeclared enriched uranium production. The 5-year plan consists of six separate incremental tasks: (1) define the problem and establish the requirements for a unique identification (UID) and monitoring system; (2) develop a concept of operations for the identification and monitoring system; (3) determine cylinder monitoring devices and technology; (4) develop a registry database to support proof-of-concept demonstration; (5) integrate that system for the demonstration; and (6) demonstrate proof-of-concept. Throughout NNSA's performance of the tasks outlined in this program, the multi-laboratory team emphasizes that extensive engagement with industry stakeholders, regulatory authorities and inspectorates is essential to its success.

  12. Foam Micromechanics

    SciTech Connect (OSTI)

    Kraynik, A.M.; Neilsen, M.K.; Reinelt, D.A.; Warren, W.E.


    Foam evokes many different images: waves breaking at the seashore, the head on a pint of Guinness, an elegant dessert, shaving, the comfortable cushion on which you may be seated... From the mundane to the high tech, foams, emulsions, and cellular solids encompass a broad range of materials and applications. Soap suds, mayonnaise, and foamed polymers provide practical motivation and only hint at the variety of materials at issue. Typical of mukiphase materiaIs, the rheoIogy or mechanical behavior of foams is more complicated than that of the constituent phases alone, which may be gas, liquid, or solid. For example, a soap froth exhibits a static shear modulus-a hallmark of an elastic solid-even though it is composed primarily of two Newtonian fluids (water and air), which have no shear modulus. This apparent paradox is easily resolved. Soap froth contains a small amount of surfactant that stabilizes the delicate network of thin liq- uid films against rupture. The soap-film network deforms in response to a macroscopic strain; this increases interracial area and the corresponding sur- face energy, and provides the strain energy of classical elasticity theory [1]. This physical mechanism is easily imagined but very challenging to quantify for a realistic three-dimensional soap froth in view of its complex geome- try. Foam micromechanics addresses the connection between constituent properties, cell-level structure, and macroscopic mechanical behavior. This article is a survey of micromechanics applied to gas-liquid foams, liquid-liquid emulsions, and cellular solids. We will focus on static response where the foam deformation is very slow and rate-dependent phenomena such as viscous flow can be neglected. This includes nonlinear elasticity when deformations are large but reversible. We will also discuss elastic- plastic behavior, which involves yield phenomena. Foam structures based on polyhedra packed to fill space provide a unify- ing geometrical theme. Because a two-dimensional situation is always easier to visualize and usually easier to analyze, the roots of foam micromechanics lie in the plane packed with polygons. There are striking similarities as well as obvious differences between 2D and 3D.

  13. Simulation model finned water-air-coil withoutcondensation

    SciTech Connect (OSTI)

    Wetter, Michael


    A simple simulation model of a finned water-to- air coil without condensation is presented. The model belongs to a collection of simulation models that allows eficient computer simulation of heating, ventilation, and air-conditioning (HVAC) systems. The main emphasis of the models is short computation time and use of input data that are known in the design process of an HVAC system. The target of the models is to describe the behavior of HVAC components in the part load operation mode, which is becoming increasingly important for energy efficient HVAC systems. The models are intended to be used for yearly energy calculation or load calculation with time steps of about 10 minutes or larger. Short-time dynamic effects, which are of interest for different aspects of control performance, are neglected. The part load behavior of the coil is expressed in terms of the nominal condition and the dimensionless variation of the heat transfer with change of mass flow and temperature on the water side and the air side. The effectiveness- NTU relations are used to parametrize the convective heat transfer at nominal conditions and to compute the part load conditions. Geometrical data for the coil are not required, The calculation of the convective heat transfer coefficients at nominal conditions is based on the ratio of the air side heat transfer coefficients multiplied by the fin eficiency and divided by the water side heat transfer coefficient. In this approach, the only geometrical information required are the cross section areas, which are needed to calculate the~uid velocities. The formulas for estimating this ratio are presented. For simplicity the model ignores condensation. The model is static and uses only explicit equations. The explicit formulation ensures short computation time and numerical stability. This allows using the model with sophisticated engineering methods such as automatic system optimization. The paper fully outlines the algorithm description and its simplifications. It is not tailored for a particular simulation program to ensure easy implementation in any simulation program.

  14. Past, Present, and Future Production of Bio-oil

    SciTech Connect (OSTI)

    Steele, Philip; Yu, Fei; Gajjela, Sanjeev


    Bio-oil is a liquid product produced by fast pyrol-ysis of biomass. The fast pyrolysis is performed by heating the biomass rapidly (2 sec) at temperatures ranging from 350 to 650 oC. The vapors produced by this rapid heating are then condensed to produce a dark brown water-based emulsion composed of frag-ments of the original hemicellulose, cellulose and lignin molecules contained in the biomass. Yields range from 60 to 75% based on the feedstock type and the pyrolysis reactor employed. The bio-oil pro-duced by this process has a number of negative prop-erties that are produced mainly by the high oxygen content (40 to 50%) contributed by that contained in water (25 to 30% of total mass) and oxygenated compounds. Each bio-oil contains hundreds of chemi-cal compounds. The chemical composition of bio-oil renders it a very recalcitrant chemical compound. To date, the difficulties in utilizing bio-oil have limited its commercial development to the production of liq-uid smoke as food flavoring. Practitioners have at-tempted to utilize raw bio-oil as a fuel; they have also applied many techniques to upgrade bio-oil to a fuel. Attempts to utilize raw bio-oil as a combustion engine fuel have resulted in engine or turbine dam-age; however, Stirling engines have been shown to successfully combust raw bio-oil without damage. Utilization of raw bio-oil as a boiler fuel has met with more success and an ASTM standard has recently been released describing bio-oil characteristics in relation to assigned fuel grades. However, commercialization has been slow to follow and no reports of distribution of these bio-oil boiler fuels have been reported. Co-feeding raw bio-oil with coal has been successfully performed but no current power generation facilities are following this practice. Upgrading of bio-oils to hydrocarbons via hydroprocessing is being performed by several organizations. Currently, limited catalyst life is the obstacle to commercialization of this tech-nology. Researchers have developed means to increase the anhydrosugars content of bio-oil above the usual 3% produced during normal pyrolysis by mild acid pretreatment of the biomass feedstock. Mississippi State University has developed a proprietary method to produce an aqueous fraction containing more than 50% of anhydrosugars content. These anhydrosugars can be catalyzed to hydrogen or hydrocarbons; alter-nately, the aqueous fraction can be hydrolyzed to pro-duce a high-glucose content. The hydrolyzed product can then be filtered to remove microbial inhibitor compounds followed by production of alcohols by fer-mentation. Production of bio-oil is now considered a major candidate as a technology promising production of drop-in transportation and boiler fuels.