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Sample records for yvonne taylor brian

  1. Yvonne Hines

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

    Yvonne Hines Engineering Services The Network OSCARS Fasterdata IPv6 Network Network Performance Tools The ESnet Engineering Team Contact Us Technical Assistance: 1 800-33-ESnet...

  2. Yvonne Hines

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

    Yvonne Hines About ESnet Our Mission The Network ESnet History Governance & Policies Career Opportunities ESnet Staff & Org Chart ESnet Leadership Administration Advanced Network Technologies Cybersecurity Infrastructure, Identity & Collaboration Network Engineering Dale Carder Paul Wefel Network Planning Operational Enhancements Office of the CTO Science Engagement Tools Team Contact Us Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1

  3. Video:Brian Taylor

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

  4. Brian Friesen

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

    Brian Friesen Brian Friesen friesen Brian Friesen , Ph.D. Postdoctoral Fellow BFriesen@lbl.gov Phone: 510-486-5654 Fax: (510) 486-4316 1 Cyclotron Road Mail Stop 943-256 Berkeley,...

  5. Brian Wirth

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

    Brian Wirth Brian Wirth 1.1. Project Information - Modeling plasma - surface interactions Document Prepared By Brian Wirth Project Title Modeling plasma - surface interactions Principal Investigator Brian Wirth Participating Organizations University of California, Berkeley; University of Tennessee; Oak Ridge National Laboratory Funding Agencies DOE SC DOE NSA NSF NOAA NIH Other: 2. Project Summary & Scientific Objectives for the Next 5 Years Please give a brief description of your project -

  6. Brian Yumae

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

    Brian Yumae Brian Yumae Brian S. Yumae Sr Computer Systems Engineer Infrastructure Services National Energy Research Scientific Computing Center bsyumae@lbl.gov Phone: (925) 963-4766 Fax: (510) 486-6459 Lawrence Berkeley National Laboratory 1 Cyclotron Road Mailstop 59R4010A Berkeley, CA 94720 US Last edited: 2016-04-29 11:35

  7. Brian Naughton

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

    Brian Grabowski About Us Brian Grabowski - Argonne National Laboratory Brian Grabowski is public information officer who covers computing, the environment and life sciences for Argonne National Laboratory, one of the Department of Energy's 17 National Laboratories. Most Recent PHOTOS: 10 Years, 10 Breakthroughs at Argonne's Fastest Supercomputer February 24

    Naughton - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure &

  8. Brian Hitson

    Broader source: Energy.gov [DOE]

    Brian A. Hitson is the Associate Director of Administration and Information Services at the Office of Scientific and Technical Information (OSTI).

  9. Brian Friesen

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

    Brian Friesen Brian Friesen bfriesen Brian Friesen , Ph.D. HPC Consultant BFriesen@lbl.gov Phone: (510) 486-5654 Fax: (510) 486-6459 1 Cyclotron Road Mail Stop 59R4010A Berkeley, CA 94720 Biographical Sketch Brian received his Ph.D. in physics from the University of Oklahoma in 2015, supervised by Prof. Edward Baron. His research focused on radiative transfer calculations in supernovae. His CV is here. Journal Articles Friesen, B., Almgren, A., Lukić, Z., Weber, G., Morozov, D., Day, M.,

  10. Brian Tierney

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

    Brian Tierney About ESnet Our Mission The Network ESnet History Governance & Policies Career Opportunities ESnet Staff & Org Chart ESnet Leadership Administration Advanced Network Technologies Cybersecurity Infrastructure, Identity & Collaboration Network Engineering Network Planning Operational Enhancements Office of the CTO Science Engagement Tools Team Contact Us Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1 510-486-7600 (Globally) 1

  11. Brian Rebel

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

    Digging for Gold: Long Baseline Neutrino Experiment in the 1 Brian Rebel February 8, 2012 Tuesday, February 14, 2012 2 LBNE Nuggets * LBNE is the next generation of neutrino experiment after NOνA * The processes LBNE will look for are all really rare, like gold nuggets * Need to have a grand scale to even begin: massive detectors, long distances for the neutrinos to travel, intense beams * The knowledge gained will be revolutionary - maybe even answer the question as to why we are here Tuesday,

  12. Brian Deese | Department of Energy

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

    Brian Deese About Us Brian Deese - Deputy Director of the National Economic Council Most Recent Building Momentum June 28

  13. Brian Larsen 2012 Poster

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

    elimination of carbon supports, and increased catalyst durability High aspect ratio nano-structured Pt-based PEM fuel cell catalysts Brian A. Larsen, KC Neyerlin, Svitlana ...

  14. Brian Grabowski | Argonne National Laboratory

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

    Brian Grabowski Brian Grabowski is a public information officer who covers computing, the environment and life sciences. Contact him at (630) 252-1232

  15. G. Brian Estes

    Broader source: Energy.gov [DOE]

    G. Brian Estes has served on seven committees of the National Research Council, six of which dealt with DOE. He is a member of the Board on Infrastructure and the Constructed Environment of the...

  16. Brian Grabowski | Department of Energy

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

    Brian Grabowski About Us Brian Grabowski - Argonne National Laboratory Brian Grabowski is public information officer who covers computing, the environment and life sciences for Argonne National Laboratory, one of the Department of Energy's 17 National Laboratories. Most Recent PHOTOS: 10 Years, 10 Breakthroughs at Argonne's Fastest Supercomputer February 24

  17. Brian Friesen - vita

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

    Brian Friesen Lawrence Berkeley National Laboratory 1 Cyclotron Road Mailstop 59R4010A Berkeley, CA, 94720 USA Phone: (510) 486-7612 (NERSC) Phone: (510) 486-5782 (CCSE) Fax: (510) 486-6459 Email: bfriesen@lbl.gov Position 2016-present NERSC Application Performance Consultant, Lawrence Berkeley National Labora- tory 2015-2016 NERSC NESAP Postdoctoral Fellow, Lawrence Berkeley National Laboratory 2010-2015 Graduate Research Assistant, University of Oklahoma 2009-2010 Graduate Teaching Assistant,

  18. Taylor Barnes

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

    Taylor Barnes Taylor Barnes Taylor Barnes Rear Admiral Grace Murray Hopper Postdoctoral Fellow tbarnes@lbl.gov 1 Cyclotron Road Mail Stop 943-256 Berkeley, CA 94720 Last edited:...

  19. NREL: Energy Analysis - Brian W Bush

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

    Brian W Bush Photo of Brian Bush Brian W Bush is a member of the Energy Forecasting and Modeling Group in the Strategic Energy Analysis Center. Principal Strategic Analyst On staff from January 2008 Phone number: (303) 384-7472 E-mail: brian.bush@nrel.gov Areas of expertise Energy and infrastructure modeling, simulation, and analysis High performance computing Software architecture, design, implementation, and testing Discrete-event and continuous simulation Statistical analysis Geographic

  20. Brian Toonen | Argonne Leadership Computing Facility

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

    Brian Toonen Consultant/Software Engineer Argonne National Laboratory 9700 South Cass Avenue Building 240 - Rm. 3123 Argonne, IL 60439 630-252-6722 toonen

  1. Postdoctoral Research Awards Annual Research Meeting: Brian Larsen...

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

    Brian Larsen Postdoctoral Research Awards Annual Research Meeting: Brian Larsen Poster Presentation at 2012 EERE Annual Research Meeting, Postdoctoral Research Awards, from the ...

  2. QER- Comment of Brian West

    Broader source: Energy.gov [DOE]

    Hello, Thanks for the invitation to the QER workshop. Here are a couple of comments that I was probably unable to fully articulate in the main session, although I did try to make some of these points in the breakout session: When considering alternatives and policy that drives alternative fuel use, it is important to learn from Policy successes and failures. Policy drivers put in place in Thailand, Brazil, and Sweden have been successful in transitions to greater alternative fuel use. US policy for Flex Fuel Vehicles has been largely unsuccessful at encouraging alternative fuel use. The fuel economy credit for the OEMs to build FFVs was generous but encouraged only modest production; nonetheless there are over 15M FFVs on the road. However, they use very little ethanol fuel due to cost ($/mile), range, etc. Natural Gas has a very real value proposition (lower $/gge) so fleet owners have good financial incentive to make the switch, even if investments are required. One participant commented that infrastructure costs are small compared to costs of imported oil. I agree with this statement. One presenter mentioned (a city?) with a law that requires infrastructure to support future EV charging be installed in any new parking garage. Great idea. (Better to have and not need than need and not have, especially when cost differential is small on the front end and very large on the back end). In the US we install about 20,000-40,000 new fuel dispensers per year (according to Gilbarco/Wayne). It would be a horrible missed opportunity to not put policy in place that encourages/requires E25 or E85-compatible dispensers. With a successful policy driver, in the next five years the nation could have over 100,000 ethanol-compatible dispensers in place, ready for a new High Octane Fuel (that could very likely contain more than 10 or 15% ethanol). Thanks Brian H. West Fuels, Engines, and Emissions Research Center Oak Ridge National Laboratory http://www.ornl.gov/ http

  3. Brian Reeves | Inventors | GE Global Research

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

    Brian Reeves Brian Reeves Artificial Lift Research Engineer GRC OGTC PS-Artificial Lift Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) "Collaboration brings forth innovation, so we must work together openly with our customers and colleagues if we want to be truly successful." -Brian Reeves As a senior

  4. Larry Taylor | Bioenergy | NREL

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

    Larry Taylor Research Scientist Larry.Taylor@nrel.gov | 303-384-7784 Research Interests Larry Taylor received his Ph.D. in Environmental Molecular Biology and Biotechnology from ...

  5. NREL Scientist Brian Gregg Named AAAS Fellow - News Releases | NREL

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

    Scientist Brian Gregg Named AAAS Fellow Gregg honored for distinguished contributions to the field of organic solar photoconversion January 19, 2015 photo of Brian Gregg Photo of Brian Gregg, NREL Scientist Brian Gregg, a scientist at the Energy Department's National Renewable Energy Laboratory (NREL), has been named a fellow of the American Association for the Advancement of Science (AAAS). AAAS cited Gregg for "distinguished contributions to the field of solar photoconversion,

  6. Yvonne Hines

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

    Opportunities ESnet Staff & Org Chart Administration Advanced Network Technologies Cybersecurity Infrastructure, Identity & Collaboration Network Engineering Office of the CTO...

  7. Susan L. Taylor

    Office of Energy Efficiency and Renewable Energy (EERE)

    Susan L. Taylor is the founder and CEO of the National CARES Mentoring Movement.  After 27 years at the helm of Essence magazine, Taylor left publishing to devote her life to building the...

  8. NERSC's Brian Friesen Helps Cray Surprise an Inquisitive High School

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

    Student NERSC's Brian Friesen Helps Cray Surprise an Inquisitive High School Student NERSC's Brian Friesen Helps Cray Surprise an Inquisitive High School Student May 23, 2016 friesenschoolsurprise Brian Friesen (second from left), Christy Adkinson (middle) and Hugo Villanueva (second from right) with school officials at the John F. Kennedy Middle College High School. Image: Cray About a month ago, Hugo Villanueva of John F. Kennedy Middle College High School in Southern California was trying

  9. Brian K. Kobilka and G-protein-coupled Receptors (GPCR)

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

    Brian K. Kobilka and G-protein-coupled Receptors (GPCR) Resources with Additional Information Brian K. Kobilka Credit: Linda A. Cicero Stanford News Service 'Thanks in part to research performed at the U.S. Department of Energy's (DOE) Argonne National Laboratory, the 2012 Nobel Prize in Chemistry was awarded today to Americans Brian Kobilka and Robert Lefkowitz for their work on G-protein-coupled receptors. G-protein-coupled receptors, or GPCRs, are a large family of proteins embedded in a

  10. Meet CMI Researcher Brian Sales | Critical Materials Institute

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

    Brian Sales CMI focus area deputy leader Brian Sales CMI researcher Brian Sales is the Deputy Lead for Focus Area 2, Developing Substitutes. In this role, he assists Adam Schwartz in overseeing projects that reduce the usage of critical rare earth elements by developing substitute materials with equivalent or superior properties. Dr. Sales' research has focused on the discovery, synthesis, and development of new materials with potential to impact advanced energy technologies. He has made

  11. Brian K. Kobilka and G-protein-coupled Receptors (GPCR)

    Office of Scientific and Technical Information (OSTI)

    ... Additional information about Brian Kobilka and G-protein-coupled receptors (GPCR) is via publications and on the Web. Publication Information: Ligand-specific Regulation of the ...

  12. Dr. Brian Kalk - Chairman North Dakota Public Service Commission...

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

    Brian Kalk - Chairman North Dakota Public Service Commission. Responding to Changing Infrastructure Needs. I. Overview of the jurisdiction of the North Dakota Public Service ...

  13. Sonia Taylor | Department of Energy

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

    Sonia Taylor About Us Sonia Taylor - Loan Programs Office Most Recent More Than 350 Now at Work Building CA Valley Solar Plant February 27

  14. Postdoctoral Research Awards Annual Research Meeting: Brian Larsen |

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

    Department of Energy Brian Larsen Postdoctoral Research Awards Annual Research Meeting: Brian Larsen Poster Presentation at 2012 EERE Annual Research Meeting, Postdoctoral Research Awards, from the U.S. Department of Energy. larsenb_2012poster.pdf (1.16 MB) More Documents & Publications EERE Postdoctoral Research Awards Annual Meeting Posters Fuel Cells for Transportation - FY 2001 Progress Report Rotating Disk-Electrode Aqueous Electrolyte Accelerated Stress Tests for PGM

  15. BrianHitson_1.mp4 | OSTI, US Dept of Energy Office of Scientific...

    Office of Scientific and Technical Information (OSTI)

    BrianHitson1.mp4 Berlin, Germany, January 29, 2013 Improving Access to U.S Department of Energy R&D Results: AgencyPublisher Collaboration APE Conference 2013 Brian A. Hitson, ...

  16. VEE-0013- In the Matter of O'Brian Oil Company

    Broader source: Energy.gov [DOE]

    On July 18, 1994 and November 22, 1995, O'Brian Oil Company (O'Brian) of Shellsburg, Iowa, filed Applications for Exception with the Office of Hearings and Appeals of the Department of Energy. In...

  17. LEE-0138- In the Matter of O'Brian Oil Company

    Broader source: Energy.gov [DOE]

    On July 18, 1994 and November 22, 1995, O'Brian Oil Company (O'Brian) of Shellsburg, Iowa, filed Applications for Exception with the Office of Hearings and Appeals of the Department of Energy. In...

  18. PPPL physicist Brian Grierson wins DOE Early Career Research Program grant

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

    | Princeton Plasma Physics Lab physicist Brian Grierson wins DOE Early Career Research Program grant By John Greenwald May 13, 2014 Tweet Widget Google Plus One Share on Facebook Brian Grierson at the DIII-D tokamak. (Photo by Lisa Petrillo, General Atomics) Brian Grierson at the DIII-D tokamak. Physicist Brian Grierson of the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) has won a highly competitive Early Career Research Program award sponsored by the DOE's

  19. 10 Questions for a Materials Scientist: Brian Larsen | Department of Energy

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

    Brian Larsen 10 Questions for a Materials Scientist: Brian Larsen January 24, 2013 - 10:50am Addthis Brian Larsen is developing the next generation of fuel cell catalysts thanks to the Energy Efficiency and Renewable Energy Postdoctoral Research Awards. | Photo courtesy of Dr. Guido Bender, NREL. Brian Larsen is developing the next generation of fuel cell catalysts thanks to the Energy Efficiency and Renewable Energy Postdoctoral Research Awards. | Photo courtesy of Dr. Guido Bender, NREL.

  20. Geoffrey Taylor Klise

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

    Taylor Klise - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy

  1. Microsoft Word - taylor.doc

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

    the Tropical Western Pacific P. Taylor and R.G. Ellingson Florida State University Tallahassee, Florida Introduction The effective cloud fraction, N e , has been suggested to ...

  2. Tania Smith Taylor | Department of Energy

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

    Tania Smith Taylor About Us Tania Smith Taylor Director, Office of Site Operations Tania Smith Taylor became the new Director of the LM Office of Site Operations in January 2016. ...

  3. Taylor Elected to Royal Society of London

    Office of Scientific and Technical Information (OSTI)

    SLAC, 28 May 1997 Taylor Elected to Royal Society of London Richard Taylor, physics professor at the Stanford Linear Accelerator Center and 1990 Nobel Prize winner, was recently ...

  4. Taylor Munro Energy Systems | Open Energy Information

    Open Energy Info (EERE)

    V4G 1E2 Sector: Solar Product: Taylor Munro focuses on design and installation of solar water heating systems for residential and commercial applications. References: Taylor...

  5. Brian A. Hitson, Director | OSTI, US Dept of Energy Office of Scientific

    Office of Scientific and Technical Information (OSTI)

    and Technical Information Brian A. Hitson, Director Director of OSTI: Brian A. Hitson Brian A. Hitson is Director of the U.S. Department of Energy (DOE) Office of Scientific and Technical Information (OSTI), a DOE corporate function that is managed by the Office of Science. OSTI fulfills agency-wide responsibilities to collect, preserve, and disseminate scientific and technical information emanating from DOE research and development (R&D) activities. Mr. Hitson joined OSTI in 1988 and

  6. Contact Us - U.S. Energy Information Administration (EIA) - U.S. Energy

    Gasoline and Diesel Fuel Update (EIA)

    Information Administration (EIA) State Energy Experts Electricity detailed data Jonathan DeVilbiss 202-586-2992 jonathan.devilbiss@eia.gov Energy consumption by state Yvonne L. Taylor 202-586-1455 yvonne.taylor@eia.gov Energy expenditures by dtate Yvonne L. Taylor 202-586-1455 yvonne.taylor@eia.gov Energy production by state Yvonne L. Taylor 202-586-1455 yvonne.taylor@eia.gov Fuel oil and kerosene sales Dan Walzer 202-586-3511 daniel.walzer@eia.gov Petroleum prime supplier sales Maureen

  7. STATEMENT OF BRIAN D. FAIRBANK Nevada Geothermal Power Inc.'s...

    Open Energy Info (EERE)

    Power Facility Jump to: navigation, search OpenEI Reference LibraryAdd to library Personal Communication: STATEMENT OF BRIAN D. FAIRBANK Nevada Geothermal Power Inc.'s Blue...

  8. complex Rasmussen, Sren G.F.; DeVree, Brian T.; Zou, Yaozhong...

    Office of Scientific and Technical Information (OSTI)

    G.F.; DeVree, Brian T.; Zou, Yaozhong; Kruse, Andrew C.; Chung, Ka Young; Kobilka, Tong Sun; Thian, Foon Sun; Chae, Pil Seok; Pardon, Els; Calinski, Diane; Mathiesen, Jesper M.;...

  9. STATEMENT OF BRIAN D. FAIRBANK Nevada Geothermal Power Inc.'s...

    Open Energy Info (EERE)

    to: navigation, search OpenEI Reference LibraryAdd to library General: STATEMENT OF BRIAN D. FAIRBANK Nevada Geothermal Power Inc.'s Blue Mountain Geothermal Power Facility Author...

  10. OSTIblog Posts by Brian Hitson | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information Brian Hitson Brian Hitson's picture Director, U.S. DOE Office of Scientific and Technical Information DOE OSTI Implements Re-organization: Sticking to Our Knitting While Meeting New Challenges Published on Apr 08, 2015 The Department of Energy (DOE) Office of Scientific and Technical Information (OSTI), a unit of the Office of Science, recently completed a restructuring to fulfill agency-wide responsibilities to collect, preserve, and disseminate

  11. Exact axisymmetric Taylor states for shaped plasmas

    SciTech Connect (OSTI)

    Cerfon, Antoine J. O'Neil, Michael

    2014-06-15

    We present a general construction for exact analytic Taylor states in axisymmetric toroidal geometries. In this construction, the Taylor equilibria are fully determined by specifying the aspect ratio, elongation, and triangularity of the desired plasma geometry. For equilibria with a magnetic X-point, the location of the X-point must also be specified. The flexibility and simplicity of these solutions make them useful for verifying the accuracy of numerical solvers and for theoretical studies of Taylor states in laboratory experiments.

  12. Taylor, Alabama: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    dataset (All States, all geography) US Census Bureau Congressional Districts by Places. Retrieved from "http:en.openei.orgwindex.php?titleTaylor,Alabama&oldid25085...

  13. Taylor, Mississippi: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    dataset (All States, all geography) US Census Bureau Congressional Districts by Places. Retrieved from "http:en.openei.orgwindex.php?titleTaylor,Mississippi&oldid250859...

  14. Taylor, Michigan: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    dataset (All States, all geography) US Census Bureau Congressional Districts by Places. Retrieved from "http:en.openei.orgwindex.php?titleTaylor,Michigan&oldid250858...

  15. Taylor Electric Coop | Open Energy Information

    Open Energy Info (EERE)

    Wisconsin Phone Number: 715-678-2411 or 800-862-2407 Website: taylorelectric.org Facebook: https:www.facebook.compagesTaylor-Electric-Cooperative151538904913522 Outage...

  16. Brian D. Wirth, 2014 | U.S. DOE Office of Science (SC)

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

    Brian D. Wirth, 2014 The Ernest Orlando Lawrence Award Lawrence Award Home Nomination & Selection Guidelines Award Laureates 2010's 2000's 1990's 1980's 1970's 1960's Ceremony The Life of Ernest Orlando Lawrence Contact Information The Ernest Orlando Lawrence Award U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-2411 E: Email Us 2010's Brian D. Wirth, 2014 Print Text Size: A A A FeedbackShare Page Energy Sciences and Innovation:

  17. Nonideal Rayleigh-Taylor mixing

    SciTech Connect (OSTI)

    Sharp, David Howland; Lin, Hyun K; Iwerks, Justin G; Gliman, James G

    2009-01-01

    Rayleigh-Taylor mixing is a classical hydrodynamic Instability, which occurs when a light fluid pushes against a heavy fluid. The two main sources of nonideal behavior in Rayleigh-Taylor (RT) mixing are regularizations (physical and numerical) which produce deviations from a pure Euler equation, scale Invariant formulation, and non Ideal (i.e. experimental) initial conditions. The Kolmogorov theory of turbulence predicts stirring at all length scales for the Euler fluid equations without regularization. We Interpret mathematical theories of existence and non-uniqueness in this context, and we provide numerical evidence for dependence of the RT mixing rate on nonideal regularizations, in other words indeterminacy when modeled by Euler equations. Operationally, indeterminacy shows up as non unique solutions for RT mixing, parametrized by Schmidt and Prandtl numbers, In the large Reynolds number (Euler equation) limit. Verification and validation evidence is presented for the large eddy simulation algorithm used here. Mesh convergence depends on breaking the nonuniqueness with explicit use of the laminar Schmidt and PrandtJ numbers and their turbulent counterparts, defined in terms of subgrid scale models. The dependence of the mixing rate on the Schmidt and Prandtl numbers and other physical parameters will be illustrated. We demonstrate numerically the influence of initial conditions on the mixing rate. Both the dominant short wavelength Initial conditions and long wavelength perturbations are observed to playa role. By examination of two classes of experiments, we observe the absence of a single universal explanation, with long and short wavelength initial conditions, and the various physical and numerical regularizations contributing In different proportions In these two different contexts.

  18. Taylor, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Taylor is a city in Williamson County, Texas. It falls under Texas's 31st congressional...

  19. Microsoft PowerPoint - Closing Summary_Brian Horn_Pete Dessaules_James Crabtree

    National Nuclear Security Administration (NNSA)

    Summary/Closing Discussions Pete Dessaules, NNSA Brian Horn, NRC James Crabtree, NNSA Summary  Multiple presentations focused on the relevancy and significance of NMMSS to: - National security decisions - International commitments and obligations - Mission and programmatic planning - Commerce - Safety and health - Licensing/compliance  Transmit matching issues, e.g., - Batch ID 2 Summary (Cont'd)  Importance and complexities associated with obligations tracking - Tracking the entire

  20. L2:VUQ.P2.03 Brian Adams SNL

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

    SANDIA REPORT SAND2011-2238 Unlimited Release Printed April 2011 CASL L2 Milestone Report: VUQ.Y1.03, "Enable Statistical Sensitivity and UQ Demonstrations for VERA" Brian M. Adams Walter R. Witkowski Yixing Sung Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 94550 Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.

  1. Montana Tribes Realize Long-Held Vision of Acquiring Kerr Dam: Interview with Energy Keepers Inc. CEO Brian Lipscomb

    Office of Energy Efficiency and Renewable Energy (EERE)

    A short interview with Brian Lipscomb, president and CEO of Energy Keepers, Inc., a tribal corporation established in the fall of 2012 to manage the Confederated Salish and Kootenai Tribes’ (CSKT’s) planned acquisition of Kerr Dam.

  2. Taylor County Rural E C C | Open Energy Information

    Open Energy Info (EERE)

    Taylor County Rural E C C Jump to: navigation, search Name: Taylor County Rural E C C Place: Kentucky Phone Number: 1-800-931-4551 Website: www.tcrecc.com Outage Hotline: (800)...

  3. A hybrid Rayleigh-Taylor-current-driven coupled instability in...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: A hybrid Rayleigh-Taylor-current-driven ... March 22, 2017 Title: A hybrid Rayleigh-Taylor-current-driven coupled instability in a ...

  4. VEE-0066- In the Matter of Taylor Oil Company

    Broader source: Energy.gov [DOE]

    On July 30, 1999, Taylor Oil Company (Taylor) of Somerville, New Jersey filed an Application for Exception with the Office of Hearings and Appeals (OHA) of the Department of Energy (DOE). In its...

  5. Brian Wirth

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

    in a steady-state fusion device include extreme particle and thermal fluxes. These energetic fluxes have pronounced impacts on the topology and chemistry of the near-surface...

  6. Brian Tierney

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

    ... The International Conference for High Performance ... to interact with remote computing systems and transfer results to ... While there have been remarkable technology advances ...

  7. Brian Austin

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

    D.Y. Zubarev, B.M. Austin, W.A. Lester Jr, "Practical Aspects of Quantum Monte Carlo for the Electronic Structure of Molecules", Practical Aspects of Computational Chemistry I: An ...

  8. Brian Resor

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

    Resor - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  9. Numerical simulation of Rayleigh-Taylor instabilities involving solids

    SciTech Connect (OSTI)

    Chang, Chong H.

    2015-11-20

    This report is a description of research performed by LANL regarding numeric simulations of Rayleigh-Taylor instability.

  10. L3:VUQ.SAUQ.P2-2.01 Brian Williams LANL

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

    P2-2.01 Brian Williams LANL Completed: 4/25/11 CASL-U-2011-0059-000 Form 836 (7/06) LA-UR- Approved for public release; distribution is unlimited. Los Alamos National Laboratory, an affirmative action/equal opportunity employer, is operated by the Los Alamos National Security, LLC for the National Nuclear Security Administration of the U.S. Department of Energy under contract DE-AC52-06NA25396. By acceptance of this article, the publisher recognizes that the U.S. Government retains a

  11. CTH simulation of PBX-9501 Taylor tests /

    SciTech Connect (OSTI)

    Koby, Joseph R.

    2011-09-01

    During March-May 2011, multiple Taylor impact tests were conducted at LANL, examining the behavior of PBXN-9 and PBX-9501 under rapid loading. Subsequently, a computational hydrodynamics code (CTH) model was developed to mimic the deformation behavior observed in these impact tests with PBX-9501 would likely initiate upon impact. Also examined was whether an inert slud behind the explosive would lead to initiation at lower, more easily attainable velocities. The simplified model used here showed a minimum velocity for ignition of 530 m/s which was unchanged by the addition of a plastic slud behind the sample. The use of a lead slug did lower the minimum velocity to 460 m/s. These values are likely more qualitative at this point because multiple simplifications are currently used in the materials properties and test geometry. The results do show that this approach is capable of determining ignition due to Taylor impact.

  12. J. Taylor Childers III | Argonne National Laboratory

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

    J. Taylor Childers III Assistant Physicist Education 2002 - 2007 University of Minnesota, PhD. in Physics 1998 - 2002 University of Kentucky, BS. in Physics Experience 2013 - present Assistant Physicist at Argonne National Lab, Chicago, IL, USA 2011 - 2013 Fellow at CERN, Geneva, Switzerland 2007 - 2011 Postdoctoral Researcher at Heidelberg University, Heidelberg, Germany Summary of Research I am an Assistant Physicist at Argonne National Laboratory in Chicago, USA. As a member of ATLAS, I am

  13. Taylor Lake Village, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    dataset (All States, all geography) US Census Bureau Congressional Districts by Places. Retrieved from "http:en.openei.orgwindex.php?titleTaylorLakeVillage,Texas&oldid...

  14. Taylor Biomass Energy LLC TBE | Open Energy Information

    Open Energy Info (EERE)

    Biomass Energy LLC TBE Jump to: navigation, search Name: Taylor Biomass Energy, LLC (TBE) Place: Montgomery, New York Zip: 12549-9900 Sector: Biomass Product: Montgomery-based...

  15. A cosmological Slavnov-Taylor identity

    SciTech Connect (OSTI)

    Collins, Hael; Holman, R.; Vardanyan, Tereza E-mail: rh4a@andrew.cmu.edu

    2014-12-01

    We develop a method for treating the consistency relations of inflation that includes the full time-evolution of the state. This approach relies only on the symmetries of the inflationary setting, in particular a residual conformal symmetry in the spatial part of the metric, along with general properties which hold for any quantum field theory. As a result, the consistency relations that emerge, which are essentially the Slavnov-Taylor identities associated with this residual conformal symmetry, apply very generally: they are true of the full Green's functions, hold largely independently of the particular inflationary model, and can be used for arbitrary states. We illustrate these techniques by showing the form assumed by the standard consistency relation between the two and three-point functions for the primordial scalar fluctuations when they are in a Bunch-Davies state. But because we have included the full evolution of the state, this approach works for a general initial state as well and does not need to have assumed that inflation began in the Bunch-Davies state. We explain how the Slavnov-Taylor identity is modified for these more general states.

  16. EA-1841: Department of Energy Loan Guarantee for the Taylor Biomass...

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

    Guarantee for the Taylor Biomass Montgomery Project in the Town of Montgomery, Orange County, New York EA-1841: Department of Energy Loan Guarantee for the Taylor Biomass ...

  17. Microsoft PowerPoint - 12_BRIAN_HORN_NRC and DOE recognition May 13 2014.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    3 Recognitions Brian Horn, NRC Pete Dessaules, DOE/NNSA NRC requirements for Inventory Reporting and Reconciliation  Report Inventory to NMMSS * < 30 days - IAEA selected facilities, Cat-1 sites * < 45 days - Cat-2 sites * < 60 days - Reactors, Cat-3 sites, >350 gram licensees * Prior to March 31 st - licensees authorized < 350 grams fissile * As of Sept. 30 th - Foreign obligated source material holdings  Reconcile inventory with NMMSS within 30 days of submission 2

  18. Microsoft PowerPoint - 3_Gary and Brian_Wednesday 5-22 Transit Matching.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Matching Brian Horn, NRC Gary Hirsch, PSI  What is Transit Matching - Defines IAEA activities to maintain information on the transit accounts of safeguarded nuclear material reported to the Agency. - It is performed on inventory changes which indicate increases, decreases and adjustments to nuclear material balances. - The IAEA receives 2 million nuclear material accounting records a year, in 2012 the US reported 5069 under the voluntary offer (INFCIRC/207) 2 US Documented 1,859 Exports to 23

  19. Microsoft PowerPoint - 3_Obligations case study May 23 2013 - Brian Pete Jessica.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Foreign Obligations Case Study Thursday May 23rd Pete Dessaules Brian Horn Jessica Norles Background * On several occasions, we have been asked to participate in some discussion on tracking and reporting of nuclear materials * Some of the discussions have included speaking with working staff in other countries 2 Export observations * Variations in how export data is reported to NMMSS by U.S. industry 3 Simple case, #1 * Exporter statement - one fuel assembly #0001 - 350 kgs EU / 15kgs U-235 - No

  20. Microsoft PowerPoint - 5_Brian and Pete_Year In ReviewNMMSS2013_in template.pptx

    National Nuclear Security Administration (NNSA)

    STATE OF NMMSS Brian Horn, NRC Peter Dessaules, DOE/NNSA Overview  NMMSS has had a highly successful year in which it reduced reconciliation and closing times, improved report products, and delivered commitments to DOE/NNSA, NRC, and other government agencies on schedule.  This would not be possible without your efforts. 2 Mission Statement  NMMSS is the U.S. Government's official information system containing current and historical accounting data and other related nuclear material

  1. Microsoft PowerPoint - Recent NMSS Interactions with Foreign Countries and Organizationss_Brian Horn_Pete Dessaules [Compatibil

    National Nuclear Security Administration (NNSA)

    Feedback from others Brian Horn, Nuclear Regulatory Commission Pete Dessaules, Department of Energy, National Nuclear Security Administration Feedback from others  Recent routine interactions with representatives of - International Atomic Energy Agency - Australia - Canada - European Commission - Japan - Taiwan 2 How industry reports an export  Example #1, the export of fuel assemblies 3 Number of Lines License Number Header Gross Weight Line Number Batch Number Number of Items Comp Code

  2. Microsoft PowerPoint - Reporting Small Quantities to NMMSS_Brian Horn_Suzanne Ani [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Small Quantities to NMMSS Brian Horn, Suzanne Ani, Nuclear Regulatory Commission Overview  Introduction  Reportable Units  One-Party Transactions (A-M)  Reporting to NMMSS 2 Introduction  NRC regulations require each licensee who transfers or receives SNM to complete a DOE/NRC Form 741, Nuclear Material Transaction Report  DOE also requires NRC licensees to report to NMMSS all receipts, transfers, and inventories of government-owned, -leased, or -loaned material in their

  3. Spotlights Archive | Department of Energy

    Energy Savers [EERE]

    right) Yvonne Deyo (Navarro), Jonathan Graebener (U.S. Army Interagency Fellow), Tania Smith Taylor (DOE LM), April 19, 2016 Uranium Mining and Milling near Rifle, Colorado The ...

  4. Taylor County, Iowa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Taylor County is a county in Iowa. Its FIPS County Code is 173. It is classified as ASHRAE...

  5. Taylor County, Kentucky: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Taylor County is a county in Kentucky. Its FIPS County Code is 217. It is classified as...

  6. Taylor County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Taylor County is a county in Georgia. Its FIPS County Code is 269. It is classified as ASHRAE...

  7. Taylor County, Wisconsin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Taylor County is a county in Wisconsin. Its FIPS County Code is 119. It is classified as...

  8. Taylor County, Florida: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Taylor County is a county in Florida. Its FIPS County Code is 123. It is classified as ASHRAE...

  9. Taylor County, West Virginia: Energy Resources | Open Energy...

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Taylor County is a county in West Virginia. Its FIPS County Code is 091. It is classified as...

  10. Taylor County RECC- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Taylor County RECC offers rebates to residential customers for upgrading to energy efficient insulation and heat pumps. Under the Button-Up insulation upgrade program, a utility representative will...

  11. Suppression of Rayleigh Taylor instability in strongly coupled plasmas

    SciTech Connect (OSTI)

    Das, Amita; Kaw, Predhiman [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

    2014-06-15

    The Rayleigh Taylor instability in a strongly coupled plasma medium has been investigated using the equations of generalized hydrodynamics. It is demonstrated that the visco-elasticity of the strongly coupled medium due to strong inter particle correlations leads to a suppression of the Rayleigh Taylor instability unless certain threshold conditions are met. The relevance of these results to experiments on laser compression of matter to high densities including those related to inertial confinement fusion using lasers has also been shown.

  12. Microsoft PowerPoint - 1_BRIAN_HORN_NMMSS Overrview-May 12 2014.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Monday, May 12, 2014 Pete Dessaules Brian Horn NMMSS-Training Topics * NMMSS Performance 9:30-10am * Obligation Accounting 10:30-11:00 * Reports to the IAEA 11:00-11:20 * Tips from NMMSS staff 11:20-11:40 2 This Afternoon * Denver Ballroom - NMMSS Subcommittee Meetings * Reactor 1:30-3:00 pm * Foreign Obligations 3:30-5:00 pm * Gold Coin Room - One-on-one NMMSS training 1:30-5:00 - NMMSS Overview talk by Pete Dessaules 3 4 NMMSS Overview Monday, May 12, 2014 Pete Dessaules 5 NMMSS * Nuclear *

  13. Microsoft PowerPoint - Reporting data to the IAEA by a newly selected facility_Brian Horn [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    data to the IAEA by a newly selected facility Gary Hirsch, NMMSS Brian Horn, NRC Carol Wormington, URENCO USA Friday June, 28, 2013  IAEA letter to the U.S. Government informing us that, according to Article 2 of the Protocol to the US/IAEA Safeguards Agreement, the IAEA had selected the URENCO USA centrifuge enrichment plant for the provisions of the Reporting Protocol - Letter received by U.S. Mission in Vienna Austria - Copies e-mailed to NRC and other Government Agencies  NRC

  14. Subject: Proposed 216(h) Regulations To: Brian.Mills@hq.doe.gov and Lot.Cooke@hq.doe.gov.

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

    February 12, 2012 Subject: Proposed 216(h) Regulations To: Brian.Mills@hq.doe.gov and Lot.Cooke@hq.doe.gov. We appreciate the opportunity to review the Proposed Regulation for 216(h) of the FPA (16 U.S.C. 824p(h)) and provide comments. After review of the proposed rule, we believe a few changes to the text could greatly improve in the likelihood of reducing the time and cost of necessary environmental reviews, consultations, and permit processing for electric transmission facilities crossing

  15. Multi-Moment ADER-Taylor Methods for Systems of Conservation...

    Office of Scientific and Technical Information (OSTI)

    ADER-Taylor Methods for Systems of Conservation Laws With Source Terms in One Dimension Citation Details In-Document Search Title: Multi-Moment ADER-Taylor Methods for ...

  16. Former Student Turns Thesis Into Energy Savings for Taylor University

    Broader source: Energy.gov [DOE]

    Not long ago Kevin Crosby was an engineering major and the president of Taylor University’s student environmental club, Stewards of Creation. Now with recommendations from his thesis in hand, the Environmental Science Master’s degree candidate is the Upland, Indiana, university’s first Coordinator of Stewardship and Sustainability.

  17. Viscous Rayleigh-Taylor instability in spherical geometry

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mikaelian, Karnig O.

    2016-02-08

    We consider viscous fluids in spherical geometry, a lighter fluid supporting a heavier one. Chandrasekhar [Q. J. Mech. Appl. Math. 8, 1 (1955)] analyzed this unstable configuration providing the equations needed to find, numerically, the exact growth rates for the ensuing Rayleigh-Taylor instability. He also derived an analytic but approximate solution. We point out a weakness in his approximate dispersion relation (DR) and offer one that is to some extent improved.

  18. Finite Cloud Effects at the ACRF TWP Site Patrick Taylor and...

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

    Patrick Taylor and Robert G. Ellingson Dept. of Meteorology, Florida State University, Tallahassee, FL 32306 Data: Observations are taken at the ACRF TWP Site from June 1999 ...

  19. Brian P. Williams

    Office of Scientific and Technical Information (OSTI)

    This interferometer also allows for a unique version of the CHSH-Bell test where the local ... a Clauser-Horne-Shimony-Holt (CHSH) Bell test 8, with entanglement detected for Bell ...

  20. Collisional effects on Rayleigh-Taylor-induced magnetic fields

    SciTech Connect (OSTI)

    Manuel, M. J.-E.; Flaig, M.; Plewa, T.; Li, C. K.; Séguin, F. H.; Frenje, J. A.; Casey, D. T.; Petrasso, R. D.; Hu, S. X.; Betti, R.; Hager, J.; Meyerhofer, D. D.; Smalyuk, V.

    2015-05-15

    Magnetic-field generation from the Rayleigh-Taylor (RT) instability was predicted more than 30 years ago, though experimental measurements of this phenomenon have only occurred in the past few years. These pioneering observations demonstrated that collisional effects are important to B-field evolution. To produce fields of a measurable strength, high-intensity lasers irradiate solid targets to generate the nonaligned temperature and density gradients required for B-field generation. The ablation process naturally generates an unstable system where RT-induced magnetic fields form. Field strengths inferred from monoenergetic-proton radiographs indicate that in the ablation region diffusive effects caused by finite plasma resistivity are not negligible. Results from the first proof-of-existence experiments are reviewed and the role of collisional effects on B-field evolution is discussed in detail.

  1. The cylindrical magnetic Rayleigh-Taylor instability for viscous fluids

    SciTech Connect (OSTI)

    Chambers, K.; Forbes, L. K.

    2012-10-15

    This paper considers a cylindrical Rayleigh-Taylor instability, in which a heavy fluid surrounds a light fluid, and gravity is directed radially inwards. A massive object is located at the centre of the light fluid, and it behaves like a line dipole both for fluid flow and magnetic field strength. The initially circular interface between the two conducting fluids evolves into plumes, dependent on the magnetic and fluid dipole strengths and the nature of the initial disturbance to the interface. A spectral method is presented to solve the time-dependent interface shapes, and results are presented and discussed. Bipolar solutions are possible, and these are of particular relevance to astrophysics. The solutions obtained resemble structures of some HII regions and nebulae.

  2. Jerome I. Friedman, Henry W. Kendall, Richard E. Taylor and the Development

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

    of the Quark Jerome I. Friedman, Henry W. Kendall, Richard E. Taylor and the Development of the Quark Resources with Additional Information Jerome I. Friedman Jerome I. Friedman Courtesy AIP Emilio Segrè Visual Archives, W. F. Meggers Gallery of Nobel Laureates Richard E. Taylor Richard E. Taylor Courtesy of Stanford Linear Accelerator Center Henry W. Kendall Henry W. Kendall Courtesy AIP Emilio Segrè Visual Archive, W. F. Meggers Gallery of Nobel Laureates The 1990 Nobel Prize in Physics

  3. Modeling of Nova indirect drive Rayleigh--Taylor experiments

    SciTech Connect (OSTI)

    Weber, S.V.; Remington, B.A.; Haan, S.W.; Wilson, B.G.; Nash, J.K. )

    1994-11-01

    The growth due to the Rayleigh--Taylor (RT) instability of single-wavelength surface perturbations on planar foils of brominated CH [CH(Br)] and fluorosilicone (FS) was measured. The foils were accelerated by x-ray ablation with temporally shaped drive pulses. A range of initial amplitudes ([ital a][sub 0]) and wavelengths ([lambda]) have been used. This paper focuses upon foils with small [ital a][sub 0]/[lambda], which exhibit substantial growth in the linear regime, and are most sensitive to the calculated growth rate. The CH(Br) foils exhibit slower RT perturbation growth because opacity differences result in a larger ablation velocity and a longer density scale length than for FS. Tabulated opacities from detailed atomic models, OPAL [Astrophys. J. [bold 397], 717 (1992)] and super transition array (STA) [Phys. Rev. A [bold 40], 3183 (1989)] were employed. Unlike previous simulations which employed the average atom (XSN) opacity treatment, parameter adjustments to fit experimental data no longer appear necessary. Nonlocal thermodynamic equilibrium (NLTE) effects do not appear to be important. Other variables which may affect the modeling, such as changes of the equation of state and radiation drive spectrum, were also examined. The current calculational model, which incorporates physically justified choices for these calculational ingredients, agrees with the Nova single wavelength RT perturbation growth data.

  4. Rayleigh-Taylor instabilities with sheared magnetic fields

    SciTech Connect (OSTI)

    Ruderman, M. S. [Solar Physics and Space Plasma Research Centre (SP2RC), University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH (United Kingdom); Terradas, J.; Ballester, J. L. [Departament de Fsica, Universitat de les Illes Balears, E-07122 Palma de Mallorca (Spain)

    2014-04-20

    Magnetic Rayleigh-Taylor (MRT) instabilities may play a relevant role in many astrophysical problems. In this work the effect of magnetic shear on the growth rate of the MRT instability is investigated. The eigenmodes of an interface and a slab model under the presence of gravity are analytically calculated assuming that the orientation of the magnetic field changes in the equilibrium, i.e., there is magnetic shear. We solve the linearized magnetohydrodynamic equations in the incompressible regime. We find that the growth rate is bounded under the presence of magnetic shear. We have derived simple analytical expressions for the maximum growth rate, corresponding to the most unstable mode of the system. These expressions provide the explicit dependence of the growth rate on the various equilibrium parameters. For small angles the growth time is linearly proportional to the shear angle, and in this regime the single interface problem and the slab problem tend to the same result. On the contrary, in the limit of large angles and for the interface problem the growth time is essentially independent of the shear angle. In this regime we have also been able to calculate an approximate expression for the growth time for the slab configuration. Magnetic shear can have a strong effect on the growth rates of the instability. As an application of the results found in this paper we have indirectly determined the shear angle in solar prominence threads using their lifetimes and the estimation of the Alfvn speed of the structure.

  5. On the modeling of the Taylor cylinder impact test for orthotropic textured materials: Calculations and experiments

    SciTech Connect (OSTI)

    Maudlin, P.J.; Bingert, J.F.; House, J.W.

    1997-04-01

    Taylor impact tests using specimens cut from a rolled plate of Ta were conducted. The Ta was well-characterized in terms of flow stress and crystallographic texture. A piece-wise yield surface was interrogated from this orthotropic texture, and used in EPIC-95 3D simulations of the Taylor test. Good agreement was realized between the calculations and the post-test geometries in terms of major and minor side profiles and impact-interface footprints.

  6. THE VIOLATION OF THE TAYLOR HYPOTHESIS IN MEASUREMENTS OF SOLAR WIND TURBULENCE

    SciTech Connect (OSTI)

    Klein, K. G.; Howes, G. G.; TenBarge, J. M.

    2014-08-01

    Motivated by the upcoming Solar Orbiter and Solar Probe Plus missions, qualitative and quantitative predictions are made for the effects of the violation of the Taylor hypothesis on the magnetic energy frequency spectrum measured in the near-Sun environment. The synthetic spacecraft data method is used to predict observational signatures of the violation for critically balanced Alfvénic turbulence or parallel fast/whistler turbulence. The violation of the Taylor hypothesis can occur in the slow flow regime, leading to a shift of the entire spectrum to higher frequencies, or in the dispersive regime, in which the dissipation range spectrum flattens at high frequencies. It is found that Alfvénic turbulence will not significantly violate the Taylor hypothesis, but whistler turbulence will. The flattening of the frequency spectrum is therefore a key observational signature for fast/whistler turbulence.

  7. Validity of the Taylor hypothesis for linear kinetic waves in the weakly collisional solar wind

    SciTech Connect (OSTI)

    Howes, G. G.; Klein, K. G.; TenBarge, J. M.

    2014-07-10

    The interpretation of single-point spacecraft measurements of solar wind turbulence is complicated by the fact that the measurements are made in a frame of reference in relative motion with respect to the turbulent plasma. The Taylor hypothesis—that temporal fluctuations measured by a stationary probe in a rapidly flowing fluid are dominated by the advection of spatial structures in the fluid rest frame—is often assumed to simplify the analysis. But measurements of turbulence in upcoming missions, such as Solar Probe Plus, threaten to violate the Taylor hypothesis, either due to slow flow of the plasma with respect to the spacecraft or to the dispersive nature of the plasma fluctuations at small scales. Assuming that the frequency of the turbulent fluctuations is characterized by the frequency of the linear waves supported by the plasma, we evaluate the validity of the Taylor hypothesis for the linear kinetic wave modes in the weakly collisional solar wind. The analysis predicts that a dissipation range of solar wind turbulence supported by whistler waves is likely to violate the Taylor hypothesis, while one supported by kinetic Alfvén waves is not.

  8. The role of the Rayleigh--Taylor instability in laser-driven burnthrough experiments

    SciTech Connect (OSTI)

    Delettrez, J.; Bradley, D.K.; Verdon, C.P. )

    1994-07-01

    Experiments were conducted to confirm that the Rayleigh--Taylor instability is the main process controlling the burnthrough time in imploding spherical experiments. In these experiments the laser irradiates targets overcoated with a parylene layer, in which one or more thin signature layers of moderate- to high-[ital Z] material are embedded to signal the penetration of the heat front. Target parameters were varied to study the effect on the burnthrough time of changes to target acceleration, Atwood number, and ablation velocity. The effects of improved laser uniformity through the introduction of smoothing by spectral dispersion are also presented. The results agree well with those obtained from a multimode mix model. This suggests that burnthrough experiments can be used to measure improvements in laser-irradiation or target-fabrication uniformity and to test methods to mitigate the growth of the Rayleigh--Taylor instability.

  9. Investigation of the Rayleigh-Taylor and Richtmyer-Meshkov instabilities

    SciTech Connect (OSTI)

    Bonazza, Riccardo; Anderson, Mark; Smith, Leslie

    2005-02-09

    The present research program is centered on the experimental and numerical study of two instabilities that develop at the interface between two different fluids when the interface experiences an impulsive or a constant acceleration. The instabilities, called the Richtmyer-Meshkov and Rayleigh-Taylor instability, respectively, adversely affect target implosion in experiments aimed at the achievement of nuclear fusion by inertial confinement by causing the nuclear fuel contained in a target and the shell material to mix, leading to contamination of the fuel, yield reduction or no ignition at all. The laboratory experiments summarized in this report include shock tube experiments to study a shock-accelerated bubble and a shock-accelerated 2-D sinusoidal interface; and experiments based on the use of magnetorheological fluids for the study of the Rayleigh-Taylor instability. Computational experiments based on the shock tube experimental conditions are also reported.

  10. Investigation of the Rayleigh-Taylor and Richtmyer-Meshkov instabilities

    SciTech Connect (OSTI)

    Riccardo Bonazza, Mark Anderson, Jason Oakley

    2006-11-03

    The present research program is centered on the experimental and numerical study of two instabilities that develop at the interface between two different fluids when the interface experiences an impulsive or a constant acceleration. The instabilities, called the Richtmyer-Meshkov and Rayleigh-Taylor instability, respectively, adversely affect target implosion in experiments aimed at the achievement of nuclear fusion by inertial confinement by causing the nuclear fuel contained in a target and the shell material to mix, leading to contamination of the fuel, yield reduction or no ignition at all. The laboratory experiments summarized in this report include shock tube experiments to study a shock-accelerated bubble and a shock-accelerated 2-D sinusoidal interface; and experiments based on the use of magnetorheological fluids for the study of the Rayleigh-Taylor instability. Computational experiments based on the shock tube experimental conditions are also reported.

  11. Observation of Magnetocoriolis Waves in a Liquid Metal Taylor-Couette Experiment

    SciTech Connect (OSTI)

    Nornberg, M. D.; Ji, H.; Schartman, E.; Roach, A.; Goodman, J.

    2009-09-14

    The first observation of fast and slow magnetocoriolis (MC) waves in a laboratory experiment is reported. Rotating nonaxisymmetric modes arising from a magnetized turbulent Taylor-Couette flow of liquid metal are identified as the fast and slow MC waves by the dependence of the rotation frequency on the applied field strength. The observed slow MC wave is marginally damped but will become destabilized by the magnetorotational instability with a modest increase in rotation rate.

  12. George Taylor, Ph.D. Founder, Palmetto Energy Institute Senior Fellow, ATI Center for Energy Studies

    Gasoline and Diesel Fuel Update (EIA)

    Copyright © 2013 PERF George Taylor, Ph.D. Founder, Palmetto Energy Institute Senior Fellow, ATI Center for Energy Studies EIA Workshop on LCOE / LACE July 25, 2013 Improving the Completeness and Accuracy of Levelized Cost of Electricity Calculations Copyright © 2013 PERF EIA 2012 Annual Energy Outlook Estimated Levelized Cost of New Generation Sources, 2017 U.S. Average Levelized Costs ($2010 per MWh) for plants entering service in 2017 Levelized Fixed Variable Trans- Total Capacity Capital

  13. Rayleigh-Taylor-Instability Evolution in Colliding-Plasma-Jet Experiments with Magnetic and Viscous Stabilization

    SciTech Connect (OSTI)

    Adams, Colin Stuart

    2015-01-15

    The Rayleigh-Taylor instability causes mixing in plasmas throughout the universe, from micron-scale plasmas in inertial confinement fusion implosions to parsec-scale supernova remnants. The evolution of this interchange instability in a plasma is influenced by the presence of viscosity and magnetic fields, both of which have the potential to stabilize short-wavelength modes. Very few experimental observations of Rayleigh-Taylor growth in plasmas with stabilizing mechanisms are reported in the literature, and those that are reported are in sub-millimeter scale plasmas that are difficult to diagnose. Experimental observations in well-characterized plasmas are important for validation of computational models used to make design predictions for inertial confinement fusion efforts. This dissertation presents observations of instability growth during the interaction between a high Mach-number, initially un-magnetized plasma jet and a stagnated, magnetized plasma. A multi-frame fast camera captures Rayleigh-Taylor-instability growth while interferometry, spectroscopy, photodiode, and magnetic probe diagnostics are employed to estimate plasma parameters in the vicinity of the collision. As the instability grows, an evolution to longer mode wavelength is observed. Comparisons of experimental data with idealized magnetohydrodynamic simulations including a physical viscosity model suggest that the observed instability evolution is consistent with both magnetic and viscous stabilization. These data provide the opportunity to benchmark computational models used in astrophysics and fusion research.

  14. Linear study of Rayleigh-Taylor instability in a diffusive quantum plasma

    SciTech Connect (OSTI)

    Momeni, Mahdi

    2013-08-15

    The linear Rayleigh-Taylor (RT) instability in an incompressible quantum plasma is investigated on the basis of quantum magnetohydrodynamic model. It is shown that the occurrence of RT instability depends on density-temperature inhomogeneity (characteristic lengths) on one hand, and the system layer size on the other. It is also observed that the combined effects of external magnetic field, diffusivity, and quantum pressure significantly modify the dispersion properties of system in both the parallel and perpendicular directions. For any case, the imaginary and real parts of dispersion relation are presented and the possibility and conditions for the instability growth rate are discussed.

  15. Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Adams, Colin S.; Moser, Auna L.; Hsu, Scott C.

    2015-11-06

    We present time-resolved observations of Rayleigh-Taylor-instability (RTI) evolution at the interface between an unmagnetized plasma jet colliding with a stagnated, magnetized plasma. The observed instability growth time (~10μs) is consistent with the estimated linear RTI growth rate calculated using experimentally inferred values of density (~1014cm–3) and deceleration (~109 m/s2). The observed mode wavelength (≳1 cm) nearly doubles within a linear growth time. Furthermore, theoretical estimates of magnetic and viscous stabilization and idealized magnetohydrodynamic simulations including a physical viscosity model both suggest that the observed instability evolution is subject to magnetic and/or viscous effects.

  16. M. D. Nornberg, N. Z. Taylor, C. B. Forest, K. Rahbarnia, and E. Kaplan

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

    Optimization of magnetic amplification by flow constraints in turbulent liquid sodiuma) M. D. Nornberg, N. Z. Taylor, C. B. Forest, K. Rahbarnia, and E. Kaplan Citation: Physics of Plasmas (1994-present) 21, 055903 (2014); doi: 10.1063/1.4875335 View online: http://dx.doi.org/10.1063/1.4875335 View Table of Contents: http://scitation.aip.org/content/aip/journal/pop/21/5?ver=pdfcov Published by the AIP Publishing Articles you may be interested in Vortex shedding in flow past an inclined flat

  17. Weakly nonlinear Rayleigh-Taylor instability of a finite-thickness fluid layer

    SciTech Connect (OSTI)

    Wang, L. F. Ye, W. H. Liu, Jie; He, X. T.; Guo, H. Y.; Wu, J. F. Zhang, W. Y.

    2014-12-15

    A weakly nonlinear (WN) model has been developed for the Rayleigh-Taylor instability of a finite-thickness incompressible fluid layer (slab). We derive the coupling evolution equations for perturbations on the (upper) “linearly stable” and (lower) “linearly unstable” interfaces of the slab. Expressions of temporal evolutions of the amplitudes of the perturbation first three harmonics on the upper and lower interfaces are obtained. The classical feedthrough (interface coupling) solution obtained by Taylor [Proc. R. Soc. London A 201, 192 (1950)] is readily recovered by the first-order results. Our third-order model can depict the WN perturbation growth and the saturation of linear (exponential) growth of the perturbation fundamental mode on both interfaces. The dependence of the WN perturbation growth and the slab distortion on the normalized layer thickness (kd) is analytically investigated via the third-order solutions. Comparison is made with Jacobs-Catton's formula [J. W. Jacobs and I. Catton, J. Fluid Mech. 187, 329 (1988)] of the position of the “linearly unstable” interface. Using a reduced formula, the saturation amplitude of linear growth of the perturbation fundamental mode is studied. It is found that the finite-thickness effects play a dominant role in the WN evolution of the slab, especially when kd < 1. Thus, it should be included in applications where the interface coupling effects are important, such as inertial confinement fusion implosions and supernova explosions.

  18. Large-eddy simulation of the Rayleigh-Taylor instability on a massively parallel computer

    SciTech Connect (OSTI)

    Amala, P.A.K.

    1995-03-01

    A computational model for the solution of the three-dimensional Navier-Stokes equations is developed. This model includes a turbulence model: a modified Smagorinsky eddy-viscosity with a stochastic backscatter extension. The resultant equations are solved using finite difference techniques: the second-order explicit Lax-Wendroff schemes. This computational model is implemented on a massively parallel computer. Programming models on massively parallel computers are next studied. It is desired to determine the best programming model for the developed computational model. To this end, three different codes are tested on a current massively parallel computer: the CM-5 at Los Alamos. Each code uses a different programming model: one is a data parallel code; the other two are message passing codes. Timing studies are done to determine which method is the fastest. The data parallel approach turns out to be the fastest method on the CM-5 by at least an order of magnitude. The resultant code is then used to study a current problem of interest to the computational fluid dynamics community. This is the Rayleigh-Taylor instability. The Lax-Wendroff methods handle shocks and sharp interfaces poorly. To this end, the Rayleigh-Taylor linear analysis is modified to include a smoothed interface. The linear growth rate problem is then investigated. Finally, the problem of the randomly perturbed interface is examined. Stochastic backscatter breaks the symmetry of the stationary unstable interface and generates a mixing layer growing at the experimentally observed rate. 115 refs., 51 figs., 19 tabs.

  19. SHOCK CORRUGATION BY RAYLEIGH-TAYLOR INSTABILITY IN GAMMA-RAY BURST AFTERGLOW JETS

    SciTech Connect (OSTI)

    Duffell, Paul C.; MacFadyen, Andrew I. E-mail: macfadyen@nyu.edu

    2014-08-10

    Afterglow jets are Rayleigh-Taylor unstable and therefore turbulent during the early part of their deceleration. There are also several processes which actively cool the jet. In this Letter, we demonstrate that if cooling significantly increases the compressibility of the flow, the turbulence collides with the forward shock, destabilizing and corrugating it. In this case, the forward shock is turbulent enough to produce the magnetic fields responsible for synchrotron emission via small-scale turbulent dynamo. We calculate light curves assuming the magnetic field is in energy equipartition with the turbulent kinetic energy and discover that dynamic magnetic fields are well approximated by a constant magnetic-to-thermal energy ratio of 1%, though there is a sizeable delay in the time of peak flux as the magnetic field turns on only after the turbulence has activated. The reverse shock is found to be significantly more magnetized than the forward shock, with a magnetic-to-thermal energy ratio of the order of 10%. This work motivates future Rayleigh-Taylor calculations using more physical cooling models.

  20. Validation Study of Unnotched Charpy and Taylor-Anvil Impact Experiments using Kayenta

    SciTech Connect (OSTI)

    Kamojjala, Krishna; Lacy, Jeffrey; Chu, Henry S.; Brannon, Rebecca

    2015-03-01

    Validation of a single computational model with multiple available strain-to-failure fracture theories is presented through experimental tests and numerical simulations of the standardized unnotched Charpy and Taylor-anvil impact tests, both run using the same material model (Kayenta). Unnotched Charpy tests are performed on rolled homogeneous armor steel. The fracture patterns using Kayentas various failure options that include aleatory uncertainty and scale effects are compared against the experiments. Other quantities of interest include the average value of the absorbed energy and bend angle of the specimen. Taylor-anvil impact tests are performed on Ti6Al4V titanium alloy. The impact speeds of the specimen are 321 m/s and 393 m/s. The goal of the numerical work is to reproduce the damage patterns observed in the laboratory. For the numerical study, the Johnson-Cook failure model is used as the ductile fracture criterion, and aleatory uncertainty is applied to rate-dependence parameters to explore its effect on the fracture patterns.

  1. NREL: Energy Systems Integration - ESIF Workshop on Frontiers...

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

    Nonlinear Oscillators and Self-Organizing Power Electronics Systems Brian Johnson, NREL Representing Storage and Demand Response in Power System Operations Josh A. Taylor, ...

  2. A solution to Rayleigh-Taylor instabilities. Bubbles, spikes, and their scalings

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mikaelian, Karnig O.

    2014-05-12

    A fluid that pushes on and accelerates a heavier fluid, small perturbations at their interface grows with time and lead. to turbulent mixing. The same instability, known as the Rayleigh-Taylor instability, operates when a heavy fluid is supported by a lighter fluid in a gravitational field. Moreover, it has a particularly deleterious effect on inertial-confinement-fusion implosions and is known to operate over 18 orders of magnitude in dimension. We propose analytic expressions for the bubble and spike amplitudes and mixing widths in the linear, nonlinear, and turbulent regimes. They cover arbitrary density ratios and accelerations that are constant or changingmore » relatively slowly with time. Here, we discuss their scalings and compare them with simulations and experiments.« less

  3. Noise-Sustained Convective Instability in a Magnetized Taylor-Couette Flow

    SciTech Connect (OSTI)

    W. Liu

    2009-02-20

    The helical magnetorotational instability of the magnetized Taylor-Couette flow is studied numerically in a finite cylinder. A distant upstream insulating boundary is shown to stabilize the convective instability entirely while reducing the growth rate of the absolute instability. The reduction is less severe with larger height. After modeling the boundary conditions properly, the wave patterns observed in the experiment turn out to be a noise-sustained convective instability. After the source of the noise resulted from unstable Ekman and Stewartson layers is switched off, a slowly-decaying inertial oscillation is observed in the simulation. We reach the conclusion that the experiments completed to date have not yet reached the regime of absolute instability.

  4. Noise-sustained convective instability in a magnetized Taylor-Couette flow

    SciTech Connect (OSTI)

    Liu, Wei

    2008-01-01

    The helical magnetorotational instability of the magnetized Taylor-Couette flow is studied numerically in a finite cylinder. A distant upstream insulating boundary is shown to stabilize the convective instability entirely while reducing the growth rate of the absolute instability. The reduction is less severe with larger height. After modeling the boundary conditions properly, the wave patterns observed in the experiment turn out to be a noise-sustained convective instability. After the source of the noise resulted from unstable Ekman and Stewartson layers is switched off, a slowly-decaying inertial oscillation is observed in the simulation. We reach the conclusion that the experiments completed to date have not yet reached the regime of absolute instability.

  5. Rayleigh-Taylor Instability within Sediment Layers Due to Gas Retention: Preliminary Theory and Experiments

    SciTech Connect (OSTI)

    Gauglitz, Phillip A.; Wells, Beric E.; Buchmiller, William C.; Rassat, Scot D.

    2013-03-21

    In Hanford underground waste storage tanks, a typical waste configuration is settled beds of waste particles beneath liquid layers. The settled beds are typically composed of layers, and these layers can have different physical and chemical properties. One postulated configuration within the settled bed is a less-dense layer beneath a more-dense layer. The different densities can be a result of different gas retention in the layers or different degrees of settling and compaction in the layers. This configuration can experience a Rayleigh-Taylor (RT) instability where the less dense lower layer rises into the upper layer. Previous studies of gas retention and release have not considered potential buoyant motion within a settle bed of solids. The purpose of this report is to provide a review of RT instabilities, discuss predictions of RT behavior for sediment layers, and summarize preliminary experimental observations of RT instabilities in simulant experiments.

  6. Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects

    SciTech Connect (OSTI)

    Adams, Colin S.; Moser, Auna L.; Hsu, Scott C.

    2015-11-06

    We present time-resolved observations of Rayleigh-Taylor-instability (RTI) evolution at the interface between an unmagnetized plasma jet colliding with a stagnated, magnetized plasma. The observed instability growth time (~10μs) is consistent with the estimated linear RTI growth rate calculated using experimentally inferred values of density (~1014cm–3) and deceleration (~109 m/s2). The observed mode wavelength (≳1 cm) nearly doubles within a linear growth time. Furthermore, theoretical estimates of magnetic and viscous stabilization and idealized magnetohydrodynamic simulations including a physical viscosity model both suggest that the observed instability evolution is subject to magnetic and/or viscous effects.

  7. Experimental and numerical investigations of beryllium strength models using the Rayleigh-Taylor instability

    SciTech Connect (OSTI)

    Henry de Frahan, M. T.; Belof, J. L.; Cavallo, R. M.; Raevsky, V. A.; Ignatova, O. N.; Lebedev, A.; Ancheta, D. S.; El-dasher, B. S.; Florando, J. N.; Gallegos, G. F.; Johnsen, E.; LeBlanc, M. M.

    2015-06-14

    A recent collaboration between LLNL and VNIIEF has produced a set of high explosive driven Rayleigh-Taylor strength data for beryllium. Design simulations using legacy strength models from Steinberg-Lund and Preston-Tonks-Wallace (PTW) suggested an optimal design that would delineate between not just different strength models, but different parameters sets of the PTW model. Application of the models to the post-shot results, however, shows close to classical growth. We characterize the material properties of the beryllium tested in the experiments. We also discuss recent efforts to simulate the data using the legacy strength models as well as the more recent RING relaxation model developed at VNIIEF. Finally, we present shock and ramp-loading recovery experiments conducted as part of the collaboration.

  8. The magnetic Rayleigh-Taylor instability for inviscid and viscous fluids

    SciTech Connect (OSTI)

    Chambers, K.; Forbes, L. K.

    2011-05-15

    The Rayleigh-Taylor instability arises whenever two fluids with different densities are arranged such that the heavier fluid sits above the lighter fluid, with a sharp interface in between. The magnetic Rayleigh-Taylor instability has the further complication due to the presence of a magnetic field throughout both media. The two fluids in question may also have differing magnetic properties, such as the magnetic permeability. When the fluids in consideration are in fact plasmas comprised of charged particles, induced currents, magnetic fields, and Lorentz forces can all act in ways that will affect the stability of the system. Stable base flows exist for the 2D case, and small sinusoidal disturbances to the base flow will grow in the unstable scenario. The numerical method described in this paper calculates the growth of the interface in the nonlinear regime, since closed form solutions are obtained only in the linear approximation. Through the analysis of both the fluid and magnetic vorticities and streamfunctions, the simulated results can be explained from the principles of magnetohydrodynamics. A range of simulations is presented, looking at cases with different initial conditions, cases with strong and weak magnetic fields, and cases with magnetic fields oriented at different angles relative to the interface of the two fluids. It is shown in particular how different initial conditions give rise to outcomes that are very different in terms of the geometry of the interface between the two fluids, primarily the differences between a single mode disturbance and a multimode disturbance to the interface at time t = 0.

  9. EA-1841: Department of Energy Loan Guarantee for the Taylor Biomass Montgomery Project in the Town of Montgomery, Orange County, New York

    Broader source: Energy.gov [DOE]

    Taylor Biomass, LLC (Taylor) submitted an application to DOE for a Federal loan guarantee to support the construction and startup of a biomass gasification-to energy facility at a 95-acre recycling facility in the Town of Montgomery, Orange County, NY. The Project would involve the construction of a Post-Collection Separation Facility, a Gasification System and a Combined Cycle Gas Turbine Power Island.

  10. Experimental techniques for measuring Rayleigh-Taylor instability in inertial confinement fusion (ICF)

    SciTech Connect (OSTI)

    Smalyuk, V A

    2012-06-07

    Rayleigh-Taylor (RT) instability is one of the major concerns in inertial confinement fusion (ICF) because it amplifies target modulations in both acceleration and deceleration phases of implosion, which leads to shell disruption and performance degradation of imploding targets. This article reviews experimental results of the RT growth experiments performed on OMEGA laser system, where targets were driven directly with laser light. RT instability was studied in the linear and nonlinear regimes. The experiments were performed in acceleration phase, using planar and spherical targets, and in deceleration phase of spherical implosions, using spherical shells. Initial target modulations consisted of 2-D pre-imposed modulations, and 2-D and 3-D modulations imprinted on targets by the non-uniformities in laser drive. In planar geometry, the nonlinear regime was studied using 3-D modulations with broadband spectra near nonlinear saturation levels. In acceleration-phase, the measured modulation Fourier spectra and nonlinear growth velocities are in good agreement with those predicted by Haan's model [Haan S W 1989 Phys. Rev. A 39 5812]. In a real-space analysis, the bubble merger was quantified by a self-similar evolution of bubble size distributions [Oron D et al 2001 Phys. Plasmas 8, 2883]. The 3-D, inner-surface modulations were measured to grow throughout the deceleration phase of spherical implosions. RT growth rates are very sensitive to the drive conditions, therefore they can be used to test and validate drive physics in hydrodynamic codes used to design ICF implosions. Measured growth rates of pre-imposed 2-D target modulations below nonlinear saturation levels were used to validate non-local thermal electron transport model in laser-driven experiments.

  11. The mitigating effect of magnetic fields on Rayleigh-Taylor unstable inertial confinement fusion plasmas

    SciTech Connect (OSTI)

    Srinivasan, Bhuvana; Tang, Xian-Zhu

    2013-05-15

    Rayleigh-Taylor (RT) instabilities at interfaces of disparate mass densities have long been known to generate magnetic fields during inertial confinement fusion implosions. An externally applied magnetic field can also be efficiently amplified by RT instabilities. The focus here is on magnetic field generation and amplification at the gas-ice interface which is RT unstable during the deceleration phase of the implosion. RT instabilities lead to undesirable mix of hot and cold plasmas which enhances thermal energy loss and tends to produce a more massive warm-spot instead of a hot-spot. Two mechanisms are shown here to mitigate the thermal energy loss from the hot-spot. The first mechanism is the reduction of electron thermal conductivity with interface-aligned magnetic fields. This can occur through self-generated magnetic fields via the Biermann battery effect as well as through externally applied magnetic fields that undergo an exponential growth via the stretch-and-fold magnetohydrodynamic dynamo. Self-generated magnetic fields during RT evolution can result in a factor of 2−10 decrease in the electron thermal conductivity at the gas-ice interface, while externally applied magnetic fields that are compressed to 6–1000 T at the onset of deceleration (corresponding to pre-implosion external fields of 0.06–10 T) could result in a factor of 2–500 reduction in electron thermal conductivity at the gas-ice interface. The second mechanism to mitigate thermal energy loss from the hot-spot is to decrease the interface mixing area between the hot and cold plasmas. This is achieved through large external magnetic fields of 1000 T at the onset of deceleration which damp short-wavelength RT modes and long-wavelength Kelvin-Helmholtz modes thus significantly slowing the RT growth and reducing mix.

  12. Rayleigh-Taylor instability at spherical interfaces between viscous fluids: Fluid/vacuum interface

    SciTech Connect (OSTI)

    Terrones, Guillermo; Carrara, Mark D.

    2015-05-01

    For a spherical interface of radius R separating two different homogeneous regions of incompressible viscous fluids under the action of a radially directed acceleration, we perform a linear stability analysis in terms of spherical surface harmonics Y n to derive the dispersion relation. The instability behavior is investigated by computing the growth rates and the most-unstable modes as a function of the spherical harmonic degree n. This general methodology is applicable to the entire parameter space spanned by the Atwood number, the viscosity ratio, and the dimensionless number B = (?R?2/?)/ R (where ?R, ?2 and ?2 are the local radial acceleration at the interface, and the density and viscosity of the denser overlying fluid, respectively). While the mathematical formulation here is general, this paper focuses on instability that arises at a spherical viscous fluid/vacuum interface as there is a great deal to be learned from the effects of one-fluid viscosity and sphericity alone. To quantify and understand the effect that curvature and radial accelerationhave on the Rayleigh-Taylor instability, a comparison of the growth rates, under homologous driving conditions, between the planar and spherical interfaces is performed. The derived dispersion relation for the planar interface accounts for an underlying finite fluid region of thickness L and normal acceleration ?R. Under certain conditions, the development of the most-unstable modes at a spherical interface can take place via the superposition of two adjacent spherical harmonics Yn and Yn+1. This bimodality in the evolution of disturbances in the linear regime does not have a counterpart in the planar configuration where the most-unstable modes are associated with a unique wave number.

  13. Rayleigh-Taylor instability at spherical interfaces between viscous fluids: Fluid/vacuum interface

    SciTech Connect (OSTI)

    Terrones, Guillermo; Carrara, Mark D.

    2015-05-01

    For a spherical interface of radius R separating two different homogeneous regions of incompressible viscous fluids under the action of a radially directed acceleration, we perform a linear stability analysis in terms of spherical surface harmonics Y n to derive the dispersion relation. The instability behavior is investigated by computing the growth rates and the most-unstable modes as a function of the spherical harmonic degree n. This general methodology is applicable to the entire parameter space spanned by the Atwood number, the viscosity ratio, and the dimensionless number B = (αRΡ²2/μ²²/³ R (where αR, Ρ2 and μ2 are the local radial acceleration at the interface, and the density and viscosity of the denser overlying fluid, respectively). While the mathematical formulation here is general, this paper focuses on instability that arises at a spherical viscous fluid/vacuum interface as there is a great deal to be learned from the effects of one-fluid viscosity and sphericity alone. To quantify and understand the effect that curvature and radial accelerationhave on the Rayleigh-Taylor instability, a comparison of the growth rates, under homologous driving conditions, between the planar and spherical interfaces is performed. The derived dispersion relation for the planar interface accounts for an underlying finite fluid region of thickness L and normal acceleration αR. Under certain conditions, the development of the most-unstable modes at a spherical interface can take place via the superposition of two adjacent spherical harmonics Yn and Yn+1. This bimodality in the evolution of disturbances in the linear regime does not have a counterpart in the planar configuration where the most-unstable modes are associated with a unique wave number.

  14. Rayleigh-Taylor instability at spherical interfaces between viscous fluids: Fluid/vacuum interface

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Terrones, Guillermo; Carrara, Mark D.

    2015-05-01

    For a spherical interface of radius R separating two different homogeneous regions of incompressible viscous fluids under the action of a radially directed acceleration, we perform a linear stability analysis in terms of spherical surface harmonics Y n to derive the dispersion relation. The instability behavior is investigated by computing the growth rates and the most-unstable modes as a function of the spherical harmonic degree n. This general methodology is applicable to the entire parameter space spanned by the Atwood number, the viscosity ratio, and the dimensionless number B = (αRΡ²2/μ²²)¹/³ R (where αR, Ρ2 and μ2 are the localmore » radial acceleration at the interface, and the density and viscosity of the denser overlying fluid, respectively). While the mathematical formulation here is general, this paper focuses on instability that arises at a spherical viscous fluid/vacuum interface as there is a great deal to be learned from the effects of one-fluid viscosity and sphericity alone. To quantify and understand the effect that curvature and radial accelerationhave on the Rayleigh-Taylor instability, a comparison of the growth rates, under homologous driving conditions, between the planar and spherical interfaces is performed. The derived dispersion relation for the planar interface accounts for an underlying finite fluid region of thickness L and normal acceleration αR. Under certain conditions, the development of the most-unstable modes at a spherical interface can take place via the superposition of two adjacent spherical harmonics Yn and Yn+1. This bimodality in the evolution of disturbances in the linear regime does not have a counterpart in the planar configuration where the most-unstable modes are associated with a unique wave number.« less

  15. Viscous effects on the Rayleigh-Taylor instability with background temperature gradient

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gerashchenko, Sergiy; Livescu, Daniel

    2016-07-28

    Here we studied the growth rate of the compressible Rayleigh-Taylor instability in the presence of a background temperature gradient, Θ, using a normal mode analysis. The effect of Θ variation is examined for three interface types corresponding to the combinations of the viscous properties of the fluids (inviscid-inviscid, viscous-viscous, and viscous-inviscid) at different Atwood numbers, At, and when at least one of the fluids' viscosity is non-zero, as a function of the Grashof number. For the general case, the resulting ordinary differential equations are solved numerically; however, dispersion relations for the growth rate are presented for several limiting cases. Anmore » analytical solution is found for the inviscid-inviscid interface and the corresponding dispersion equation for the growth rate is obtained in the limit of large Θ. For the viscous-inviscid case, a dispersion relation is derived in the incompressible limit and Θ=0. Compared to Θ=0 case, the role of Θ<0 (hotter light fluid) is destabilizing and becomes stabilizing when Θ>0 (colder light fluid). The most pronounced effect of Θ ≠ 0 is found at low At and/or at large perturbation wavelengths relative to the domain size for all interface types. On the other hand, at small perturbation wavelengths relative to the domain size, the growth rate for the Θ<0 case exceeds the infinite domain incompressible constant density result. The results are applied to two practical examples, using sets of parameters relevant to Inertial Confinement Fusion coasting stage and solar corona plumes. The role of viscosity on the growth rate reduction is discussed together with highlighting the range of wavenumbers most affected by viscosity. The viscous effects further increase in the presence of background temperature gradient, when the viscosity is temperature dependent.« less

  16. Temporal evolution of bubble tip velocity in classical Rayleigh-Taylor instability at arbitrary Atwood numbers

    SciTech Connect (OSTI)

    Liu, W. H.; HEDPS and CAPT, Peking University, Beijing 100871 ; Wang, L. F.; Ye, W. H.; Institute of Applied Physics and Computational Mathematics, Beijing 100088; Department of Physics, Zhejiang University, Hangzhou 310027 ; He, X. T.; Institute of Applied Physics and Computational Mathematics, Beijing 100088

    2013-06-15

    In this research, the temporal evolution of the bubble tip velocity in Rayleigh-Taylor instability (RTI) at arbitrary Atwood numbers and different initial perturbation velocities with a discontinuous profile in irrotational, incompressible, and inviscid fluids (i.e., classical RTI) is investigated. Potential models from Layzer [Astrophys. J. 122, 1 (1955)] and perturbation velocity potentials from Goncharov [Phys. Rev. Lett. 88, 134502 (2002)] are introduced. It is found that the temporal evolution of bubble tip velocity [u(t)] depends essentially on the initial perturbation velocity [u(0)]. First, when the u(0)

  17. A Method for Selecting Software for Dynamic Event Analysis II: the Taylor Anvil and Dynamic Brazilian Tests

    SciTech Connect (OSTI)

    W. D. Richins; J. M. Lacy; T. K. Larson; S. R. Novascone

    2008-05-01

    New nuclear power reactor designs will require resistance to a variety of possible malevolent attacks as well as traditional dynamic accident scenarios. The design/analysis team may be faced with a broad range of phenomena including air and ground blasts, high-velocity penetrators or shaped charges, and vehicle or aircraft impacts. With a host of software tools available to address these high-energy events, the analysis team must evaluate and select the software most appropriate for their particular set of problems. The accuracy of the selected software should then be validated with respect to the phenomena governing the interaction of the threat and structure. Several software codes are available for the study of blast, impact, and other shock phenomena. At the Idaho National Laboratory (INL), a study is underway to investigate the comparative characteristics of a group of shock and high-strain rate physics codes including ABAQUS, LS-DYNA, CTH, ALEGRA, and ALE-3D. In part I of this report, a series of five benchmark problems to exercise some important capabilities of the subject software was identified. The benchmark problems selected are a Taylor cylinder test, a split Hopkinson pressure bar test, a free air blast, the dynamic splitting tension (Brazilian) test, and projectile penetration of a concrete slab. Part II-- this paper-- reports the results of two of the benchmark problems: the Taylor cylinder and the dynamic Brazilian test. The Taylor cylinder test is a method to determine the dynamic yield properties of materials. The test specimen is a right circular cylinder which is impacted against a theoretically rigid target. The cylinder deforms upon impact, with the final shape depending upon the dynamic yield stress, in turn a function of strain and strain rate. The splitting tension test, or Brazilian test, is a method to measure the tensile strength of concrete using a cylindrical specimen. The specimen is loaded diametrically in compression, producing a

  18. NREL: Energy Sciences - Brian D. Fluegel

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

    on spontaneous ordering in semiconductor alloys. These projects exploited the linear and nonlinear optical properties that depend most strongly on the symmetry reduction of...

  19. Toolkit Professor Brian Odom Northwestern University

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

    Toolbox and Expertise Toolbox and Expertise Superior Energy Performance logo Proven tools, expert guidance, training, and other resources are available that you can use to improve energy management at your facility. The free DOE eGuide provides step-by-step guidance to standup or enhance your energy management system (EnMS). Hire experts to fill gaps or train in-house staff. Contact your utility and consider becoming a Better Plant Partner to gain additional assistance. Tools Hire an Expert

  20. Brian K. Radak | Argonne Leadership Computing Facility

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

    K. Radak Postdoctoral Appointee Argonne National Laboratory 9700 S. Cass Avenue Building 240 - Wkstn. 1D16 Argonne, IL 60439 630-252-8643 bradak@anl...

  1. Analysis of turbulent transport and mixing in transitional Rayleigh/Taylor unstable flow using direct numerical simulation data

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Schilling, Oleg; Mueschke, Nicholas J.

    2010-10-18

    Data from a 1152X760X1280 direct numerical simulation (DNS) of a transitional Rayleigh-Taylor mixing layer modeled after a small Atwood number water channel experiment is used to comprehensively investigate the structure of mean and turbulent transport and mixing. The simulation had physical parameters and initial conditions approximating those in the experiment. The budgets of the mean vertical momentum, heavy-fluid mass fraction, turbulent kinetic energy, turbulent kinetic energy dissipation rate, heavy-fluid mass fraction variance, and heavy-fluid mass fraction variance dissipation rate equations are constructed using Reynolds averaging applied to the DNS data. The relative importance of mean and turbulent production, turbulent dissipationmoreand destruction, and turbulent transport are investigated as a function of Reynolds number and across the mixing layer to provide insight into the flow dynamics not presently available from experiments. The analysis of the budgets supports the assumption for small Atwood number, Rayleigh/Taylor driven flows that the principal transport mechanisms are buoyancy production, turbulent production, turbulent dissipation, and turbulent diffusion (shear and mean field production are negligible). As the Reynolds number increases, the turbulent production in the turbulent kinetic energy dissipation rate equation becomes the dominant production term, while the buoyancy production plateaus. Distinctions between momentum and scalar transport are also noted, where the turbulent kinetic energy and its dissipation rate both grow in time and are peaked near the center plane of the mixing layer, while the heavy-fluid mass fraction variance and its dissipation rate initially grow and then begin to decrease as mixing progresses and reduces density fluctuations. All terms in the transport equations generally grow or decay, with no qualitative change in their profile, except for the pressure flux contribution to the total turbulent kinetic

  2. Test Problem: Tilted Rayleigh-Taylor for 2-D Mixing Studies

    SciTech Connect (OSTI)

    Andrews, Malcolm J.; Livescu, Daniel; Youngs, David L.

    2012-08-14

    The 'tilted-rig' test problem originates from a series of experiments (Smeeton & Youngs, 1987, Youngs, 1989) performed at AWE in the late 1980's, that followed from the 'rocket-rig' experiments (Burrows et al., 1984; Read & Youngs, 1983), and exploratory experiments performed at Imperial College (Andrews, 1986; Andrews and Spalding, 1990). A schematic of the experiment is shown in Figure 1, and comprises a tank filled with light fluid above heavy, and then 'tilted' on one side of the apparatus, thus causing an 'angled interface' to the acceleration history due to rockets. Details of the configuration given in the next chapter include: fluids, dimensions, and other necessary details to simulate the experiment. Figure 2 shows results from two experiments, Case 110 (which is the source for this test problem) that has an Atwood number of 0.5, and Case 115 (a secondary source described in Appendix B), with Atwood of 0.9 Inspection of the photograph in Figure 2 (the main experimental diagnostic) for Case 110. reveals two main areas for mix development; 1) a large-scale overturning motion that produces a rising plume (spike) on the left, and falling plume (bubble) on the right, that are almost symmetric; and 2) a Rayleigh-Taylor driven mixing central mixing region that has a large-scale rotation associated with the rising and falling plumes, and also experiences lateral strain due to stretching of the interface by the plumes, and shear across the interface due to upper fluid moving downward and to the right, and lower fluid moving upward and to the left. Case 115 is similar but differs by a much larger Atwood of 0.9 that drives a strong asymmetry between a left side heavy spike penetration and a right side light bubble penetration. Case 110 is chosen as the source for the present test problem as the fluids have low surface tension (unlike Case 115) due the addition of a surfactant, the asymmetry small (no need to have fine grids for the spike), and there is extensive

  3. Temporal evolution of surface ripples on a finite plasma slab subject to the magneto-Rayleigh-Taylor instability

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Weis, Matthew Robert; Zhang, Peng; Lau, Yue Ying; Rittersdorf, Ian; Zier, Jacob; Gilgenbach, Ronald; Mark Harry Hess; Peterson, Kyle J.

    2014-12-17

    Using the ideal magnetohydrodynamic model, we calculate the temporal evolution of initial ripples on the boundaries of a planar plasma slab that is subjected to the magneto-Rayleigh-Taylor instability. The plasma slab consists of three regions. We assume that in each region the plasma density is constant with an arbitrary value and the magnetic field is also constant with an arbitrary magnitude and an arbitrary direction parallel to the interfaces. Then, the instability may be driven by a combination of magnetic pressure and kinetic pressure. Thus the general dispersion relation is derived, together with the feedthrough factor between the two interfaces.more » The temporal evolution is constructed from the superposition of the eigenmodes. Those previously established results are recovered in the various limits. Numerical examples are given on the temporal evolution of ripples on the interfaces of the finite plasma slab.« less

  4. TWO-DIMENSIONAL NUMERICAL STUDY FOR RAYLEIGH-TAYLOR AND RICHTMYER-MESHKOV INSTABILITIES IN RELATIVISTIC JETS

    SciTech Connect (OSTI)

    Matsumoto, Jin; Masada, Youhei

    2013-07-20

    We study the stability of a non-rotating single-component jet using two-dimensional special relativistic hydrodynamic simulations. By assuming translational invariance along the jet axis, we exclude the destabilization effect by Kelvin-Helmholtz mode. The nonlinear evolution of the transverse structure of the jet with a normal jet velocity is highlighted. An intriguing finding in our study is that Rayleigh-Taylor and Richtmyer-Meshkov type instabilities can destroy cylindrical jet configuration as a result of spontaneously induced radial oscillating motion. This is powered by in situ energy conversion between the thermal and bulk kinetic energies. The effective inertia ratio of the jet to the surrounding medium {eta} determines a threshold for the onset of instabilities. The condition {eta} < 1 should be satisfied for the transverse structure of the jet being persisted.

  5. Temporal evolution of surface ripples on a finite plasma slab subject to the magneto-Rayleigh-Taylor instability

    SciTech Connect (OSTI)

    Weis, Matthew Robert; Zhang, Peng; Lau, Yue Ying; Rittersdorf, Ian; Zier, Jacob; Gilgenbach, Ronald; Mark Harry Hess; Peterson, Kyle J.

    2014-12-17

    Using the ideal magnetohydrodynamic model, we calculate the temporal evolution of initial ripples on the boundaries of a planar plasma slab that is subjected to the magneto-Rayleigh-Taylor instability. The plasma slab consists of three regions. We assume that in each region the plasma density is constant with an arbitrary value and the magnetic field is also constant with an arbitrary magnitude and an arbitrary direction parallel to the interfaces. Then, the instability may be driven by a combination of magnetic pressure and kinetic pressure. Thus the general dispersion relation is derived, together with the feedthrough factor between the two interfaces. The temporal evolution is constructed from the superposition of the eigenmodes. Those previously established results are recovered in the various limits. Numerical examples are given on the temporal evolution of ripples on the interfaces of the finite plasma slab.

  6. Analysis of turbulent transport and mixing in transitional Rayleigh–Taylor unstable flow using direct numerical simulation data

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Schilling, Oleg; Mueschke, Nicholas J.

    2010-10-18

    Data from a 1152X760X1280 direct numerical simulation (DNS) of a transitional Rayleigh-Taylor mixing layer modeled after a small Atwood number water channel experiment is used to comprehensively investigate the structure of mean and turbulent transport and mixing. The simulation had physical parameters and initial conditions approximating those in the experiment. The budgets of the mean vertical momentum, heavy-fluid mass fraction, turbulent kinetic energy, turbulent kinetic energy dissipation rate, heavy-fluid mass fraction variance, and heavy-fluid mass fraction variance dissipation rate equations are constructed using Reynolds averaging applied to the DNS data. The relative importance of mean and turbulent production, turbulent dissipationmore » and destruction, and turbulent transport are investigated as a function of Reynolds number and across the mixing layer to provide insight into the flow dynamics not presently available from experiments. The analysis of the budgets supports the assumption for small Atwood number, Rayleigh/Taylor driven flows that the principal transport mechanisms are buoyancy production, turbulent production, turbulent dissipation, and turbulent diffusion (shear and mean field production are negligible). As the Reynolds number increases, the turbulent production in the turbulent kinetic energy dissipation rate equation becomes the dominant production term, while the buoyancy production plateaus. Distinctions between momentum and scalar transport are also noted, where the turbulent kinetic energy and its dissipation rate both grow in time and are peaked near the center plane of the mixing layer, while the heavy-fluid mass fraction variance and its dissipation rate initially grow and then begin to decrease as mixing progresses and reduces density fluctuations. All terms in the transport equations generally grow or decay, with no qualitative change in their profile, except for the pressure flux contribution to the total turbulent kinetic

  7. RAYLEIGH-TAYLOR TYPE INSTABILITIES IN THE RECONNECTION EXHAUST JET AS A MECHANISM FOR SUPRA-ARCADE DOWNFLOWS IN THE SUN

    SciTech Connect (OSTI)

    Guo, L.-J.; Huang, Y.-M.; Bhattacharjee, A.; Innes, D. E. E-mail: amitava@princeton.edu E-mail: innes@mps.mpg.de

    2014-12-01

    Supra-arcade downflows (hereafter referred to as SADs) are low-emission, elongated, finger-like features observed in active region coronae above post-eruption flare arcades. Observations exhibit downward moving SADs intertwined with bright upward growing spikes. Whereas SADs are dark voids, spikes are brighter, denser structures. Although SADs have been observed for more than a decade, the mechanism of the formation of SADs remains an open issue. Using three-dimensional resistive magnetohydrodynamic simulations, we demonstrate that Rayleigh-Taylor-type instabilities develop in the downstream region of a reconnecting current sheet. The instabilities result in the formation of low-density coherent structures that resemble SADs, and high-density structures that appear to be spike-like. Comparison between the simulation results and observations suggests that Rayleigh-Taylor-type instabilities in the exhaust of reconnecting current sheets provide a plausible mechanism for observed SADs.

  8. Bell-Plesset effects in Rayleigh-Taylor instability of finite-thickness spherical and cylindrical shells

    SciTech Connect (OSTI)

    Velikovich, A. L.; Schmit, P. F.

    2015-12-28

    Bell-Plesset (BP) effects account for the influence of global convergence or divergence of the fluid flow on the evolution of the interfacial perturbations embedded in the flow. The development of the Rayleigh-Taylor instability in radiation-driven spherical capsules and magnetically-driven cylindrical liners necessarily includes a significant contribution from BP effects due to the time dependence of the radius, velocity, and acceleration of the unstable surfaces or interfaces. An analytical model is presented that, for an ideal incompressible fluid and small perturbation amplitudes, exactly evaluates the BP effects in finite-thickness shells through acceleration and deceleration phases. The time-dependent dispersion equations determining the “instantaneous growth rate” are derived. It is demonstrated that by integrating this approximate growth rate over time, one can accurately evaluate the number of perturbation e-foldings during the inward acceleration phase of the implosion. As a result, in the limit of small shell thickness, exact thin-shell perturbationequations and approximate thin-shell dispersion equations are obtained, generalizing the earlier results [E. G. Harris, Phys. Fluids 5, 1057 (1962); E. Ott, Phys. Rev. Lett. 29, 1429 (1972); A. B. Bud'ko et al., Phys. Fluids B 2, 1159 (1990)].

  9. Bell-Plesset effects in Rayleigh-Taylor instability of finite-thickness spherical and cylindrical shells

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Velikovich, A. L.; Schmit, P. F.

    2015-12-28

    Bell-Plesset (BP) effects account for the influence of global convergence or divergence of the fluid flow on the evolution of the interfacial perturbations embedded in the flow. The development of the Rayleigh-Taylor instability in radiation-driven spherical capsules and magnetically-driven cylindrical liners necessarily includes a significant contribution from BP effects due to the time dependence of the radius, velocity, and acceleration of the unstable surfaces or interfaces. An analytical model is presented that, for an ideal incompressible fluid and small perturbation amplitudes, exactly evaluates the BP effects in finite-thickness shells through acceleration and deceleration phases. The time-dependent dispersion equations determining themore » “instantaneous growth rate” are derived. It is demonstrated that by integrating this approximate growth rate over time, one can accurately evaluate the number of perturbation e-foldings during the inward acceleration phase of the implosion. As a result, in the limit of small shell thickness, exact thin-shell perturbationequations and approximate thin-shell dispersion equations are obtained, generalizing the earlier results [E. G. Harris, Phys. Fluids 5, 1057 (1962); E. Ott, Phys. Rev. Lett. 29, 1429 (1972); A. B. Bud'ko et al., Phys. Fluids B 2, 1159 (1990)].« less

  10. Distributed modeling of ablation (1996–2011) and climate sensitivity on the glaciers of Taylor Valley, Antarctica

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hoffman, Matthew J.; Fountain, Andrew G.; Liston, Glen E.

    2016-02-24

    Here, the McMurdo Dry Valleys of Antarctica host the coldest and driest ecosystem on Earth, which is acutely sensitive to the availability of water coming from glacial runoff. We modeled the spatial variability in ablation and assessed climate sensitivity of the glacier ablation zones using 16 years of meteorological and surface mass-balance observations collected in Taylor Valley. Sublimation was the primary form of mass loss over much of the ablation zones, except for near the termini where melt, primarily below the surface, dominated. Microclimates in ~10 m scale topographic basins generated melt rates up to ten times higher than overmore » smooth glacier surfaces. In contrast, the vertical terminal cliffs on the glaciers can have higher or lower melt rates than the horizontal surfaces due to differences in incoming solar radiation. The model systematically underpredicted ablation for the final 5 years studied, possibly due to an increase of windblown sediment. Surface mass-balance sensitivity to temperature was ~–0.02 m w.e. K–1, which is among the smallest magnitudes observed globally. We also identified a high sensitivity to ice albedo, with a decrease of 0.02 having similar effects as a 1 K increase in temperature, and a complex sensitivity to wind speed.« less

  11. Effects of initial radius of the interface and Atwood number on nonlinear saturation amplitudes in cylindrical Rayleigh-Taylor instability

    SciTech Connect (OSTI)

    Liu, Wanhai; Yu, Changping; Li, Xinliang

    2014-11-15

    Nonlinear saturation amplitudes (NSAs) of the first two harmonics in classical Rayleigh-Taylor instability (RTI) in cylindrical geometry for arbitrary Atwood numbers have been analytically investigated considering nonlinear corrections up to the fourth-order. The NSA of the fundamental mode is defined as the linear (purely exponential) growth amplitude of the fundamental mode at the saturation time when the growth of the fundamental mode (first harmonic) is reduced by 10% in comparison to its corresponding linear growth, and the NSA of the second harmonic can be obtained in the same way. The analytic results indicate that the effects of the initial radius of the interface (r{sub 0}) and the Atwood number (A) play an important role in the NSAs of the first two harmonics in cylindrical RTI. On the one hand, the NSA of the fundamental mode first increases slightly and then decreases quickly with increasing A. For given A, the smaller the r{sub 0}/λ (with λ perturbation wavelength) is, the larger the NSA of the fundamental mode is. When r{sub 0}/λ is large enough (r{sub 0}≫λ), the NSA of the fundamental mode is reduced to the prediction of previous literatures within the framework of third-order perturbation theory [J. W. Jacobs and I. Catton, J. Fluid Mech. 187, 329 (1988); S. W. Haan, Phys. Fluids B 3, 2349 (1991)]. On the other hand, the NSA of the second harmonic first decreases quickly with increasing A, reaching a minimum, and then increases slowly. Furthermore, the r{sub 0} can reduce the NSA of the second harmonic for arbitrary A at r{sub 0}≲2λ while increase it for A ≲ 0.6 at r{sub 0}≳2λ. Thus, it should be included in applications where the NSA has a role, such as inertial confinement fusion ignition target design.

  12. Taylor-NERP.indd

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

    Environmental Research Park Program United States Department of Energy 2005 SRO-NERP-28 by: Adrienne E. ... microcrustacean communities of any temporary ponds in the world. ...

  13. Taylor_1971.pdf

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

  14. Probing the deep nonlinear stage of the ablative Rayleigh-Taylor instability in indirect drive experiments on the National Ignition Facility

    SciTech Connect (OSTI)

    Casner, A. Masse, L.; Liberatore, S.; Loiseau, P.; Masson-Laborde, P. E.; Jacquet, L.; Martinez, D.; Moore, A. S.; Seugling, R.; Felker, S.; Haan, S. W.; Remington, B. A.; Smalyuk, V. A.; Farrell, M.; Giraldez, E.; Nikroo, A.

    2015-05-15

    Academic tests in physical regimes not encountered in Inertial Confinement Fusion will help to build a better understanding of hydrodynamic instabilities and constitute the scientifically grounded validation complementary to fully integrated experiments. Under the National Ignition Facility (NIF) Discovery Science program, recent indirect drive experiments have been carried out to study the ablative Rayleigh-Taylor Instability (RTI) in transition from weakly nonlinear to highly nonlinear regime [A. Casner et al., Phys. Plasmas 19, 082708 (2012)]. In these experiments, a modulated package is accelerated by a 175 eV radiative temperature plateau created by a room temperature gas-filled platform irradiated by 60 NIF laser beams. The unique capabilities of the NIF are harnessed to accelerate this planar sample over much larger distances (≃1.4 mm) and longer time periods (≃12 ns) than previously achieved. This extended acceleration could eventually allow entering into a turbulent-like regime not precluded by the theory for the RTI at the ablation front. Simultaneous measurements of the foil trajectory and the subsequent RTI growth are performed and compared with radiative hydrodynamics simulations. We present RTI growth measurements for two-dimensional single-mode and broadband multimode modulations. The dependence of RTI growth on initial conditions and ablative stabilization is emphasized, and we demonstrate for the first time in indirect-drive a bubble-competition, bubble-merger regime for the RTI at ablation front.

  15. QB1 - Stochastic Gene Regulation Munsky, Brian [Los Alamos National

    Office of Scientific and Technical Information (OSTI)

    FACILITIES; FLUCTUATIONS; GENE REGULATION; KINETICS; QUANTIZATION; SIMULATION; SWITCHES Summaries of this presentation are: (1) Stochastic fluctuations or 'noise' is present...

  16. Brian Watson | Center for Bio-Inspired Solar Fuel Production

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

    Principal Investigators Postdoctoral Fellows Center researchers Graduate Students Undergraduate Students All Bisfuel Center Personnel Alex Volosin Anindya Roy Antaeres' ...

  17. PPPL physicist Brian Grierson wins DOE Early Career Research...

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

    wins DOE Early Career Research Program grant By John Greenwald May 13, 2014 Tweet ... The five-year grant will total some 2.5 million and fund exploration of the mechanisms ...

  18. Initial Assessment of Alternate Metals in Chalcogels Riley, Brian...

    Office of Scientific and Technical Information (OSTI)

    based chemistries available in the literature for making non-oxide, chalcogen-based aerogels, called chalcogels. In each case, a combination of multiple precursors is required to...

  19. Reference Model #1 - Tidal Energy: Resource Dr. Brian Polagye

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

    ... This also reduces ensemble Doppler noise (n ensemble ) by a factor of N 12 relative the ... Terray, E.A. Performance of a Broad-Band Acoustic Doppler Current Profiler, IEEE Journal ...

  20. Scott Taylor, ALS Safety Manager

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

    Security Administration | (NNSA) Scott Samuelson receives NNSA's Gold Medal of Excellence Thursday, November 20, 2014 - 2:22pm Bob Raines, NNSA Associate Administrator for Acquisition and Project Management (APM), recently presented the Gold Medal of Excellence to Scott Samuelson, Senior Advisor for APM. The medal is the highest honorary award granted by NNSA and was presented to Samuelson in recognition to his dedication and commitment to NNSA. Samuelson will retire at the end of November

  1. NREL: Energy Analysis - Taylor Curtis

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

    Areas of expertise Environmental laws, policy, and regulation Energy and transmission laws, policy, and regulation Distributed energy resource regulation Legal and regulatory ...

  2. Taylor Instability of Incompressible Liquids

    DOE R&D Accomplishments [OSTI]

    Fermi, E.; von Neumann, J.

    1955-11-01

    A discussion is presented in simplified form of the problem of the growth of an initial ripple on the surface of an incompressible liquid in the presence of an acceleration, g, directed from the outside into the liquid. The model is that of a heavy liquid occupying at t = 0 the half space above the plane z = 0, and a rectangular wave profile is assumed. The theory is found to represent correctly one feature of experimental results, namely the fact that the half wave of the heavy liquid into the vacuum becomes rapidly narrower while the half wave pushing into the heavy liquid becomes more and more blunt. The theory fails to account for the experimental results according to which the front of the wave pushing into the heavy liquid moves with constant velocity. The case of instability at the boundary of 2 fluids of different densities is also explored. Similar results are obtained except that the acceleration of the heavy liquid into the light liquid is reduced.

  3. Effects of laser energy fluence on the onset and growth of the Rayleigh-Taylor instabilities and its influence on the topography of the Fe thin film grown in pulsed laser deposition facility

    SciTech Connect (OSTI)

    Mahmood, S. [National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616 (Singapore); Department of Physics, University of Karachi, Karachi 75270 (Pakistan); Rawat, R. S.; Wang, Y.; Lee, S.; Tan, T. L.; Springham, S. V.; Lee, P. [National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616 (Singapore); Zakaullah, M. [Department of Physics, Quaid-i-Azam University, 45320 Islamabad (Pakistan)

    2012-10-15

    The effect of laser energy fluence on the onset and growth of Rayleigh-Taylor (RT) instabilities in laser induced Fe plasma is investigated using time-resolved fast gated imaging. The snow plow and shock wave models are fitted to the experimental results and used to estimate the ablation parameters and the density of gas atoms that interact with the ablated species. It is observed that RT instability develops during the interface deceleration stage and grows for a considerable time for higher laser energy fluence. The effects of RT instabilities formation on the surface topography of the Fe thin films grown in pulsed laser deposition system are investigated (i) using different laser energy fluences for the same wavelength of laser radiation and (ii) using different laser wavelengths keeping the energy fluence fixed. It is concluded that the deposition achieved under turbulent condition leads to less smooth deposition surfaces with bigger sized particle agglomerates or network.

  4. Taylor Electric Coop Inc | Open Energy Information

    Open Energy Info (EERE)

    Number: (325) 793-8500 Website: www.taylorelectric.com Twitter: @taylorelectric Facebook: https:www.facebook.comtaylorelectriccooperative Outage Hotline: (325) 793-8500...

  5. Susan M. Taylor | Department of Energy

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

    founded as Essence CARES. The National CARES mission is to help end inter-generational poverty by securing and transforming the lives of under-resourced Black children. National...

  6. Alvin A. Taylor Director Robert D. Perry

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

    September 27, 2013 Julie A. Smith Office of Electricity Delivery and Energy ... Smith, DNR is the state agency charged by state law with the management, protection, and ...

  7. Microsoft PowerPoint - Advances_Taylor

    Office of Environmental Management (EM)

    Minnesota WHAT is TRANSCOM? * Unclassified web-based tracking and communication system * ... to users with a need to know * Encrypted web application * Compatible on most ...

  8. Brian A. Hitson, Director | OSTI, US Dept of Energy Office of...

    Office of Scientific and Technical Information (OSTI)

    leading to the 2011 launch of ScienceCinema, a unique speech-indexed search engine for DOE and CERN scientific video collections. In managing OSTI's international activities, Mr. ...

  9. FIA-13-0047 - In the Matter of Brian Simmons | Department of...

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

    July 17, 2013, the Office of Hearings and Appeals (OHA) issued a decision denying a consolidated appeal (Appeal) from a Freedom of Information Act (FOIA) determination issued by ...

  10. Brian Wiers | Center for Gas SeparationsRelevant to Clean Energy...

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

    possible ways to produce thin films of metal-organic frameworks as well as template the ... of Hexane Isomers in a Metal-Organic Framework with Triangular Channels, Science, ...

  11. Microsoft PowerPoint - Reporting Small Quantities to NMMSS_Brian...

    National Nuclear Security Administration (NNSA)

    * kg Uranium * kg U-235 - Natural Uranium * kg Uranium * No U-235 reported - Thorium * kg Thorium * No isotope reported 4 NUREGBR-0006: If the quantity is equal to or greater ...

  12. Microsoft PowerPoint - 1_BRIAN_HORN_NMMSS Overrview-May 12 2014...

    National Nuclear Security Administration (NNSA)

    enriched uranium - Uranium in cascade - Thorium - U-233 -Lithium-6 - Plutonium - Pu-238 ... enriched uranium - Uranium in cascade - Thorium - U-233 - Plutonium - Pu-238 Reporting ...

  13. Microsoft PowerPoint - 3_Gary and Brian_Wednesday 5-22 Transit...

    National Nuclear Security Administration (NNSA)

    France Germany Italy Japan Kazakhstan Mexico Netherlands China Russia Spain United Kingdom Sweden 5 Natural Uranium Imports ...

  14. Subject: Proposed 216(h) Regulations To: Brian.Mills@hq.doe...

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

    that each can properly respond to requests for additional information, forecast the likelihood of project approval in a realistic manner, and identify potential relevant issues. ...

  15. OSTIblog Posts by Brian Hitson | OSTI, US Dept of Energy, Office...

    Office of Scientific and Technical Information (OSTI)

    On October 1, we issued the OSTI 2015-2019 Strategic Plan, a roadmap for working to ensure its collections and portals reflect the complete R&D output of DOE. Read more... Watch ...

  16. Microsoft PowerPoint - 12_BRIAN_HORN_NRC and DOE recognition...

    National Nuclear Security Administration (NNSA)

    20 days after starting, and reconciled the same day as received at NMMSS Global Laser enrichment and Paducah (SYS) -each submitted inventory less than 52 days after ...

  17. Microsoft PowerPoint - Closing Summary_Brian Horn_Pete Dessaules...

    National Nuclear Security Administration (NNSA)

    Challenge Exam 4 Summary (Cont'd) Report from the Reactor Subgroup - Discuss NMMSS issues identified by Louis Carlson on Monday May 11 - Subgroup plans to contact power reactor ...

  18. OSTIblog Posts by Brian Hitson | OSTI, US Dept of Energy Office...

    Office of Scientific and Technical Information (OSTI)

    DOE OSTI Implements Re-organization: Sticking to Our Knitting While Meeting New Challenges ... including a new obligation to provide public access to DOE-affiliated journal articles. ...

  19. Microsoft PowerPoint - 5_Brian and Pete_Year In ReviewNMMSS2013...

    National Nuclear Security Administration (NNSA)

    (NNSA) Office of Materials Integration within the U.S. Department of Energy * ... separation of NMMSS oversight 1979 International data backfit began after passage of ...

  20. L2:VUQ.P2.03 Brian Adams SNL

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

    -a 1 VUQ: Achieving Credible, Science-Based Predictions Milestone VUQ.Y1.03 (Enable SA/UQ Demonstrations in VERA) * Strategy: Integrate SNL's DAKOTA UQ Toolkit with Westinghouse's VIPRE-W subchannel T/H simulator * Demonstration for CRUD/CIPS problem (quarter-core geometry): Assess influence of core operating parameters on mass evaporation rate * Results: Affirmed well-known sensitivity to temperature and exposed sensitivity to pressure. Boiling model parameters may dominate UQ if not

  1. Microsoft PowerPoint - 1_Pete_Deessaules_Brain_Horn_NMMSS_2014_screensaver.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Welcome Pete Dessaules, NNSA Brian Horn, NRC

  2. Microsoft Word - Materials Innovation for Next Gen TandD Grid Components Workshop Proceedings Draft 10-29-15 FINAL

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

    15 Materials Innovation for Next-Generation T&D Grid Components: Workshop Summary Report Emmanuel Taylor, Caroline Kramer, Brian Marchionini and Ridah Sabouni, Energetics Incorporated Kerry Cheung, U.S. Department of Energy and Dominic F. Lee, Oak Ridge National Laboratory October 2015 Approved for public release: Distribution is unlimited DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via US Department of Energy (DOE) SciTech Connect. Website

  3. Synthesis and electrochemical performance of high-capacity 0.34Li{sub 2}MnO{sub 3}0.66LiMn{sub 0.63}Ni{sub 0.24}Co{sub 0.13}O{sub 2} cathode materials using a CouetteTaylor reactor

    SciTech Connect (OSTI)

    Choi, Mansoo; Kim, Hyun-Soo; Kim, Jik-Soo; Park, Suk-Joon; Lee, Young Moo; Jin, Bong-Soo

    2014-10-15

    Highlights: The cathode material synthesized by co-precipitation using a CouetteTaylor reactor. The first and second discharge capacities were measured to be 311 and 307 mA h g{sup ?1}. The material has an excellent rate capability. - Abstract: The 0.34Li{sub 2}MnO{sub 3}0.66LiMn{sub 0.63}Ni{sub 0.24}Co{sub 0.13}O{sub 2} cathode material for the Li-ion battery is synthesized by co-precipitation using a CouetteTaylor reactor. Particle size analysis (PSA) and a field emission-scanning electron microscopy (FE-SEM) images show that the obtained precursor and cathode material exhibit a narrow particle size distribution and spherical shape. The structure and composition of the 0.34Li{sub 2}MnO{sub 3}0.66LiMn{sub 0.63}Ni{sub 0.24}Co{sub 0.13}O{sub 2} are confirmed by X-ray diffraction (XRD) and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The first and second discharge capacities of 0.34Li{sub 2}MnO{sub 3}0.66LiMn{sub 0.63}Ni{sub 0.24}Co{sub 0.13}O{sub 2} are measured to be 311 and 307 mA h g{sup ?1}, respectively. The material also has an excellent rate capability (250 and 180 mA h g{sup ?1} at 1 C and 5 C, respectively). In the rate capability test at 60 C, 0.34Li{sub 2}MnO{sub 3}0.66LiMn{sub 0.63}Ni{sub 0.24}Co{sub 0.13}O{sub 2} has a higher capacity of over 210 mA h g{sup ?1} in the range 0.110 C. In the cyclic performance test, the capacity retention at high temperature is over 85% after 50 cycles, which is similar to that at room temperature. The 0.34Li{sub 2}MnO{sub 3}0.66LiMn{sub 0.63}Ni{sub 0.24}Co{sub 0.13}O{sub 2} is therefore a high-capacity material with potential for use as an electrode in Li-ion batteries.

  4. Taylor County, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    lse,"poi":true,"imageoverlays":,"markercluster":false,"searchmarkers":"","locations":"text":"","title":"","link":null,"lat":32.2455088,"lon":-99.8124935,"alt":0,"address":"","i...

  5. Women @ Energy: J'Tia Taylor | Department of Energy

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

    ... Women @ Energy: Christine Ader Sandra Begay-Campbell is a Principal Member of the ... tribes with their renewable energy developments. Women @ Energy: Sandra Begay-Campbell

  6. The application of taylor weighting, digital phase shifters,...

    Office of Scientific and Technical Information (OSTI)

    Language: English Subject: 47 OTHER INSTRUMENTATION; ANTENNAS; APERTURES; DESIGN; PERFORMANCE; RADAR; DATA TRANSMISSION Phased array antennas.; Array processors.; Antennas.-Testing...

  7. ARM_AVP_SHIS_Taylor_Turner_pdf.ppt

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

    each with significantly different instrument operating environments. * The S-HIS was initially designed to fly on an unmanned aircraft vehicle (UAV) with limited payload capacity. ...

  8. Mercedes Taylor | Center for Gas SeparationsRelevant to Clean...

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

    My work focuses on the design and synthesis of metal-organic frameworks that exhibit ... of the organic linkers of the framework to control the overall framework ...

  9. Slavnov-Taylor identities for primordial perturbations (Journal...

    Office of Scientific and Technical Information (OSTI)

    Publication Date: 2014-02-01 OSTI Identifier: 22369781 Resource Type: Journal Article Resource Relation: Journal Name: Journal of Cosmology and Astroparticle Physics; Journal ...

  10. Tribal Energy Program 2009 Annual Review - Roger Taylor

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

    Grid Integration Demand Side Transportation Fuels Utilization Buildings Energy Technology Cross Cutting Basic Energy Science Strategic Energy Analysis International Programs ...

  11. Plasmoid solutions of the HahmKulsrudTaylor equilibrium model

    SciTech Connect (OSTI)

    Dewar, R. L. [Plasma Research Laboratory, Research School of Physics and Engineering, The Australian National University, Canberra ACT 0200, Australia and Graduate School of Frontier Sciences, University of Tokyo, Kashiwa, Chiba 277-8561 (Japan)] [Plasma Research Laboratory, Research School of Physics and Engineering, The Australian National University, Canberra ACT 0200, Australia and Graduate School of Frontier Sciences, University of Tokyo, Kashiwa, Chiba 277-8561 (Japan); Bhattacharjee, A.; Kulsrud, R. M. [Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543 (United States)] [Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543 (United States); Wright, A. M. [The Australian National University, Canberra ACT 0200 (Australia)] [The Australian National University, Canberra ACT 0200 (Australia)

    2013-08-15

    The HahmKulsrud (HK) [T. S. Hahm and R. M. Kulsrud, Phys. Fluids 28, 2412 (1985)] solutions for a magnetically sheared plasma slab driven by a resonant periodic boundary perturbation illustrate fully shielded (current sheet) and fully reconnected (magnetic island) responses. On the global scale, reconnection involves solving a magnetohydrodynamic (MHD) equilibrium problem. In systems with a continuous symmetry, such MHD equilibria are typically found by solving the GradShafranov equation, and in slab geometry the elliptic operator in this equation is the 2-D Laplacian. Thus, assuming appropriate pressure and poloidal current profiles, a conformal mapping method can be used to transform one solution into another with different boundary conditions, giving a continuous sequence of solutions in the form of partially reconnected magnetic islands (plasmoids) separated by Syrovatsky current sheets. The two HK solutions appear as special cases.

  12. SBOT NEW MEXICO CARLSBAD FIELD OFFICE POC Roland Taylor Telephone

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

    ... Types) Manufacturing 333512 Pump and Pumping Equipment Manufacturing 333911 Air and ... Types) Manufacturing 333512 Pump and Pumping Equipment Manufacturing 333911 Air and ...

  13. SREL Reprint #3129

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

    9 Outer Membrane-Associated Serine Protease Involved in Adhesion of Shewanella oneidensis to Fe(III) Oxides Justin L. Burns1, Brian R. Ginn1, David J. Bates1, Steven N. Dublin2, Jeanette V. Taylor2, Robert P. Apkarian2, Samary Amaro-Garcia3, Andrew L. Neal3, and Thomas J. Dichristina1 1School of Biology, Georgia Institute of Technology, Atlanta, GA 30332 2Robert P. Apkarian Integrated Electron Microscopy Core Facility, Emory University, Atlanta, GA 30322 3Savannah River Ecology Laboratory, The

  14. Texas Commission on Environmental Quality | Open Energy Information

    Open Energy Info (EERE)

    Pollution Contact Contacts.png Yvonne Miramontes 512.239.6922 http:www.tceq.texas.gov Air Quality Permitting Contact - Construction Permitting Contacts.png Michael Wilson...

  15. BPA-2014-01328-FOIA Correspondence

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

    agency about your request. You have requested: All documents, including surveillance videos, pertaining to the accident that occurred on October 8, 2012 as Yvonne Coleman was...

  16. The ABCs of giving-Y-12 donates school supplies to ADFAC | Y...

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

    their giving spirit with those in our communities," Y-12 United Way Chair Yvonne Bishop said. While the event precedes the site's formal United Way campaign kickoff, Bishop...

  17. L3:VUQ V&V P9 02 An Information Theoretic Approach to Use...

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

    Codes Allison Lewis and Ralph Smith North Carolina State University Brian ... Allison Lewis , Ralph Smith , and Brian Williams Introduction Information ...

  18. Presentations | OSTI, US Dept of Energy Office of Scientific...

    Office of Scientific and Technical Information (OSTI)

    Brian Hitson Oct 05, 2012 Brian Hitson's picture WorldWideScience.org Multilingual Search of Chemistry and Other Sciences ACS National Meeting Brian Hitson Aug 22, 2012 Mark ...

  19. Evaluating the necessity of certain gas centrifuge enrichment...

    Office of Scientific and Technical Information (OSTI)

    Authors: Boyer, Brian David 1 ; Erpenbeck, Heather 1 ; Fane, Brian M 1 ; Ianakiev, Kiril D 1 ; Miller, Karen A 1 + Show Author Affiliations Los Alamos National Laboratory ...

  20. Effects of Structural Property Variations on Flutter Stability

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

    Aeroelastic Instability of Very Large Wind Turbine Blades Brian R. Resor, Brian C. Owens ... innovations in technology to improve the performance of utility-scale wind turbine blades. ...

  1. SANDIA REPORT

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

    of Increasing Tip Velocity on Wind Turbine Rotor Design Brian R. Resor, David C. ... of Increasing Tip Velocity on Wind Turbine Rotor Design Brian R. Resor, David C. ...

  2. DE-SC0004670 Final Technical Report Project Title: Two-Way Integration...

    Office of Scientific and Technical Information (OSTI)

    Investigators: Wuyin Lin, Minghua Zhang, Xiangmin Jiao, Brian Colle, Andrew M. ... Publications He, Juanxiong, Minghua Zhang, Wuyin Lin, Brian Colle, Ping Liu, and Andrew M. ...

  3. WindOrgChart_06-27-2015

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

    Administrator Acting Center Director Brian Smith Paul Veers Chief Engineer - Wind Brian Smith Deputy Director Chief Engineer- Water Jochem Weber Windplant Design & Mfg'g. Derek...

  4. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ; Lawrence, Earl ; Habib, Salman ; Williams, Brian Ongoing and future large scale ... Heitmann, Katrin ; Higdon, David ; Williams, Brian J. ; Lawrence, Earl ; White, ...

  5. Low Temperature Projects | Department of Energy

    Energy Savers [EERE]

    to Generate Electricity Using Geothermal Water Resources, Brian Brown, Brian Brown ... Power Demonstration of a Variable Phase Turbine Power System for Low Temperature ...

  6. Smart-Grid Ready PV Inverters with Utility Communication

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

    INTEGRATION Smart-Grid Ready PV Inverters with Utility Communication Electric Power Research Institute Brian Seal, Tom Key, Aminul Huque, Lindsey Rogers Technical Contact Brian ...

  7. Browse by Discipline -- E-print Network Subject Pathways: Geosciences...

    Office of Scientific and Technical Information (OSTI)

    of Chemistry, Korea Advanced Institute of Science and Technology Kirby, Brian J. (Brian J. Kirby) - Sibley School of Mechanical and Aerospace Engineering, Cornell ...

  8. Final Report of the Mid-Atlantic Marine Wildlife Surveys, Modeling...

    Energy Savers [EERE]

    2013 Jocelyn Brown-Saracino 1 , Courtney Smith 2 , and Patrick Gilman 3 New West ... Bigger, Brian Hooker, Tim Jones, Brian Smith, Michael Simpkins, Andrew Gilbert, Jim ...

  9. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Perry, Michael (3) Pilat, Fulvia (3) Raimondi, Pantaleo (3) Smith, Brian (3) Todd, Annika ... Reports Todd, Annika ; Perry, Michael ; Smith, Brian ; Sullivan, Michael ; Cappers, ...

  10. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Perry, Michael (3) Pilat, Fulvia (3) Raimondi, Pantaleo (3) Smith, Brian (3) Todd, Annika ... Programs Todd, Annika ; Perry, Michael ; Smith, Brian ; Sullivan, Michael ; Cappers, ...

  11. Thickness, humidity, and polarization dependent ferroelectric...

    Office of Scientific and Technical Information (OSTI)

    Authors: Neumayer, Sabine M. ; Rodriguez, Brian J., E-mail: brian.rodriguez@ucd.ie 1 ; Conway Institute of Biomolecular and Biomedical Research, University College Dublin, ...

  12. Grid Transformation Workshop

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

    Transmission Metric Discussion by Brian Keel (Salt River Project) Probabilistic Risk Analysis by Tom Burgess (NERC) RISC Recommendation on ERO Priorities by Brian Silverstein...

  13. Summer 2006 Cyclotron Institute REU Program

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

    Yennello at the 2006 CEU. From left to right: Christopher Crane, Brian Newman, Kristen ... Schmitt, Trenton Strong, Christopher Crane, Brian Newman Summer 2006 Student ...

  14. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Lemaster, Michelle Nicole (3) Koplik, Joel (2) Radhakrishnan, Hari (2) Smith, Brian (2) ... Lemaster ; Filippone, Salvatore ; Smith, Brian ; Xu, Xiaofeng Abstract not provided. ...

  15. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Morris, Karla Vanessa (2) Slattengren, Nicole Lemaster (2) Smith, Brian (2) Aprovitola, ... Lemaster ; Filippone, Salvatore ; Smith, Brian ; Xu, Xiaofeng Abstract not provided. ...

  16. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Radhakrishnan, Hari (2) Safta, Cosmin (2) Sargsyan, Khachik (2) Smith, Brian (2) Carson, ... Lemaster ; Filippone, Salvatore ; Smith, Brian ; Xu, Xiaofeng Abstract not provided. ...

  17. Blog Feed: Vehicles | Department of Energy

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

    and Renewable Energy Postdoctoral Research Awards. | Photo courtesy of Dr. Guido Bender, NREL. 10 Questions for a Materials Scientist: Brian Larsen Meet Brian Larsen, who is...

  18. Presentations | OSTI, US Dept of Energy, Office of Scientific...

    Office of Scientific and Technical Information (OSTI)

    Brian Hitson's picture Public Access to DOE Scientific Publications Brian Hitson - ... WorldWideScience.org Multilingual Search of Chemistry and Other Sciences ACS National ...

  19. Microsoft Word - S06401_IC.doc

    Office of Legacy Management (LM)

    ... Ransbottom, Paul Lucas, Tim Fischer, Jeff Smith, Brian Nickel, Joe Crombie, and Art .........33 Figure 55. Jeff Smith and Brian Nickel, OEPA, and Art Kleinrath, ...

  20. Simulating Rayleigh-Taylor (RT) instability using PPM hydrodynamics @scale on Roadrunner (u)

    SciTech Connect (OSTI)

    Woodward, Paul R; Dimonte, Guy; Rockefeller, Gabriel M; Fryer, Christopher L; Dimonte, Guy; Dai, W; Kares, R. J.

    2011-01-05

    The effect of initial conditions on the self-similar growth of the RT instability is investigated using a hydrodynamics code based on the piecewise-parabolic-method (PPM). The PPM code was converted to the hybrid architecture of Roadrunner in order to perform the simulations at extremely high speed and spatial resolution. This paper describes the code conversion to the Cell processor, the scaling studies to 12 CU's on Roadrunner and results on the dependence of the RT growth rate on initial conditions. The relevance of the Roadrunner implementation of this PPM code to other existing and anticipated computer architectures is also discussed.

  1. Jerome I. Friedman, Henry W. Kendall, Richard E. Taylor and the...

    Office of Scientific and Technical Information (OSTI)

    Friedman Confirmed Existence of Quarks Friedman Explains Role of Quarks, in Killian Talk Will Innovation Flourish in the Future? - Opinion by Jerome I. Friedman, American...

  2. HIGH-MODE RAYLEIGH-TAYLOR GROWTH IN NIF IGNITION CAPSULES (Conference...

    Office of Scientific and Technical Information (OSTI)

    Resource Relation: Conference: Presented at: Second International Conference on High Energy Density Physics (ICHED2009), Austin, TX, United States, May 19 - May 22, 2009 Research ...

  3. Theodore B. Taylor, 1965 | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Print Text Size: A A A FeedbackShare Page Weapons: For outstanding contributions to the design of nuclear weapons and for his significant role in the development of the TRIGA ...

  4. Extended theory of the Taylor problem in the plasmoid-unstable regime

    SciTech Connect (OSTI)

    Comisso, L. Grasso, D.; Waelbroeck, F. L.

    2015-04-15

    A fundamental problem of forced magnetic reconnection has been solved taking into account the plasmoid instability of thin reconnecting current sheets. In this problem, the reconnection is driven by a small amplitude boundary perturbation in a tearing-stable slab plasma equilibrium. It is shown that the evolution of the magnetic reconnection process depends on the external source perturbation and the microscopic plasma parameters. Small perturbations lead to a slow nonlinear Rutherford evolution, whereas larger perturbations can lead to either a stable Sweet-Parker-like phase or a plasmoid phase. An expression for the threshold perturbation amplitude required to trigger the plasmoid phase is derived, as well as an analytical expression for the reconnection rate in the plasmoid-dominated regime. Visco-resistive magnetohydrodynamic simulations complement the analytical calculations. The plasmoid formation plays a crucial role in allowing fast reconnection in a magnetohydrodynamical plasma, and the presented results suggest that it may occur and have profound consequences even if the plasma is tearing-stable.

  5. 188795.pdf

    National Nuclear Security Administration (NNSA)

    John Woolery Signature of John Woolery Signature of Steven Erhart Signature of Steven Erhart Signature of Steven Erhart Signature of J. Brian Bidwell Signature of J. Brian Bidwell Signature of J. Brian Bidwell Signature of J. Brian Bidwell Signature of Seb Klein Signature of Seb Klein Signature of Seb Klein Signature of Seb Klein

  6. PNNL: About PNNL - People

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

    Brian Abrahamson Brian Abrahamson, Director and Chief Information Officer Associate Laboratory Director & CIO - Communications and Information Management Pacific Northwest National Laboratory (509) 372-6608 Brian Abrahamson Brian Abrahamson is the Chief Information Officer and the Associate Laboratory Director for Communications and Information Technology at PNNL. In this role, Brian is accountable to the Laboratory Director to continuously improve the deployment, use, management and

  7. Presentations and Publications | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information Presentations OSTI Publications Publications about OSTI Recent Presentations Brian Hitson's picture Office of Scientific and Technical Information DOE PAGES (Beta) Portal Offers Public Access to Scholarly Scientific Publications Resulting from DOE Research Funding Brian Hitson Jun 17, 2015 Brian Hitson's picture Public Access to DOE Scientific Publications Brian Hitson Jun 16, 2014 Brian Hitson's picture Improving Access to U.S Department of Energy

  8. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Filter by Author Brown, Ron (1) Chang, Ni-Bin (1) Davila, Eric (1) Dyson, Brian (1) Save ... facility in a fast-growing urban setting Chang, Ni-Bin ; Davila, Eric ; Dyson, Brian ; ...

  9. Practical issues associated with implementing an advanced safeguards...

    Office of Scientific and Technical Information (OSTI)

    Authors: Erpenbeck, Heather H 1 ; Boyer, Brian D 1 ; Fane, Brian M 1 ; Ianakiev, Kiril D 1 ; Miller, Karen A 1 ; Ward, Steven L 1 + Show Author Affiliations Los Alamos ...

  10. Data analysis and conclusions from the SMART Rotor project, a...

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

    SMART Wind Turbine Rotor: Design and Field Test Jonathan C. Berg, Brian R. Resor, Joshua ... SMART Wind Turbine Rotor: Design and Field Test Jonathan C. Berg, Brian R. Resor, Joshua ...

  11. Search for: All records | DOE Patents

    Office of Scientific and Technical Information (OSTI)

    Gooding, Thomas M (2) Heidelberger, Philip (2) Smith, Brian E (2) Archer, Charles J (1) Blocksome, Michael A (1) Davis, Kristan D (1) Smith, Brian E. (1) Save Results Excel (limit ...

  12. AFV CoverSheet

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

    observed by the Van Allen Probes Sarno-Smith, Lois K Larsen, Brian Arthur Skoug, Ruth ... occurrence and intensity Lois K. Sarno-Smith1, Brian A. Larsen2, Ruth M. Skoug2, ...

  13. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Web-based Visual Analytics for Extreme Scale Climate Science Steed, Chad A ; Evans, Katherine J ; Harney, John F ; Jewell, Brian C ; Shipman, Galen M ; Smith, Brian E ; Thornton, ...

  14. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    O'Shea, Brian W. (2) Oishi, Jeffrey S. (2) Smith, Britton D. (2) Bordner, James (1) Bryan, ... Skillman, Samuel W. ; O'Shea, Brian W. ; Smith, Britton D., E-mail: stephen.skory@colorad...

  15. ORSSAB Meeting - January 2016 | Department of Energy

    Office of Environmental Management (EM)

    minutes and materials. Waste Managment - Brian DeMonia, Bill McMillan, and Brian Henry, DOE PDF icon Agenda PDF icon January Meeting Materials.pdf More Documents &...

  16. EA Gallery 10 | OSTI, US Dept of Energy Office of Scientific...

    Office of Scientific and Technical Information (OSTI)

    EA Gallery 10 test-image2 ImagePlaceholder-.jpg Read more about test-image2 Brian Hitson Read more about Brian Hitson Mark Martin Read more about Mark Martin Thorium Research image ...

  17. Presentations | OSTI, US Dept of Energy Office of Scientific...

    Office of Scientific and Technical Information (OSTI)

    Improving Access to U.S Department of Energy R&D Results AgencyPublisher Collaboration Brian Hitson Jan 29, 2013 Brian Hitson's picture Multimedia and Datasets: Providing Access ...

  18. Women @ Energy: Cynthia Anderson | Department of Energy

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

    Anderson Women @ Energy: Cynthia Anderson June 6, 2013 - 2:44pm Addthis On left, Dr. Yvonne Commodore, Principal of Lincoln Middle-High School in McClellanville, South Carolina, stands with Cynthia Anderson as part of the annual Principal for Day event with the South Carolina Education Foundation. On left, Dr. Yvonne Commodore, Principal of Lincoln Middle-High School in McClellanville, South Carolina, stands with Cynthia Anderson as part of the annual Principal for Day event with the South

  19. Uranium Processing Facility Team Signs Partnering Agreement ...

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

    Processing Facility ... Uranium Processing Facility Team Signs Partnering Agreement ... Nuclear Security, LLC; John Eschenberg, Uranium Processing Facility Project Office; Brian ...

  20. Microsoft PowerPoint - 9_NRC Roundtable Cover_Wensday_NMMSS_2014...

    National Nuclear Security Administration (NNSA)

    and Industry Roundtable Discussion Paul Adam, Wolf Creek Nuclear Operating Corp Suzanne Ani, NRC Brian Horn, NRC

  1. Microsoft PowerPoint - 9_NRC Roundtable Cover_Wensday_NMMSS_2014_Powerpoint_TEMPLATE.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    and Industry Roundtable Discussion Paul Adam, Wolf Creek Nuclear Operating Corp Suzanne Ani, NRC Brian Horn, NRC

  2. NETL F 451.1/1-1, Categorical Exclusion Designation Form

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

    FOA-0001493 Cornell University Ithaca, NY Smith College - Northampton, MA OE/TDIC/ETD/EDS Team Brian Mollohan Management of Risk and Uncertainty through Co-Operation of Tranmission Systems.. Cornell University will develop a scalable co-optimization solution for transmission and microgrids that include demand response, storage, and renewable resources. BRIAN MOLLOHAN Digitally signed by BRIAN MOLLOHAN DN: c=US, o=U.S. Government, ou=Department of Energy, cn=BRIAN MOLLOHAN,

  3. CSPAD-140k - A Versatile Detector for LCLS Experiments (Conference...

    Office of Scientific and Technical Information (OSTI)

    Herrmann, Sven ; Boutet, Sebastian ; Duda, Brian ; Fritz, David ; Haller, Gunther ; Hart, Philip ; Herbst, Ryan ; Kenney, Christopher ; Lemke, Henrik ; Messerschmidt, Marc ;...

  4. Williams named ASA Fellow

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

    May » Williams named ASA Fellow Williams named ASA Fellow The American Statistical Association (ASA) has honored Brian Williams with the title of Fellow. May 27, 2015 Brian Williams Brian Williams Communications Office (505) 667-7000 His research includes experimental design, computer experiments, Bayesian inference, spatial statistics, and statistical computing. The American Statistical Association (ASA) has honored Brian Williams of LANL's Statistical Sciences group with the title of Fellow.

  5. Mastermind Session: Wisconsin Energy Conservation Corporation...

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

    Better Buildings Neighborhood Program Peer Exchange Call: Program Sustainability Mastermind Session, featuring host Brian Driscoll, Wisconsin Energy Conservation Corporation. Call ...

  6. Microsoft PowerPoint - OZMR presentation 10-06-09.ppt [Compatibility...

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

    Ozark Jeta Taylor Ozark Jeta Taylor Lock, Dam and Powerhouse Lock, Dam and Powerhouse Ozark Jeta Taylor Ozark Jeta Taylor Lock, Dam and Powerhouse Lock, Dam and Powerhouse 3 Lock, ...

  7. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... ; Madey, Richard ; Semenov, Andrei ; Taylor, Simon ; Aghalaryan, Aram ; Crouse, Erick ... Madey, Richard ; Semenov, Andrei ; Taylor, Simon ; Aghalaryan, Aram ; Crouse, Erick ...

  8. NETL F 451.1/1-1, Categorical Exclusion Designation Form

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

    4453 UND EERC Big Stick Oil Field,ND FE/TDIC/Coal/Carbon Storage Team Brian Dressel Identification of Residual Oil Zones in the Williston and Powder River Basins The scope of work includes using a downhole tool to collect pulsed-neutron logs (PNLs) in up to three existing oil wells. 3.2 Brian Dressel Digitally signed by Brian Dressel DN: cn=Brian Dressel, o=National Energy Technology Laboratory, ou=Geologic Storage Division, email=Brian.Dressel@NETL.DOE.GOV, c=US Date: 2016.07.08 08:30:42

  9. Low-GWP Refrigerants for Refrigeration Systems | Department of Energy

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

    Low-GWP Refrigerants for Refrigeration Systems Low-GWP Refrigerants for Refrigeration Systems Brian Fricke conducts research in ORNL's Building Technologies Research & Integration Center. Brian Fricke conducts research in ORNL's Building Technologies Research & Integration Center. Life Cycle Climate Performance of supermarket refrigeration.<br /> Credit: Oak Ridge National Lab Life Cycle Climate Performance of supermarket refrigeration. Credit: Oak Ridge National Lab Brian Fricke

  10. OSTI News Transcripts, International Group Gathers in Knoxville...

    Office of Scientific and Technical Information (OSTI)

    "Sharing research can lead to invaluable opportunities in the commercial, academic and government sectors," said Brian Hitson, chairman of the Energy Technology Data Exchange, or ...