National Library of Energy BETA

Sample records for financial turbulence suggest

  1. A.12d1 Management letter when auditing financial statements of a nonpublic entity (excluding FDICIA engagements)-suggested format (Rev. 9/10)

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

    5 Financial Statement Audit OAI-FS-16-04 January 2016 U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Attachment 1 December 11, 2015 Federal Energy Regulatory Commission, and The Department of Energy, Office of Inspector General Ladies and Gentlemen: In planning and performing our audit of the financial statements of the Federal Energy Regulatory Commission (the Commission or FERC), as of and for the years ended September 30, 2015 and 2014, in accordance

  2. Sudden Viscous Dissipation of Compressing Turbulence

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

    Davidovits, Seth; Fisch, Nathaniel J.

    2016-03-11

    Here we report compression of turbulent plasma can amplify the turbulent kinetic energy, if the compression is fast compared to the viscous dissipation time of the turbulent eddies. A sudden viscous dissipation mechanism is demonstrated, whereby this amplified turbulent kinetic energy is rapidly converted into thermal energy, suggesting a new paradigm for fast ignition inertial fusion.

  3. Financial Institutions

    Broader source: Energy.gov [DOE]

    A lending program begins with a financial institution that procures the funds they lend from a number of other sources.

  4. Turbulent combustion

    SciTech Connect (OSTI)

    Talbot, L.; Cheng, R.K.

    1993-12-01

    Turbulent combustion is the dominant process in heat and power generating systems. Its most significant aspect is to enhance the burning rate and volumetric power density. Turbulent mixing, however, also influences the chemical rates and has a direct effect on the formation of pollutants, flame ignition and extinction. Therefore, research and development of modern combustion systems for power generation, waste incineration and material synthesis must rely on a fundamental understanding of the physical effect of turbulence on combustion to develop theoretical models that can be used as design tools. The overall objective of this program is to investigate, primarily experimentally, the interaction and coupling between turbulence and combustion. These processes are complex and are characterized by scalar and velocity fluctuations with time and length scales spanning several orders of magnitude. They are also influenced by the so-called {open_quotes}field{close_quotes} effects associated with the characteristics of the flow and burner geometries. The authors` approach is to gain a fundamental understanding by investigating idealized laboratory flames. Laboratory flames are amenable to detailed interrogation by laser diagnostics and their flow geometries are chosen to simplify numerical modeling and simulations and to facilitate comparison between experiments and theory.

  5. Financial Opportunities

    Broader source: Energy.gov [DOE]

    Weatherization and Intergovernmental Program provides financial support and technical assistance to states, local governments, and municipal utilities through the projects it manages.

  6. Financial Opportunities

    SciTech Connect (OSTI)

    2012-01-19

    The Water Power Program focuses on technological development, and deployment of innovative technologies capable of generating electricity from water. The program funds research and development activities through competitive solicitations. Financial opportunities are avaliable here.

  7. Approximate Model for Turbulent Stagnation Point Flow.

    SciTech Connect (OSTI)

    Dechant, Lawrence

    2016-01-01

    Here we derive an approximate turbulent self-similar model for a class of favorable pressure gradient wedge-like flows, focusing on the stagnation point limit. While the self-similar model provides a useful gross flow field estimate this approach must be combined with a near wall model is to determine skin friction and by Reynolds analogy the heat transfer coefficient. The combined approach is developed in detail for the stagnation point flow problem where turbulent skin friction and Nusselt number results are obtained. Comparison to the classical Van Driest (1958) result suggests overall reasonable agreement. Though the model is only valid near the stagnation region of cylinders and spheres it nonetheless provides a reasonable model for overall cylinder and sphere heat transfer. The enhancement effect of free stream turbulence upon the laminar flow is used to derive a similar expression which is valid for turbulent flow. Examination of free stream enhanced laminar flow suggests that the rather than enhancement of a laminar flow behavior free stream disturbance results in early transition to turbulent stagnation point behavior. Excellent agreement is shown between enhanced laminar flow and turbulent flow behavior for high levels, e.g. 5% of free stream turbulence. Finally the blunt body turbulent stagnation results are shown to provide realistic heat transfer results for turbulent jet impingement problems.

  8. Dynamics of turbulence spreading in magnetically confined plasmas

    SciTech Connect (OSTI)

    Guercan, Oe.D.; Diamond, P.H.; Hahm, T.S.; Lin, Z.

    2005-03-01

    A dynamical theory of turbulence spreading and nonlocal interaction phenomena is presented. The basic model is derived using Fokker-Planck theory, and supported by wave-kinetic and K-{epsilon} type closures. In the absence of local growth, the model predicts subdiffusive spreading of turbulence. With local growth and saturation via nonlinear damping, ballistic propagation of turbulence intensity fronts is possible. The time asymptotic front speed is set by the geometric mean of local growth and turbulent diffusion. The leading edge of the front progresses as the turbulence comes to local saturation. Studies indicate that turbulence can jump gaps in the local growth rate profile and can penetrate locally marginal or stable regions. In particular, significant fluctuation energy from a turbulent edge can easily spread into the marginally stable core, thus creating an intermediate zone of strong turbulence. This suggests that the traditional distinction between core and edge should be reconsidered.

  9. ARM - VAP Suggestion Form

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

    Suggestion Form Showcase Data ARM Best Estimate Data Products (ARMBE) This is a collection of data products that represents "best estimates" derived from several instruments and/or VAPs. We are interested in your feedback; please contact us. VAP Update Information on new, existing, and future value-added products for July l-September 30, 2015 is now available. Have a VAP idea? Use this form to let us know. Datastream Status Further details on the status of VAPs being processed or

  10. Financial Analysis

    Broader source: Energy.gov [DOE]

    The first step in financing a street lighting retrofit is a detailed financial analysis. Because street lighting systems are designed to last ten or twenty years, or even longer, all aspects of first costs, ongoing expenses, and long-term savings are important. While a preliminary or first-level analysis can be used to determine such things as simple payback, rate of return, and cost of light, the results may neglect a number of important economic considerations, such as the time value of money, additional savings and expenses and their relative timing, and future energy price escalations. Hence a first-level analysis does not typically provide the end user with sufficient details to make a fully informed decision. For this reason, the Illuminating Engineering Society (IES) recommends a full life cycle cost/benefit analysis (LCCBA).

  11. FY 2016 Financial Overview

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

    actual financial results, forecasts of BPA's financial position at the end of the current fiscal year, comparisons of actual financial results to start-of-year budgets and rate...

  12. Radiosonde measurements of turbulence

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

    Turbulence detection on aerial platforms using orientation sensors R. Giles Harrison, Robin J. Hogan, George W. Rogers, Alyssa M. Heath and Keri A. Nicoll Department of Meteorology University of Reading, UK r.g.harrison@reading.ac.uk 2 "Bumpiness" (or turbulence), still remains an aircraft hazard, even at cruising altitudes How can in-situ direct position and orientation sensing can be used to detect turbulence affecting aerial platforms? * Investigated using balloon platforms,

  13. FY 2014 Financial Overview

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

    Liabilities Financial Plan Financial Public Processes Asset Management Cost Verification Process Rate Cases Rate Information Residential Exchange Program Surplus Power Sales...

  14. FY 2015 Financial Overview

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

    Liabilities Financial Plan Financial Public Processes Asset Management Cost Verification Process Rate Cases Rate Information Residential Exchange Program Surplus Power Sales...

  15. FY 2012 Financial Overview

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

    Liabilities Financial Plan Financial Public Processes Asset Management Cost Verification Process Rate Cases Rate Information Residential Exchange Program Surplus Power Sales...

  16. FY 2013 Financial Overview

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

    Liabilities Financial Plan Financial Public Processes Asset Management Cost Verification Process Rate Cases Rate Information Residential Exchange Program Surplus Power Sales...

  17. FY 2009 Financial Overview

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

    Liabilities Financial Plan Financial Public Processes Asset Management Cost Verification Process Rate Cases Rate Information Residential Exchange Program Surplus Power Sales...

  18. FY 2010 Financial Overview

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

    Liabilities Financial Plan Financial Public Processes Asset Management Cost Verification Process Rate Cases Rate Information Residential Exchange Program Surplus Power Sales...

  19. FY 2011 Financial Overview

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

    Liabilities Financial Plan Financial Public Processes Asset Management Cost Verification Process Rate Cases Rate Information Residential Exchange Program Surplus Power Sales...

  20. User Financial Account Form

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

    22013 User Financial Account Form Establish a user financial account at SLAC to procure gases, chemicals, supplies or services to support your experiment at SLAC's user ...

  1. User Financial Account Form

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

    102115 User Financial Account Form Establish a user financial account at SLAC to procure gases, chemicals, supplies or services to support your experiment at SLAC's user ...

  2. Supervisory Financial Analyst

    Broader source: Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration, Corporate Services Office, Office of the Chief Financial Officer, Financial...

  3. Applied Turbulent Combustion

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

    ... Furthermore, combined spontaneous Raman spectroscopy, Rayleigh scatter, and OHCO-laser-induced fluorescence measurements have been used to quantify in situ turbulent flame mixture ...

  4. Financial Management Oversight

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2006-08-31

    The Order defines requirements for effective financial management and adherence to DOE and applicable external financial management requirements and sets forth standards for ensuring the integrity and responsiveness of financial management and the accuracy and reliability of DOEs financial statements. Supersedes DOE O 2200.13.

  5. Chief Financial Officer Responsibilities

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2006-11-21

    The Order sets forth requirements for operating the Department of Energy in full compliance with the Chief Financial Officers Act of 1990 and sets standards for sound financial management policies and practices, effective internal controls, accurate and timely financial information, and well-qualified financial managers. Supersedes DOE O 520.1.

  6. STEP Financial Incentives Summary

    Office of Energy Efficiency and Renewable Energy (EERE)

    STEP Financial Incentives Summary, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  7. Financial Opportunities Delete Me | Department of Energy

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

    Financial Opportunities Delete Me Financial Opportunities Delete Me

  8. Wavenumber spectrum of whistler turbulence: Particle-in-cell simulation

    SciTech Connect (OSTI)

    Saito, S.; Gary, S. Peter; Narita, Y.

    2010-12-15

    The forward cascade of decaying whistler turbulence is studied in low beta plasma to understand essential properties of the energy spectrum at electron scales, by using a two-dimensional electromagnetic particle-in-cell (PIC) simulation. This simulation demonstrates turbulence in which the energy cascade rate is greater than the dissipation rate at the electron inertial length. The PIC simulation shows that the magnetic energy spectrum of forward-cascaded whistler turbulence at electron inertial scales is anisotropic and develops a very steep power-law spectrum which is consistent with recent solar wind observations. A comparison of the simulated spectrum with that predicted by a phenomenological turbulence scaling model suggests that the energy cascade at the electron inertial scale depends on both magnetic fluctuations and electron velocity fluctuations, as well as on the whistler dispersion relation. Thus, not only kinetic Alfven turbulence but also whistler turbulence may explain recent solar wind observations of very steep magnetic spectra at short scales.

  9. BOUndary Plasma Turbulence

    Energy Science and Technology Software Center (OSTI)

    2008-01-25

    BOUT is a parallelized 3D nonlocal electromagnetic turbulence code. The principal calculations are the boundary plasma turbulence in a realistic magnetic geometry. BOUT uses fluid Braginskii equations for plasma vorticity, density, electron and ion temperature and Parallel mementum. With sources added in the core-edge region and sinks in the scrape-off-layer (SOL), BOUT follows the self-consistent profile evolution together with turbulence. BOUT also includes coupling to a magnetohyfrodynamic equlibrium (EFIT package) and a two-dimensional hydrodynamic edgemore » transport model (UEDGE package).« less

  10. Observations of Edge Turbulence

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

    Edge Turbulence near the X-point of Alcator C-Mod APS-2007 (1) J.L. Terry, S.J. Zweben*, B. LaBombard, I. Cziegler, O. Grulke + , D.P. Stotler* MIT - Plasma Science and Fusion...

  11. Financial Opportunities | Department of Energy

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

    Financial Opportunities Financial Opportunities DOE financial opportunities for ... DOE SSL Program The DOE SSL program supports research and development of promising SSL ...

  12. Financial Conflicts of Interest

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

    Department of Energy Financial Assistance Forms and Information For Applicants and Recipients Financial Assistance Forms and Information For Applicants and Recipients Please check the financial opportunity notice before completing and submitting any of these forms. Award Form Financial Assistance Reporting Checklist and Instructions, DOE F 4600.2 Includes Research Performance Progress Report (RPPR) Award Terms National Policy Assurances to be Incorporated as Award Terms Standard Intellectual

  13. Federal Financial Report

    Broader source: Energy.gov [DOE]

    Federal Financial Report, as posted on the U.S. Department of Energy's Better Buildings Neighborhood Program website.

  14. Tribal Financial Management Symposium

    Broader source: Energy.gov [DOE]

    The 3rd Annual Tribal Financial Management Symposium is a two-day event will focus on one of the most important aspects of a tribe's financial management. Attendees will learn about the state of the economy, building a financial constitution, both long- and short-term investments, alternative investment options, and much more.

  15. RELAXATION PROCESSES IN SOLAR WIND TURBULENCE

    SciTech Connect (OSTI)

    Servidio, S.; Carbone, V.; Gurgiolo, C.; Goldstein, M. L.

    2014-07-10

    Based on global conservation principles, magnetohydrodynamic (MHD) relaxation theory predicts the existence of several equilibria, such as the Taylor state or global dynamic alignment. These states are generally viewed as very long-time and large-scale equilibria, which emerge only after the termination of the turbulent cascade. As suggested by hydrodynamics and by recent MHD numerical simulations, relaxation processes can occur during the turbulent cascade that will manifest themselves as local patches of equilibrium-like configurations. Using multi-spacecraft analysis techniques in conjunction with Cluster data, we compute the current density and flow vorticity and for the first time demonstrate that these localized relaxation events are observed in the solar wind. Such events have important consequences for the statistics of plasma turbulence.

  16. Core density turbulence in the HSX Stellarator

    SciTech Connect (OSTI)

    Deng, C. B.; Brower, D. L.; Anderson, D. T.; Anderson, F. S. B.; Briesemeister, Alexis R.; Likin, K. M.

    2015-10-23

    Broadband turbulent density fluctuations are explored in the helically symmetric stellarator experiment (HSX) by investigating changes related to plasma heating power and location. No fluctuation response is observed to occur with large changes in electron temperature and its gradient, thereby eliminating temperature gradient as a driving mechanism. Instead, measurements reveal that density turbulence varies inversely with electron density scale length. This response is consistent with density gradient drive as one might expect for trapped electron mode (TEM) turbulence. In general, the plasma stored energy and particle confinement are higher for discharges with reduced fluctuations in the plasma core. When the density fluctuation amplitude is reduced, increased plasma rotation is also evident suggesting a role is being played by intrinsic plasma flow.

  17. Financial Overview And Monthly Financial Results

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

    with positive financial results. The 3rd Quarter Review end-of-year (EOY) Adjusted Net Revenue forecast is 289 million, a 31 million increase from 2nd Quarter, a 172 million...

  18. Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence

    SciTech Connect (OSTI)

    Donato, S.; Servidio, S.; Carbone, V. [Dipartimento di Fisica, Universita della Calabria, I-87036 Cosenza (Italy); Dmitruk, P. [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Fisica de Buenos Aires, CONICET, Buenos Aires (Argentina); Shay, M. A.; Matthaeus, W. H. [Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States); Cassak, P. A. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States)

    2012-09-15

    The statistical study of magnetic reconnection events in two-dimensional turbulence has been performed by comparing numerical simulations of magnetohydrodynamics (MHD) and Hall magnetohydrodynamics (HMHD). The analysis reveals that the Hall term plays an important role in turbulence, in which magnetic islands simultaneously reconnect in a complex way. In particular, an increase of the Hall parameter, the ratio of ion skin depth to system size, broadens the distribution of reconnection rates relative to the MHD case. Moreover, in HMHD the local geometry of the reconnection region changes, manifesting bifurcated current sheets and quadrupolar magnetic field structures in analogy to laminar studies, leading locally to faster reconnection processes in this case of reconnection embedded in turbulence. This study supports the idea that the global rate of energy dissipation is controlled by the large scale turbulence, but suggests that the distribution of the reconnection rates within the turbulent system is sensitive to the microphysics at the reconnection sites.

  19. Gyrokinetic Simulation of Global Turbulent Transport Properties in Tokamak Experiments

    SciTech Connect (OSTI)

    Wang, W.X.; Lin, Z.; Tang, W.M.; Lee, W.W.; Ethier, S.; Lewandowski, J.L.V.; Rewoldt, G.; Hahm, T.S.; Manickam, J.

    2006-01-01

    A general geometry gyro-kinetic model for particle simulation of plasma turbulence in tokamak experiments is described. It incorporates the comprehensive influence of noncircular cross section, realistic plasma profiles, plasma rotation, neoclassical (equilibrium) electric fields, and Coulomb collisions. An interesting result of global turbulence development in a shaped tokamak plasma is presented with regard to nonlinear turbulence spreading into the linearly stable region. The mutual interaction between turbulence and zonal flows in collisionless plasmas is studied with a focus on identifying possible nonlinear saturation mechanisms for zonal flows. A bursting temporal behavior with a period longer than the geodesic acoustic oscillation period is observed even in a collisionless system. Our simulation results suggest that the zonal flows can drive turbulence. However, this process is too weak to be an effective zonal flow saturation mechanism.

  20. FEMP Suggested ESPC Milestone Plan

    Office of Energy Efficiency and Renewable Energy (EERE)

    Document provides the Federal Energy Management Program's (FEMP's) suggested energy savings performance contract (ESPC) milestones from task order development to award process.

  1. User Financial Account Form

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

    2/20/13 User Financial Account Form Establish a user financial account at SLAC to procure gases, chemicals, supplies or services to support your experiment at SLAC's user facilities and to send samples, dewars, or other equipment between SLAC and your institution. To open or renew your SLAC user financial account, complete and submit this form along with a Purchase Order (PO) from your institution. The PO should be made to SLAC National Accelerator Laboratory for the amount of estimated

  2. Financial Review – Quarterly

    Reports and Publications (EIA)

    2015-01-01

    This analysis focuses on the financial and operating trends of 97 global oil and natural gas companies (called the energy companies).

  3. Financial Management Committee

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

    available by BPA on December 17, 2010 and contains BPA-approved Agency Financial Information. 22 Report ID: 0061FY11 Transmission Services Detailed Statement of Revenues and...

  4. Financial Management Committee

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

    available by BPA on November 28, 2011 and contains BPA-approved Agency Financial Information. 10 Report ID: 0061FY12 Transmission Services Detailed Statement of Revenues and...

  5. Financial Management Committee

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

    available by BPA on January 27, 2012 and contains BPA-approved Agency Financial Information. 13 Report ID: 0061FY12 Transmission Services Detailed Statement of Revenues and...

  6. Financial Management Committee

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

    available by BPA on November 19, 2010 and contains BPA-approved Agency Financial Information. 22 Report ID: 0061FY11 Transmission Services Detailed Statement of Revenues and...

  7. Financial Management Committee

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

    available by BPA on June 29, 2012 and contains BPA-approved Agency Financial Information. 12 Report ID: 0061FY12 Transmission Services Detailed Statement of Revenues and...

  8. Financial Management Committee

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

    5, 2011 and contains BPA-approved Agency Financial Information Customer Collaborative Reports Page 2 This information has been made publicly available by BPA on February 25, 2011...

  9. Acquisition & Financial Assistance Rules Status | Department...

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

    Acquisition & Financial Assistance Rules Status Acquisition & Financial Assistance Rules Status Subscribe to Acquisition & Financial Assistance Rules Status Updates PDF icon ...

  10. Financial and Activity Reports | Department of Energy

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

    Financial and Activity Reports Financial and Activity Reports June 30, 2013 Financial and Activity Report - June 30, 2013 May 31, 2013 Financial and Activity Report - May 31, 2013 ...

  11. Applied Turbulent Combustion

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

    Turbulent Combustion - 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

  12. Financial Assistance | Department of Energy

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

    Assistance Financial Assistance Financial Assistance Regulations Governmentwide Uniform Regulations for Financial Assistance (Omnicircular; Issued 12/26/2013) DOE Financial Assistance Regulations (which Implement and Amend the Omnicircular; Issued 12/19/2014) New Restrictions on Lobbying, 10 CFR Part 601 Epidemiology & Other Health Studies, 10 CFR Part 602 Technology Investment Agreements, 10 CFR 603 Office of Science Financial Assistance Program, 10 CFR Part 605 Previous Financial

  13. Realistic Financial Planning and Rapid

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

    Realistic Financial Planning and Rapid Modification to Project Execution are Essential ... Ignition Facility Title: Realistic Financial Planning and Rapid Modification to ...

  14. Financial Opportunities | Department of Energy

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

    Financial Opportunities Financial Opportunities The U.S. Department of Energy's (DOE) Fuel Cell Technologies (FCT) Office offers information about current and past funding ...

  15. Plasmoid Instabilities Mediated Three-Dimensional Magnetohydrodynamic Turbulent Reconnection

    SciTech Connect (OSTI)

    Huang, Yi-min; Guo, Fan

    2015-07-21

    After some introductory remarks on fast reconnection in resistive MHD due to plasmoid instability, oblique tearing modes in 3D, and previous studies on 3D turbulent reconnection, the subject is presented under the following topics: 3D simulation setup, time evolution of the 3D simulation, comparison with Sweet-Parker and 2D plasmoid reconnection, and diagnostics of the turbulent state (decomposition of mean fields and fluctuations, power spectra of energy fluctuations, structure function and eddy anisotropy with respect to local magnetic field). Three primary conclusions were reached: (1) The results suggest that 3D plasmoid instabilities can lead to self-generated turbulent reconnection (evidence of energy cascade and development of inertial range, energy fluctuations preferentially align with the local magnetic field, which is one of the characteristics of MHD turbulence); (2) The turbulence is highly inhomogeneous, due to the presence of magnetic shear and outflow jets (conventional MHD turbulence theories or phenomenologies may not be applicable – e.g. scale-dependent anisotropy as predicted by Goldreich & Sridhar is not found); (3) 3D turbulent reconnection is different from 2D plasmoid-dominated reconnection in many aspects. However, in fully developed state, reconnection rates in 2D and 3D are comparable — this result needs to be further checked in higher S.

  16. The interaction of high-speed turbulence with flames: Global properties and internal flame structure

    SciTech Connect (OSTI)

    Poludnenko, A.Y.; Oran, E.S. [Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC 20375 (United States)

    2010-05-15

    We study the dynamics and properties of a turbulent flame, formed in the presence of subsonic, high-speed, homogeneous, isotropic Kolmogorov-type turbulence in an unconfined system. Direct numerical simulations are performed with Athena-RFX, a massively parallel, fully compressible, high-order, dimensionally unsplit, reactive flow code. A simplified reaction-diffusion model represents a stoichiometric H{sub 2}-air mixture. The system being modeled represents turbulent combustion with the Damkoehler number Da=0.05 and with the turbulent velocity at the energy injection scale 30 times larger than the laminar flame speed. The simulations show that flame interaction with high-speed turbulence forms a steadily propagating turbulent flame with a flame brush width approximately twice the energy injection scale and a speed four times the laminar flame speed. A method for reconstructing the internal flame structure is described and used to show that the turbulent flame consists of tightly folded flamelets. The reaction zone structure of these is virtually identical to that of the planar laminar flame, while the preheat zone is broadened by approximately a factor of two. Consequently, the system evolution represents turbulent combustion in the thin reaction zone regime. The turbulent cascade fails to penetrate the internal flame structure, and thus the action of small-scale turbulence is suppressed throughout most of the flame. Finally, our results suggest that for stoichiometric H{sub 2}-air mixtures, any substantial flame broadening by the action of turbulence cannot be expected in all subsonic regimes. (author)

  17. Financial Institution Lending Programs

    Broader source: Energy.gov [DOE]

    Financial institution loans for clean energy projects are originated and serviced through an entity other than the government, typically banks. In this case, a state or local government is not the...

  18. Financial Management Committee

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

    Financial Overview for FY 2010 through July 31, 2010 Power Services * The Modified Net Revenue forecast at Start-of-Year was 142 million and the Rate Case forecast was 114...

  19. Financial Management Committee

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

    Financial Overview for FY 2010 through June 30, 2010 Power Services The Modified Net Revenue forecast at Start-of-Year was 142 million and the Rate Case forecast was 114...

  20. Financial Management Committee

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

    contains BPA-approved Agency Financial Information Agency - The end-of-year net revenue forecast for the 2nd Quarter Review is 42 million. This is 58 million higher than...

  1. Financial Management Committee

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

    Financial Overview for FY 2010 through March 31, 2010 Power Services The Modified Net Revenue forecast at Start-of-Year was 142 million and the Rate Case forecast was 114...

  2. Project financial evaluation

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The project financial section of the Renewable Energy Technology Characterizations describes structures and models to support the technical and economic status of emerging renewable energy options for electricity supply.

  3. Current Financial Opportunities

    Broader source: Energy.gov [DOE]

    Current hydrogen-related funding opportunities through the U.S. Department of Energy's (DOE) Fuel Cell Technologies Office are listed below. The Fuel Cell Technologies Office offers opportunities for both financial and technical assistance.

  4. Chapter 21 - Financial Closeout

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

    CHAPTER 21 FINANCIAL CLOSEOUT 1. INTRODUCTION. a. Purpose. This chapter describes the financial policy for the closeout of contracts and other acquisition, assistance (e.g., grants and cooperative agreements), and interagency instruments. Nonfinancial closeout procedures for acquisition contracts are described in the Federal Acquisition Regulation (FAR), parts 4 and 42. b. Applicability. This chapter applies to all Departmental elements and their contractors performing work for the Department of

  5. Magnetized Turbulent Dynamo in Protogalaxies

    SciTech Connect (OSTI)

    Leonid Malyshkin; Russell M. Kulsrud

    2002-01-28

    The prevailing theory for the origin of cosmic magnetic fields is that they have been amplified to their present values by the turbulent dynamo inductive action in the protogalactic and galactic medium. Up to now, in calculation of the turbulent dynamo, it has been customary to assume that there is no back reaction of the magnetic field on the turbulence, as long as the magnetic energy is less than the turbulent kinetic energy. This assumption leads to the kinematic dynamo theory. However, the applicability of this theory to protogalaxies is rather limited. The reason is that in protogalaxies the temperature is very high, and the viscosity is dominated by magnetized ions. As the magnetic field strength grows in time, the ion cyclotron time becomes shorter than the ion collision time, and the plasma becomes strongly magnetized. As a result, the ion viscosity becomes the Braginskii viscosity. Thus, in protogalaxies the back reaction sets in much earlier, at field strengths much lower than those which correspond to field-turbulence energy equipartition, and the turbulent dynamo becomes what we call the magnetized turbulent dynamo. In this paper we lay the theoretical groundwork for the magnetized turbulent dynamo. In particular, we predict that the magnetic energy growth rate in the magnetized dynamo theory is up to ten times larger than that in the kinematic dynamo theory. We also briefly discuss how the Braginskii viscosity can aid the development of the inverse cascade of magnetic energy after the energy equipartition is reached.

  6. Advances in compressible turbulent mixing

    SciTech Connect (OSTI)

    Dannevik, W.P.; Buckingham, A.C.; Leith, C.E.

    1992-01-01

    This volume includes some recent additions to original material prepared for the Princeton International Workshop on the Physics of Compressible Turbulent Mixing, held in 1988. Workshop participants were asked to emphasize the physics of the compressible mixing process rather than measurement techniques or computational methods. Actual experimental results and their meaning were given precedence over discussions of new diagnostic developments. Theoretical interpretations and understanding were stressed rather than the exposition of new analytical model developments or advances in numerical procedures. By design, compressibility influences on turbulent mixing were discussed--almost exclusively--from the perspective of supersonic flow field studies. The papers are arranged in three topical categories: Foundations, Vortical Domination, and Strongly Coupled Compressibility. The Foundations category is a collection of seminal studies that connect current study in compressible turbulent mixing with compressible, high-speed turbulent flow research that almost vanished about two decades ago. A number of contributions are included on flow instability initiation, evolution, and transition between the states of unstable flow onset through those descriptive of fully developed turbulence. The Vortical Domination category includes theoretical and experimental studies of coherent structures, vortex pairing, vortex-dynamics-influenced pressure focusing. In the Strongly Coupled Compressibility category the organizers included the high-speed turbulent flow investigations in which the interaction of shock waves could be considered an important source for production of new turbulence or for the enhancement of pre-existing turbulence. Individual papers are processed separately.

  7. Retrofit Financial Analysis Tool

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Street and Parking Facility Lighting Retrofit Financial Analysis Tool was developed by a partnership of the DOE Municipal Solid-State Street Lighting Consortium, the Clinton Climate Initiative (CCI)/C40, and the Federal Energy Management Program (FEMP), for the financial analysis of retrofitting street and parking facility lighting with more efficient alternatives. Property owners, city and other government agencies, utilities, and energy efficiency organizations can use this tool to compute annualized energy and energy-cost savings, maintenance savings, greenhouse gas reductions, net present value, and simple payback associated with potential lighting upgrades.

  8. Turbulent Flame Propagation Characteristics of High Hydrogen Content Fuels

    SciTech Connect (OSTI)

    Seitzman, Jerry; Lieuwen, Timothy

    2014-09-30

    This final report describes the results of an effort to better understand turbulent flame propagation, especially at conditions relevant to gas turbines employing fuels with syngas or hydrogen mixtures. Turbulent flame speeds were measured for a variety of hydrogen/carbon monoxide (H2/CO) and hydrogen/methane (H2/CH4) fuel mixtures with air as the oxidizer. The measurements include global consumption speeds (ST,GC) acquired in a turbulent jet flame at pressures of 1-10 atm and local displacement speeds (ST,LD) acquired in a low-swirl burner at atmospheric pressure. The results verify the importance of fuel composition in determining turbulent flame speeds. For example, different fuel-air mixtures having the same unstretched laminar flame speed (SL,0) but different fuel compositions resulted in significantly different ST,GC for the same turbulence levels (u'). This demonstrates the weakness of turbulent flame speed correlations based simply on u'/SL,0. The results were analyzed using a steady-steady leading points concept to explain the sensitivity of turbulent burning rates to fuel (and oxidizer) composition. Leading point theories suggest that the premixed turbulent flame speed is controlled by the flame front characteristics at the flame brush leading edge, or, in other words, by the flamelets that advance farthest into the unburned mixture (the so-called leading points). For negative Markstein length mixtures, this is assumed to be close to the maximum stretched laminar flame speed (SL,max) for the given fuel-oxidizer mixture. For the ST,GC measurements, the data at a given pressure were well-correlated with an SL,max scaling. However the variation with pressure was not captured, which may be due to non-quasi-steady effects that are not included in the current model. For the ST,LD data, the leading points model again faithfully captured the variation of turbulent flame speed over a wide range of fuel-compositions and turbulence intensities. These results provide

  9. EERE Financial Opportunities

    SciTech Connect (OSTI)

    2012-04-19

    The Office of Energy Efficiency and Renewable Energy (EERE) works with business, industry, universities, and others to increase the use of renewable energy and energy efficiency technologies. One way EERE encourages the growth of these technologies is by offering financial assistance opportunities for their development and demonstration.

  10. Compound cooling flow turbulator for turbine component

    DOE Patents [OSTI]

    Lee, Ching-Pang; Jiang, Nan; Marra, John J; Rudolph, Ronald J

    2014-11-25

    Multi-scale turbulation features, including first turbulators (46, 48) on a cooling surface (44), and smaller turbulators (52, 54, 58, 62) on the first turbulators. The first turbulators may be formed between larger turbulators (50). The first turbulators may be alternating ridges (46) and valleys (48). The smaller turbulators may be concave surface features such as dimples (62) and grooves (54), and/or convex surface features such as bumps (58) and smaller ridges (52). An embodiment with convex turbulators (52, 58) in the valleys (48) and concave turbulators (54, 62) on the ridges (46) increases the cooling surface area, reduces boundary layer separation, avoids coolant shadowing and stagnation, and reduces component mass.

  11. Form:Financial Organization | Open Energy Information

    Open Energy Info (EERE)

    Financial Organization Jump to: navigation, search Add a Financial Organization Input the name of the finanical organization below to add it to the registry. If the financial...

  12. STEP Financial Incentives Summary | Department of Energy

    Energy Savers [EERE]

    STEP Financial Incentives Summary STEP Financial Incentives Summary STEP Financial Incentives Summary, from the Tool Kit Framework: Small Town University Energy Program (STEP). PDF ...

  13. User Financial Accounts | Linac Coherent Light Source

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

    Financial Accounts Why Have a User Financial Account? Each user group should establish a user financial account to procure gases, chemicals, supplies or services to support their ...

  14. Selected Past Financial Awards | Department of Energy

    Office of Environmental Management (EM)

    Financial Opportunities Past Opportunities Selected Past Financial Awards Selected Past Financial Awards Since 2003, DOE has awarded funding to a number of science and ...

  15. User Financial Accounts | Stanford Synchrotron Radiation Lightsource

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

    Financial Accounts Why Have a User Financial Account? Each user group should establish a user financial account to procure gases, chemicals, supplies or services to support your ...

  16. Boundary Layer Cloud Turbulence Characteristics

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

    Boundary Layer Cloud Turbulence Characteristics Virendra Ghate Bruce Albrecht Parameter Observational Readiness (/10) Modeling Need (/10) Cloud Boundaries 9 9 Cloud Fraction Variance Skewness Up/Downdraft coverage Dominant Freq. signal Dissipation rate ??? Observation-Modeling Interface

  17. Financial Opportunities - Energy Innovation Portal

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

    Financial Opportunities The Office of Energy Efficiency and Renewable Energy (EERE) works with business, industry, universities, and others to increase the use of renewable energy and energy efficiency technologies. One way EERE encourages the growth of these technologies is by offering financial assistance opportunities for their development and demonstration. For more information, visit the EERE Financial Opportunities Home Page. Get the EERE Financial Opps widget and many other great free

  18. Heating National Ignition Facility, Realistic Financial Planning...

    Office of Environmental Management (EM)

    National Ignition Facility, Realistic Financial Planning & Rapid Modification Lessons Learned Report Apr 2010 Heating National Ignition Facility, Realistic Financial Planning &...

  19. Turbulence transport modeling of the temporal outer heliosphere

    SciTech Connect (OSTI)

    Adhikari, L.; Zank, G. P.; Hu, Q.; Dosch, A.

    2014-09-20

    The solar wind can be regarded as a turbulent magnetofluid, evolving in an expanding solar wind and subject to turbulent driving by a variety of in situ sources. Furthermore, the solar wind and the drivers of turbulence are highly time-dependent and change with solar cycle. Turbulence transport models describing low-frequency magnetic and velocity fluctuations in the solar wind have so far neglected solar cycle effects. Here we consider the effects of solar cycle variability on a turbulence transport model developed by Zank et al. This model is appropriate for the solar wind beyond about 1 AU, and extensions have described the steady-state dependence of the magnetic energy density fluctuations, correlation length, and solar wind temperature throughout the outer heliosphere. We find that the temporal solar wind introduces a periodic variability, particularly beyond ?10 AU, in the magnetic energy density fluctuations, correlation length, and solar wind temperature. The variability is insufficient to account for the full observed variability in these quantities, but we find that the time-dependent solutions trace the steady-state solutions quite well, suggesting that the steady-state models are reasonable first approximations.

  20. Magnetohydrodynamic turbulence: Observation and experiment

    SciTech Connect (OSTI)

    Brown, M. R.; Schaffner, D. A.; Weck, P. J.

    2015-05-15

    We provide a tutorial on the paradigms and tools of magnetohydrodynamic (MHD) turbulence. The principal paradigm is that of a turbulent cascade from large scales to small, resulting in power law behavior for the frequency power spectrum for magnetic fluctuations E{sub B}(f). We will describe five useful statistical tools for MHD turbulence in the time domain: the temporal autocorrelation function, the frequency power spectrum, the probability distribution function of temporal increments, the temporal structure function, and the permutation entropy. Each of these tools will be illustrated with an example taken from MHD fluctuations in the solar wind. A single dataset from the Wind satellite will be used to illustrate all five temporal statistical tools.

  1. Supercomputers Capture Turbulence in the Solar Wind

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

    Supercomputers Capture Turbulence in the Solar Wind Supercomputers Capture Turbulence in the Solar Wind Berkeley Lab visualizations could help scientists forecast destructive space weather December 16, 2013 Linda Vu, +1 510 495 2402, lvu@lbl.gov eddies1.jpg This visualization zooms in on current sheets revealing the "cascade of turbulence" in the solar wind occurring down to electron scales. This is a phenomenon common in fluid dynamics-turbulent energy injected at large eddies is

  2. SSRL User Financial Account Form

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

    07/25/16 SSRL User Financial Account Form Establish an SSRL user financial account at SLAC to procure gases, chemicals, supplies or services to support your experiment at SLAC's user facilities or to send samples, dewars, or other equipment between SLAC and your institution. To open or renew your SLAC user financial account, complete and submit this form along with a Purchase Order (PO) from your institution. The PO should be made to SLAC National Accelerator Laboratory for the amount of

  3. Financial Opportunities | Department of Energy

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

    Financial Opportunities Financial Opportunities The Department of Energy (DOE) is a major provider of funding for basic and applied research for converting biomass resources into biofuels. Many financial assistance opportunities are available for small-scale to large-scale research activities. Funding opportunities specific to DOE's Office of Energy Efficiency and Renewable Energy (EERE), including the Bioenergy Technologies Office's solicitations, can be found on EERE's Funding Opportunity

  4. Financial Analyst (Senior Policy Advisor)

    Broader source: Energy.gov [DOE]

    This position is located in the Treasury organization and directs financial planning and investment of funds for Bonneville Power Administration and exercises authority for receipt, disbursement,...

  5. Financial, Audits, and Contracts Services

    Broader source: Energy.gov [DOE]

    The Office of Legacy Management’s (LM) Financial, Audits, and Contracts Services (FACS) Team performs the following management functions:

  6. Infrastructure Development and Financial Analysis

    Broader source: Energy.gov [DOE]

    Infrastructure Development and Financial Analysis quantifies the total costs of scenarios for developing the hydrogen infrastructure, including production, delivery, and utilization. By combining...

  7. Afterburning in spherical premixed turbulent explosions

    SciTech Connect (OSTI)

    Bradley, D.; Lawes, M.; Scott, M.J. . Dept. of Mechanical Engineering); Mushi, E.M.J. )

    1994-12-01

    During the early stages of spherical turbulent flame propagation, more than half of the gas behind the visible flame front may be unburned. Previous models of the afterburning of the gas behind the apparent flame front have been extended in the present work, to include the effects of flame quenching, consequent upon localized flame stretch. The predictions of the model cover, the spatial and temporal variations of the fraction burned, the flame propagation rate, and the mass burning rate. They are all in dimensionless form and are well supported by associated experimental measurements in a fan-stirred bomb with controlled turbulence. The proportion of the gas that is unburned decreases with time and increases with the product of the Karlovitz stretch factor and the Lewis number. Simultaneous photographs were taken of the spherical schlieren image and of that due to Mie scattering from small seed particles in a thin laser sheet that sectioned the spherical flame. These clearly showed the amount of unburned gas within the sphere and, along with other evidence suggest laminar flamelet burning across a scale of distance which is close to the Taylor confirm the predictions of the fraction of gas unburned and of the rate at which it is burning.

  8. Dissipation of turbulence in the wake of a wind turbine

    SciTech Connect (OSTI)

    Lundquist, J. K.; Bariteau, L.

    2014-11-06

    The wake of a wind turbine is characterized by increased turbulence and decreased wind speed. Turbines are generally deployed in large groups in wind farms, and so the behaviour of an individual wake as it merges with other wakes and propagates downwind is critical in assessing wind-farm power production. This evolution depends on the rate of turbulence dissipation in the wind-turbine wake, which has not been previously quantified in field-scale measurements. In situ measurements of winds and turbulence dissipation from the wake region of a multi-MW turbine were collected using a tethered lifting system (TLS) carrying a payload of high-rate turbulence probes. Ambient flow measurements were provided from sonic anemometers on a meteorological tower located near the turbine. Good agreement between the tower measurements and the TLS measurements was established for a case without a wind-turbine wake. When an operating wind turbine is located between the tower and the TLS so that the wake propagates to the TLS, the TLS measures dissipation rates one to two orders of magnitude higher in the wake than outside of the wake. These data, collected between two and three rotor diameters D downwind of the turbine, document the significant enhancement of turbulent kinetic energy dissipation rate within the wind-turbine wake. These wake measurements suggest that it may be useful to pursue modelling approaches that account for enhanced dissipation. Furthermore. comparisons of wake and non-wake dissipation rates to mean wind speed, wind-speed variance, and turbulence intensity are presented to facilitate the inclusion of these measurements in wake modelling schemes.

  9. Dissipation of turbulence in the wake of a wind turbine

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

    Lundquist, J. K.; Bariteau, L.

    2014-11-06

    The wake of a wind turbine is characterized by increased turbulence and decreased wind speed. Turbines are generally deployed in large groups in wind farms, and so the behaviour of an individual wake as it merges with other wakes and propagates downwind is critical in assessing wind-farm power production. This evolution depends on the rate of turbulence dissipation in the wind-turbine wake, which has not been previously quantified in field-scale measurements. In situ measurements of winds and turbulence dissipation from the wake region of a multi-MW turbine were collected using a tethered lifting system (TLS) carrying a payload of high-ratemore » turbulence probes. Ambient flow measurements were provided from sonic anemometers on a meteorological tower located near the turbine. Good agreement between the tower measurements and the TLS measurements was established for a case without a wind-turbine wake. When an operating wind turbine is located between the tower and the TLS so that the wake propagates to the TLS, the TLS measures dissipation rates one to two orders of magnitude higher in the wake than outside of the wake. These data, collected between two and three rotor diameters D downwind of the turbine, document the significant enhancement of turbulent kinetic energy dissipation rate within the wind-turbine wake. These wake measurements suggest that it may be useful to pursue modelling approaches that account for enhanced dissipation. Furthermore. comparisons of wake and non-wake dissipation rates to mean wind speed, wind-speed variance, and turbulence intensity are presented to facilitate the inclusion of these measurements in wake modelling schemes.« less

  10. Financial Assistance Guide (2013) | Department of Energy

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

    Financial Assistance Guide (2013) Financial Assistance Guide (2013) Financial Assistance Guide (2013).pdf (539.19 KB) More Documents & Publications Guidance Documents Revised Guide for Financial Assistance U.S. Department of Energy - Guide to Financial Assistance - Audit Requirements for For-Profit Organizations

  11. Financial Opportunities | Department of Energy

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

    Financial Opportunities Financial Opportunities To accomplish the goals of the SunShot Initiative, the U.S. Department of Energy Solar Energy Technologies Office supports funding opportunities on photovoltaics, concentrating solar power, systems integration, technology to market, and soft costs projects. Following an open, competitive solicitation process, these funding opportunities encourage collaborative partnerships among industry, universities, national laboratories, federal, state, and

  12. Oracle Financials PIA, Bechtel Jacobs Company, LLC | Department...

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

    Oracle Financials PIA, Bechtel Jacobs Company, LLC Oracle Financials PIA, Bechtel Jacobs Company, LLC Oracle Financials PIA, Bechtel Jacobs Company, LLC PDF icon Oracle Financials ...

  13. Turbulence Investigation and Reproduction for Assisting Downstream Migrating Juvenile Salmonids, Part II of II; Effects of Induced Turbulence on Behavior of Juvenile Salmon, 2001-2005 Final Report.

    SciTech Connect (OSTI)

    Perry, Russell W.; Farley, M. Jared; Hansen, Gabriel S.

    2005-07-01

    Passage through dams is a major source of mortality of anadromous juvenile salmonids because some populations must negotiate up to eight dams in Columbia and Snake rivers. Dams cause direct mortality when fish pass through turbines, but dams may also cause indirect mortality by altering migration conditions in rivers. Forebays immediately upstream of dams have decreased the water velocity of rivers and may contribute substantially to the total migration delay of juvenile salmonids. Recently, Coutant (2001a) suggested that in addition to low water velocities, lack of natural turbulence may contribute to migration delay by causing fish to lose directional cues. Coutant (2001a) further hypothesized that restoring turbulence in dam forebays may reduce migration delay by providing directional cues that allow fish to find passage routes more quickly (Coutant 2001a). Although field experiments have yielded proof of the concept of using induced turbulence to guide fish to safe passage routes, little is known about mechanisms actually causing behavioral changes. To test hypotheses about how turbulence influences movement and behavior of migrating juvenile salmonids, we conducted two types of controlled experiments at Cowlitz Falls Dam, Washington. A common measure of migration delay is the elapsed time between arrival at, and passage through, a dam. Therefore, for the first set of experiments, we tested the effect of induced turbulence on the elapsed time needed for fish to traverse through a raceway and pass over a weir at its downstream end (time trial experiment). If turbulence helps guide fish to passage routes, then fish should pass through the raceway quicker in the presence of appropriately scaled and directed turbulent cues. Second, little is known about how the physical properties of water movement provide directional cues to migrating juvenile salmonids. To examine the feasibility of guiding fish with turbulence, we tested whether directed turbulence could guide

  14. Active Financial Assistance Letters | Department of Energy

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

    Active Financial Assistance Letters Active Financial Assistance Letters Below is a list of all active Financial Assistance Letters with the most recent FALs on top. May 11, 2016 Financial Assistance Letter No. FAL 2016-03 Pre-Award Risk Assessments and the utilization of the Federal Awardee Performance and Integrity Information System (FAPIIS). February 17, 2016 Financial Assistance Letter No. FAL 2016-02 Congressional Notifications and Quarterly March 7, 2016 Financial Assistance Letter No. FAL

  15. Turbulent equipartitions in two dimensional drift convection

    SciTech Connect (OSTI)

    Isichenko, M.B.; Yankov, V.V.

    1995-07-25

    Unlike the thermodynamic equipartition of energy in conservative systems, turbulent equipartitions (TEP) describe strongly non-equilibrium systems such as turbulent plasmas. In turbulent systems, energy is no longer a good invariant, but one can utilize the conservation of other quantities, such as adiabatic invariants, frozen-in magnetic flux, entropy, or combination thereof, in order to derive new, turbulent quasi-equilibria. These TEP equilibria assume various forms, but in general they sustain spatially inhomogeneous distributions of the usual thermodynamic quantities such as density or temperature. This mechanism explains the effects of particle and energy pinch in tokamaks. The analysis of the relaxed states caused by turbulent mixing is based on the existence of Lagrangian invariants (quantities constant along fluid-particle or other orbits). A turbulent equipartition corresponds to the spatially uniform distribution of relevant Lagrangian invariants. The existence of such turbulent equilibria is demonstrated in the simple model of two dimensional electrostatically turbulent plasma in an inhomogeneous magnetic field. The turbulence is prescribed, and the turbulent transport is assumed to be much stronger than the classical collisional transport. The simplicity of the model makes it possible to derive the equations describing the relaxation to the TEP state in several limits.

  16. Guide to Financial Assistance | Department of Energy

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

    Regulatory requirements are contained in the DOE Financial Assistance Rules, 10 CFR Part 600 and applicable program rules. Each year DOE obligates nearly 2 billion on financial ...

  17. Envisory Financial Risk Management | Open Energy Information

    Open Energy Info (EERE)

    Envisory Financial Risk Management Jump to: navigation, search Name: Envisory Financial Risk Management Place: Mnchen, Bavaria, Germany Zip: 80331 Sector: Renewable Energy...

  18. Financial Institution Lending Program Webinars | Department of...

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

    Provides a listing of past Financial Institution Lending Program webinars and associated files. Author: U. S. Department of Energy, Energy Efficiency & Renewable Energy Financial ...

  19. NNG Financial Corporation | Open Energy Information

    Open Energy Info (EERE)

    NNG Financial Corporation Jump to: navigation, search Name: NNG Financial Corporation Place: Portland, Oregon Zip: 97209 Sector: Wind energy Product: A wholly owned subsidiary of...

  20. Renewable Energy Technologies Financial Model (RET Finance) ...

    Open Energy Info (EERE)

    Financial Model (RET Finance) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Renewable Energy Technologies Financial Model (RET Finance) Focus Area: Renewable Energy...

  1. LPO Financial Performance Report | Department of Energy

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

    LPO Financial Performance Report November 2014 (553.79 KB) More Documents & Publications PORTFOLIO PERFORMANCE LPO Financial Performance Report Powering New Markets: Utility-scale ...

  2. Agreement for Minority Financial Institutions Participation in...

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

    MFIParticipationAgreement.pdf (443.54 KB) More Documents & Publications Agreement for Minority Financial Institutions Participation in the Bank Deposit Financial Assistance ...

  3. Agreement for Minority Financial Institutions Participation in...

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

    Agreement for Minority Banking Program (221.7 KB) More Documents & Publications Agreement for Minority Financial Institutions Participation in the Bank Deposit Financial Assistance ...

  4. Securing Financial Incentives for Energy Efficiency Projects...

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

    Securing Financial Incentives for Energy Efficiency Projects: How to Create Corporate Support Securing Financial Incentives for Energy Efficiency Projects: How to Create Corporate ...

  5. Financial Assistance Funding Opportunity Announcement | Department...

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

    Financial Assistance Funding Opportunity Announcement Financial Assistance Funding Opportunity Announcement AMERICAN RECOVERY AND REINVESTMENT ACT OF 2009 Projects under this FOA ...

  6. Microgy Financial Services Inc | Open Energy Information

    Open Energy Info (EERE)

    Financial Services Inc Jump to: navigation, search Name: Microgy Financial Services Inc Place: Portsmouth, New Hampshire Zip: 3801 Product: Wholly-owned subsidiary of Environmental...

  7. Vireo Energy Financial Services | Open Energy Information

    Open Energy Info (EERE)

    Vireo Energy Financial Services Jump to: navigation, search Name: Vireo Energy Financial Services Place: Malibu, California Zip: 90265 Sector: Efficiency, Renewable Energy,...

  8. Providence Financial Services Ltd | Open Energy Information

    Open Energy Info (EERE)

    Financial Services Ltd Jump to: navigation, search Name: Providence Financial Services Ltd Place: Stanford, Connecticut Sector: Biomass, Renewable Energy, Services Product:...

  9. Distributed Energy Financial Group | Open Energy Information

    Open Energy Info (EERE)

    Financial Group Jump to: navigation, search Name: Distributed Energy Financial Group Place: Washington, DC, Washington, DC Zip: 20016-25 12 Sector: Services Product: The...

  10. Protein Structure Suggests Role as Molecular Adapter

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

    Protein Structure Suggests Role as Molecular Adapter Print To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known as the...

  11. Protein Structure Suggests Role as Molecular Adapter

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

    Structure Suggests Role as Molecular Adapter Print To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known as the...

  12. Office of Chief Financial Officer

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2001-01-19

    This Order implements the provisions of the Chief Financial Officers Act of 1990 within the Department of Energy. Cancels SEN 34-91. Canceled by DOE O 520.1A.

  13. Revised Guide for Financial Assistance

    Office of Energy Efficiency and Renewable Energy (EERE)

    Attached is a revised Guide for Financial Assistance. The Guide has been updated to reflect changes to web sites, organization names, systems, and DOE policies and practices since the guide was last issued.

  14. Turbulence and waves in the solar wind

    SciTech Connect (OSTI)

    Roberts, D.A.; Goldstein, M.L. )

    1991-01-01

    Studies of turbulence and waves in the solar wind is discussed. Consideration is given to the observations and theory concerning the origin and evolution of interplanetary MHD fluctuations and to the observations, theory, and simulations of compressive fluctuations. Particular attention is given to extrapolations to near-sun and polar fields regions. Results obtained on turbulence at comets and magnetic turbulence of low-frequency waves excited by unstable distributions of ions are discussed. 230 refs.

  15. DOE_Grants_Financial_Opportunities

    Office of Environmental Management (EM)

    DOE's (EERE & FE) Grants and Financial Opportunities of Session * Joseph Giove III, Director of Coal Business Operations, Office of Fossil Energy (FE) * David Orens, Grants Management Specialist, Office of Energy Efficiency and Renewable Energy (EERE) * Lalida Crawford, Grants Management Specialist, Office of Energy Efficiency and Renewable Energy (EERE) 2 Overview of grants and financial opportunities EERE * Bioenergy * Fuel Cells * Solar Power * Wind Power * Water Power * Geothermal Power

  16. Financial Opportunities | Department of Energy

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

    Financial Opportunities Financial Opportunities The Water Power Program focuses on technological development and deployment of innovative technologies capable of generating electricity from water. The program funds research and development activities through competitive solicitations. Current Opportunities Solicitation Title Open Date Close Date HydroNEXT FOA: Innovative Technologies to Advance Non-Powered Dam and Pumped-Storage Hydropower Development 7/26/2016 10/7/2016 Notice of Intent: Wave

  17. Stochastic (w*) Convergence for Turbulent Combustion | Argonne...

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

    Stochastic (w*) Convergence for Turbulent Combustion PI Name: James Glimm PI Email: ... chemistry for LES, and (2) stochastic (w*) convergence based on probability ...

  18. Visible imaging of edge turbulence in NSTX

    SciTech Connect (OSTI)

    S. Zweben; R. Maqueda; K. Hill; D. Johnson; et al

    2000-06-13

    Edge plasma turbulence in tokamaks and stellarators is believed to cause the radical heat and particle flux across the separatrix and into the scrape-off-layers of these devices. This paper describes initial measurements of 2-D space-time structure of the edge density turbulence made using a visible imaging diagnostic in the National Spherical Torus Experiment (NSTX). The structure of the edge turbulence is most clearly visible using a method of gas puff imaging to locally illuminate the edge density turbulence.

  19. 3 - 4 Turbulent combustion Princeton.key

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

    real question The flame surface density is created by flameturbulence interactions. Writing an equation for it requires to rederive equations for an interface in turbulence...

  20. Turbulence at Hydroelectric Power Plants and its Potential Effects on Fish.

    SciTech Connect (OSTI)

    Cada, Glenn F.; Odeh, Mufeed

    2001-01-01

    The fundamental influence of fluid dynamics on aquatic organisms is receiving increasing attention among aquatic ecologists. For example, the importance of turbulence to ocean plankton has long been a subject of investigation (Peters and Redondo 1997). More recently, studies have begun to emerge that explicitly consider the effects of shear and turbulence on freshwater invertebrates (Statzner et al. 1988; Hart et al. 1996) and fishes (Pavlov et al. 1994, 1995). Hydraulic shear stress and turbulence are interdependent natural fluid phenomena that are important to fish, and consequently it is important to develop an understanding of how fish sense, react to, and perhaps utilize these phenomena under normal river flows. The appropriate reaction to turbulence may promote movement of migratory fish or prevent displacement of resident fish. It has been suggested that one of the adverse effects of flow regulation by hydroelectric projects is the reduction of normal turbulence, particularly in the headwaters of reservoirs, which can lead to disorientation and slowing of migration (Williams et al. 1996; Coutant et al. 1997; Coutant 1998). On the other hand, greatly elevated levels of shear and turbulence may be injurious to fish; injuries can range from removal of the mucous layer on the body surface to descaling to torn opercula, popped eyes, and decapitation (Neitzel et al. 2000a,b). Damaging levels of fluid stress can occur in a variety of circumstances in both natural and man-made environments. This paper discusses the effects of shear stress and turbulence on fish, with an emphasis on potentially damaging levels in man-made environments. It defines these phenomena, describes studies that have been conducted to understand their effects, and identifies gaps in our knowledge. In particular, this report reviews the available information on the levels of turbulence that can occur within hydroelectric power plants, and the associated biological effects. The final section

  1. Magnetic reconnection in the presence of externally driven and self-generated turbulence

    SciTech Connect (OSTI)

    Karimabadi, H.; Lazarian, A.

    2013-11-15

    Magnetic reconnection is an important process that violates flux freezing and induces change of magnetic field topology in conducting fluids and, as a consequence, converts magnetic field energy into particle energy. It is thought to be operative in laboratory, heliophysical, and astrophysical plasmas. These environments exhibit wide variations in collisionality, ranging from collisionless in the Earth's magnetosphere to highly collisional in molecular clouds. A common feature among these plasmas is, however, the presence of turbulence. We review the present understanding of the effects of turbulence on the reconnection rate, discussing both how strong pre-existing turbulence modifies Sweet-Parker reconnection and how turbulence may develop as a result of reconnection itself. In steady state, reconnection rate is proportional to the aspect ratio of the diffusion region. Thus, two general MHD classes of models for fast reconnection have been proposed, differing on whether they keep the aspect ratio finite by increasing the width due to turbulent broadening or shortening the length of the diffusion layer due to plasmoid instability. One of the consequences of the plasmoid instability model is the possibility that the current sheet thins down to collisionless scales where kinetic effects become dominant. As a result, kinetic effects may be of importance for many astrophysical applications which were considered to be in the realm of MHD. Whether pre-existing turbulence can significantly modify the transition to the kinetic regime is not currently known. Although most studies of turbulent reconnection have been based on MHD, recent advances in kinetic simulations are enabling 3D studies of turbulence and reconnection in the collisionless regime. A summary of these recent works, highlighting similarities and differences with the MHD models of turbulent reconnection, as well as comparison with in situ observations in the magnetosphere and in the solar wind, are presented

  2. SciDAC Center for Gyrokinetic Particle Simulation of Turbulent Transport in Burning Plasmas

    SciTech Connect (OSTI)

    Lin, Zhihong

    2013-12-18

    During the first year of the SciDAC gyrokinetic particle simulation (GPS) project, the GPS team (Zhihong Lin, Liu Chen, Yasutaro Nishimura, and Igor Holod) at the University of California, Irvine (UCI) studied the tokamak electron transport driven by electron temperature gradient (ETG) turbulence, and by trapped electron mode (TEM) turbulence and ion temperature gradient (ITG) turbulence with kinetic electron effects, extended our studies of ITG turbulence spreading to core-edge coupling. We have developed and optimized an elliptic solver using finite element method (FEM), which enables the implementation of advanced kinetic electron models (split-weight scheme and hybrid model) in the SciDAC GPS production code GTC. The GTC code has been ported and optimized on both scalar and vector parallel computer architectures, and is being transformed into objected-oriented style to facilitate collaborative code development. During this period, the UCI team members presented 11 invited talks at major national and international conferences, published 22 papers in peer-reviewed journals and 10 papers in conference proceedings. The UCI hosted the annual SciDAC Workshop on Plasma Turbulence sponsored by the GPS Center, 2005-2007. The workshop was attended by about fifties US and foreign researchers and financially sponsored several gradual students from MIT, Princeton University, Germany, Switzerland, and Finland. A new SciDAC postdoc, Igor Holod, has arrived at UCI to initiate global particle simulation of magnetohydrodynamics turbulence driven by energetic particle modes. The PI, Z. Lin, has been promoted to the Associate Professor with tenure at UCI.

  3. Protein Structure Suggests Role as Molecular Adapter

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

    Suggests Role as Molecular Adapter Print Wednesday, 24 June 2009 00:00 To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known...

  4. Protein Structure Suggests Role as Molecular Adapter

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

    Protein Structure Suggests Role as Molecular Adapter Protein Structure Suggests Role as Molecular Adapter Print Wednesday, 24 June 2009 00:00 To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known as the replisome. An essential step in replisome assembly is the loading of ring-shaped helicases (motor proteins) onto the separated strands of DNA. Dedicated ATP-fueled proteins regulate the loading; however, the mechanism by which these proteins

  5. Can we characterize turbulence in premixed flames?

    SciTech Connect (OSTI)

    Lipatnikov, A.N. [Department of Applied Mechanics, Chalmers University of Technology, Gothenburg, 412 96 (Sweden)

    2009-06-15

    Modeling of premixed turbulent combustion involves averaging reaction rates in turbulent flows. The focus of most approaches to resolving this problem has been placed on determining the dependence of the mean rate w of product creation on the laminar flame speed S{sub L}, the rms turbulence velocity u', etc. The goal of the present work is to draw attention to another issue: May the input quantity u{sup '} for a model of w= w(u'/S{sub L},..) be considered to be known? The point is that heat release substantially affects turbulence and, hence, turbulence characteristics in premixed flames should be modeled. However, standard moment methods for numerically simulating turbulent flows do not allow us to evaluate the true turbulence characteristics in a flame. For instance, the Reynolds stresses in premixed flames are affected not only by turbulence itself, but also by velocity jump across flamelets. A common way to resolving this problem consists of considering the Reynolds stresses conditioned on unburned (or burned) mixture to be the true turbulence characteristics. In the present paper, this widely accepted but never proved hypothesis is put into question, first, by considering simple model constant-density problems (flame motion in an oscillating one-dimensional laminar flow; flame stabilized in a periodic shear, one-dimensional, laminar flow; turbulent mixing). In all the cases, the magnitude of velocity fluctuations, calculated using the conditioned Reynolds stresses, is affected by the intermittency of reactants and products and, hence, is not the true rms velocity. Second, the above claim is further supported by comparing balance equations for the mean and conditioned Reynolds stresses. The conditioned Reynolds stresses do not characterize the true turbulence in flames, because conditional averaging cuts off flow regions characterized by either high or low velocities. (author)

  6. Quenching and anisotropy of hydromagnetic turbulent transport

    SciTech Connect (OSTI)

    Karak, Bidya Binay; Brandenburg, Axel; Rheinhardt, Matthias; Käpylä, Petri J.; Käpylä, Maarit J.

    2014-11-01

    Hydromagnetic turbulence affects the evolution of large-scale magnetic fields through mean-field effects like turbulent diffusion and the α effect. For stronger fields, these effects are usually suppressed or quenched, and additional anisotropies are introduced. Using different variants of the test-field method, we determine the quenching of the turbulent transport coefficients for the forced Roberts flow, isotropically forced non-helical turbulence, and rotating thermal convection. We see significant quenching only when the mean magnetic field is larger than the equipartition value of the turbulence. Expressing the magnetic field in terms of the equipartition value of the quenched flows, we obtain for the quenching exponents of the turbulent magnetic diffusivity about 1.3, 1.1, and 1.3 for Roberts flow, forced turbulence, and convection, respectively. However, when the magnetic field is expressed in terms of the equipartition value of the unquenched flows, these quenching exponents become about 4, 1.5, and 2.3, respectively. For the α effect, the exponent is about 1.3 for the Roberts flow and 2 for convection in the first case, but 4 and 3, respectively, in the second. In convection, the quenching of turbulent pumping follows the same power law as turbulent diffusion, while for the coefficient describing the Ω×J effect nearly the same quenching exponent is obtained as for α. For forced turbulence, turbulent diffusion proportional to the second derivative along the mean magnetic field is quenched much less, especially for larger values of the magnetic Reynolds number. However, we find that in corresponding axisymmetric mean-field dynamos with dominant toroidal field the quenched diffusion coefficients are the same for the poloidal and toroidal field constituents.

  7. Impulsively started incompressible turbulent jet

    SciTech Connect (OSTI)

    Witze, P O

    1980-10-01

    Hot-film anemometer measurements are presented for the centerline velocity of a suddenly started jet of air. The tip penetration of the jet is shown to be proportional to the square-root of time. A theoretical model is developed that assumes the transient jet can be characterized as a spherical vortex interacting with a steady-state jet. The model demonstrates that the ratio of nozzle radius to jet velocity defines a time constant that uniquely characterizes the behavior and similarity of impulsively started incompressible turbulent jets.

  8. Simulation of microtearing turbulence in national spherical torus experiment

    SciTech Connect (OSTI)

    Guttenfelder, W.; Kaye, S. M.; Bell, R. E.; Hammett, G. W.; LeBlanc, B. P.; Mikkelsen, D. R.; Ren, Y.; Candy, J.; Nevins, W. M.; Wang, E.; Zhang, J.; Crocker, N. A.; Yuh, H.

    2012-05-15

    Thermal energy confinement times in National Spherical Torus Experiment (NSTX) dimensionless parameter scans increase with decreasing collisionality. While ion thermal transport is neoclassical, the source of anomalous electron thermal transport in these discharges remains unclear, leading to considerable uncertainty when extrapolating to future spherical tokamak (ST) devices at much lower collisionality. Linear gyrokinetic simulations find microtearing modes to be unstable in high collisionality discharges. First non-linear gyrokinetic simulations of microtearing turbulence in NSTX show they can yield experimental levels of transport. Magnetic flutter is responsible for almost all the transport ({approx}98%), perturbed field line trajectories are globally stochastic, and a test particle stochastic transport model agrees to within 25% of the simulated transport. Most significantly, microtearing transport is predicted to increase with electron collisionality, consistent with the observed NSTX confinement scaling. While this suggests microtearing modes may be the source of electron thermal transport, the predictions are also very sensitive to electron temperature gradient, indicating the scaling of the instability threshold is important. In addition, microtearing turbulence is susceptible to suppression via sheared E Multiplication-Sign B flows as experimental values of E Multiplication-Sign B shear (comparable to the linear growth rates) dramatically reduce the transport below experimental values. Refinements in numerical resolution and physics model assumptions are expected to minimize the apparent discrepancy. In cases where the predicted transport is strong, calculations suggest that a proposed polarimetry diagnostic may be sensitive to the magnetic perturbations associated with the unique structure of microtearing turbulence.

  9. Spatial confinement of the IBEX Ribbon: A dominant turbulence mechanism

    SciTech Connect (OSTI)

    Isenberg, Philip A.

    2014-05-20

    The narrow ribbon of enhanced energetic neutral atom flux observed by the Interstellar Boundary Explorer spacecraft has prompted numerous ideas to explain its structure and properties. One of these ideas is the 'neutral solar wind' scenario, which identifies the source particles as pickup protons in the local interstellar medium originating in solar wind charge-exchange interactions. This scenario has been thought to require unrealistically weak pitch-angle scattering of the pickup protons to explain the narrow structure. Recently, Schwadron and McComas suggested that this structure could result from a spatial retention of the pickup protons, rather than from a restricted pitch-angle distribution. Here, we present a physically motivated, quantitative mechanism to produce such a spatial configuration. This mechanism is based on the 'dominant turbulence' assumption, which can be applied where the production of new pickup protons is slow, and has been used to successfully explain the level of turbulent heating observed in the outer solar wind. This formalism predicts a pickup isotropization process which adds or subtracts energy from the ambient turbulent fluctuations, depending on the initial pitch angle of the pickup protons. We show that a simple model of this process can yield a ribbon structure in qualitative agreement with the observations. The results of this simple model are not yet quantitatively satisfactory, but we suggest several improvements which may reduce the quantitative discrepancy.

  10. Turbulent electron transport in edge pedestal by electron temperature gradient turbulence

    SciTech Connect (OSTI)

    Singh, R.; Institute for Plasma Research, Bhat Gandhinagar, Gujarat 2382 428 ; Jhang, Hogun; Diamond, P. H.; CMTFO and CASS, University of California, San Diego 92093-0424, California

    2013-11-15

    We present a model for turbulent electron thermal transport at the edge pedestal in high (H)-mode plasmas based on electron temperature gradient (ETG) turbulence. A quasi-linear analysis of electrostatic toroidal ETG modes shows that both turbulent electron thermal diffusivity and hyper-resistivity exhibits the Ohkawa scaling in which the radial correlation length of turbulence becomes the order of electron skin depth. Combination of the Ohkawa scales and the plasma current dependence results in a novel confinement scaling inside the pedestal region. It is also shown that ETG turbulence induces a thermoelectric pinch, which may accelerate the density pedestal formation.

  11. PROTON KINETIC EFFECTS IN VLASOV AND SOLAR WIND TURBULENCE

    SciTech Connect (OSTI)

    Servidio, S.; Valentini, F.; Perrone, D.; Veltri, P.; Osman, K. T.; Chapman, S.; Califano, F.; Matthaeus, W. H.

    2014-02-01

    Kinetic plasma processes are investigated in the framework of solar wind turbulence, employing hybrid Vlasov-Maxwell (HVM) simulations. Statistical analysis of spacecraft observation data relates proton temperature anisotropy T /T {sub ∥} and parallel plasma beta β{sub ∥}, where subscripts refer to the ambient magnetic field direction. Here, this relationship is recovered using an ensemble of HVM simulations. By varying plasma parameters, such as plasma beta and fluctuation level, the simulations explore distinct regions of the parameter space given by T /T {sub ∥} and β{sub ∥}, similar to solar wind sub-datasets. Moreover, both simulation and solar wind data suggest that temperature anisotropy is not only associated with magnetic intermittent events, but also with gradient-type structures in the flow and in the density. This connection between non-Maxwellian kinetic effects and various types of intermittency may be a key point for understanding the complex nature of plasma turbulence.

  12. PDF Study of Round Turbulent Condensing Jet using GPU Hardware...

    Office of Scientific and Technical Information (OSTI)

    Conference: PDF Study of Round Turbulent Condensing Jet using GPU Hardware. Citation Details In-Document Search Title: PDF Study of Round Turbulent Condensing Jet using GPU ...

  13. Atomic Chemistry in Turbulent Media I: Effect of Atomic Cooling...

    Office of Scientific and Technical Information (OSTI)

    Atomic Chemistry in Turbulent Media I: Effect of Atomic Cooling Citation Details In-Document Search Title: Atomic Chemistry in Turbulent Media I: Effect of Atomic Cooling Authors: ...

  14. Turbulence may be key to "fast magnetic reconnection" mystery

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

    Turbulence may be key to "fast magnetic reconnection" mystery Turbulence may be key to "fast magnetic reconnection" mystery The new research could lead to better understanding of ...

  15. ASCR Workshop on Turbulent Flow Simulations at the Exascale:...

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

    ASCR Workshop on Turbulent Flow Simulations at the Exascale: Opportunities and Challenges ASCR Workshop on Turbulent Flow Simulations at the Exascale: Opportunities and Challenges...

  16. Implementation and Validation of the BHR Turbulence Model in...

    Office of Scientific and Technical Information (OSTI)

    Turbulence is an often studied and ubiquitous phenomenon in nature, and modeling its effects is essential in many practical applications. Specifically the behavior of turbulence in ...

  17. Stochastic models for turbulent reacting flows

    SciTech Connect (OSTI)

    Kerstein, A.

    1993-12-01

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

  18. Cyclone separator having boundary layer turbulence control

    DOE Patents [OSTI]

    Krishna, Coimbatore R.; Milau, Julius S.

    1985-01-01

    A cyclone separator including boundary layer turbulence control that is operable to prevent undue build-up of particulate material at selected critical areas on the separator walls, by selectively varying the fluid pressure at those areas to maintain the momentum of the vortex, thereby preventing particulate material from inducing turbulence in the boundary layer of the vortical fluid flow through the separator.

  19. Scaling laws in magnetized plasma turbulence

    SciTech Connect (OSTI)

    Boldyrev, Stanislav

    2015-06-28

    Interactions of plasma motion with magnetic fields occur in nature and in the laboratory in an impressively broad range of scales, from megaparsecs in astrophysical systems to centimeters in fusion devices. The fact that such an enormous array of phenomena can be effectively studied lies in the existence of fundamental scaling laws in plasma turbulence, which allow one to scale the results of analytic and numerical modeling to the sized of galaxies, velocities of supernovae explosions, or magnetic fields in fusion devices. Magnetohydrodynamics (MHD) provides the simplest framework for describing magnetic plasma turbulence. Recently, a number of new features of MHD turbulence have been discovered and an impressive array of thought-provoking phenomenological theories have been put forward. However, these theories have conflicting predictions, and the currently available numerical simulations are not able to resolve the contradictions. MHD turbulence exhibits a variety of regimes unusual in regular hydrodynamic turbulence. Depending on the strength of the guide magnetic field it can be dominated by weakly interacting Alfv\\'en waves or strongly interacting wave packets. At small scales such turbulence is locally anisotropic and imbalanced (cross-helical). In a stark contrast with hydrodynamic turbulence, which tends to ``forget'' global constrains and become uniform and isotropic at small scales, MHD turbulence becomes progressively more anisotropic and unbalanced at small scales. Magnetic field plays a fundamental role in turbulent dynamics. Even when such a field is not imposed by external sources, it is self-consistently generated by the magnetic dynamo action. This project aims at a comprehensive study of universal regimes of magnetic plasma turbulence, combining the modern analytic approaches with the state of the art numerical simulations. The proposed study focuses on the three topics: weak MHD turbulence, which is relevant for laboratory devices, the solar

  20. Numerical simulations of strong incompressible magnetohydrodynamic turbulence

    SciTech Connect (OSTI)

    Mason, J.; Cattaneo, F.; Perez, J. C.; Boldyrev, S.

    2012-05-15

    Magnetised plasma turbulence pervades the universe and is likely to play an important role in a variety of astrophysical settings. Magnetohydrodynamics (MHD) provides the simplest theoretical framework in which phenomenological models for the turbulent dynamics can be built. Numerical simulations of MHD turbulence are widely used to guide and test the theoretical predictions; however, simulating MHD turbulence and accurately measuring its scaling properties is far from straightforward. Computational power limits the calculations to moderate Reynolds numbers and often simplifying assumptions are made in order that a wider range of scales can be accessed. After describing the theoretical predictions and the numerical approaches that are often employed in studying strong incompressible MHD turbulence, we present the findings of a series of high-resolution direct numerical simulations. We discuss the effects that insufficiencies in the computational approach can have on the solution and its physical interpretation.

  1. Protein Structure Suggests Role as Molecular Adapter

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

    Protein Structure Suggests Role as Molecular Adapter Print To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known as the replisome. An essential step in replisome assembly is the loading of ring-shaped helicases (motor proteins) onto the separated strands of DNA. Dedicated ATP-fueled proteins regulate the loading; however, the mechanism by which these proteins recruit and deposit helicases has remained unclear. To better understand this

  2. Protein Structure Suggests Role as Molecular Adapter

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

    Protein Structure Suggests Role as Molecular Adapter Print To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known as the replisome. An essential step in replisome assembly is the loading of ring-shaped helicases (motor proteins) onto the separated strands of DNA. Dedicated ATP-fueled proteins regulate the loading; however, the mechanism by which these proteins recruit and deposit helicases has remained unclear. To better understand this

  3. Protein Structure Suggests Role as Molecular Adapter

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

    Protein Structure Suggests Role as Molecular Adapter Print To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known as the replisome. An essential step in replisome assembly is the loading of ring-shaped helicases (motor proteins) onto the separated strands of DNA. Dedicated ATP-fueled proteins regulate the loading; however, the mechanism by which these proteins recruit and deposit helicases has remained unclear. To better understand this

  4. Protein Structure Suggests Role as Molecular Adapter

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

    Protein Structure Suggests Role as Molecular Adapter Print To split and copy DNA during replication, all cellular organisms use a multicomponent molecular machine known as the replisome. An essential step in replisome assembly is the loading of ring-shaped helicases (motor proteins) onto the separated strands of DNA. Dedicated ATP-fueled proteins regulate the loading; however, the mechanism by which these proteins recruit and deposit helicases has remained unclear. To better understand this

  5. The high-energy-density counterpropagating shear experiment and turbulent self-heating

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

    Doss, F. W.; Fincke, J. R.; Loomis, E. N.; Welser-Sherrill, L.; Flippo, K. A.

    2013-12-06

    The counterpropagating shear experiment has previously demonstrated the ability to create regions of shockdriven shear, balanced symmetrically in pressure and experiencing minimal net drift. This allows for the creation of a high-Mach-number high-energy-density shear environment. New data from the counterpropagating shear campaign is presented, and both hydrocode modeling and theoretical analysis in the context of a Reynolds-averaged-Navier-Stokes model suggest turbulent dissipation of energy from the supersonic flow bounding the layer is a significant driver in its expansion. A theoretical minimum shear flow Mach number threshold is suggested for substantial thermal-turbulence coupling.

  6. Turbulence-chemistry interactions in reacting flows

    SciTech Connect (OSTI)

    Barlow, R.S.; Carter, C.D.

    1993-12-01

    Interactions between turbulence and chemistry in nonpremixed flames are investigated through multiscalar measurements. Simultaneous point measurements of major species, NO, OH, temperature, and mixture fraction are obtained by combining spontaneous Raman scattering, Rayleigh scattering, and laser-induced fluorescence (LIF). NO and OH fluorescence signals are converted to quantitative concentrations by applying shot-to-shot corrections for local variations of the Boltzmann fraction and collisional quenching rate. These measurements of instantaneous thermochemical states in turbulent flames provide insights into the fundamental nature of turbulence-chemistry interactions. The measurements also constitute a unique data base for evaluation and refinement of turbulent combustion models. Experimental work during the past year has focused on three areas: (1) investigation of the effects of differential molecular diffusion in turbulent combustion: (2) experiments on the effects of Halon CF{sub 3}Br, a fire retardant, on the structure of turbulent flames of CH{sub 4} and CO/H{sub 2}/N{sub 2}; and (3) experiments on NO formation in turbulent hydrogen jet flames.

  7. Water in protoplanetary disks: Deuteration and turbulent mixing

    SciTech Connect (OSTI)

    Furuya, Kenji; Aikawa, Yuri; Nomura, Hideko; Hersant, Franck; Wakelam, Valentine

    2013-12-10

    We investigate water and deuterated water chemistry in turbulent protoplanetary disks. Chemical rate equations are solved with the diffusion term, mimicking turbulent mixing in a vertical direction. Water near the midplane is transported to the disk atmosphere by turbulence and is destroyed by photoreactions to produce atomic oxygen, while the atomic oxygen is transported to the midplane and reforms water and/or other molecules. We find that this cycle significantly decreases column densities of water ice at r ? 30 AU, where dust temperatures are too high to reform water ice effectively. The radial extent of such region depends on the desorption energy of atomic hydrogen. Our model indicates that water ice could be deficient even outside the sublimation radius. Outside this radius, the cycle decreases the deuterium-to-hydrogen (D/H) ratio of water ice from ?2 10{sup 2}, which is set by the collapsing core model, to 10{sup 4}-10{sup 2} in 10{sup 6} yr, without significantly decreasing the water ice column density. The resultant D/H ratios depend on the strength of mixing and the radial distance from the central star. Our finding suggests that the D/H ratio of cometary water (?10{sup 4}) could be established (i.e., cometary water could be formed) in the solar nebula, even if the D/H ratio of water ice delivered to the disk was very high (?10{sup 2}).

  8. Office of Chief Financial Officer

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

    6 DOE/CF-0101 Volume 6 Power Marketing Administrations Southeastern Power Administration Southwestern Power Administration Western Area Power Administration Bonneville Power Administration Department of Energy FY 2015 Congressional Budget Request March 2014 Office of Chief Financial Officer Volume 6 DOE/CF-0101 Volume 6 Power Marketing Administrations Southeastern Power Administration Southwestern Power Administration Western Area Power Administration Bonneville Power Administration Printed with

  9. Office of Chief Financial Officer

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

    6 DOE/CF-0112 Volume 6 Power Marketing Administrations Southeastern Power Administration Southwestern Power Administration Western Area Power Administration Bonneville Power Administration Department of Energy FY 2016 Congressional Budget Request February 2015 Office of Chief Financial Officer Volume 6 DOE/CF-0112 Volume 6 Power Marketing Administrations Southeastern Power Administration Southwestern Power Administration Western Area Power Administration Bonneville Power Administration Printed

  10. Evaluation of the Effects of Turbulence on the Behavior of Migratory Fish, 2002 Final Report.

    SciTech Connect (OSTI)

    Odeh, Mufeed.

    2002-03-01

    The fundamental influence of fluid dynamics on aquatic organisms is receiving increasing attention among aquatic ecologists. For example, the importance of turbulence to ocean plankton has long been a subject of investigation (Peters and Redondo 1997). More recently, studies have begun to emerge that explicitly consider the effects of shear and turbulence on freshwater invertebrates (Statzner et al. 1988; Hart et al. 1996) and fishes (Pavlov et al. 1994, 1995). Hydraulic shear stress and turbulence are interdependent natural hydraulic phenomena that are important to fish, and consequently it is important to develop an understanding of how fish sense, react to, and perhaps utilize these phenomena under normal river flows. The appropriate reaction to turbulence may promote movement of migratory fish (Coutant 1998) or prevent displacement of resident fish. It has been suggested that one of the adverse effects of flow regulation by hydroelectric projects is the reduction of normal turbulence, particularly in the headwaters of reservoirs, which can lead to disorientation and slowing of migration (Williams et al. 1996; Coutant et al. 1997; Coutant 1998). On the other hand, greatly elevated levels of shear and turbulence may be injurious to fish; injuries can range from removal of the mucous layer on the body surface to descaling to torn opercula, popped eyes, and decapitation (Neitzel et al. 2000a,b). Damaging levels of fluid stress, such turbulence, can occur in a variety of circumstances in both natural and man-made environments. This report discusses the effects of shear stress and turbulence on fish, with an emphasis on potentially damaging levels in man-made environments. It defines these phenomena, describes studies that have been conducted to understand their effects, and identifies gaps in our knowledge. In particular, this report reviews the available information on the levels of turbulence that can occur within hydroelectric power plants, and the associated

  11. Financial and Activity Report - April 02, 2010 | Department of...

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

    4022010.xls More Documents & Publications Financial and Activity Report - July 16, 2010 Financial and Activity Report - February 12, 2010 Financial and Activity Report - February ...

  12. Engaging Financial Institution Partners Transcript.doc | Department...

    Office of Environmental Management (EM)

    Engaging Financial Institution Partners Transcript.doc Engaging Financial Institution Partners Transcript.doc Engaging Financial Institution Partners Transcript.doc Microsoft ...

  13. Processing Financial Assistance Actions in STRIPES

    Broader source: Energy.gov [DOE]

    The attached booklet is a companion to the STRIPES Financial Assistance Desk Guide. It provides tips on processing financial assistance actions in STRIPES. The booklet will be available in the...

  14. American Recovery and Reinvestment Act, Financial Assistance...

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

    American Recovery and Reinvestment Act, Financial Assistance Award: 212 Degrees Consulting, LLC, Las Vegas, Nevada. Award No. DE-FC36-10GO10589, Notice of Financial Assistance ...

  15. CHAPTER 7 FINANCIAL MANAGEMENT | Department of Energy

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

    CHAPTER 7 FINANCIAL MANAGEMENT CHAPTER 7 FINANCIAL MANAGEMENT 5-25-00)\� (44.51 KB) More Documents & Publications Microsoft Word - Appendix A_2006_Jun COMMENTS� CHAPTER 3

  16. Annual Confidential Financial Disclosure Report (OGE 450)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1999-10-01

    This Notice addresses Executive Branch confidential financial disclosure requirements. These requirements apply to career GS (GM) employees.

  17. Financial Program Management for Continuous Improvement

    Office of Energy Efficiency and Renewable Energy (EERE)

    This webinar, held on March 16, 2011, focuses on ways to improve financial programs and discusses strategies for continuous improvements.

  18. Annual Confidential Financial Disclosure Report (OGE 450)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2000-10-01

    This Notice addresses Executive Branch confidential financial disclosure requirements. These requirements apply to career GS (GM) employees.

  19. The Financial Reporting System Public Data

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    several physicalfinancial relationships. Description These files contain disclosure-free aggregate data from the Energy Information Administration's Financial Reporting System...

  20. Agency Financial Reports | Department of Energy

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

    Agency Financial Reports Agency Financial Reports The Reports Consolidation Act of 2000 authorizes Federal agencies, with the Office of Management and Budget's (OMB) concurrence, to consolidate various reports in order to provide performance, financial and related information in a more meaningful and useful format. The Department of Energy (Department or DOE) has chosen an alternative reporting to the consolidated Performance and Accountability Report and instead, produces an Agency Financial

  1. Transportation Efficiency Financial Incentives and Program Resources |

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

    Department of Energy Financial Incentives and Program Resources Transportation Efficiency Financial Incentives and Program Resources While transportation efficiency policies are often implemented under local governments, national and state programs can play supportive roles in reducing vehile miles traveled. Find financial incentives and program resources below. DOE Resource Clean Cities: Related Financial Opportunities. Other Resource Improving Travel Efficiency at the Local Level: An ACEEE

  2. Project Management Expectations for Financial Assistance Activities

    Broader source: Energy.gov [DOE]

    Memo on Project Management Expectations for Financial Assistance Activities from David K. Garman, dated June 23, 2006.

  3. Office of the Chief Financial Officer

    Broader source: Energy.gov [DOE]

    Welcome to the U.S. Department of Energy, Office of the Chief Financial Officer. The mission of the Office of the Chief Financial Officer is to assure the effective management and financial integrity of Department of Energy programs, activities, and resources by developing and implementing and monitoring Department-wide policies and systems in the areas of budget administration, program analysis and evaluation, finance and accounting, internal controls, corporate financial systems, and strategic planning.

  4. Supercomputers Capture Turbulence in the Solar Wind

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

    the solar wind occurring down to electron scales. This is a phenomenon common in fluid dynamics-turbulent energy ... he created tools to filter out the "noise" in the datasets. ...

  5. TIDAL TURBULENCE SPECTRA FROM A COMPLIANT MOORING

    SciTech Connect (OSTI)

    Thomson, Jim; Kilcher, Levi; Richmond, Marshall C.; Talbert, Joe; deKlerk, Alex; Polagye, Brian; Guerra, Maricarmen; Cienfuegos, Rodrigo

    2013-06-13

    A compliant mooring to collect high frequency turbulence data at a tidal energy site is evaluated in a series of short demon- stration deployments. The Tidal Turbulence Mooring (TTM) improves upon recent bottom-mounted approaches by suspend- ing Acoustic Doppler Velocimeters (ADVs) at mid-water depths (which are more relevant to tidal turbines). The ADV turbulence data are superior to Acoustic Doppler Current Profiler (ADCP) data, but are subject to motion contamination when suspended on a mooring in strong currents. In this demonstration, passive stabilization is shown to be sufficient for acquiring bulk statistics of the turbulence, without motion correction. With motion cor- rection (post-processing), data quality is further improved; the relative merits of direct and spectral motion correction are dis- cussed.

  6. Financial Institution Partnership Program - Commercial Technology Renewable

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

    Energy Generation Projects Issued: October 7, 2009 | Department of Energy Financial Institution Partnership Program - Commercial Technology Renewable Energy Generation Projects Issued: October 7, 2009 Financial Institution Partnership Program - Commercial Technology Renewable Energy Generation Projects Issued: October 7, 2009 Financial Institution Partnership Program - Commercial Technology Renewable Energy Generation Projects Issued: October 7, 2009 (498.91 KB) Fixed Rate Agreement (110.33

  7. Confidential Financial Disclosure Report | Department of Energy

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

    Confidential Financial Disclosure Report Confidential Financial Disclosure Report Confidential Financial Disclosure Report (263.01 KB) More Documents & Publications Restrictions on Federal Employees Acceptance of Gifts DATA REPORT ON SPOUSE/COHABITANT DOE Advisory Committee Members' Ethics and Conflict of Interest Guidance

  8. Direct numerical simulation of turbulent reacting flows

    SciTech Connect (OSTI)

    Chen, J.H.

    1993-12-01

    The development of turbulent combustion models that reflect some of the most important characteristics of turbulent reacting flows requires knowledge about the behavior of key quantities in well defined combustion regimes. In turbulent flames, the coupling between the turbulence and the chemistry is so strong in certain regimes that is is very difficult to isolate the role played by one individual phenomenon. Direct numerical simulation (DNS) is an extremely useful tool to study in detail the turbulence-chemistry interactions in certain well defined regimes. Globally, non-premixed flames are controlled by two limiting cases: the fast chemistry limit, where the turbulent fluctuations. In between these two limits, finite-rate chemical effects are important and the turbulence interacts strongly with the chemical processes. This regime is important because industrial burners operate in regimes in which, locally the flame undergoes extinction, or is at least in some nonequilibrium condition. Furthermore, these nonequilibrium conditions strongly influence the production of pollutants. To quantify the finite-rate chemistry effect, direct numerical simulations are performed to study the interaction between an initially laminar non-premixed flame and a three-dimensional field of homogeneous isotropic decaying turbulence. Emphasis is placed on the dynamics of extinction and on transient effects on the fine scale mixing process. Differential molecular diffusion among species is also examined with this approach, both for nonreacting and reacting situations. To address the problem of large-scale mixing and to examine the effects of mean shear, efforts are underway to perform large eddy simulations of round three-dimensional jets.

  9. Edge turbulence and transport: Text and ATF modeling

    SciTech Connect (OSTI)

    Ritz, C.P.; Rhodes, T.L.; Lin, H.; Rowan, W.L.; Bengtson, R.; Wootton, A.J. . Fusion Research Center); Carreras, B.A.; Leboeuf, J.N.; Lee, D.K.; Harris, J.; Hidalgo, C.; Bell, J.D.; Holmes, J.A.; Isler, R.; Lynch, V.E.; Uckan, T. ); Diamond, P.H.; Ware, A.S. ); Thayer, D.R. (Science Applications Inter

    1990-01-01

    We present experimental results on edge turbulence and transport from the tokamak TEXT and the torsatron ATF. The measured electrostatic fluctuations can explain the edge transport of particles and energy. Certain drive (radiation) and stabilizing (velocity shear) terms are suggested by the results. The experimental fluctuation levels and spectral widths can be reproduced by considering the nonlinear evolution of the reduced MHD equations, incorporating a thermal drive from line radiation. In the tokamak limit (with toroidal electric field) the model corresponds to the resistivity gradient mode, while in the currentless torsatron or stellarator limit it corresponds to a thermally driven drift wave.

  10. New perspectives on superparameterization for geophysical turbulence

    SciTech Connect (OSTI)

    Majda, Andrew J.; Grooms, Ian

    2014-08-15

    This is a research expository paper regarding superparameterization, a class of multi-scale numerical methods designed to cope with the intermittent multi-scale effects of inhomogeneous geophysical turbulence where energy often inverse-cascades from the unresolved scales to the large scales through the effects of waves, jets, vortices, and latent heat release from moist processes. Original as well as sparse spacetime superparameterization algorithms are discussed for the important case of moist atmospheric convection including the role of multi-scale asymptotic methods in providing self-consistent constraints on superparameterization algorithms and related deterministic and stochastic multi-cloud parameterizations. Test models for the statistical numerical analysis of superparameterization algorithms are discussed both to elucidate the performance of the basic algorithms and to test their potential role in efficient multi-scale data assimilation. The very recent development of grid-free seamless stochastic superparameterization methods for geophysical turbulence appropriate for eddy-permitting mesoscale ocean turbulence is presented here including a general formulation and illustrative applications to two-layer quasigeostrophic turbulence, and another difficult test case involving one-dimensional models of dispersive wave turbulence. This last test case has randomly generated solitons as coherent structures which collapse and radiate wave energy back to the larger scales, resulting in strong direct and inverse turbulent energy cascades.

  11. Reaction and diffusion in turbulent combustion

    SciTech Connect (OSTI)

    Pope, S.B.

    1993-12-01

    The motivation for this project is the need to obtain a better quantitative understanding of the technologically-important phenomenon of turbulent combustion. In nearly all applications in which fuel is burned-for example, fossil-fuel power plants, furnaces, gas-turbines and internal-combustion engines-the combustion takes place in a turbulent flow. Designers continually demand more quantitative information about this phenomenon-in the form of turbulent combustion models-so that they can design equipment with increased efficiency and decreased environmental impact. For some time the PI has been developing a class of turbulent combustion models known as PDF methods. These methods have the important virtue that both convection and reaction can be treated without turbulence-modelling assumptions. However, a mixing model is required to account for the effects of molecular diffusion. Currently, the available mixing models are known to have some significant defects. The major motivation of the project is to seek a better understanding of molecular diffusion in turbulent reactive flows, and hence to develop a better mixing model.

  12. Financial and Activity Report - February 12, 2010 | Department of Energy

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

    2, 2010 Financial and Activity Report - February 12, 2010 DOE_Financial_and_Activity_Report_02122010.xls (2.95 MB) More Documents & Publications Financial and Activity Report - July 16, 2010 Financial and Activity Report - February 19

  13. Financial and Activity Report - February 19, 2010 | Department of Energy

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

    9, 2010 Financial and Activity Report - February 19, 2010 DOE_Financial_and_Activity_Report_02192010.xls (2.95 MB) More Documents & Publications Financial and Activity Report - July 16, 2010 Financial and Activity Report - February 12

  14. Refinancing from a Financier's Perspective

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

    Refinancing from a Financier's Perspective Hosted by: FEDERAL UTILITY PARTNERSHIP WORKING GROUP SEMINAR November 5-6, 2014 Cape Canaveral. Florida Why Invest in UESC Projects? * Long Term Financing * Low Risk Profile * Good Historical Experience * Smooth Administration * Low History of Prepayment Federal Utility Partnership Working Group November 5-6, 2014 Cape Canaveral, FL Do the Stars Align for Re-Fi? * Not Contractually Available * Investors in for the Long Term * Additional Administration *

  15. Consolidated Financial Statements | Department of Energy

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

    Reports » Consolidated Financial Statements Consolidated Financial Statements May 6, 2016 Audit Report: OAI-FS-16-09 Management Letter on the Western Federal Power System's Fiscal Year 2015 Financial Statement Audit April 21, 2016 AUDIT REPORT: OAI-FS-16-08 The Department of Energy's Improper Payment Reporting in the Fiscal Year 2015 Agency Financial Report April 6, 2016 Audit Report: OAI-FS-16-07 Western Federal Power System's Fiscal Year 2015 Financial Statement Audit January 15, 2016 Audit

  16. Office of the Chief Financial Officer .:. Lawrence Berkeley National...

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

    Office of the Chief Financial Officer Office of the Cheif Financial Officer Lawrence Berkeley Naitonal Laboratory Department of Energy Quicklinks: ---...

  17. Comparison between kinetic-ballooning-mode-driven turbulence and ion-temperature-gradient-driven turbulence

    SciTech Connect (OSTI)

    Maeyama, S. Nakata, M.; Miyato, N.; Yagi, M.; Ishizawa, A.; Watanabe, T.-H.; Idomura, Y.

    2014-05-15

    Electromagnetic turbulence driven by kinetic ballooning modes (KBMs) in high-? plasma is investigated based on the local gyrokinetic model. Analysis of turbulent fluxes, norms, and phases of fluctuations shows that KBM turbulence gives narrower spectra and smaller phase factors than those in ion-temperature-gradient (ITG)-driven turbulence. This leads to the smaller transport fluxes in KBM turbulence than those in ITG turbulence even when they have similar linear growth rates. From the analysis of the entropy balance relation, it is found that the entropy transfer from ions to electrons through the field-particle interactions mainly drives electron perturbations, which creates radial twisted modes by rapid parallel motions of electrons in a sheared magnetic geometry. The nonlinear coupling between the dominant unstable mode and its twisted modes is important for the saturation of KBM turbulence, in contrast to the importance of zonal flow shearing in ITG turbulence. The coupling depends on the flux-tube domain with the one-poloidal-turn parallel length and on the torus periodicity constraint.

  18. Financial and Activity Report - October 9, 2009 | Department of Energy

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

    Financial and Activity Report - October 9, 2009 Financial and Activity Report - October 9, 2009 DOE_Financial_and_Activity_Report_10092009.xls (154.5 KB) More Documents & Publications Financial and Activity Report - July 16, 2010 Financial and Activity Report - February 12, 2010 Financial and Activity Report - February 19, 2010

  19. Nonlinear and linear timescales near kinetic scales in solar wind turbulence

    SciTech Connect (OSTI)

    Matthaeus, W. H.; Wan, M.; Shay, M. A.; Oughton, S.; Osman, K. T.; Chapman, S. C.; Servidio, S.; Valentini, F.; Gary, S. P.; Roytershteyn, V.; Karimabadi, H.

    2014-08-01

    The application of linear kinetic treatments to plasma waves, damping, and instability requires favorable inequalities between the associated linear timescales and timescales for nonlinear (e.g., turbulence) evolution. In the solar wind these two types of timescales may be directly compared using standard Kolmogorov-style analysis and observational data. The estimated local (in scale) nonlinear magnetohydrodynamic cascade times, evaluated as relevant kinetic scales are approached, remain slower than the cyclotron period, but comparable to or faster than the typical timescales of instabilities, anisotropic waves, and wave damping. The variation with length scale of the turbulence timescales is supported by observations and simulations. On this basis the use of linear theory—which assumes constant parameters to calculate the associated kinetic rates—may be questioned. It is suggested that the product of proton gyrofrequency and nonlinear time at the ion gyroscales provides a simple measure of turbulence influence on proton kinetic behavior.

  20. Fluctuation characteristics and transport properties of collisionless trapped electron mode turbulence

    SciTech Connect (OSTI)

    Xiao Yong; Holod, Ihor; Zhang Wenlu; Lin Zhihong [Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States); Klasky, Scott [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

    2010-02-15

    The collisionless trapped electron mode turbulence is investigated by global gyrokinetic particle simulation. The zonal flow dominated by low frequency and short wavelength acts as a very important saturation mechanism. The turbulent eddies are mostly microscopic, but with a significant portion in the mesoscale. The ion heat transport is found to be diffusive and follows the local radial profile of the turbulence intensity. However, the electron heat transport demonstrates some nondiffusive features and only follows the global profile of the turbulence intensity. The nondiffusive features of the electron heat transport is further confirmed by nonlognormal statistics of the flux-surface-averaged electron heat flux. The radial and time correlation functions are calculated to obtain the radial correlation length and autocorrelation time. Characteristic time scale analysis shows that the zonal flow shearing time and eddy turnover time are very close to the effective decorrelation time, which suggests that the trapped electrons move with the fluid eddies. The fluidlike behaviors of the trapped electrons and the persistence of the mesoscale eddies contribute to the transition of the electron turbulent transport from gyro-Bohm scaling to Bohm scaling when the device size decreases.

  1. THE INFLUENCE OF INTERMITTENCY ON THE SPECTRAL ANISOTROPY OF SOLAR WIND TURBULENCE

    SciTech Connect (OSTI)

    Wang, Xin; Tu, Chuanyi; He, Jiansen; Wang, Linghua; Marsch, Eckart

    2014-03-01

    The relation between the intermittency and the anisotropy of the power spectrum in the solar wind turbulence is studied by applying the wavelet technique to the magnetic field and flow velocity data measured by the WIND spacecraft. It is found that when the intermittency is removed from the turbulence, the spectral indices of the power spectra of the field and velocity turn out to be independent of the angle ?{sub RB} between the direction of the local scale-dependent background magnetic field and the heliocentric direction. The spectral index becomes 1.63 0.02 for magnetic field fluctuations and 1.56 0.02 for velocity fluctuations. These results may suggest that the recently found spectral anisotropy of solar wind power spectra in the inertial range could result from turbulence intermittency. As a consequence, a new concept is here proposed of an intermittency-associated sub-range of the inertial domain adjacent to the dissipation range. Since spectral anisotropy was previously explained as evidence for the presence of a ''critical balance'' type turbulent cascade, and also for the existence of kinetic Alfvn waves, this new finding may stimulate fresh thoughts on how to analyze and interpret solar wind turbulence and the associated heating.

  2. Transported PDF Modeling of Nonpremixed Turbulent CO/H-2/N-2 Jet Flames

    SciTech Connect (OSTI)

    Zhao, xinyu; Haworth, D. C.; Huckaby, E. David

    2012-01-01

    Turbulent CO/H{sub 2}/N{sub 2} (syngas) flames are simulated using a transported composition probability density function (PDF) method. A consistent hybrid Lagrangian particle/Eulerian mesh algorithm is used to solve the modeled PDF transport equation. The model includes standard k? turbulence, gradient transport for scalars, and Euclidean minimum spanning tree (EMST) mixing. Sensitivities of model results to variations in the turbulence model, the treatment of radiation heat transfer, the choice of chemical mechanism, and the PDF mixing model are explored. A baseline model reproduces the measured mean and rms temperature, major species, and minor species profiles reasonably well, and captures the scaling that is observed in the experiments. Both our results and the literature suggest that further improvements can be realized with adjustments in the turbulence model, the radiation heat transfer model, and the chemical mechanism. Although radiation effects are relatively small in these flames, consideration of radiation is important for accurate NO prediction. Chemical mechanisms that have been developed specifically for fuels with high concentrations of CO and H{sub 2} perform better than a methane mechanism that was not designed for this purpose. It is important to account explicitly for turbulencechemistry interactions, although the details of the mixing model do not make a large difference in the results, within reasonable limits.

  3. Flux-driven simulations of turbulence collapse

    SciTech Connect (OSTI)

    Park, G. Y.; Kim, S. S.; Jhang, Hogun; Rhee, T.; Diamond, P. H.; Xu, X. Q.

    2015-03-15

    Using three-dimensional nonlinear simulations of tokamak turbulence, we show that an edge transport barrier (ETB) forms naturally once input power exceeds a threshold value. Profiles, turbulence-driven flows, and neoclassical coefficients are evolved self-consistently. A slow power ramp-up simulation shows that ETB transition is triggered by the turbulence-driven flows via an intermediate phase which involves coherent oscillation of turbulence intensity and E×B flow shear. A novel observation of the evolution is that the turbulence collapses and the ETB transition begins when R{sub T} > 1 at t = t{sub R} (R{sub T}: normalized Reynolds power), while the conventional transition criterion (ω{sub E×B}>γ{sub lin} where ω{sub E×B} denotes mean flow shear) is satisfied only after t = t{sub C} ( >t{sub R}), when the mean flow shear grows due to positive feedback.

  4. NO concentration imaging in turbulent nonpremixed flames

    SciTech Connect (OSTI)

    Schefer, R.W.

    1993-12-01

    The importance of NO as a pollutant species is well known. An understanding of the formation characteristics of NO in turbulent hydrocarbon flames is important to both the desired reduction of pollutant emissions and the validation of proposed models for turbulent reacting flows. Of particular interest is the relationship between NO formation and the local flame zone, in which the fuel is oxidized and primary heat release occurs. Planar imaging of NO provides the multipoint statistics needed to relate NO formation to the both the flame zone and the local turbulence characteristics. Planar imaging of NO has been demonstrated in turbulent flames where NO was seeded into the flow at high concentrations (2000 ppm) to determine the gas temperature distribution. The NO concentrations in these experiments were significantly higher than those expected in typical hydrocarbon-air flames, which require a much lower detectability limit for NO measurements. An imaging technique based on laser-induced fluorescence with sufficient sensitivity to study the NO formation mechanism in the stabilization region of turbulent lifted-jet methane flames.

  5. THE FATE OF PLANETESIMALS IN TURBULENT DISKS WITH DEAD ZONES. I. THE TURBULENT STIRRING RECIPE

    SciTech Connect (OSTI)

    Okuzumi, Satoshi [Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551 (Japan); Ormel, Chris W., E-mail: okuzumi@geo.titech.ac.jp [Astronomy Department, University of California, Berkeley, CA 94720 (United States)

    2013-07-01

    Turbulence in protoplanetary disks affects planet formation in many ways. While small dust particles are mainly affected by the aerodynamical coupling with turbulent gas velocity fields, planetesimals and larger bodies are more affected by gravitational interaction with gas density fluctuations. For the latter process, a number of numerical simulations have been performed in recent years, but a fully parameter-independent understanding has not been yet established. In this study, we present simple scaling relations for the planetesimal stirring rate in turbulence driven by magnetorotational instability (MRI), taking into account the stabilization of MRI due to ohmic resistivity. We begin with order-of-magnitude estimates of the turbulence-induced gravitational force acting on solid bodies and associated diffusion coefficients for their orbital elements. We then test the predicted scaling relations using the results of recent ohmic-resistive MHD simulations by Gressel et al. We find that these relations successfully explain the simulation results if we properly fix order-of-unity uncertainties within the estimates. We also update the saturation predictor for the density fluctuation amplitude in MRI-driven turbulence originally proposed by Okuzumi and Hirose. Combination of the scaling relations and saturation predictor allows us to know how the turbulent stirring rate of planetesimals depends on disk parameters such as the gas column density, distance from the central star, vertical resistivity distribution, and net vertical magnetic flux. In Paper II, we apply our recipe to planetesimal accretion to discuss its viability in turbulent disks.

  6. A signature for turbulence driven magnetic islands

    SciTech Connect (OSTI)

    Agullo, O.; Muraglia, M.; Benkadda, S.; Poyé, A.; Yagi, M.; Garbet, X.; Sen, A.

    2014-09-15

    We investigate the properties of magnetic islands arising from tearing instabilities that are driven by an interchange turbulence. We find that such islands possess a specific signature that permits an identification of their origin. We demonstrate that the persistence of a small scale turbulence maintains a mean pressure profile, whose characteristics makes it possible to discriminate between turbulence driven islands from those arising due to an unfavourable plasma current density gradient. We also find that the island poloidal turnover time, in the steady state, is independent of the levels of the interchange and tearing energy sources. Finally, we show that a mixing length approach is adequate to make theoretical predictions concerning island flattening in the island rotation frame.

  7. Boundary Plasma Turbulence Simulations for Tokamaks

    SciTech Connect (OSTI)

    Xu, X; Umansky, M; Dudson, B; Snyder, P

    2008-05-15

    The boundary plasma turbulence code BOUT models tokamak boundary-plasma turbulence in a realistic divertor geometry using modified Braginskii equations for plasma vorticity, density (ni), electron and ion temperature (T{sub e}; T{sub i}) and parallel momenta. The BOUT code solves for the plasma fluid equations in a three dimensional (3D) toroidal segment (or a toroidal wedge), including the region somewhat inside the separatrix and extending into the scrape-off layer; the private flux region is also included. In this paper, a description is given of the sophisticated physical models, innovative numerical algorithms, and modern software design used to simulate edge-plasmas in magnetic fusion energy devices. The BOUT code's unique capabilities and functionality are exemplified via simulations of the impact of plasma density on tokamak edge turbulence and blob dynamics.

  8. Turbulent burning rates of methane and methane-hydrogen mixtures

    SciTech Connect (OSTI)

    Fairweather, M. [School of Process, Environmental and Materials Engineering, University of Leeds, Leeds LS2 9JT (United Kingdom); Ormsby, M.P.; Sheppard, C.G.W. [School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT (United Kingdom); Woolley, R. [Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD (United Kingdom)

    2009-04-15

    Methane and methane-hydrogen (10%, 20% and 50% hydrogen by volume) mixtures have been ignited in a fan stirred bomb in turbulence and filmed using high speed cine schlieren imaging. Measurements were performed at 0.1 MPa (absolute) and 360 K. A turbulent burning velocity was determined for a range of turbulence velocities and equivalence ratios. Experimental laminar burning velocities and Markstein numbers were also derived. For all fuels the turbulent burning velocity increased with turbulence velocity. The addition of hydrogen generally resulted in increased turbulent and laminar burning velocity and decreased Markstein number. Those flames that were less sensitive to stretch (lower Markstein number) burned faster under turbulent conditions, especially as the turbulence levels were increased, compared to stretch-sensitive (high Markstein number) flames. (author)

  9. Statistical theory of turbulent incompressible multimaterial flow

    SciTech Connect (OSTI)

    Kashiwa, B.

    1987-10-01

    Interpenetrating motion of incompressible materials is considered. ''Turbulence'' is defined as any deviation from the mean motion. Accordingly a nominally stationary fluid will exhibit turbulent fluctuations due to a single, slowly moving sphere. Mean conservation equations for interpenetrating materials in arbitrary proportions are derived using an ensemble averaging procedure, beginning with the exact equations of motion. The result is a set of conservation equations for the mean mass, momentum and fluctuational kinetic energy of each material. The equation system is at first unclosed due to integral terms involving unknown one-point and two-point probability distribution functions. In the mean momentum equation, the unclosed terms are clearly identified as representing two physical processes. One is transport of momentum by multimaterial Reynolds stresses, and the other is momentum exchange due to pressure fluctuations and viscous stress at material interfaces. Closure is approached by combining careful examination of multipoint statistical correlations with the traditional physical technique of kappa-epsilon modeling for single-material turbulence. This involves representing the multimaterial Reynolds stress for each material as a turbulent viscosity times the rate of strain based on the mean velocity of that material. The multimaterial turbulent viscosity is related to the fluctuational kinetic energy kappa, and the rate of fluctuational energy dissipation epsilon, for each material. Hence a set of kappa and epsilon equations must be solved, together with mean mass and momentum conservation equations, for each material. Both kappa and the turbulent viscosities enter into the momentum exchange force. The theory is applied to (a) calculation of the drag force on a sphere fixed in a uniform flow, (b) calculation of the settling rate in a suspension and (c) calculation of velocity profiles in the pneumatic transport of solid particles in a pipe.

  10. Draft FY 2012 Agency Financial Report

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

    Foreword he Reports Consolidation Act of 2000 authorizes Federal agencies, with the Office of Management and Budget's (OMB) concurrence, to consolidate various reports to provide performance, financial and related information in a more meaningful and useful format. For Fiscal Year (FY) 2015, the Department of Energy (Department or DOE), has produced an Agency Financial Report, and will provide an Annual Performance Report and a Summary of Performance and Financial Information, pursuant to OMB

  11. Financial Management Handbook | Department of Energy

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

    Financial Management Handbook Financial Management Handbook The purpose of the Financial Management Handbook (Handbook) is to present the Department of Energy's (DOE's) standards, procedures, and operational requirements in support of the accounting policies, principles, and applicable legal requirements contained in DOE Order 534.1B. Specifically, it provides guidance regarding the central agencies' accounting principles and standards-that is, the Office of Management and Budget (OMB),

  12. Financial News for Major Energy Companies

    Gasoline and Diesel Fuel Update (EIA)

    First Quarter 2006 The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or fail to provide separate information for the company's U.S. operations. Twenty-one major energy companies 1 reported overall net income (excluding

  13. Financial News for Major Energy Companies

    Gasoline and Diesel Fuel Update (EIA)

    Second Quarter 2005 The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or fail to provide separate information for the company's U.S. operations. Twenty-five major energy companies reported overall net income (excluding

  14. Financial News for Major Energy Companies

    Gasoline and Diesel Fuel Update (EIA)

    Third Quarter 2005 The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or fail to provide separate information for the company's U.S. operations. Twenty-one 1 major energy companies reported overall net income (excluding

  15. DNS of a turbulent lifted DME jet flame

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

    Minamoto, Yuki; Chen, Jacqueline H.

    2016-05-07

    A three-dimensional direct numerical simulation (DNS) of a turbulent lifted dimethyl ether (DME) slot jet flame was performed at elevated pressure to study interactions between chemical reactions with low-temperature heat release (LTHR), negative temperature coefficient (NTC) reactions and shear generated turbulence in a jet in a heated coflow. By conditioning on mixture fraction, local reaction zones and local heat release rate, the turbulent flame is revealed to exhibit a “pentabrachial” structure that was observed for a laminar DME lifted flame [Krisman et al., (2015)]. The propagation characteristics of the stabilization and triple points are also investigated. Potential stabilization points, spatialmore » locations characterized by preferred temperature and mixture fraction conditions, exhibit autoignition characteristics with large reaction rate and negligible molecular diffusion. The actual stabilization point which coincides with the most upstream samples from the pool of potential stabilization points fovr each spanwise location shows passive flame structure with large diffusion. The propagation speed along the stoichiometric surface near the triple point is compared with the asymptotic value obtained from theory [Ruetsch et al., (1995)]. At stoichiometric conditions, the asymptotic and averaged DNS values of flame displacement speed deviate by a factor of 1.7. However, accounting for the effect of low-temperature species on the local flame speed increase, these two values become comparable. In conclusion, this suggests that the two-stage ignition influences the triple point propagation speed through enhancement of the laminar flame speed in a configuration where abundant low-temperature products from the first stage, low-temperature ignition are transported to the lifted flame by the high-velocity jet.« less

  16. Bursting frequency prediction in turbulent boundary layers

    SciTech Connect (OSTI)

    LIOU,WILLIAM W.; FANG,YICHUNG

    2000-02-01

    The frequencies of the bursting events associated with the streamwise coherent structures of spatially developing incompressible turbulent boundary layers were predicted using global numerical solution of the Orr-Sommerfeld and the vertical vorticity equations of hydrodynamic stability problems. The structures were modeled as wavelike disturbances associated with the turbulent mean flow. The global method developed here involves the use of second and fourth order accurate finite difference formula for the differential equations as well as the boundary conditions. An automated prediction tool, BURFIT, was developed. The predicted resonance frequencies were found to agree very well with previous results using a local shooting technique and measured data.

  17. Merit Review Guide for Financial Assistance

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

    ... concerning individual merit reviewers including, but not limited to, their names, credentials, affiliations, and status as reviewer for particular financial assistance awards. ...

  18. Transportation Financial Incentives and Programs Resources |...

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

    Find transportation financial incentives and programs resources below. DOE Resources Alternative Fuels Data Center: Federal and State Laws and Incentives Clean Cities: Related ...

  19. Power Services Financial Information (pbl/about)

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

    Related Web Sites Power Services Organization Power Services Financial Information Net Revenue Sounding Board Tribal Affairs Office Account Executives Customer Service Centers...

  20. Ethics - Conflicting Financial Interests | Department of Energy

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

    Conflicting Financial Interests Ethics - Conflicting Financial Interests Suppose I don't own any shares of stock. Do I still have to think about financial conflicts of interest? You might. A Federal criminal law (18 USC 208) says that you cannot work on Government matters that will have an effect on your own personal financial interests. Stock in a company that would be affected by your job is only one example of something that could give you such an interest. For instance, you may not act on

  1. Revised Merit Review Guide for Financial Assistance

    Office of Energy Efficiency and Renewable Energy (EERE)

    Attached is the revised Merit Review Guide for Financial Assistance. Revisions include reformatting and updating of the information presented in the Guide and Attachments.

  2. Joseph Hezir Confirmed as Chief Financial Officer

    Broader source: Energy.gov [DOE]

    Joseph Hezir was confirmed by the Senate on December 4, 2014 as the Department of Energy’s Chief Financial Officer

  3. Parties interested in BPA's Financial Plan update

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

    project and identified four major areas to be addressed: access to capital, financial risk metrics, cost recovery policy, and planning for good and bad years. BPA will host...

  4. January 24, 2006 Financial Management Committee Handouts

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

    Collaborative Financial Overview for FY 2009 through September 30, 2009 Page 3 This information has been made publicly available by BPA on October 30, 2009 and contains...

  5. January 24, 2006 Financial Management Committee Handouts

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

    available by BPA on December 18, 2009 and contains BPA-approved Agency Financial Information. 21 Report ID: 0061FY10 Transmission Services Detailed Statement of Revenues and...

  6. January 24, 2006 Financial Management Committee Handouts

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

    available by BPA on August 28, 2009 and contains BPA-approved Agency Financial Information. 22 Report ID: 0061FY09 Transmission Services Detailed Statement of Revenues and...

  7. Renewable Energy Financial Instruments Guidance Tool (REFINe...

    Open Energy Info (EERE)

    Guidance Tool (REFINe) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Renewable Energy Financial Instruments Guidance Tool (REFINe) Focus Area: Renewable Energy...

  8. Quarterly Financial Report - 2nd Quarter, 2007

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

    reflect Emerging Issues Task Force (EITF) of the Financial Accounting Standards Board (FASB) guidance (referred to herein as "EITF 03-11"). Both revenues and expenses associated...

  9. Property:FinancialIncentive | Open Energy Information

    Open Energy Info (EERE)

    of financial incentives This is a property of type String. The allowed values for this property are: Capital Subsidies, Grants, & Rebates Credit Enhancements Fee Waivers...

  10. Annual Confidential Financial Disclosure Report (OGE 450)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2001-10-01

    This Notice addresses the Executive Branch confidential financial disclosure requirements. These requirements apply to career GS (GM) employees. (Replaces DOE N 326.7).

  11. Annual Confidential Financial Disclosure Report (SF 450)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1995-10-13

    This Notice addresses the Executive Branch confidential financial disclosure requirements. These requirements apply to persons employed at the GS-15 level and below, except for Schedule C appointees.

  12. Active Financial Assistance Letters | Department of Energy

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

    Technology Investment Agreements More Documents & Publications Financial Assistance Letters No. FAL 2006-04 Microsoft Word - FAL2006-04.doc Acquisition Letters No. AL 2013-05

  13. Plasma Turbulence Simulations Reveal Promising Insight for Fusion...

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

    Plasma Turbulence Simulations Reveal Promising Insight for Fusion Energy By Argonne ... Davis; Stephane Ethier, Princeton Plasma Physics Laboratory) Simulation of ...

  14. Compressing turbulence to improve inertial confinement fusion experiments |

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

    Princeton Plasma Physics Lab Compressing turbulence to improve inertial confinement fusion experiments By John Greenwald March 15, 2016 Tweet Widget Google Plus One Share on Facebook Compression of a turbulent plasma. Image by Seth Davidovits Compression of a turbulent plasma. Image by Seth Davidovits Physicists have long regarded plasma turbulence as unruly behavior that can limit the performance of fusion experiments. But new findings by researchers associated with the U.S. Department of

  15. Final Report - Investigation of Intermittent Turbulence and Turbulent Structures in the Presence of Controlled Sheared Flows

    SciTech Connect (OSTI)

    Gilmore, Mark A.

    2013-06-27

    Final Report for grant DE-FG02-06ER54898. The dynamics and generation of intermittent plasma turbulent structures, widely known as "blobs" have been studied in the presence of sheared plasma flows in a controlled laboratory experiment.

  16. Gauge turbulence, topological defect dynamics, and condensation in Higgs models

    SciTech Connect (OSTI)

    Gasenzer, Thomas; McLerran, Larry; Pawlowski, Jan M.; Sexty, Dénes

    2014-07-28

    The real-time dynamics of topological defects and turbulent configurations of gauge fields for electric and magnetic confinement are studied numerically within a 2+1D Abelian Higgs model. It is shown that confinement is appearing in such systems equilibrating after a strong initial quench such as the overpopulation of the infrared modes. While the final equilibrium state does not support confinement, metastable vortex defect configurations appearing in the gauge field are found to be closely related to the appearance of physically observable confined electric and magnetic charges. These phenomena are seen to be intimately related to the approach of a non-thermal fixed point of the far-from-equilibrium dynamical evolution, signaled by universal scaling in the gauge-invariant correlation function of the Higgs field. Even when the parameters of the Higgs action do not support condensate formation in the vacuum, during this approach, transient Higgs condensation is observed. We discuss implications of these results for the far-from-equilibrium dynamics of Yang–Mills fields and potential mechanisms of how confinement and condensation in non-Abelian gauge fields can be understood in terms of the dynamics of Higgs models. These suggest that there is an interesting new class of dynamics of strong coherent turbulent gauge fields with condensates.

  17. Gauge turbulence, topological defect dynamics, and condensation in Higgs models

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

    Gasenzer, Thomas; McLerran, Larry; Pawlowski, Jan M.; Sexty, Dénes

    2014-07-28

    The real-time dynamics of topological defects and turbulent configurations of gauge fields for electric and magnetic confinement are studied numerically within a 2+1D Abelian Higgs model. It is shown that confinement is appearing in such systems equilibrating after a strong initial quench such as the overpopulation of the infrared modes. While the final equilibrium state does not support confinement, metastable vortex defect configurations appearing in the gauge field are found to be closely related to the appearance of physically observable confined electric and magnetic charges. These phenomena are seen to be intimately related to the approach of a non-thermal fixedmore » point of the far-from-equilibrium dynamical evolution, signaled by universal scaling in the gauge-invariant correlation function of the Higgs field. Even when the parameters of the Higgs action do not support condensate formation in the vacuum, during this approach, transient Higgs condensation is observed. We discuss implications of these results for the far-from-equilibrium dynamics of Yang–Mills fields and potential mechanisms of how confinement and condensation in non-Abelian gauge fields can be understood in terms of the dynamics of Higgs models. These suggest that there is an interesting new class of dynamics of strong coherent turbulent gauge fields with condensates.« less

  18. Turbulence assessment at potential turbine sites

    SciTech Connect (OSTI)

    Daniels, A.

    1996-12-31

    As opposed to a fixed anemometer, the Tala kite is free to move in the air. The motion of the kite is not random, it moves with or against the speed gradient towards the center of passing turbulence events of higher or lower speeds thus allowing the kite to measure event maximum or minimum speed rather than the speed at some unknown distance from the event center like a fixed anemometer. This behavior is confirmed both by a theoretical aerodynamics analysis of the kite motion and by data from a field study where kite and hot film anemometer (HFA) events, defined by the rain flow count method, were compared with flap events on a rotating turbine blade. The HFAs simulated too few events lasting too long while the kites reproduced both the number of events and event periods remarkably close. It is concluded that the kite is the optimal tool for measuring turbulence at potential turbine sites. Kite turbulence can form the bases for economic return estimates and an example is given where less windy sites could be more economical than other more turbulent higher speed sites. 13 refs., 8 figs.

  19. Optical monitor for observing turbulent flow

    DOE Patents [OSTI]

    Albrecht, Georg F.; Moore, Thomas R.

    1992-01-01

    The present invention provides an apparatus and method for non-invasively monitoring turbulent fluid flows including anisotropic flows. The present invention uses an optical technique to filter out the rays travelling in a straight line, while transmitting rays with turbulence induced fluctuations in time. The output is two dimensional, and can provide data regarding the spectral intensity distribution, or a view of the turbulence in real time. The optical monitor of the present invention comprises a laser that produces a coherent output beam that is directed through a fluid flow, which phase-modulates the beam. The beam is applied to a temporal filter that filters out the rays in the beam that are straight, while substantially transmitting the fluctuating, turbulence-induced rays. The temporal filter includes a lens and a photorefractive crystal such as BaTiO.sub.3 that is positioned in the converging section of the beam near the focal plane. An imaging system is used to observe the filtered beam. The imaging system may take a photograph, or it may include a real time camera that is connected to a computer. The present invention may be used for many purposes including research and design in aeronautics, hydrodynamics, and combustion.

  20. Financial and Activity Report - July 16, 2010 | Department of Energy

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

    July 16, 2010 Financial and Activity Report - July 16, 2010 DOE_Financial_and_Activity_Report_07162010.xls (1.73 MB) More Documents & Publications Financial and Activity Report - February 12, 2010 Financial and Activity Report - February 19, 2010 Financial and Activity Report - April 02

  1. Financial and Activity Report - February 26, 2010 | Department of Energy

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

    6, 2010 Financial and Activity Report - February 26, 2010 DOE_Financial_and_Activity_Report_02262010.xls (1.74 MB) More Documents & Publications Financial and Activity Report - July 16, 2010 Financial and Activity Report - February 12, 2010 Financial and Activity Report - February 19

  2. Application for Financial Assistance, SF-424 | Department of Energy

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

    Application for Financial Assistance, SF-424 Application for Financial Assistance, SF-424 Application for Financial Assistance, SF-424, one of the negotiation forms for the financial opportunities process. Application for Financial Assistance, SF-424 (264.98 KB) More Documents & Publications RACEE Phase 2 Documents SF424RRBudget5YearPolicy.pdf WPN 14-1: Program Year 2014 Weatherization Grant Guidance

  3. Quantifying the Financial Benefits of Multifamily Retrofits

    SciTech Connect (OSTI)

    D. Philbrick; Scheu, R.; Brand, L.

    2016-01-01

    The U.S. Department of Energy’s Building America research team Partnership for Advanced Residential Retrofit analyzed building, energy, and financial program data as well as other public and private data to examine the relationship between energy-efficiency retrofits and financial performance on three levels: building, city, and community.

  4. Restructuring the energy industry: A financial perspective

    SciTech Connect (OSTI)

    Abrams, W.A.

    1995-12-31

    This paper present eight tables summarizing financial aspects of energy industry restructuring. Historical, current, and future business characteristics of energy industries are outlined. Projections of industry characteristics are listed for the next five years and for the 21st century. Future independent power procedures related to financial aspects are also outlined. 8 tabs.

  5. Combustion-turbulence interaction in the turbulent boundary layer over a hot surface

    SciTech Connect (OSTI)

    Ng, T.T.; Cheng, R.K.; Robben, F.; Talbot, L.

    1982-01-01

    The turbulence-combustion interaction in a reacting turbulent boundary layer over a heated flat plate was studied. Ethylene/air mixture with equivalence ratio of 0.35 was used. The free stream velocity was 10.5 m/s and the wall temperature was 1250/sup 0/K. Combustion structures visualization was provided by high-speed schlieren photographs. Fluid density statistics were deduced from Rayleigh scattering intensity measurements. A single-component laser Doppler velocimetry system was used to obtain mean and root-mean-square velocity distributions, the Reynolds stress, the streamwise and the cross-stream turbulent kinetic energy diffusion, and the production of turbulent kinetic energy by Reynolds stress. The combustion process was dominated by large-scale turbulent structures of the boundary layer. Combustion causes expansion of the boundary layer. No overall self-similarity is observed in either the velocity or the density profiles. Velocity fluctuations were increased in part of the boundary layer and the Reynolds stress was reduced. The turbulent kinetic energy diffusion pattern was changed significantly and a modification of the boundary layer assumption will be needed when dealing with this problem analytically. 11 figures, 1 table.

  6. Pressure atomizer having multiple orifices and turbulent generation feature

    DOE Patents [OSTI]

    VanBrocklin, Paul G.; Geiger, Gail E.; Moran, Donald James; Fournier, Stephane

    2002-01-01

    A pressure atomizer includes a silicon plate having a top surface and a bottom surface. A portion of the top surface defines a turbulent chamber. The turbulent chamber is peripherally bounded by the top surface of the plate. The turbulent chamber is recessed a predetermined depth relative to the top surface. The silicon plate further defines at least one flow orifice. Each flow orifice extends from the bottom surface of the silicon plate to intersect with and open into the turbulent chamber. Each flow orifice is in fluid communication with the turbulent chamber.

  7. Consolidated financial statements for fiscal year 1996

    SciTech Connect (OSTI)

    1997-02-01

    The following overview and accompanying audited financial statements have been prepared for Fiscal Year (FY) 1996 to report the financial position and the results of operations of the Department of Energy. These statements include the consolidated Statement of Financial Position and the consolidated Statement of Operations and Changes in Net Position. The statements have been prepared in accordance with the Office of Management and Budget Bulletin No. 94-01, Form and Content for Agency Financial Statements, and were developed in accordance with the hierarchy of accounting standards described therein. The overview provides a narrative on the Department of Energy`s mission, activities, and accomplishments. Utilizing performance measures as the primary vehicle for communicating Departmental accomplishments and results, this overview discusses the most significant measures while others are discussed in the supplemental information to the financial statements.

  8. Fermilab | Fermilab at Work | Web Form | FAW Website Suggestions

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

    FAW Website Suggestions Submit your FAW website suggestion using the form below. All fields are required. Which FAW page is this suggestion for? Main FAW page Work Resources...

  9. FY 2014 DOE Agency Financial Report | Department of Energy

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

    Agency Financial Reports » FY 2014 DOE Agency Financial Report FY 2014 DOE Agency Financial Report Provides key financial and performance information that demonstrates DOE's accountability to enhance U.S. security and economic growth through transformative science, technology innovation, and market solutions to meet our energy, nuclear security, and environmental challenges. FY 2014 Agency Financial Report (3.65 MB) More Documents & Publications FY 2015 DOE Agency Financial Report Audit

  10. FY 2015 DOE Agency Financial Report | Department of Energy

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

    Agency Financial Reports » FY 2015 DOE Agency Financial Report FY 2015 DOE Agency Financial Report Provides key financial and performance information that demonstrates DOE's accountability to enhance U.S. security and economic growth through transformative science, technology innovation, and market solutions to meet our energy, nuclear security, and environmental challenges. FY 2015 Agency Financial Report (5.31 MB) More Documents & Publications FY 2014 DOE Agency Financial Report Audit

  11. Approaches and Financial Models for Scaling up Norwegian Development...

    Open Energy Info (EERE)

    Approaches and Financial Models for Scaling up Norwegian Development Assistance to Clean Energy Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Approaches and Financial...

  12. UNEP-GEF Renewable Energy Project Financial Risk Management in...

    Open Energy Info (EERE)

    GEF Renewable Energy Project Financial Risk Management in Developing Countries Jump to: navigation, search Name UNEP-GEF Renewable Energy Project Financial Risk Management in...

  13. Financial Incentives Available for Facilities Affected by the...

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

    Financial Incentives Available for Facilities Affected by the US EPA Boiler MACT Proposed Rule, December 2012 Financial Incentives Available for Facilities Affected by the US EPA ...

  14. Grid Renewable Energy-Economic and Financial Analysis | Open...

    Open Energy Info (EERE)

    and Financial Analysis Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Grid Renewable Energy-Economic and Financial Analysis AgencyCompany Organization: World Bank...

  15. DOE Template Financial Institution RFP | Department of Energy

    Office of Environmental Management (EM)

    DOE Template Financial Institution RFP DOE Template Financial Institution RFP Request for Proposals (RFP) for Residential Energy Efficiency Loan Facilities, forms and instructions, ...

  16. Financial Assistance Letter 2016-02 | Department of Energy

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

    2016-02 Financial Assistance Letter 2016-02 DATE: February 17, 2016 TO: Procurement DirectorsContracting Officers FROM: Acting Chief Contract and Financial Assistance Policy ...

  17. Clean Energy Lending From the Financial Institution Perspective...

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

    Clean Energy Lending From the Financial Institution Perspective (Chapter 8 of the Clean Energy Finance Guide, 3rd Edition) Clean Energy Lending From the Financial Institution ...

  18. Microsoft PowerPoint - Financial Plan Risk Mitigation Master...

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

    within acceptable bounds BPA Financial Plan Workshop 5 Financial Plan Risk Metrics Agenda Origin of the Risk Metrics Issue History of risk mitigation measures and origin of...

  19. TO: Procurement Directors FROM: Director Contract and Financial...

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

    Directors FROM: Director Contract and Financial Assistance Policy Division Office of ... Guide Chapter 5.1 and Guide to Financial Assistance Chapter 2, Section 2.6.1 ...

  20. Financial Conflicts of Interest, Public Health Service Research...

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

    1 Disclosure of Significant Financial Interests & Management of Financial Conflicts of Interest, Public Health Service Research Awards Effective: 082412 I. SUMMARY PURPOSE, SCOPE ...

  1. Consolidated Appropriations Act, 2014 DIVISION E-FINANCIAL SERVICES...

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

    Public Law 113-76 Consolidated Appropriations Act, 2014 DIVISION E-FINANCIAL SERVICES AND ... Attachment 4 Financial Assistance Award Term Title: REPORTING AND REGISTRATION ...

  2. Supporting Statement: OE Recovery Act Financial Assistance Grants...

    Office of Environmental Management (EM)

    Supporting Statement: OE Recovery Act Financial Assistance Grants OMB Control Number 1910-5149 Supporting Statement: OE Recovery Act Financial Assistance Grants OMB Control Number ...

  3. Financial and Activity Report - June 5, 2009 | Department of...

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

    5, 2009 Financial and Activity Report - June 5, 2009 Office spreadsheet icon DOEFinancialandActivityReport06052009.xls More Documents & Publications Financial and Activity ...

  4. Indus Technical and Financial Consultant Ltd | Open Energy Information

    Open Energy Info (EERE)

    and Financial Consultant Ltd Place: Raipur, Chhattisgarh, India Zip: 492001 Sector: Services Product: Indus Technical and Financial Consultant Ltd is a consultancy company...

  5. Initial Application for FAC-C, Purchasing, Financial Assistance...

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

    Initial Application for FAC-C, Purchasing, Financial Assistance and Property Management Certification Initial Application for FAC-C, Purchasing, Financial Assistance and Property ...

  6. Free energy balance in gyrokinetic turbulence

    SciTech Connect (OSTI)

    Banon Navarro, A.; Morel, P.; Albrecht-Marc, M.; Carati, D.; Merz, F.; Goerler, T.; Jenko, F.

    2011-09-15

    Free energy plays an important role in gyrokinetic theory, since it is known to be a nonlinear invariant. Its evolution equations are derived and analyzed for the case of ion temperature gradient driven turbulence, using the formalism adopted in the Gene code. In particular, the ion temperature gradient drive, the collisional dissipation as well as entropy/electrostatic energy transfer channels represented by linear curvature and parallel terms are analyzed in detail.

  7. COHERENT STRUCTURES IN PLASMA TURBULENCE: PERSISTENCE, INTERMITTENCY,

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

    COHERENT STRUCTURES IN PLASMA TURBULENCE: PERSISTENCE, INTERMITTENCY, AND CONNECTIONS WITH OBSERVATIONS by Kurt W. Smith A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Physics) at the UNIVERSITY OF WISCONSIN-MADISON 2011 c Copyright by Kurt W. Smith 2011 All Rights Reserved i To Paul Terry, my adviser: for your patient guidance and helpful instruction; for the stimulating conversations and for honing my physical intuition; and for

  8. Electromagnetic Transport From Microtearing Mode Turbulence

    SciTech Connect (OSTI)

    Guttenfelder, W; Kaye, S M; Nevins, W M; Wang, E; Bell, R E; Hammett, G W; LeBlanc, B P; Mikkelsen, D R

    2011-03-23

    This Letter presents non-linear gyrokinetic simulations of microtearing mode turbulence. The simulations include collisional and electromagnetic effects and use experimental parameters from a high beta discharge in the National Spherical Torus Experiment (NSTX). The predicted electron thermal transport is comparable to that given by experimental analysis, and it is dominated by the electromagnetic contribution of electrons free streaming along the resulting stochastic magnetic field line trajectories. Experimental values of flow shear can significantly reduce the predicted transport.

  9. Turbulent Equipartition Theory of Toroidal Momentum Pinch

    SciTech Connect (OSTI)

    T.S. Hahm, P.H. Diamond, O.D. Gurcan, and G. Rewaldt

    2008-01-31

    The mode-independet part of magnetic curvature driven turbulent convective (TuroCo) pinch of the angular momentum density [Hahm et al., Phys. Plasmas 14,072302 (2007)] which was originally derived from the gyrokinetic equation, can be interpreted in terms of the turbulent equipartition (TEP) theory. It is shown that the previous results can be obtained from the local conservation of "magnetically weighted angular momentum density," nmi U|| R/B2, and its homogenization due to turbulent flows. It is also demonstrated that the magnetic curvature modification of the parallel acceleration in the nonlinear gyrokinetic equation in the laboratory frame, which was shown to be responsible for the TEP part of the TurCo pinch of angular momentum density in the previous work, is closely related to the Coriolis drift coupling to the perturbed electric field. In addition, the origin of the diffusive flux in the rotating frame is highlighted. Finally, it is illustratd that there should be a difference in scalings between the momentum pinch originated from inherently toroidal effects and that coming from other mechanisms which exist in a simpler geometry.

  10. Financial and Activity Report- October 21, 2011

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  11. Consolidated Financial Statements | Department of Energy

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

    November 29, 2012 Audit Report: OAS-FS-13-06 Southwestern Federal Power System's Fiscal Year 2011 Financial Statement Audit November 28, 2012 Audit Report: OAS-FS-13-05 Department...

  12. Financial and Activity Report- June 22, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  13. Financial and Activity Report- July 17, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  14. Financial and Activity Report- June 15, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  15. Financial and Activity Report- October 7, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  16. Financial and Activity Report- September 16, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  17. Financial and Activity Report- October 28, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  18. Financial and Activity Report- September 23, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  19. Financial and Activity Report- September 9, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  20. Financial and Activity Report- November 25, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  1. Financial and Activity Report- December 2, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  2. Financial and Activity Report- September 2, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  3. Financial and Activity Report- November 11, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  4. Financial and Activity Report- December 9, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  5. Financial and Activity Report- August 12, 2011

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  6. Financial and Activity Report- Janurary 18, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  7. Financial and Activity Report- June 30, 2013

    Broader source: Energy.gov [DOE]

    The Monthly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  8. Financial and Activity Report- December 7, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  9. Financial and Activity Report- February 15, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  10. Financial and Activity Report- December 14, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  11. Financial and Activity Report- Janurary 11, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  12. Financial and Activity Report- February 22, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  13. Financial and Activity Report- December 21, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  14. Financial and Activity Report- December 31, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  15. Financial and Activity Report- May 31, 2013

    Broader source: Energy.gov [DOE]

    The Monthly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  16. Financial and Activity Report- March 1, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  17. Financial and Activity Report- Janurary 25, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  18. Financial and Activity Report- February 1, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  19. Financial and Activity Report- February 8, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  20. Financial and Activity Report- Janurary 4, 2013

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  1. Financial and Activity Report- April 30, 2013

    Broader source: Energy.gov [DOE]

    The Monthly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  2. Financial and Activity Report- November 16, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  3. Financial and Activity Report- November 23, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  4. Financial and Activity Report- November 9, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  5. Financial and Activity Report- November 2, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  6. Financial and Activity Report- October 19, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  7. Financial and Activity Report- October 26, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  8. Financial and Activity Report- November 18, 2011

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  9. Distributed Generation Financial Incentives and Programs Resources

    Broader source: Energy.gov [DOE]

    There are various programs in place that offer financial incentives to the residential, commercial, industrial, utility,  education, and/or government sectors for renewable energy. Programs include...

  10. Financial and Activity Report- May 18, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  11. Financial and Activity Report- May 25, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  12. Financial and Activity Report- June 1, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  13. Financial and Activity Report- June 8, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  14. Related Financial Opportunities | Department of Energy

    Energy Savers [EERE]

    In addition, federal and state financial incentives, such as tax credits and grants, can help minimize the cost of hydrogen and fuel cell projects. U.S. Department of Energy ...

  15. Confidential Financial Disclosure Report (OGE Form 450)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2004-09-20

    This Notice addresses the Executive Branch confidential financial disclosure reporting requirements. These requirements apply to career GS/GM employees as well as employees serving in excepted service positions designated EJ, EK, and EN.

  16. Financial and Activity Report- October 14, 2011

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  17. Financial and Activity Report- May 11, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  18. Financial Management for Retail Energy Efficiency

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

    ... Budget History April 9, 2015 - FY 2015 (past) FY 2016 (current) FY 2017 - Dec. 31, 2018 ... retail financial calendars 3.1 Program Benchmarking Calls Q1, Q2 Q1 delayed less than a ...

  19. Financial and Activity Report- February 3, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  20. Financial Policy and Procedures for Reimbursable Work

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1988-08-15

    The directive establishes Department-wide financial policy and procedural guidance applicable to performing reimbursable work for other Federal agencies and with non-Federal Government entities, including foreign and commercial entities, State, and political subdivisions.

  1. Financial and Activity Report- September 30 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  2. Financial and Activity Report- January 27, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  3. Financial and Activity Report- January 6, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  4. Financial and Activity Report- December 16, 2011

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  5. Financial and Activity Report- December 31, 2011

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  6. Financial and Activity Report- January 13, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  7. Financial and Activity Report- April 13, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  8. Financial and Activity Report- March 30, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  9. Financial and Activity Report- March 23, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  10. Financial and Activity Report- March 2, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  11. Financial and Activity Report- April 27, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  12. Financial and Activity Report- March 9, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  13. Financial and Activity Report- March 16, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  14. Financial and Activity Report- April 6, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  15. Financial and Activity Report- August 26, 2011

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  16. Financial and Activity Report- May 4, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  17. Financial and Activity Report- August 3, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  18. Financial and Activity Report- October 12, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  19. Financial and Activity Report- September 14, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  20. Financial and Activity Report- August 24, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  1. Financial and Activity Report- August 17, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  2. Financial and Activity Report- September 28, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  3. Financial and Activity Report- July 27, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  4. Financial and Activity Report- September 7, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  5. Financial and Activity Report- September 30, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  6. Financial and Activity Report- October 5, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  7. Financial and Activity Report- April 20, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act.  The "Weekly Update" tab includes...

  8. Financial and Activity Report- February 10, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  9. Financial and Activity Report- February 17, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  10. Financial and Activity Report- February 24, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  11. Financial and Activity Report- August 3, 2012

    Broader source: Energy.gov [DOE]

    The Weekly Financial and Activity Reports section includes the Department of Energy's weekly report on spending and major actions related to the Recovery Act. The "Weekly Update" tab includes...

  12. PNC Financial Services | Open Energy Information

    Open Energy Info (EERE)

    Services Jump to: navigation, search Name: PNC Financial Services Place: Pittsburgh, PA Zip: 15222 Website: www.pnc.com Coordinates: 40.4423162, -80.005979 Show Map Loading...

  13. Confidential Financial Disclosure Reports (OGE 450)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2008-12-09

    The directive establishes requirements and responsibilities for Departmental elements and employees regarding filing Confidential Financial Disclosure Reports (OGE Form 450) in accordance with the Ethics in Government Act of 1978, as amended.

  14. State Energy Program Competitive Financial Assistance Program

    Broader source: Energy.gov [DOE]

    State Energy Program (SEP) dedicates a portion of its funding each year to provide competitively awarded financial assistance to U.S. states and territories to advance policies, programs, and market strategies.

  15. FY 2003 Financial Awards | Department of Energy

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

    3 Financial Awards FY 2003 Financial Awards In 2003, DOE awarded funding to a number of science and research projects to support research, development, and demonstration of hydrogen and fuel cell technologies. Advanced Hydrogen Fuel Cell Research In July 2003, DOE announced the selection of 13 firms and educational institutions in twelve states to receive $75 million in cost-shared awards to fund new research in advanced fuel cell technology for vehicles, buildings and other applications.

  16. FY 2004 Financial Awards | Department of Energy

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

    4 Financial Awards FY 2004 Financial Awards In 2004, DOE awarded funding to a number of science and research projects to support research, development, and demonstration of hydrogen and fuel cell technologies. The Grand Challenge Hydrogen Storage "Centers of Excellence" Vehicle and Infrastructure "Learning Demonstrations" Portable Power, Auxiliary Power Units, and R&D for Off-Road Fuel Cell Applications Hydrogen Technology Learning Centers Hydrogen Education Development

  17. FY 2006 Financial Awards | Department of Energy

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

    6 Financial Awards FY 2006 Financial Awards In 2006, DOE awarded funding to a number of science and research projects to support research, development, and demonstration of hydrogen and fuel cell technologies. Codes & Standards for the Hydrogen Economy Effects of a Transition to a Hydrogen Economy on Employment in the United States High Temperature, Low Relative Humidity Polymer-Type Membranes Laboratory Call for Research & Development for On-Board Vehicular Hydrogen Storage Research and

  18. FY 2007 Financial Awards | Department of Energy

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

    7 Financial Awards FY 2007 Financial Awards In 2007, DOE awarded funding to a number of science and research projects to support research, development, and demonstration of hydrogen and fuel cell technologies. DOE Awards $100 Million for Fuel Cell R&D Hydrogen Lessons Learned Hydrogen and Fuel Cell Analysis: Environmental Impacts of Hydrogen Systems DOE Awards $100 Million for Fuel Cell R&D Details on the individual projects awarded are provided below. Selected Organization Location

  19. FY 2008 Financial Awards | Department of Energy

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

    8 Financial Awards FY 2008 Financial Awards In 2008, DOE awarded funding to a number of science and research projects to support research, development, and demonstration of hydrogen and fuel cell technologies. Administration of H-Prize for Hydrogen Storage Hydrogen Education Awards Announced Manufacturing Research and Development for Hydrogen and Fuel Cell Systems Research and Development for Hydrogen Production and Delivery Technology Research and Development for On-Board Vehicular Hydrogen

  20. FY 2009 Financial Awards | Department of Energy

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

    9 Financial Awards FY 2009 Financial Awards In 2009, DOE awarded funding to a number of science and research projects to support research, development, and demonstration of hydrogen and fuel cell technologies. DOE Awards $113 Million for Fuel Cell R&D Hydrogen Storage Engineering Center of Excellence Recovery Act: Fuel Cell Market Transformation Projects DOE Awards $113 Million for Fuel Cell R&D DOE is awarding $113 million to fund 28 projects to advance the development of fuel cell

  1. A Financial Perspective | Department of Energy

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

    A Financial Perspective A Financial Perspective This presentation summarizes the information discussed by Wilson Sonsini Goodrich & Rosati at the PV Manufacturing Workshop, March 25, 2011. pv_manufacturing_workshop_2011_march_glass.pdf (376.18 KB) More Documents & Publications DOE Fuel Cell Pre-Solicitiation Workshop Participants List Federal and State Structures to Support Financing Utility-Scale Solar Projects and the Business Models Designed to Utilize Them Accelerating CHP

  2. DOE Policy for Digital Research Data Management: Suggested Elements...

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

    Suggested Elements for a Data Management Plan DOE Policy for Digital Research Data Management: Suggested Elements for a Data Management Plan The Principal Investigator or other ...

  3. Suggested Elements for an EERE Data Management Plan | Department...

    Office of Environmental Management (EM)

    Services Funding Digital Data Management Suggested Elements for an EERE Data Management Plan Suggested Elements for an EERE Data Management Plan The principal investigator ...

  4. Suggested Elements for a Data Management Plan | Department of...

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

    Services Funding Digital Data Management Suggested Elements for a Data Management Plan Suggested Elements for a Data Management Plan The principal investigator should ...

  5. The deterministic chaos and random noise in turbulent jet

    SciTech Connect (OSTI)

    Yao, Tian-Liang; Liu, Hai-Feng Xu, Jian-Liang; Li, Wei-Feng

    2014-06-01

    A turbulent flow is usually treated as a superposition of coherent structure and incoherent turbulence. In this paper, the largest Lyapunov exponent and the random noise in the near field of round jet and plane jet are estimated with our previously proposed method of chaotic time series analysis [T. L. Yao, et al., Chaos 22, 033102 (2012)]. The results show that the largest Lyapunov exponents of the round jet and plane jet are in direct proportion to the reciprocal of the integral time scale of turbulence, which is in accordance with the results of the dimensional analysis, and the proportionality coefficients are equal. In addition, the random noise of the round jet and plane jet has the same linear relation with the Kolmogorov velocity scale of turbulence. As a result, the random noise may well be from the incoherent disturbance in turbulence, and the coherent structure in turbulence may well follow the rule of chaotic motion.

  6. The interaction of high-speed turbulence with flames: Turbulent flame speed

    SciTech Connect (OSTI)

    Poludnenko, A.Y.; Oran, E.S. [Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC 20375 (United States)

    2011-02-15

    Direct numerical simulations of the interaction of a premixed flame with driven, subsonic, homogeneous, isotropic, Kolmogorov-type turbulence in an unconfined system are used to study the mechanisms determining the turbulent flame speed, S{sub T}, in the thin reaction zone regime. High intensity turbulence is considered with the r.m.s. velocity 35 times the laminar flame speed, S{sub L}, resulting in the Damkoehler number Da=0.05. The simulations were performed with Athena-RFX, a massively parallel, fully compressible, high-order, dimensionally unsplit, reactive-flow code. A simplified reaction-diffusion model, based on the one-step Arrhenius kinetics, represents a stoichiometric H{sub 2}-air mixture under the assumption of the Lewis number Le=1. Global properties and the internal structure of the flame were analyzed in an earlier paper, which showed that this system represents turbulent combustion in the thin reaction zone regime. This paper demonstrates that: (1) The flame brush has a complex internal structure, in which the isosurfaces of higher fuel mass fractions are folded on progressively smaller scales. (2) Global properties of the turbulent flame are best represented by the structure of the region of peak reaction rate, which defines the flame surface. (3) In the thin reaction zone regime, S{sub T} is predominantly determined by the increase of the flame surface area, A{sub T}, caused by turbulence. (4) The observed increase of S{sub T} relative to S{sub L} exceeds the corresponding increase of A{sub T} relative to the surface area of the planar laminar flame, on average, by {approx}14%, varying from only a few percent to as high as {approx}30%. (5) This exaggerated response is the result of tight flame packing by turbulence, which causes frequent flame collisions and formation of regions of high flame curvature >or similar 1/{delta}{sub L}, or ''cusps,'' where {delta}{sub L} is the thermal width of the laminar flame. (6) The local flame speed in the cusps

  7. Kinetic Theory of Turbulent Multiphase Flow | The Ames Laboratory

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

    Kinetic Theory of Turbulent Multiphase Flow FWP/Project Description: Project Leader(s): Rodney Fox It is proposed to further the present understanding of turbulent gas-solid fluidized-bed reactors from the conceptual standpoint of kinetic theory and turbulence modeling. The primary purpose is to provide a theoretical underpinning for the construction of computer codes to better understand and predict multiphase flow behavior in polydisperse gas-solid fluidized-bed reactors and risers. In

  8. Assessment of Combustion and Turbulence Models for the Simulation of

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

    Combustion Processes in a DI Diesel Engine | Department of Energy Combustion and Turbulence Models for the Simulation of Combustion Processes in a DI Diesel Engine Assessment of Combustion and Turbulence Models for the Simulation of Combustion Processes in a DI Diesel Engine Various applied combustion and turbulence models were investigated along with chemical kinetic mechanisms simulating a biodiesel-fueled engine deer09_ren.pdf (497.22 KB) More Documents & Publications Low Temperature

  9. Simulation of High Reynolds Number Turbulent Boundary Layers | Argonne

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

    Leadership Computing Facility A visualization of the velocity in a boundary layer at Reynolds numbers up to 2100 shows the growth of the turbulence structures out into the free stream as it evolves downstream (to the right) and the intermittent uneven boundary of the turbulent region. Juan Sillero, Universidad Politécnica de Madrid. Simulation of High Reynolds Number Turbulent Boundary Layers PI Name: Robert Moser PI Email: rmoser@ices.utexas.edu Institution: University of Texas at Austin

  10. DUST TRANSPORT IN PROTOSTELLAR DISKS THROUGH TURBULENCE AND SETTLING

    SciTech Connect (OSTI)

    Turner, N. J.; Carballido, A. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Sano, T., E-mail: neal.turner@jpl.nasa.go [Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871 (Japan)

    2010-01-01

    We apply ionization balance and magnetohydrodynamical (MHD) calculations to investigate whether magnetic activity moderated by recombination on dust grains can account for the mass accretion rates and the mid-infrared spectra and variability of protostellar disks. The MHD calculations use the stratified shearing-box approach and include grain settling and the feedback from the changing dust abundance on the resistivity of the gas. The two-decade spread in accretion rates among solar-mass T Tauri stars is too large to result solely from variations in the grain size and stellar X-ray luminosity, but can plausibly be produced by varying these parameters together with the disk magnetic flux. The diverse shapes and strengths of the mid-infrared silicate bands can come from the coupling of grain settling to the distribution of the magnetorotational turbulence, through the following three effects. First, recombination on grains 1 mum or smaller yields a magnetically inactive dead zone extending more than two scale heights from the midplane, while turbulent motions in the magnetically active disk atmosphere overshoot the dead zone boundary by only about one scale height. Second, grains deep in the dead zone oscillate vertically in wave motions driven by the turbulent layer above, but on average settle at the rates found in laminar flow, so that the interior of the dead zone is a particle sink and the disk atmosphere will become dust-depleted unless resupplied from elsewhere. Third, with sufficient depletion, the dead zone is thinner and mixing dredges grains off the midplane. The last of these processes enables evolutionary signatures such as the degree of settling to sometimes decrease with age. The MHD results also show that the magnetic activity intermittently lifts clouds of small grains into the atmosphere. Consequently the photosphere height changes by up to one-third over timescales of a few orbits, while the extinction along lines of sight grazing the disk surface

  11. Identification of new turbulence contributions to plasma transport...

    Office of Scientific and Technical Information (OSTI)

    Identification of new turbulence contributions to plasma transport and confinement in spherical tokamak regime Citation Details In-Document Search This content will become publicly...

  12. Toward the Theory of Turbulence in Magnetized Plasmas

    SciTech Connect (OSTI)

    Boldyrev, Stanislav

    2013-07-26

    The goal of the project was to develop a theory of turbulence in magnetized plasmas at large scales, that is, scales larger than the characteristic plasma microscales (ion gyroscale, ion inertial scale, etc.). Collisions of counter-propagating Alfven packets govern the turbulent cascade of energy toward small scales. It has been established that such an energy cascade is intrinsically anisotropic, in that it predominantly supplies energy to the modes with mostly field-perpendicular wave numbers. The resulting energy spectrum of MHD turbulence, and the structure of the fluctuations were studied both analytically and numerically. A new parallel numerical code was developed for simulating reduced MHD equations driven by an external force. The numerical setting was proposed, where the spectral properties of the force could be varied in order to simulate either strong or weak turbulent regimes. It has been found both analytically and numerically that weak MHD turbulence spontaneously generates a condensate, that is, concentration of magnetic and kinetic energy at small k{sub {parallel}}. A related topic that was addressed in the project is turbulent dynamo action, that is, generation of magnetic field in a turbulent flow. We were specifically concentrated on the generation of large-scale magnetic field compared to the scales of the turbulent velocity field. We investigate magnetic field amplification in a turbulent velocity field with nonzero helicity, in the framework of the kinematic Kazantsev-Kraichnan model.

  13. PPPL researchers advance understanding of plasma turbulence that...

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

    PPPL researchers advance understanding of plasma turbulence that drains heat from fusion ... Now, physicists at the U.S. Department of Energy's Princeton Plasma Physics Laboratory ...

  14. Gyrokinetic simulations of turbulent transport in fusion plasmas

    SciTech Connect (OSTI)

    Rogers, Barrett Neil

    2013-05-30

    This is the final report for a DOE award that was targeted at understanding and simulating turbulence and transport in plasma fusion devices such as tokamaks.

  15. A Model for Turbulent Combustion Simulation of Large Scale Hydrogen...

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

    A Model for Turbulent Combustion Simulation of Large Scale Hydrogen Explosions Event Sponsor: Argonne Leadership Computing Facility Seminar Start Date: Oct 6 2015 - 10:00am...

  16. Sandia Energy - Turbulent Mixed-Mode Combustion Studied in a...

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

    Turbulent Mixed-Mode Combustion Studied in a New Piloted Burner Home Transportation Energy CRF Office of Science Capabilities News News & Events Research & Capabilities Fuel...

  17. Multi-Scale Simulations Solve a Plasma Turbulence Mystery

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

    period are helping physicists better understand what influences the behavior of the plasma turbulence that is driven by the intense heating necessary to create fusion energy. ...

  18. PPPL researchers advance understanding of plasma turbulence that...

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

    But while that motion helps produce the fusion reactions that could power a new class of electricity generator, the turbulence it generates can also limit those reactions. Now, ...

  19. Turbulence-Flame Interactions in Type Ia Supernovae (Journal...

    Office of Scientific and Technical Information (OSTI)

    turbulent intensity and l is the integral scale. For the larger integral scales characteristic of a real supernova, the flame structure is predicted to become complex and unsteady. ...

  20. Lagrangian-Averaged Scale-Dependent subfilter turbulence model

    Energy Science and Technology Software Center (OSTI)

    2011-03-01

    LASD are Fortran 90 modules that compute the stresses and scalar fluxes arising from unrelolved scales of turbulence, required for large-eddy eimulations of fluid flows.

  1. Consider Installing Turbulators on Two- and Three-Pass Firetube...

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

    steam systems. STEAM TIP SHEET 25 Consider Installing Turbulators on Two- and Three-Pass Firetube Boilers (January 2012) (373.54 KB) More Documents & Publications Clean Boiler ...

  2. Identifying new sources of turbulence in spherical tokamaks | Princeton

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

    Plasma Physics Lab Identifying new sources of turbulence in spherical tokamaks By John Greenwald November 24, 2015 Tweet Widget Google Plus One Share on Facebook Computer simulation of turbulence in a model of the NSTX-U. Image courtesy of Eliot Feibush. Computer simulation of turbulence in a model of the NSTX-U. Image courtesy of Eliot Feibush. For fusion reactions to take place efficiently, the atomic nuclei that fuse together in plasma must be kept sufficiently hot. But turbulence in the

  3. Identifying new sources of turbulence in spherical tokamaks | Princeton

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

    Plasma Physics Lab Identifying new sources of turbulence in spherical tokamaks By John Greenwald November 25, 2015 Tweet Widget Google Plus One Share on Facebook Computer simulation of turbulence in a model of the NSTX-U. Image courtesy of Eliot Feibush. Computer simulation of turbulence in a model of the NSTX-U. Image courtesy of Eliot Feibush. For fusion reactions to take place efficiently, the atomic nuclei that fuse together in plasma must be kept sufficiently hot. But turbulence in the

  4. Ion temperature gradient driven turbulence with strong trapped...

    Office of Scientific and Technical Information (OSTI)

    driven turbulence with strong trapped ion resonance is presented. The role of trapped ion granulations, clusters of trapped ions correlated by precession resonance, is the focus. ...

  5. Sandia Energy - The CRF's Turbulent Combustion Lab (TCL) Captures...

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

    CRF's Turbulent Combustion Lab (TCL) Captures the Moment of Hydrogen Ignition Home Energy Transportation Energy CRF Facilities News News & Events Research & Capabilities The CRF's...

  6. Hot Particle and Turbulent Transport Effects on Resistive Instabilities

    SciTech Connect (OSTI)

    Brennan, Dylan P.

    2012-10-16

    This research project included two main thrusts; energetic particle effects on resistive MHD modes in tokamaks, and turbulence interactions with tearing modes in simplified geometry.

  7. TURBULENCE DECAY AND CLOUD CORE RELAXATION IN MOLECULAR CLOUDS

    SciTech Connect (OSTI)

    Gao, Yang; Law, Chung K.; Xu, Haitao

    2015-02-01

    The turbulent motion within molecular clouds is a key factor controlling star formation. Turbulence supports molecular cloud cores from evolving to gravitational collapse and hence sets a lower bound on the size of molecular cloud cores in which star formation can occur. On the other hand, without a continuous external energy source maintaining the turbulence, such as in molecular clouds, the turbulence decays with an energy dissipation time comparable to the dynamic timescale of clouds, which could change the size limits obtained from Jean's criterion by assuming constant turbulence intensities. Here we adopt scaling relations of physical variables in decaying turbulence to analyze its specific effects on the formation of stars. We find that the decay of turbulence provides an additional approach for Jeans' criterion to be achieved, after which gravitational infall governs the motion of the cloud core. This epoch of turbulence decay is defined as cloud core relaxation. The existence of cloud core relaxation provides a more complete understanding of the effect of the competition between turbulence and gravity on the dynamics of molecular cloud cores and star formation.

  8. Adaptive LES Methodology for Turbulent Flow Simulations

    SciTech Connect (OSTI)

    Oleg V. Vasilyev

    2008-06-12

    Although turbulent flows are common in the world around us, a solution to the fundamental equations that govern turbulence still eludes the scientific community. Turbulence has often been called one of the last unsolved problem in classical physics, yet it is clear that the need to accurately predict the effect of turbulent flows impacts virtually every field of science and engineering. As an example, a critical step in making modern computational tools useful in designing aircraft is to be able to accurately predict the lift, drag, and other aerodynamic characteristics in numerical simulations in a reasonable amount of time. Simulations that take months to years to complete are much less useful to the design cycle. Much work has been done toward this goal (Lee-Rausch et al. 2003, Jameson 2003) and as cost effective accurate tools for simulating turbulent flows evolve, we will all benefit from new scientific and engineering breakthroughs. The problem of simulating high Reynolds number (Re) turbulent flows of engineering and scientific interest would have been solved with the advent of Direct Numerical Simulation (DNS) techniques if unlimited computing power, memory, and time could be applied to each particular problem. Yet, given the current and near future computational resources that exist and a reasonable limit on the amount of time an engineer or scientist can wait for a result, the DNS technique will not be useful for more than 'unit' problems for the foreseeable future (Moin & Kim 1997, Jimenez & Moin 1991). The high computational cost for the DNS of three dimensional turbulent flows results from the fact that they have eddies of significant energy in a range of scales from the characteristic length scale of the flow all the way down to the Kolmogorov length scale. The actual cost of doing a three dimensional DNS scales as Re{sup 9/4} due to the large disparity in scales that need to be fully resolved. State-of-the-art DNS calculations of isotropic turbulence

  9. MHD turbulence model for global simulations of the solar wind and SEP acceleration

    SciTech Connect (OSTI)

    Sokolov, Igor V.; Roussev, Ilia I.

    2008-08-25

    The aim of the present work is to unify the various transport equations for turbulent waves that are used in different areas of space physics. We mostly focus on the magnetohydrodynamic (MHD) turbulence, in particular the Alfvenic turbulence.

  10. PLASMA EMISSION BY WEAK TURBULENCE PROCESSES

    SciTech Connect (OSTI)

    Ziebell, L. F.; Gaelzer, R.; Yoon, P. H.; Pavan, J. E-mail: rudi.gaelzer@ufrgs.br E-mail: joel.pavan@ufpel.edu.br

    2014-11-10

    The plasma emission is the radiation mechanism responsible for solar type II and type III radio bursts. The first theory of plasma emission was put forth in the 1950s, but the rigorous demonstration of the process based upon first principles had been lacking. The present Letter reports the first complete numerical solution of electromagnetic weak turbulence equations. It is shown that the fundamental emission is dominant and unless the beam speed is substantially higher than the electron thermal speed, the harmonic emission is not likely to be generated. The present findings may be useful for validating reduced models and for interpreting particle-in-cell simulations.

  11. Neutrino oscillations in a turbulent plasma

    SciTech Connect (OSTI)

    Mendona, J. T.; Haas, F.

    2013-07-15

    A new model for the joint neutrino flavor and plasma oscillations is introduced, in terms of the dynamics of the neutrino flavor polarization vector in a plasma background. Fundamental solutions are found for both time-invariant and time-dependent media, considering slow and fast variations of the electron plasma density. The model is shown to be described by a generalized Hamiltonian formalism. In the case of a broad spectrum of electron plasma waves, a statistical approach indicates the shift of both equilibrium value and frequency oscillation of flavor coherence, due to the existence of a turbulent plasma background.

  12. Influence of suprathermal background electrons on strong auroral double layers: Laminar and turbulent regimes

    SciTech Connect (OSTI)

    Newman, D. L.; Goldman, M. V.; Sen, N. [Center for Integrated Plasma Studies, University of Colorado at Boulder, Boulder, Colorado 80309 (United States); Andersson, L.; Ergun, R. E. [Laboratory for Atmospheric and Space Physics, University of Colorado at Boulder, Boulder, Colorado 80309 (United States)

    2008-07-15

    A series of one-dimensional Vlasov simulations [Newman et al., Phys. Plasmas 15, 072902 (2008), this issue] show that a sufficiently dense and hot suprathermal electron population can stabilize strong laminar double layers over long periods while regulating their strength and velocity. When suprathermals are less dense or absent, the double layers tend to be sporadic and turbulent. A detailed comparison of the laminar and turbulent regimes reveals that the disruption of the laminar state can be triggered by kinetically modified Buneman instabilities on the low-potential side of the double layer, and by density perturbations that develop into nonlinear coherent shocklike structures on the high-potential side. These findings suggest that the suprathermal electrons may be responsible for suppressing both of these routes to disruption of the laminar state.

  13. Suggested Talking Points for Hydrogen Road Tour | Department of Energy

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

    Suggested Talking Points for Hydrogen Road Tour Suggested Talking Points for Hydrogen Road Tour Suggested Talking Points for Hydrogen Road Tour (113.63 KB) More Documents & Publications Clean, Efficient, and Reliable Power for the 21st Century: Fact Sheet State of the States: Fuel Cells in America 2010 State of the States: Fuel Cells in America 2012

  14. Plasma Blobs and Filaments: Fusion Scientists Discover Secrets of Turbulent

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

    Edge Transport | Princeton Plasma Physics Lab Plasma Blobs and Filaments: Fusion Scientists Discover Secrets of Turbulent Edge Transport American Fusion News Category: U.S. Universities Link: Plasma Blobs and Filaments: Fusion Scientists Discover Secrets of Turbulent Edge Transport

  15. Global warming, insurance losses and financial industry

    SciTech Connect (OSTI)

    Low, N.C.

    1996-12-31

    Global warming causes extremely bad weather in the near term. They have already caught the attention of the insurance industry, as they suffered massive losses in the last decade. Twenty-one out of the 25 largest catastrophes in the US, mainly in the form of hurricanes have occurred in the last decade. The insurance industry has reacted by taking the risk of global warming in decisions as to pricing and underwriting decisions. But they have yet to take a more active role in regulating the factors that contributes to global warming. How global warming can impact the financial industry and the modern economy is explored. Insurance and modern financial derivatives are key to the efficient functioning of the modern economy, without which the global economy can still function but will take a giant step backward. Any risk as global warming that causes economic surprises will hamper the efficient working of the financial market and the modern economy.

  16. Microtearing turbulence: Magnetic braiding and disruption limit

    SciTech Connect (OSTI)

    Firpo, Marie-Christine

    2015-12-15

    A realistic reduced model involving a large poloidal spectrum of microtearing modes is used to probe the existence of some stochasticity of magnetic field lines. Stochasticity is shown to occur even for the low values of the magnetic perturbation δB/B devoted to magnetic turbulence that have been experimentally measured. Because the diffusion coefficient may strongly depend on the radial (or magnetic-flux) coordinate, being very low near some resonant surfaces, and because its evaluation implicitly makes a normal diffusion hypothesis, one turns to another indicator appropriate to diagnose the confinement: the mean residence time of magnetic field lines. Their computation in the microturbulence frame points to the existence of a disruption limit, namely of a critical order of magnitude of δB/B above which stochasticity is no longer benign yet, leads to a macroscopic loss of confinement in some tens to hundred of electron toroidal excursions. Since the level of magnetic turbulence δB/B has been measured to grow with the plasma electron density, this would also be a density limit.

  17. Mass dependency of turbulent parameters in stationary glow discharge plasmas

    SciTech Connect (OSTI)

    Titus, J. B.; Alexander, A. B.; Wiggins, D. L.; Johnson, J. A. III

    2013-05-15

    A direct current glow discharge tube is used to determine how mass changes the effects of certain turbulence characteristics in a weakly ionized gas. Helium, neon, argon, and krypton plasmas were created, and an axial magnetic field, varied from 0.0 to 550.0 Gauss, was used to enhance mass dependent properties of turbulence. From the power spectra of light emission variations associated with velocity fluctuations, determination of mass dependency on turbulent characteristic unstable modes, energy associated with turbulence, and the rate at which energy is transferred from scale to scale are measured. The magnetic field strength is found to be too weak to overcome particle diffusion to the walls to affect the turbulence in all four types of plasmas, though mass dependency is still detected. Though the total energy and the rate at which the energy moves between scales are mass invariant, the amplitude of the instability modes that characterize each plasma are dependent on mass.

  18. Internal wave energy radiated from a turbulent mixed layer

    SciTech Connect (OSTI)

    Munroe, James R.; Sutherland, Bruce R.

    2014-09-15

    We examine mixed-layer deepening and the generation of internal waves in stratified fluid resulting from turbulence that develops in response to an applied surface stress. In laboratory experiments the stress is applied over the breadth of a finite-length tank by a moving roughened conveyor belt. The turbulence in the shear layer is characterized using particle image velocimetry to measure the kinetic energy density. The internal waves are measured using synthetic schlieren to determine their amplitudes, frequencies, and energy density. We also perform fully nonlinear numerical simulations restricted to two dimensions but in a horizontally periodic domain. These clearly demonstrate that internal waves are generated by transient eddies at the integral length scale of turbulence and which translate with the background shear along the base of the mixed layer. In both experiments and simulations we find that the energy density of the generated waves is 1%3% of the turbulent kinetic energy density of the turbulent layer.

  19. Turbulent natural and mixed convection along a vertical plate

    SciTech Connect (OSTI)

    Abu-Mulaweh, H.I.; Armaly, B.F.; Chen, T.S.; Zhao, J.Z.

    1997-07-01

    Measurements of turbulent boundary-layer air flow in natural and mixed convection adjacent to an isothermal vertical flat plate are reported. Laser-Doppler velocimeter and cold wire anemometer were used, respectively, to measure simultaneously the mean turbulent velocity and temperature distributions were measured for a temperature difference, {Delta}T, of 30 C between the heated wall and the free stream air at a fixed location x = 3 m (with a corresponding Grashof number Gr{sub x} = 8.55 x 10{sup 10}), and for a range of free stream velocities 0 m/s {le} U{sub {infinity} } {le} 0.41 m/s. The effect of small free stream velocity on the turbulent natural convection is examined. These results reveal that the introduction of small free stream velocity on turbulent natural convection flow suppresses turbulence and decreases the heat transfer rate from the heated wall.

  20. SOUTHWESTERN POWER ADMINISTRATION COMBINED FINANCIAL STATEMENTS

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

    ADMINISTRATION COMBINED FINANCIAL STATEMENTS 2006-2009 This page inTenTionally lefT blank SOUTHWESTERN FEDERAL POWER SYSTEM Combined Financial Statements September 30, 2009, 2008, 2007, and 2006 (With Independent Auditors' Report Thereon) This page inTenTionally lefT blank KPMG LLP Suite 310 100 West Fifth Street Tulsa, OK 74103 KPMG LLP is a Delaware limited liability partnership, the U.S. member firm of KPMG International Cooperative ("KPMG International"), a Swiss entity.

  1. Climate Information Needs for Financial Decision Making

    SciTech Connect (OSTI)

    Higgins, Paul

    2013-11-19

    Climate Information Needs for Financial Decision Making (Final Report) This Department of Energy workshop award (grant #DE-SC0008480) provided primary support for the American Meteorological Society’s study on climate information needs for financial decision making. The goal of this study was to help advance societal decision making by examining the implications of climate variability and change on near-term financial investments. We explored four key topics: 1) the conditions and criteria that influence returns on investment of major financial decisions, 2) the climate sensitivity of financial decisions, 3) climate information needs of financial decision makers, and 4) potential new mechanisms to promote collaboration between scientists and financial decision makers. Better understanding of these four topics will help scientists provide the most useful information and enable financial decision makers to use scientific information most effectively. As a result, this study will enable leaders in business and government to make well-informed choices that help maximize long-term economic success and social wellbeing in the United States The outcomes of the study include a workshop, which brought together leaders from the scientific and financial decision making communities, a publication of the study report, and a public briefing of the results to the policy community. In addition, we will present the results to the scientific community at the AMS Annual Meeting in February, 2014. The study results were covered well by the media including Bloomberg News and E&E News. Upon request, we also briefed the Office of Science Technology Policy (OSTP) and the Council on Environmental Quality (CEQ) on the outcomes. We presented the results to the policy community through a public briefing in December on Capitol Hill. The full report is publicly available at www.ametsoc.org/cin. Summary of Key Findings The United States invests roughly $1.5 trillion U.S. dollars (USD) in

  2. Collisionless inter-species energy transfer and turbulent heating in drift wave turbulence

    SciTech Connect (OSTI)

    Zhao, L.; Diamond, P. H.

    2012-08-15

    We reconsider the classic problems of calculating 'turbulent heating' and collisionless inter-species transfer of energy in drift wave turbulence. These issues are of interest for low collisionality, electron heated plasmas, such as ITER, where collisionless energy transfer from electrons to ions is likely to be significant. From the wave Poynting theorem at steady state, a volume integral over an annulus r{sub 1}=-S{sub r}|{sub r{sub 1}{sup r{sub 2}}}{ne}0. Here S{sub r} is the wave energy density flux in the radial direction. Thus, a wave energy flux differential across an annular region indeed gives rise to a net heating, in contrast to previous predictions. This heating is related to the Reynolds work by the zonal flow, since S{sub r} is directly linked to the zonal flow drive. In addition to net heating, there is inter-species heat transfer. For collisionless electron drift waves, the total turbulent energy source for collisionless heat transfer is due to quasilinear electron cooling. Subsequent quasilinear ion heating occurs through linear ion Landau damping. In addition, perpendicular heating via ion polarization currents contributes to ion heating. Since at steady state, Reynolds work of the turbulence on the zonal flow must balance zonal flow frictional damping ({approx}{nu}{sub ii}{sup 2}{approx}|(e{phi}(tilde sign)/T)|{sup 4}), it is no surprise that zonal flow friction appears as an important channel for ion heating. This process of energy transfer via zonal flow has not previously been accounted for in analyses of energy transfer. As an application, we compare the rate of turbulent energy transfer in a low collisionality plasma with the rate of the energy transfer by collisions. The result shows that the collisionless turbulent energy transfer is a significant energy coupling process for ITER plasma.

  3. Membrane proteomics of phagosomes suggests a connection to autophagy...

    Office of Scientific and Technical Information (OSTI)

    546 proteins,suggests diverse functions of the phagosome and potential connectionsto secretory processes, toll-like receptor signaling, andautophagy. Many identified proteins were ...

  4. Suggested Elements for an EERE Data Management Plan

    Broader source: Energy.gov [DOE]

    This page lists the suggested elements of an EERE data management plan including data types and sources, content and format, sharing and preservation, protection and rationale.

  5. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked...

  6. Stagnation Region Heat Transfer Augmentation at Very High Turbulence Levels

    SciTech Connect (OSTI)

    Ames, Forrest; Kingery, Joseph E.

    2015-06-17

    A database for stagnation region heat transfer has been extended to include heat transfer measurements acquired downstream from a new high intensity turbulence generator. This work was motivated by gas turbine industry heat transfer designers who deal with heat transfer environments with increasing Reynolds numbers and very high turbulence levels. The new mock aero-combustor turbulence generator produces turbulence levels which average 17.4%, which is 37% higher than the older turbulence generator. The increased level of turbulence is caused by the reduced contraction ratio from the liner to the exit. Heat transfer measurements were acquired on two large cylindrical leading edge test surfaces having a four to one range in leading edge diameter (40.64 cm and 10.16 cm). Gandvarapu and Ames [1] previously acquired heat transfer measurements for six turbulence conditions including three grid conditions, two lower turbulence aero-combustor conditions, and a low turbulence condition. The data are documented and tabulated for an eight to one range in Reynolds numbers for each test surface with Reynolds numbers ranging from 62,500 to 500,000 for the large leading edge and 15,625 to 125,000 for the smaller leading edge. The data show augmentation levels of up to 136% in the stagnation region for the large leading edge. This heat transfer rate is an increase over the previous aero-combustor turbulence generator which had augmentation levels up to 110%. Note, the rate of increase in heat transfer augmentation decreases for the large cylindrical leading edge inferring only a limited level of turbulence intensification in the stagnation region. The smaller cylindrical leading edge shows more consistency with earlier stagnation region heat transfer results correlated on the TRL (Turbulence, Reynolds number, Length scale) parameter. The downstream regions of both test surfaces continue to accelerate the flow but at a much lower rate than the leading edge. Bypass transition occurs

  7. February 2016 Office of Chief Financial Officer

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

    6 DOE/CF-0124 Volume 6 Power Marketing Administrations Southeastern Power Administration Southwestern Power Administration Western Area Power Administration Bonneville Power Administration Department of Energy FY 2017 Congressional Budget Request February 2016 Office of Chief Financial Officer Volume 6 DOE/CF-0124 Volume 6 Power Marketing Administrations Southeastern Power Administration Southwestern Power Administration Western Area Power Administration Bonneville Power Administration Printed

  8. One-dimensional turbulence modeling of a turbulent counterflow flame with comparison to DNS

    SciTech Connect (OSTI)

    Jozefik, Zoltan; Kerstein, Alan R.; Schmidt, Heiko; Lyra, Sgouria; Kolla, Hemanth; Chen, Jackie H.

    2015-06-01

    The one-dimensional turbulence (ODT) model is applied to a reactant-to-product counterflow configuration and results are compared with DNS data. The model employed herein solves conservation equations for momentum, energy, and species on a one dimensional (1D) domain corresponding to the line spanning the domain between nozzle orifice centers. The effects of turbulent mixing are modeled via a stochastic process, while the Kolmogorov and reactive length and time scales are explicitly resolved and a detailed chemical kinetic mechanism is used. Comparisons between model and DNS results for spatial mean and root-meansquare (RMS) velocity, temperature, and major and minor species profiles are shown. The ODT approach shows qualitatively and quantitatively reasonable agreement with the DNS data. Scatter plots and statistics conditioned on temperature are also compared for heat release rate and all species. ODT is able to capture the range of results depicted by DNS. However, conditional statistics show signs of underignition.

  9. Particle dispersion in homogeneous turbulence using the one-dimensional turbulence model

    SciTech Connect (OSTI)

    Sun, Guangyuan; Lignell, David O.; Hewson, John C.; Gin, Craig R.

    2014-10-09

    Lagrangian particle dispersion is studied using the one-dimensional turbulence (ODT) model in homogeneous decaying turbulence configurations. The ODT model has been widely and successfully applied to a number of reacting and nonreacting flow configurations, but only limited application has been made to multiphase flows. We present a version of the particle implementation and interaction with the stochastic and instantaneous ODT eddy events. The model is characterized by comparison to experimental data of particle dispersion for a range of intrinsic particle time scales and body forces. Particle dispersion, velocity, and integral time scale results are presented. Moreover, the particle implementation introduces a single model parameter β p , and sensitivity to this parameter and behavior of the model are discussed. Good agreement is found with experimental data and the ODT model is able to capture the particle inertial and trajectory crossing effects. Our results serve as a validation case of the multiphase implementations of ODT for extensions to other flow configurations.

  10. The effect of solids concentration on self-induced turbulence

    SciTech Connect (OSTI)

    Kenning, V.; Crowe, C.T.

    1994-12-31

    A model to predict the turbulence intensity due to the solid particles in a simple flow has been developed. The flow is one in which all the turbulence is due to the presence of the particles. The model accounts for energy input through the loss of potential energy by the solid particles and energy loss by turbulent dissipation. The predictions are compared for various solids concentrations and particle sizes. The peak turbulence intensity is seen to b3e reached faster for higher solid concentrations. The peak is also higher for higher concentrations. In all cases, a peak value of turbulent intensity is reached if the supply of particles is maintained. The case in which the supply of particles are no longer available to supply the turbulence with energy. When normalized by the peak value, the turbulence was seen to decay more rapidly for higher concentrations of solid particles in the present model. An experimental study will be conducted to compare with the current model.

  11. Assessment of a hybrid finite element and finite volume code for turbulent incompressible flows

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

    Xia, Yidong; Wang, Chuanjin; Luo, Hong; Christon, Mark; Bakosi, Jozsef

    2015-12-15

    Hydra-TH is a hybrid finite-element/finite-volume incompressible/low-Mach flow simulation code based on the Hydra multiphysics toolkit being developed and used for thermal-hydraulics applications. In the present work, a suite of verification and validation (V&V) test problems for Hydra-TH was defined to meet the design requirements of the Consortium for Advanced Simulation of Light Water Reactors (CASL). The intent for this test problem suite is to provide baseline comparison data that demonstrates the performance of the Hydra-TH solution methods. The simulation problems vary in complexity from laminar to turbulent flows. A set of RANS and LES turbulence models were used in themore » simulation of four classical test problems. Numerical results obtained by Hydra-TH agreed well with either the available analytical solution or experimental data, indicating the verified and validated implementation of these turbulence models in Hydra-TH. Where possible, we have attempted some form of solution verification to identify sensitivities in the solution methods, and to suggest best practices when using the Hydra-TH code.« less

  12. Assessment of a hybrid finite element and finite volume code for turbulent incompressible flows

    SciTech Connect (OSTI)

    Xia, Yidong; Wang, Chuanjin; Luo, Hong; Christon, Mark; Bakosi, Jozsef

    2015-12-15

    Hydra-TH is a hybrid finite-element/finite-volume incompressible/low-Mach flow simulation code based on the Hydra multiphysics toolkit being developed and used for thermal-hydraulics applications. In the present work, a suite of verification and validation (V&V) test problems for Hydra-TH was defined to meet the design requirements of the Consortium for Advanced Simulation of Light Water Reactors (CASL). The intent for this test problem suite is to provide baseline comparison data that demonstrates the performance of the Hydra-TH solution methods. The simulation problems vary in complexity from laminar to turbulent flows. A set of RANS and LES turbulence models were used in the simulation of four classical test problems. Numerical results obtained by Hydra-TH agreed well with either the available analytical solution or experimental data, indicating the verified and validated implementation of these turbulence models in Hydra-TH. Where possible, we have attempted some form of solution verification to identify sensitivities in the solution methods, and to suggest best practices when using the Hydra-TH code.

  13. Identifying Turbulent Structures through Topological Segmentation

    SciTech Connect (OSTI)

    Bremer, Peer-Timo; Gruber, Andrea; Bennett, Janine C.; Gyulassy, Attila; Kolla, Hemanth; Chen, Jacqueline H.; Grout, Ray W.

    2016-01-01

    A new method of extracting vortical structures from a turbulent flow is proposed whereby topological segmentation of an indicator function scalar field is used to identify the regions of influence of the individual vortices. This addresses a long-standing challenge in vector field topological analysis: indicator functions commonly used produce a scalar field based on the local velocity vector field; reconstructing regions of influence for a particular structure requires selecting a threshold to define vortex extent. In practice, the same threshold is rarely meaningful throughout a given flow. By also considering the topology of the indicator field function, the characteristics of vortex strength and extent can be separated and the ambiguity in the choice of the threshold reduced. The proposed approach is able to identify several types of vortices observed in a jet in cross-flow configuration simultaneously where no single threshold value for a selection of common indicator functions appears able to identify all of these vortex types.

  14. Admiralty Inlet Advanced Turbulence Measurements: May 2015

    SciTech Connect (OSTI)

    Kilcher, Levi

    2015-05-18

    This data is from measurements at Admiralty Head, in Admiralty Inlet (Puget Sound) in May of 2015. The measurements were made using Inertial Motion Unit (IMU) equipped ADVs mounted on a 'StableMoor' (Manufacturer: DeepWater Buoyancy) buoy and a Tidal Turbulence Mooring (TTM). These platforms position ADV heads above the seafloor to make mid-depth turbulence measurements. The inertial measurements from the IMU allows for removal of mooring motion in post processing. The mooring and buoy motion has been removed from the stream-wise and vertical velocity signals (u, w). The lateral (v) velocity has some 'persistent motion contamination' due to mooring sway. The TTM was deployed with one ADV, it's position was: 48 09.145', -122 41.209' The StableMoor was deployed twice, the first time it was deployed in 'wing-mode' with two ADVs ('Port' and 'Star') at: 48 09.166', -122 41.173' The second StableMoor deployment was in 'Nose' mode with one ADV at: 48 09.166', -122 41.174' Units ----- - Velocity data (_u, urot, uacc) is in m/s. - Acceleration (Accel) data is in m/s^2. - Angular rate (AngRt) data is in rad/s. - The components of all vectors are in 'ENU' orientation. That is, the first index is True East, the second is True North, and the third is Up (vertical). - All other quantities are in the units defined in the Nortek Manual. Motion correction and rotation into the ENU earth reference frame was performed using the Python-based open source DOLfYN library (http://lkilcher.github.io/dolfyn/). Details on motion correction can be found there. Additional details on TTM measurements at this site can be found in the included Marine Energy Technology Symposium paper.

  15. Quantitative imaging of turbulent and reacting flows

    SciTech Connect (OSTI)

    Paul, P.H.

    1993-12-01

    Quantitative digital imaging, using planar laser light scattering techniques is being developed for the analysis of turbulent and reacting flows. Quantitative image data, implying both a direct relation to flowfield variables as well as sufficient signal and spatial dynamic range, can be readily processed to yield two-dimensional distributions of flowfield scalars and in turn two-dimensional images of gradients and turbulence scales. Much of the development of imaging techniques to date has concentrated on understanding the requisite molecular spectroscopy and collision dynamics to be able to determine how flowfield variable information is encoded into the measured signal. From this standpoint the image is seen as a collection of single point measurements. The present effort aims at realizing necessary improvements in signal and spatial dynamic range, signal-to-noise ratio and spatial resolution in the imaging system as well as developing excitation/detection strategies which provide for a quantitative measure of particular flowfield scalars. The standard camera used for the study is an intensified CCD array operated in a conventional video format. The design of the system was based on detailed modeling of signal and image transfer properties of fast UV imaging lenses, image intensifiers and CCD detector arrays. While this system is suitable for direct scalar imaging, derived quantities (e.g. temperature or velocity images) require an exceptionally wide dynamic range imaging detector. To apply these diagnostics to reacting flows also requires a very fast shuttered camera. The authors have developed and successfully tested a new type of gated low-light level detector. This system relies on fast switching of proximity focused image-diode which is direct fiber-optic coupled to a cooled CCD array. Tests on this new detector show significant improvements in detection limit, dynamic range and spatial resolution as compared to microchannel plate intensified arrays.

  16. Admiralty Inlet Advanced Turbulence Measurements: June 2014

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kilcher, Levi

    2014-06-30

    This data is from measurements at Admiralty Head, in Admiralty Inlet (Puget Sound) in June of 2014. The measurements were made using Inertial Motion Unit (IMU) equipped ADVs mounted on Tidal Turbulence Mooring's (TTMs). The TTM positions the ADV head above the seafloor to make mid-depth turbulence measurements. The inertial measurements from the IMU allows for removal of mooring motion in post processing. The mooring motion has been removed from the stream-wise and vertical velocity signals (u, w). The lateral (v) velocity has some 'persistent motion contamination' due to mooring sway. Each ttm was deployed with two ADVs. The 'top' ADV head was positioned 0.5m above the 'bottom' ADV head. The TTMs were placed in 58m of water. The position of the TTMs were: ttm01 : (48.1525, -122.6867) ttm01b : (48.15256666, -122.68678333) ttm02b : (48.152783333, -122.686316666) Deployments TTM01b and TTM02b occurred simultaneously and were spaced approximately 50m apart in the cross-stream direction. Units ----- - Velocity data (_u, urot, uacc) is in m/s. - Acceleration (Accel) data is in m/s^2. - Angular rate (AngRt) data is in rad/s. - The components of all vectors are in 'ENU' orientation. That is, the first index is True East, the second is True North, and the third is Up (vertical). - All other quantities are in the units defined in the Nortek Manual. Motion correction and rotation into the ENU earth reference frame was performed using the Python-based open source DOLfYN library (http://lkilcher.github.io/dolfyn/). Details on motion correction can be found there. Additional details on TTM measurements at this site can be found in the included Marine Energy Technology Symposium paper.

  17. Dynamic Multiscale Averaging (DMA) of Turbulent Flow

    SciTech Connect (OSTI)

    Richard W. Johnson

    2012-09-01

    A new approach called dynamic multiscale averaging (DMA) for computing the effects of turbulent flow is described. The new method encompasses multiple applications of temporal and spatial averaging, that is, multiscale operations. Initially, a direct numerical simulation (DNS) is performed for a relatively short time; it is envisioned that this short time should be long enough to capture several fluctuating time periods of the smallest scales. The flow field variables are subject to running time averaging during the DNS. After the relatively short time, the time-averaged variables are volume averaged onto a coarser grid. Both time and volume averaging of the describing equations generate correlations in the averaged equations. These correlations are computed from the flow field and added as source terms to the computation on the next coarser mesh. They represent coupling between the two adjacent scales. Since they are computed directly from first principles, there is no modeling involved. However, there is approximation involved in the coupling correlations as the flow field has been computed for only a relatively short time. After the time and spatial averaging operations are applied at a given stage, new computations are performed on the next coarser mesh using a larger time step. The process continues until the coarsest scale needed is reached. New correlations are created for each averaging procedure. The number of averaging operations needed is expected to be problem dependent. The new DMA approach is applied to a relatively low Reynolds number flow in a square duct segment. Time-averaged stream-wise velocity and vorticity contours from the DMA approach appear to be very similar to a full DNS for a similar flow reported in the literature. Expected symmetry for the final results is produced for the DMA method. The results obtained indicate that DMA holds significant potential in being able to accurately compute turbulent flow without modeling for practical

  18. POLICY FLASH 2013-58 Revised Guide for Financial Assistance ...

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

    POLICY FLASH 2013-58 Revised Guide for Financial Assistance POLICY FLASH 2013-58 Revised Guide for Financial Assistance Questions concerning this policy flash should be directed to...

  19. Financial Assistance Letters No. FAL 2006-04 | Department of...

    Office of Environmental Management (EM)

    Letters No. FAL 2006-04 Financial Assistance Letters No. FAL 2006-04 Financial Assistance Letters Remaining in Effect. PDF icon FAL 2006-041.pdf More Documents & Publications ...

  20. Office of the Chief Financial Officer Organization Chart | Department of

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

    Energy About Us » Office of the Chief Financial Officer Organization Chart Office of the Chief Financial Officer Organization Chart OCFOFrontOffice2015.jpg Leadership Organization Contact Us

  1. On apparent temperature in low-frequency Alfvenic turbulence

    SciTech Connect (OSTI)

    Nariyuki, Yasuhiro

    2012-08-15

    Low-frequency, parallel propagating Alfvenic turbulence in collisionless plasmas is theoretically studied. Alfvenic turbulence is derived as an equilibrium state (Beltrami field) in the magnetohydrodynamic equations with the pressure anisotropy and multi-species of ions. It is shown that the conservation of the total 'apparent temperature' corresponds to the Bernoulli law. A simple model of the radially expanding solar wind including Alfvenic turbulence is also discussed. The conversion of the wave energy in the 'apparent temperature' into the 'real temperature' is facilitated with increasing radial distance.

  2. Edge Turbulence Velocity Changes with Lithium Coating on NSTX

    SciTech Connect (OSTI)

    Cao, A.; Zweben, S. J.; Stotler, D. P.; Bell, M.; Diallo, A.; Kaye, S. M.; LeBlanc, B.

    2012-08-10

    Lithium coating improves energy confinement and eliminates edge localized modes in NSTX, but the mechanism of this improvement is not yet well understood. We used the gas-puff-imaging (GPI) diagnostic on NSTX to measure the changes in edge turbulence which occurred during a scan with variable lithium wall coating, in order to help understand the reason for the confinement improvement with lithium. There was a small increase in the edge turbulence poloidal velocity and a decrease in the poloidal velocity fluctuation level with increased lithium. The possible effect of varying edge neutral density on turbulence damping was evaluated for these cases in NSTX. __________________________________________________

  3. Multi-Scale Simulations Solve a Plasma Turbulence Mystery

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

    Multi-Scale Simulations Solve a Plasma Turbulence Mystery Multi-Scale Simulations Solve a Plasma Turbulence Mystery Coupled Model Reproduces Experimental Electron Heat Losses March 7, 2016 Contact: Kathy Kincade, kkincade@lbl.gov, +1 510 495 2124 turb cross High-res image of the inside of the Alcator C-Mod tokamak, with a representative cross-section of a plasma. The inset shows the approximate domain for one of the multi-scale simulations and a graphic of the plasma turbulence in the

  4. Establishing & Maintaining a Strategic Partnership with the Chief Financial

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

    Officer | Department of Energy Establishing & Maintaining a Strategic Partnership with the Chief Financial Officer Establishing & Maintaining a Strategic Partnership with the Chief Financial Officer Neal Elliot of the American Council for an Energy-Efficient Economy shares insights on how to establish and maintain a partnership with the Chief Financial Officer on this presentation. Establishing & Maintaining a Strategic Partnership with the Chief Financial Officer (August 9,

  5. Financial Statement: IG-FS-CA-06-04

    Broader source: Energy.gov [DOE]

    Review of Actions to Correct Financial Control and Reporting Weaknesses; Audit Report No: OAS-FS/CA-06-04

  6. Financial Metrics Data Collection Protocol, Version 1.0

    SciTech Connect (OSTI)

    Fowler, Kimberly M.; Gorrissen, Willy J.; Wang, Na

    2010-04-30

    Brief description of data collection process and plan that will be used to collect financial metrics associated with sustainable design.

  7. Financial Assistance Letter (FAL) 2008-01 | Department of Energy

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

    Financial Assistance Letter (FAL) 2008-01 Financial Assistance Letter (FAL) 2008-01 PF2008-51.pdf (2.93 MB) PF2008-51a - Attachment - Financial Assistance Letter (FAL) 2008-01 - Implementation Guidance for the Government-wide Research Terms and Conditions (495 KB) More Documents & Publications Acquisition Career Management Handbook Change - Revised Contracting Officer's Representative Certification (COR) Acquisition Letter/ Financial Assistance Letter (AL/FAL 2010-05) - Contract Periods of

  8. Current Fuel Cell Technologies Office Financial Opportunities | Department

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

    of Energy Financial Opportunities » Current Fuel Cell Technologies Office Financial Opportunities Current Fuel Cell Technologies Office Financial Opportunities Current hydrogen-related funding opportunities through the U.S. Department of Energy's (DOE) Fuel Cell Technologies Office (FCTO) are listed below. FCTO offers opportunities for both financial and technical assistance. Although FCTO attempts to maintain current information on these solicitations, the official source for funding

  9. Cost Principles and Special Terms and Conditions for DOE Financial

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

    Assistance Recipients | Department of Energy Cost Principles and Special Terms and Conditions for DOE Financial Assistance Recipients Cost Principles and Special Terms and Conditions for DOE Financial Assistance Recipients DOE Financial Assistance presentation at the 2012 Peer Review Meeting gtp_2012peerreview_financial_assist.pdf (112.34 KB) More Documents & Publications Sample Indirect Rate Proposal (Pre-Award) and For-Profit Compliance Audit Information Audit Report: OAS-M-14-05

  10. Financial Risk, Policy & Controls | Department of Energy

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

    Financial Risk, Policy & Controls Financial Risk, Policy & Controls The mission of the Office of Financial Risk, Policy and Controls (CF-50) is to contribute to the effective management of the financial resources of the Department of Energy by working in collaboration with our stakeholders, we will achieve the shared goal of continuous process improvement while complying with federal regulations. As stewards of taxpayers' money, we will be an objective source of internal controls

  11. ISU offering Financial Building Blocks sessions | The Ames Laboratory

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

    ISU offering Financial Building Blocks sessions Money is often considered the number one stressor. Your relationships, focus, safety and physical health may be impacted. Reduce the stress in your life by getting your finances under control. Build your financial knowledge and your skills. Iowa State University is offering five sessions geared towards informing employees how to build a sound financial future. The sessions will be presented by Brian Hood, a CFP from the Legacy Financial Group. As a

  12. Webtrends Archives by Fiscal Year — Financial Opportunities

    Office of Energy Efficiency and Renewable Energy (EERE)

    From the EERE Web Statistics Archive: Corporate sites, Webtrends archives for the Financial Opportunities site by fiscal year.

  13. Acquisition & Financial Assistance Rules Status | Department of Energy

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

    Acquisition & Financial Assistance Rules Status Acquisition & Financial Assistance Rules Status Subscribe to Acquisition & Financial Assistance Rules Status Updates Acquisition & Financial Assistance Rules Status July 2016 2nd Update (192.52 KB) More Documents & Publications Rulemaking List for Public List Serve May 2016 Department of Energy Acquisition Regulation (DEAR) Final Rule for changes to Parts 908, 945, 952, and 970 regarding Government Property 15th Semi-Annual

  14. American Recovery and Reinvestment Act, Financial Assistance Award: 212

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

    Degrees Consulting, LLC | Department of Energy American Recovery and Reinvestment Act, Financial Assistance Award: 212 Degrees Consulting, LLC American Recovery and Reinvestment Act, Financial Assistance Award: 212 Degrees Consulting, LLC American Recovery and Reinvestment Act, Financial Assistance Award: 212 Degrees Consulting, LLC, Las Vegas, Nevada. Award No. DE-FC36-10GO10589, Notice of Financial Assistance Award (110.94 KB) Award No. DE-FC36-10GO10589, Special Terms and Conditions

  15. Assessment of Acquisition and Financial Assistance Operations | Department

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

    of Energy Acquisition and Financial Assistance Operations Assessment of Acquisition and Financial Assistance Operations The Department of Energy's Office of Energy Efficiency and Renewable Energy's Assessment of Acquisition and Financial Assistance Operations, in coordination with the National Academy of Public Administration. Assessment of Acquisition and Financial Assistance Operations (754.94 KB) More Documents & Publications Reorganization of the Office of Energy Efficiency and

  16. DOE Template Financial Institution RFP | Department of Energy

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

    Template Financial Institution RFP DOE Template Financial Institution RFP Request for Proposals (RFP) for Residential Energy Efficiency Loan Facilities, forms and instructions, as posted on the U.S. Department of Energy's Better Buildings Neighborhood Program website. DOE Template Financial Institution RFP (1.42 MB) More Documents & Publications Financial Institution Request for Proposals for Residential Energy Efficiency Loan Facilities Template Energy Efficiency Loan Program Agreement

  17. Financial Assistance Forms and Information For Applicants and Recipients |

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

    Department of Energy Financial Assistance Forms and Information For Applicants and Recipients Financial Assistance Forms and Information For Applicants and Recipients Please check the financial opportunity notice before completing and submitting any of these forms. Award Form Financial Assistance Reporting Checklist and Instructions, DOE F 4600.2 Includes Research Performance Progress Report (RPPR) Award Terms National Policy Assurances to be Incorporated as Award Terms Standard Intellectual

  18. Office of the Chief Financial Officer | Department of Energy

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

    Office of the Chief Financial Officer Welcome to the U.S. Department of Energy, Office of the Chief Financial Officer. The mission of the Office of the Chief Financial Officer is to assure the effective management and financial integrity of Department of Energy programs, activities, and resources by developing and implementing and monitoring Department-wide policies and systems in the areas of budget administration, program analysis and evaluation, finance and accounting, internal controls,

  19. Utility-Scale Financial Incentives and Programs Resources | Department of

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

    Energy Utility-Scale Financial Incentives and Programs Resources Utility-Scale Financial Incentives and Programs Resources Incentive programs for utility-scale projects are highly individualized. The most effective states have coupled renewable portfolio standards (RPS) with financial mechanisms such as tax benefits, clean energy fund grants, etc. to encourage and support development of large-scale projects within their borders. Find financial incentives and programs resources below. Federal

  20. Office of Acquisition and Financial Assessment PIA, Golden Field Office |

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

    Department of Energy Acquisition and Financial Assessment PIA, Golden Field Office Office of Acquisition and Financial Assessment PIA, Golden Field Office Office of Acquisition and Financial Assessment PIA, Golden Field Office Office of Acquisition and Financial Assessment PIA, Golden Field Office (245.98 KB) More Documents & Publications Integrated Safety Management Workshop Registration, PIA, Idaho National Laboratory Occupational Medicine - Assistant PIA, Idaho National Laboratory

  1. Office of the Assistant General Counsel for Procurement and Financial

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

    Assistance | Department of Energy Services » Transactions, Technology and Contractor Human Resources » Office of the Assistant General Counsel for Procurement and Financial Assistance Office of the Assistant General Counsel for Procurement and Financial Assistance The Office of the Assistant General Counsel for Procurement and Financial Assistance provides legal support and advice regarding the Department's massive contractual expenditures and financial assistance policy and activities.

  2. Structural and functional analysis of Nup120 suggests ring formation...

    Office of Scientific and Technical Information (OSTI)

    Title: Structural and functional analysis of Nup120 suggests ring formation of the Nup84 complex Authors: Seo, Hyuk-Soo ; Ma, Yingli ; Debler, Erik W. ; Wacker, Daniel ; Kutik, ...

  3. Simulations by PPPL physicists suggest that external magnetic fields can

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

    calm plasma instabilities | Princeton Plasma Physics Lab Simulations by PPPL physicists suggest that external magnetic fields can calm plasma instabilities By Raphael Rosen August 15, 2016 Tweet Widget Google Plus One Share on Facebook Magnetic Perturbations (Photo by Gerrit Kramer) Magnetic Perturbations Physicists led by Gerrit Kramer at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) have conducted simulations that suggest that applying magnetic fields to

  4. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Wednesday, 26 January 2011 00:00 Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked chromosomes. These enzymes are also exploited clinically as targets of antibiotics and anticancer therapeutics. Researchers at ALS Beamline 8.3.1 imaged type II topoisomerase's ordinarily short-lived state in which it is linked

  5. Simulations by PPPL physicists suggest that external magnetic fields can

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

    calm plasma instabilities | Princeton Plasma Physics Lab Simulations by PPPL physicists suggest that external magnetic fields can calm plasma instabilities By Raphael Rosen August 15, 2016 Tweet Widget Google Plus One Share on Facebook Magnetic Perturbations (Photo by Gerrit Kramer) Magnetic Perturbations Physicists led by Gerrit Kramer at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) have conducted simulations that suggest that applying magnetic fields to

  6. Scientists use plasma shaping to control turbulence in stellarators...

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

    could also apply to their more widely used symmetrical donut-shaped cousins called tokamaks. This work was supported by the DOE Office of Science. Turbulence allows the hot,...

  7. Test particle study of ion transport in drift type turbulence

    SciTech Connect (OSTI)

    Vlad, M.; Spineanu, F.

    2013-12-15

    Ion transport regimes in drift type turbulence are determined in the frame of a realistic model for the turbulence spectrum based on numerical simulations. The model includes the drift of the potential with the effective diamagnetic velocity, turbulence anisotropy, and dominant waves. The effects of the zonal flow modes are also analyzed. A semi-analytical method that is able to describe trajectory stochastic trapping or eddying is used for obtaining the transport coefficients as function of the parameters of the turbulence. Analytical approximations of the transport coefficients are derived from the results. They show the transition from Bohm to gyro-Bohm scaling as plasma size increases in very good agreement with the numerical simulations.

  8. Assessment of Combustion and Turbulence Models for the Simulation...

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

    Various applied combustion and turbulence models were investigated along with chemical kinetic mechanisms simulating a biodiesel-fueled engine deer09ren.pdf (497.22 KB) More ...

  9. Survey and Analysis of Multiresolution Methods for Turbulence...

    Office of Scientific and Technical Information (OSTI)

    Survey and Analysis of Multiresolution Methods for Turbulence Data Citation Details In-Document ... DOE Contract Number: AC52-06NA25396 Resource Type: Technical Report Research Org: ...

  10. Magnetohydrodynamical turbulence in Star and Planet Formation | Princeton

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

    Plasma Physics Lab March 7, 2007, 4:15pm to 5:15pm Colloquia Magnetohydrodynamical turbulence in Star and Planet Formation Dr. Mordecai-Mark Mac Low, Department of Astrophysics American Museum of Natural History

  11. Experimental signatures of localization in Langmuir wave turbulence

    SciTech Connect (OSTI)

    Rose, H.A.; DuBois, D.F.; Russell, D.; Bezzerides, B.

    1988-01-01

    Features in certain laser-plasma and ionospheric experiments are identified with the basic properties of Langmuir wave turbulence. Also, a model of caviton nucleation is presented which leads to certain novel scaling predictions. 12 refs., 19 figs.

  12. RF wave propagation and scattering in turbulent tokamak plasmas

    SciTech Connect (OSTI)

    Horton, W. Michoski, C.; Peysson, Y.; Decker, J.

    2015-12-10

    Drift wave turbulence driven by the steep electron and ion temperature gradients in H-mode divertor tokamaks produce scattering of the RF waves used for heating and current drive. The X-ray emission spectra produced by the fast electrons require the turbulence broaden RF wave spectrum. Both the 5 GHz Lower Hybrid waves and the 170 GHz electron cyclotron [EC] RF waves experience scattering and diffraction by the electron density fluctuations. With strong LHCD there are bifurcations in the coupled turbulent transport dynamics giving improved steady-state confinement states. The stochastic scattering of the RF rays makes the prediction of the distribution of the rays and the associated particle heating a statistical problem. Thus, we introduce a Fokker-Planck equation for the probably density of the RF rays. The general frame work of the coupled system of coupled high frequency current driving rays with the low-frequency turbulent transport determines the profiles of the plasma density and temperatures.

  13. TURBULENT CONVECTION IN STELLAR INTERIORS. III. MEAN-FIELD ANALYSIS...

    Office of Scientific and Technical Information (OSTI)

    The numerical models are analyzed in the framework of one-dimensional Reynolds-Averaged ... We clarify the driving sources of kinetic energy, and show that the rate of turbulent ...

  14. February 2016 Office of Chief Financial Officer

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

    4 DOE/CF-0122 Volume 4 Science Advanced Research Projects Agency-Energy Department of Energy FY 2017 Congressional Budget Request February 2016 Office of Chief Financial Officer Volume 4 DOE/CF-0122 Volume 4 Science Advanced Research Projects Agency-Energy Printed with soy ink on recycled paper Department of Energy FY 2017 Congressional Budget Request Volume 4 Table of Contents Page Appropriation Account Summary

  15. Federal financial assistance for hydroelectric power

    SciTech Connect (OSTI)

    Not Available

    1980-09-01

    The Rural Energy Initiative seeks to maximize the effectiveness of Federal programs in developing certain energy resources, including small-scale hydropower. The REI target is to arrange financing for 100 hydro sites by 1981, with about 300 MWe of additional capacity. The REI financial assistance programs for small hydropower development in the US DOE; Economic Development Administration; REA; HUD; Farmers Home Administration; DOI; DOL's CETA programs; and the Community Services Administration are described. (MCW)

  16. Scientists use plasma shaping to control turbulence in stellarators |

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

    Princeton Plasma Physics Lab Scientists use plasma shaping to control turbulence in stellarators By John Greenwald October 21, 2014 Tweet Widget Google Plus One Share on Facebook Magnetic field strength in the turbulence-optimized MPX stellarator design with regions of the highest strength shown in yellow. The MPX design is named for coauthors Harry Mynick and Neil Pomphrey of PPPL and Pavlos Xanthopoulos of the Max Planck Institute of Plasma Physics. Magnetic field strength in the

  17. Scientists use plasma shaping to control turbulence in stellarators |

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

    Princeton Plasma Physics Lab Scientists use plasma shaping to control turbulence in stellarators By John Greenwald October 21, 2014 Tweet Widget Google Plus One Share on Facebook Magnetic field strength in the turbulence-optimized MPX stellarator design with regions of the highest strength shown in yellow. The MPX design is named for coauthors Harry Mynick and Neil Pomphrey of PPPL and Pavlos Xanthopoulos of the Max Planck Institute of Plasma Physics. Magnetic field strength in the

  18. Numerical Simulations of Small Non-spherical Particles in Turbulence |

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

    Argonne Leadership Computing Facility Numerical Simulations of Small Non-spherical Particles in Turbulence Event Sponsor: Mathematics and Computer Science Division LANS Seminar Start Date: Aug 31 2016 - 3:00pm Building/Room: Building 240/Room 1404-1405 Location: Argonne National Laboratory Speaker(s): Nimish Pujara Speaker(s) Title: UC Berkeley Motivated by the ubiquity of natural particles in turbulent flows in the natural environment as well as in many industrial processes, we investigate

  19. Petascale Simulations of Inhomogeneous Alfven Turbulence in the Solar Wind

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

    | Argonne Leadership Computing Facility Petascale Simulations of Inhomogeneous Alfven Turbulence in the Solar Wind PI Name: Jean C Perez PI Email: jeanc.perez@unh.edu Institution: University of New Hampshire Allocation Program: INCITE Allocation Hours at ALCF: 10,000,000 Year: 2012 Research Domain: Physics This project's large-scale numerical simulations of Alfvén wave (AW) turbulence in the outermost atmosphere of the sun will lead to new insights into the basic properties of inhomogeneous

  20. Petascale Simulations of Inhomogeneous Alfven Turbulence in the Solar Wind

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

    | Argonne Leadership Computing Facility A snapshot of turbulent magnetic field lines (red) inside a coronal hole that expands from a small patch on the solar surface to 5 solar radii A snapshot of turbulent magnetic field lines (red) inside a coronal hole that expands from a small patch on the solar surface to 5 solar radii. Alfven waves (AW), launched by convective motions on the photosphere, propagate in the inhomogeneous Solar atmosphere producing primary reflected waves that interact

  1. Direct Numerical Simulations of High Reynolds Number Turbulent Channel Flow

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

    | Argonne Leadership Computing Facility Visualization of the spanwise vorticity in a turbulent channel. S. Hoyas and O. Flores while they were at Universidad Politecnica de Madrid Direct Numerical Simulations of High Reynolds Number Turbulent Channel Flow PI Name: Robert Moser PI Email: rmoser@ices.utexas.edu Institution: University of Texas Allocation Program: INCITE Allocation Hours at ALCF: 175 Million Year: 2013 Research Domain: Engineering Approximately 28% of U.S. energy resources are

  2. Spectral Slope of MHD Turbulence | Argonne Leadership Computing Facility

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

    Spectral Slope of MHD Turbulence PI Name: Andrey Beresnyak PI Email: andrey.at.astro@gmail.com Institution: Los Alamos National Laboratory Allocation Program: INCITE Allocation Hours at ALCF: 35 Million Year: 2013 Research Domain: Physics MHD turbulence has attracted attention of astronomers since mid 1960s. As most astrophysical media are ionized, plasmas are coupled to the magnetic fields. A simple one-fluid description known as magnetohydrodynamics (MHD) is broadly applicable to most

  3. Survey and analysis of multiresolution methods for turbulence data

    SciTech Connect (OSTI)

    Pulido, Jesus; Livescu, Daniel; Woodring, Jonathan; Ahrens, James; Hamann, Bernd

    2015-11-10

    This paper compares the effectiveness of various multi-resolution geometric representation methods, such as B-spline, Daubechies, Coiflet and Dual-tree wavelets, curvelets and surfacelets, to capture the structure of fully developed turbulence using a truncated set of coefficients. The turbulence dataset is obtained from a Direct Numerical Simulation of buoyancy driven turbulence on a 5123 mesh size, with an Atwood number, A = 0.05, and turbulent Reynolds number, Ret = 1800, and the methods are tested against quantities pertaining to both velocities and active scalar (density) fields and their derivatives, spectra, and the properties of constant density surfaces. The comparisons between the algorithms are given in terms of performance, accuracy, and compression properties. The results should provide useful information for multi-resolution analysis of turbulence, coherent feature extraction, compression for large datasets handling, as well as simulations algorithms based on multi-resolution methods. In conclusion, the final section provides recommendations for best decomposition algorithms based on several metrics related to computational efficiency and preservation of turbulence properties using a reduced set of coefficients.

  4. Numerical calculation of two-phase turbulent jets

    SciTech Connect (OSTI)

    Saif, A.A.

    1995-05-01

    Two-phase turbulent round jets were numerically simulated using a multidimensional two-phase CFD code based on the two-fluid model. The turbulence phenomena were treated with the standard k-{epsilon} model. It was modified to take into account the additional dissipation of turbulent kinetic energy by the dispersed phase. Within the context of the two-fluid model it is more appropriate and physically justified to treat the diffusion by an interfacial force in the momentum equation. In this work, the diffusion force and the additional dissipation effect by the dispersed phase were modeled starting from the classical turbulent energy spectrum analysis. A cut-off frequency was proposed to decrease the dissipation effect by the dispersed phase when large size particles are introduced in the flow. The cut-off frequency combined with the bubble-induced turbulence effect allows for an increase in turbulence for large particles. Additional care was taken in choosing the right kind of experimental data from the literature so that a good separate effect test was possible for their models. The models predicted the experimental data very closely and they were general enough to predict extreme limit cases: water-bubble and air-droplet jets.

  5. SCALING PROPERTIES OF SMALL-SCALE FLUCTUATIONS IN MAGNETOHYDRODYNAMIC TURBULENCE

    SciTech Connect (OSTI)

    Perez, Jean Carlos; Mason, Joanne; Boldyrev, Stanislav; Cattaneo, Fausto E-mail: j.mason@exeter.ac.uk E-mail: cattaneo@flash.uchicago.edu

    2014-09-20

    Magnetohydrodynamic (MHD) turbulence in the majority of natural systems, including the interstellar medium, the solar corona, and the solar wind, has Reynolds numbers far exceeding the Reynolds numbers achievable in numerical experiments. Much attention is therefore drawn to the universal scaling properties of small-scale fluctuations, which can be reliably measured in the simulations and then extrapolated to astrophysical scales. However, in contrast with hydrodynamic turbulence, where the universal structure of the inertial and dissipation intervals is described by the Kolmogorov self-similarity, the scaling for MHD turbulence cannot be established based solely on dimensional arguments due to the presence of an intrinsic velocity scale—the Alfvén velocity. In this Letter, we demonstrate that the Kolmogorov first self-similarity hypothesis cannot be formulated for MHD turbulence in the same way it is formulated for the hydrodynamic case. Besides profound consequences for the analytical consideration, this also imposes stringent conditions on numerical studies of MHD turbulence. In contrast with the hydrodynamic case, the discretization scale in numerical simulations of MHD turbulence should decrease faster than the dissipation scale, in order for the simulations to remain resolved as the Reynolds number increases.

  6. GYROKINETIC PARTICLE SIMULATION OF TURBULENT TRANSPORT IN BURNING PLASMAS

    SciTech Connect (OSTI)

    Horton, Claude Wendell

    2014-06-10

    The SciDAC project at the IFS advanced the state of high performance computing for turbulent structures and turbulent transport. The team project with Prof Zhihong Lin [PI] at Univ California Irvine produced new understanding of the turbulent electron transport. The simulations were performed at the Texas Advanced Computer Center TACC and the NERSC facility by Wendell Horton, Lee Leonard and the IFS Graduate Students working in that group. The research included a Validation of the electron turbulent transport code using the data from a steady state university experiment at the University of Columbia in which detailed probe measurements of the turbulence in steady state were used for wide range of temperature gradients to compare with the simulation data. These results were published in a joint paper with Texas graduate student Dr. Xiangrong Fu using the work in his PhD dissertation. X.R. Fu, W. Horton, Y. Xiao, Z. Lin, A.K. Sen and V. Sokolov, “Validation of electron Temperature gradient turbulence in the Columbia Linear Machine, Phys. Plasmas 19, 032303 (2012).

  7. Survey and analysis of multiresolution methods for turbulence data

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

    Pulido, Jesus; Livescu, Daniel; Woodring, Jonathan; Ahrens, James; Hamann, Bernd

    2015-11-10

    This paper compares the effectiveness of various multi-resolution geometric representation methods, such as B-spline, Daubechies, Coiflet and Dual-tree wavelets, curvelets and surfacelets, to capture the structure of fully developed turbulence using a truncated set of coefficients. The turbulence dataset is obtained from a Direct Numerical Simulation of buoyancy driven turbulence on a 5123 mesh size, with an Atwood number, A = 0.05, and turbulent Reynolds number, Ret = 1800, and the methods are tested against quantities pertaining to both velocities and active scalar (density) fields and their derivatives, spectra, and the properties of constant density surfaces. The comparisons between themore » algorithms are given in terms of performance, accuracy, and compression properties. The results should provide useful information for multi-resolution analysis of turbulence, coherent feature extraction, compression for large datasets handling, as well as simulations algorithms based on multi-resolution methods. In conclusion, the final section provides recommendations for best decomposition algorithms based on several metrics related to computational efficiency and preservation of turbulence properties using a reduced set of coefficients.« less

  8. No.","Financial and Activity Report (sheet 1 of 2) Version 1...

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

    ... 2009 2010) Community Development Financial Institution Fund Program Account" ... 2009 2010) Student Financial Assistance, Recovery Act" 322,"(019-20) ...

  9. SYMPOSIUM ON TURBULENCE AND COMBUSTION - SPECIAL SYMPOSIUM TO BRING TOGETHER TOP RESEARCHERS IN THE FIELDS OF FLUID TURBULENCE AND COMBUSTION TO PROMOTE ADVANCES IN TURBULENT, REACTING FLOWS

    SciTech Connect (OSTI)

    Caughey, David

    2010-10-08

    A Symposium on Turbulence and Combustion was held at Cornell University on August 3-4, 2009. The overall goal of the Symposium was to promote future advances in the study of turbulence and combustion, through an unique forum intended to foster interactions between leading members of these two research communities. The Symposium program consisted of twelve invited lectures given by world-class experts in these fields, two poster sessions consisting of nearly 50 presentations, an open forum, and other informal activities designed to foster discussion. Topics covered in the lectures included turbulent dispersion, wall-bounded flows, mixing, finite-rate chemistry, and others, using experiment, modeling, and computations, and included perspectives from an international community of leading researchers from academia, national laboratories, and industry.

  10. Primordial magnetic field amplification from turbulent reheating

    SciTech Connect (OSTI)

    Calzetta, Esteban; Kandus, Alejandra E-mail: kandus@uesc.br

    2010-08-01

    We analyze the possibility of primordial magnetic field amplification by a stochastic large scale kinematic dynamo during reheating. We consider a charged scalar field minimally coupled to gravity. During inflation this field is assumed to be in its vacuum state. At the transition to reheating the state of the field changes to a many particle/anti-particle state. We characterize that state as a fluid flow of zero mean velocity but with a stochastic velocity field. We compute the scale-dependent Reynolds number Re(k), and the characteristic times for decay of turbulence, t{sub d} and pair annihilation t{sub a}, finding t{sub a} << t{sub d}. We calculate the rms value of the kinetic helicity of the flow over a scale L and show that it does not vanish. We use this result to estimate the amplification factor of a seed field from the stochastic kinematic dynamo equations. Although this effect is weak, it shows that the evolution of the cosmic magnetic field from reheating to galaxy formation may well be more complex than as dictated by simple flux freezing.

  11. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked chromosomes. These enzymes are also exploited clinically as targets of antibiotics and anticancer therapeutics. Researchers at ALS Beamline 8.3.1 imaged type II topoisomerase's ordinarily short-lived state in which it is linked to a DNA's nucleic acid segment through its active site tyrosine, cleaving the DNA. Details of this

  12. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked chromosomes. These enzymes are also exploited clinically as targets of antibiotics and anticancer therapeutics. Researchers at ALS Beamline 8.3.1 imaged type II topoisomerase's ordinarily short-lived state in which it is linked to a DNA's nucleic acid segment through its active site tyrosine, cleaving the DNA. Details of this

  13. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked chromosomes. These enzymes are also exploited clinically as targets of antibiotics and anticancer therapeutics. Researchers at ALS Beamline 8.3.1 imaged type II topoisomerase's ordinarily short-lived state in which it is linked to a DNA's nucleic acid segment through its active site tyrosine, cleaving the DNA. Details of this

  14. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked chromosomes. These enzymes are also exploited clinically as targets of antibiotics and anticancer therapeutics. Researchers at ALS Beamline 8.3.1 imaged type II topoisomerase's ordinarily short-lived state in which it is linked to a DNA's nucleic acid segment through its active site tyrosine, cleaving the DNA. Details of this

  15. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked chromosomes. These enzymes are also exploited clinically as targets of antibiotics and anticancer therapeutics. Researchers at ALS Beamline 8.3.1 imaged type II topoisomerase's ordinarily short-lived state in which it is linked to a DNA's nucleic acid segment through its active site tyrosine, cleaving the DNA. Details of this

  16. Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism

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

    Topoisomerase II Structure Suggests Novel DNA Cleavage Mechanism Print Type II topoisomerases are molecular machines that regulate DNA supercoiling and separate interlocked chromosomes. These enzymes are also exploited clinically as targets of antibiotics and anticancer therapeutics. Researchers at ALS Beamline 8.3.1 imaged type II topoisomerase's ordinarily short-lived state in which it is linked to a DNA's nucleic acid segment through its active site tyrosine, cleaving the DNA. Details of this

  17. Particle dispersion in homogeneous turbulence using the one-dimensional turbulence model

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

    Sun, Guangyuan; Lignell, David O.; Hewson, John C.; Gin, Craig R.

    2014-10-09

    Lagrangian particle dispersion is studied using the one-dimensional turbulence (ODT) model in homogeneous decaying turbulence configurations. The ODT model has been widely and successfully applied to a number of reacting and nonreacting flow configurations, but only limited application has been made to multiphase flows. We present a version of the particle implementation and interaction with the stochastic and instantaneous ODT eddy events. The model is characterized by comparison to experimental data of particle dispersion for a range of intrinsic particle time scales and body forces. Particle dispersion, velocity, and integral time scale results are presented. Moreover, the particle implementation introducesmore » a single model parameter β p , and sensitivity to this parameter and behavior of the model are discussed. Good agreement is found with experimental data and the ODT model is able to capture the particle inertial and trajectory crossing effects. Our results serve as a validation case of the multiphase implementations of ODT for extensions to other flow configurations.« less

  18. One-dimensional turbulence modeling of a turbulent counterflow flame with comparison to DNS

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

    Jozefik, Zoltan; Kerstein, Alan R.; Schmidt, Heiko; Lyra, Sgouria; Kolla, Hemanth; Chen, Jackie H.

    2015-06-01

    The one-dimensional turbulence (ODT) model is applied to a reactant-to-product counterflow configuration and results are compared with DNS data. The model employed herein solves conservation equations for momentum, energy, and species on a one dimensional (1D) domain corresponding to the line spanning the domain between nozzle orifice centers. The effects of turbulent mixing are modeled via a stochastic process, while the Kolmogorov and reactive length and time scales are explicitly resolved and a detailed chemical kinetic mechanism is used. Comparisons between model and DNS results for spatial mean and root-meansquare (RMS) velocity, temperature, and major and minor species profiles aremore » shown. The ODT approach shows qualitatively and quantitatively reasonable agreement with the DNS data. Scatter plots and statistics conditioned on temperature are also compared for heat release rate and all species. ODT is able to capture the range of results depicted by DNS. However, conditional statistics show signs of underignition.« less

  19. A.12d1 Management letter when auditing financial statements of a nonpublic entity (excluding FDICIA engagements)-suggested format (Rev. 9/10)

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

    5 OAI-FS-16-06 January 2016 U.S. Department of Energy Office of Inspector General Office of Audits and Inspections KPMG LLP Suite 12000 1801 K Street, NW Washington, DC 20006 KPMG LLP is a Delaware limited liability partnership, the U.S. member firm of KPMG International Cooperative ("KPMG International"), a Swiss entity. Attachment MANAGEMENT LETTER December 16, 2015 Mr. Rickey R. Hass Acting Inspector General U.S. Department of Energy 1000 Independence Avenue, S.W. Washington, DC

  20. A dynamically collapsing core and a precursor of a core in a filament supported by turbulent and magnetic pressures

    SciTech Connect (OSTI)

    Furuya, Ray S.; Kitamura, Yoshimi; Shinnaga, Hiroko E-mail: kitamura@isas.jaxa.jp

    2014-10-01

    To study physical properties of the natal filament gas around the cloud core harboring an exceptionally young low-mass protostar GF 9-2, we carried out J = 1-0 line observations of {sup 12}CO, {sup 13}CO, and C{sup 18}O molecules using the Nobeyama 45 m telescope. The mapping area covers ? one-fifth of the whole filament. Our {sup 13}CO and C{sup 18}O maps clearly demonstrate that the core formed at the local density maxima of the filament, and the internal motions of the filament gas are totally governed by turbulence with Mach number of ?2. We estimated the scale height of the filament to be H = 0.3-0.7 pc, yielding the central density of n {sub c} = 800-4200 cm{sup 3}. Our analysis adopting an isothermal cylinder model shows that the filament is supported by the turbulent and magnetic pressures against the radial and axial collapse due to self-gravity. Since both the dissipation timescales of the turbulence and the transverse magnetic fields can be comparable to the free-fall time of the filament gas of 10{sup 6} yr, we conclude that the local decay of the supersonic turbulence and magnetic fields made the filament gas locally unstable, hence making the core collapse. Furthermore, we newly detected a gas condensation with velocity width enhancement to ?0.3 pc southwest of the GF 9-2 core. The condensation has a radius of ?0.15 pc and an LTE mass of ?5 M {sub ?}. Its internal motion is turbulent with Mach number of ?3, suggesting a gravitationally unbound state. Considering the uncertainties in our estimates, however, we propose that the condensation is a precursor of a cloud core, which would have been produced by the collision of the two gas components identified in the filament.

  1. UNDERSTANDING GALAXY OUTFLOWS AS THE PRODUCT OF UNSTABLE TURBULENT SUPPORT

    SciTech Connect (OSTI)

    Scannapieco, Evan

    2013-02-01

    The interstellar medium is a multiphase gas in which turbulent support is as important as thermal pressure. Sustaining this configuration requires both continuous turbulent stirring and continuous radiative cooling to match the decay of turbulent energy. While this equilibrium can persist for small turbulent velocities, if the one-dimensional velocity dispersion is larger than Almost-Equal-To 35 km s{sup -1}, the gas moves into an unstable regime that leads to rapid heating. I study the implications of this turbulent runaway, showing that it causes a hot gas outflow to form in all galaxies with a gas surface density above Almost-Equal-To 50 M{sub Sun} pc{sup -2}, corresponding to a star formation rate per unit area of Almost-Equal-To 0.1 M{sub Sun} yr{sup -1} kpc{sup -2}. For galaxies with v{sub esc} {approx}> 200 km s{sup -1}, the sonic point of this hot outflow should lie interior to the region containing cold gas and stars, while for galaxies with smaller escape velocities, the sonic point should lie outside this region. This leads to efficient cold cloud acceleration in higher mass galaxies, while in lower mass galaxies, clouds may be ejected by random turbulent motions rather than accelerated by the wind. Finally, I show that energy balance cannot be achieved at all for turbulent media above a surface density of Almost-Equal-To 10{sup 5} M{sub Sun} pc{sup -2}.

  2. Effect of fuel composition and differential diffusion on flame stabilization in reacting syngas jets in turbulent cross-flow

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

    Minamoto, Yuki; Kolla, Hemanth; Grout, Ray W.; Gruber, Andrea; Chen, Jacqueline H.

    2015-07-24

    Here, three-dimensional direct numerical simulation results of a transverse syngas fuel jet in turbulent cross-flow of air are analyzed to study the influence of varying volume fractions of CO relative to H2 in the fuel composition on the near field flame stabilization. The mean flame stabilizes at a similar location for CO-lean and CO-rich cases despite the trend suggested by their laminar flame speed, which is higher for the CO-lean condition. To identify local mixtures having favorable mixture conditions for flame stabilization, explosive zones are defined using a chemical explosive mode timescale. The explosive zones related to flame stabilization aremore » located in relatively low velocity regions. The explosive zones are characterized by excess hydrogen transported solely by differential diffusion, in the absence of intense turbulent mixing or scalar dissipation rate. The conditional averages show that differential diffusion is negatively correlated with turbulent mixing. Moreover, the local turbulent Reynolds number is insufficient to estimate the magnitude of the differential diffusion effect. Alternatively, the Karlovitz number provides a better indicator of the importance of differential diffusion. A comparison of the variations of differential diffusion, turbulent mixing, heat release rate and probability of encountering explosive zones demonstrates that differential diffusion predominantly plays an important role for mixture preparation and initiation of chemical reactions, closely followed by intense chemical reactions sustained by sufficient downstream turbulent mixing. The mechanism by which differential diffusion contributes to mixture preparation is investigated using the Takeno Flame Index. The mean Flame Index, based on the combined fuel species, shows that the overall extent of premixing is not intense in the upstream regions. However, the Flame Index computed based on individual contribution of H2 or CO species reveals that hydrogen

  3. Effect of fuel composition and differential diffusion on flame stabilization in reacting syngas jets in turbulent cross-flow

    SciTech Connect (OSTI)

    Minamoto, Yuki; Kolla, Hemanth; Grout, Ray W.; Gruber, Andrea; Chen, Jacqueline H.

    2015-07-24

    Here, three-dimensional direct numerical simulation results of a transverse syngas fuel jet in turbulent cross-flow of air are analyzed to study the influence of varying volume fractions of CO relative to H2 in the fuel composition on the near field flame stabilization. The mean flame stabilizes at a similar location for CO-lean and CO-rich cases despite the trend suggested by their laminar flame speed, which is higher for the CO-lean condition. To identify local mixtures having favorable mixture conditions for flame stabilization, explosive zones are defined using a chemical explosive mode timescale. The explosive zones related to flame stabilization are located in relatively low velocity regions. The explosive zones are characterized by excess hydrogen transported solely by differential diffusion, in the absence of intense turbulent mixing or scalar dissipation rate. The conditional averages show that differential diffusion is negatively correlated with turbulent mixing. Moreover, the local turbulent Reynolds number is insufficient to estimate the magnitude of the differential diffusion effect. Alternatively, the Karlovitz number provides a better indicator of the importance of differential diffusion. A comparison of the variations of differential diffusion, turbulent mixing, heat release rate and probability of encountering explosive zones demonstrates that differential diffusion predominantly plays an important role for mixture preparation and initiation of chemical reactions, closely followed by intense chemical reactions sustained by sufficient downstream turbulent mixing. The mechanism by which differential diffusion contributes to mixture preparation is investigated using the Takeno Flame Index. The mean Flame Index, based on the combined fuel species, shows that the overall extent of premixing is not intense in the upstream regions. However, the Flame Index computed based on individual contribution of H2 or CO species reveals that

  4. DOE Financial Assistance Awards: Active Project Management

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

    Source: US DOE 7/1/2013 eere.energy.gov DOE Financial Assistance Awards: Active Project Management Jim Alkire Wednesday, May 15, 2013 2 | Source: US DOE 7/1/2013 eere.energy.gov Recent Opportunities EERE Program Posted Date NOI or Solicitation/ FOA # NOI/Solicitation/FOA Title Anticipated Funding Closing Date Vehicle Technologies 12/3/2012 DE-FOA- 0000722 Electrochemical Storage Technologies Suitable for Automobile Industry Applications $62.5M 1/31/2013 Vehicle Technologies 2/1/2013 DE-FOA-

  5. Hydrocarbon characterization experiments in fully turbulent fires.

    SciTech Connect (OSTI)

    Ricks, Allen; Blanchat, Thomas K.

    2007-05-01

    As the capabilities of numerical simulations increase, decision makers are increasingly relying upon simulations rather than experiments to assess risks across a wide variety of accident scenarios including fires. There are still, however, many aspects of fires that are either not well understood or are difficult to treat from first principles due to the computational expense. For a simulation to be truly predictive and to provide decision makers with information which can be reliably used for risk assessment the remaining physical processes must be studied and suitable models developed for the effects of the physics. The model for the fuel evaporation rate in a liquid fuel pool fire is significant because in well-ventilated fires the evaporation rate largely controls the total heat release rate from the fire. A set of experiments are outlined in this report which will provide data for the development and validation of models for the fuel regression rates in liquid hydrocarbon fuel fires. The experiments will be performed on fires in the fully turbulent scale range (> 1 m diameter) and with a number of hydrocarbon fuels ranging from lightly sooting to heavily sooting. The importance of spectral absorption in the liquid fuels and the vapor dome above the pool will be investigated and the total heat flux to the pool surface will be measured. The importance of convection within the liquid fuel will be assessed by restricting large scale liquid motion in some tests. These data sets will provide a sound, experimentally proven basis for assessing how much of the liquid fuel needs to be modeled to enable a predictive simulation of a fuel fire given the couplings between evaporation of fuel from the pool and the heat release from the fire which drives the evaporation.

  6. Two-fluid turbulence including electron inertia

    SciTech Connect (OSTI)

    Andrs, Nahuel Gmez, Daniel; Gonzalez, Carlos; Martin, Luis; Dmitruk, Pablo

    2014-12-15

    We present a full two-fluid magnetohydrodynamic (MHD) description for a completely ionized hydrogen plasma, retaining the effects of the Hall current, electron pressure, and electron inertia. According to this description, each plasma species introduces a new spatial scale: the ion inertial length ?{sub i} and the electron inertial length ?{sub e}, which are not present in the traditional MHD description. In the present paper, we seek for possible changes in the energy power spectrum in fully developed turbulent regimes, using numerical simulations of the two-fluid equations in two-and-a-half dimensions. We have been able to reproduce different scaling laws in different spectral ranges, as it has been observed in the solar wind for the magnetic energy spectrum. At the smallest wavenumbers where plain MHD is valid, we obtain an inertial range following a Kolmogorov k{sup ?5?3} law. For intermediate wavenumbers such that ?{sub i}{sup ?1}?k??{sub e}{sup ?1}, the spectrum is modified to a k{sup ?7?3} power-law, as has also been obtained for Hall-MHD neglecting electron inertia terms. When electron inertia is retained, a new spectral region given by k>?{sub e}{sup ?1} arises. The power spectrum for magnetic energy in this region is given by a k{sup ?11?3} power law. Finally, when the terms of electron inertia are retained, we study the self-consistent electric field. Our results are discussed and compared with those obtained in the solar wind observations and previous simulations.

  7. Water Vapor Turbulence Profiles in Stationary Continental Convective Mixed Layers

    SciTech Connect (OSTI)

    Turner, D. D.; Wulfmeyer, Volker; Berg, Larry K.; Schween, Jan

    2014-10-08

    The U.S. Department of Energy Atmospheric Radiation Measurement (ARM) program’s Raman lidar at the ARM Southern Great Plains (SGP) site in north-central Oklahoma has collected water vapor mixing ratio (q) profile data more than 90% of the time since October 2004. Three hundred (300) cases were identified where the convective boundary layer was quasi-stationary and well-mixed for a 2-hour period, and q mean, variance, third order moment, and skewness profiles were derived from the 10-s, 75-m resolution data. These cases span the entire calendar year, and demonstrate that the q variance profiles at the mixed layer (ML) top changes seasonally, but is more related to the gradient of q across the interfacial layer. The q variance at the top of the ML shows only weak correlations (r < 0.3) with sensible heat flux, Deardorff convective velocity scale, and turbulence kinetic energy measured at the surface. The median q skewness profile is most negative at 0.85 zi, zero at approximately zi, and positive above zi, where zi is the depth of the convective ML. The spread in the q skewness profiles is smallest between 0.95 zi and zi. The q skewness at altitudes between 0.6 zi and 1.2 zi is correlated with the magnitude of the q variance at zi, with increasingly negative values of skewness observed lower down in the ML as the variance at zi increases, suggesting that in cases with larger variance at zi there is deeper penetration of the warm, dry free tropospheric air into the ML.

  8. On the interaction between turbulence and a planar rarefaction

    SciTech Connect (OSTI)

    Johnson, Bryan M.

    2014-04-01

    The modeling of turbulence, whether it be numerical or analytical, is a difficult challenge. Turbulence is amenable to analysis with linear theory if it is subject to rapid distortions, i.e., motions occurring on a timescale that is short compared to the timescale for nonlinear interactions. Such an approach (referred to as rapid distortion theory) could prove useful for understanding aspects of astrophysical turbulence, which is often subject to rapid distortions, such as supernova explosions or the free-fall associated with gravitational instability. As a proof of principle, a particularly simple problem is considered here: the evolution of vorticity due to a planar rarefaction in an ideal gas. Analytical solutions are obtained for incompressive modes having a wave vector perpendicular to the distortion; as in the case of gradient-driven instabilities, these are the modes that couple most strongly to the mean flow. Vorticity can either grow or decay in the wake of a rarefaction front, and there are two competing effects that determine which outcome occurs: entropy fluctuations couple to the mean pressure gradient to produce vorticity via baroclinic effects, whereas vorticity is damped due to the conservation of angular momentum as the fluid expands. Whether vorticity grows or decays depends upon the ratio of entropic to vortical fluctuations at the location of the front; growth occurs if this ratio is of order unity or larger. In the limit of purely entropic fluctuations in the ambient fluid, a strong rarefaction generates vorticity with a turbulent Mach number on the order of the rms of the ambient entropy fluctuations. The analytical results are shown to compare well with results from two- and three-dimensional numerical simulations. Analytical solutions are also derived in the linear regime of Reynolds-averaged turbulence models. This highlights an inconsistency in standard turbulence models that prevents them from accurately capturing the physics of

  9. The selection of turbulence models for prediction of room airflow

    SciTech Connect (OSTI)

    Nielsen, P.V.

    1998-10-01

    The airflow in buildings involves a combination of many different flow elements. It is, therefore, difficult to find an adequate, all-round turbulence model covering all aspects. Consequently, it is appropriate and economical to choose turbulence models according to the situation that is to be predicted. This paper discusses the use of different turbulence models and their advantages in given situations. As an example, it is shown that a simple zero-equation model can be used for the prediction of special situations as flow with a low level of turbulence. A zero-equation model with compensation for room dimensions and velocity level also is discussed. A {kappa}-{epsilon} model expanded by damping functions is used to improve the prediction of the flow in a room ventilated by displacement ventilation. The damping functions especially take into account the turbulence level and the vertical temperature gradient. Low Reynolds number models (LNR models) are used to improve the prediction of evaporation-controlled emissions from building material, which is shown by an example. Finally, large eddy simulation (LES) of room airflow is discussed and demonstrated.

  10. Measurement of turbulent wind velocities using a rotating boom apparatus

    SciTech Connect (OSTI)

    Sandborn, V.A.; Connell, J.R.

    1984-04-01

    The present report covers both the development of a rotating-boom facility and the evaluation of the spectral energy of the turbulence measured relative to the rotating boom. The rotating boom is composed of a helicopter blade driven through a pulley speed reducer by a variable speed motor. The boom is mounted on a semiportable tower that can be raised to provide various ratios of hub height to rotor diameter. The boom can be mounted to rotate in either the vertical or horizontal plane. Probes that measure the three components of turbulence can be mounted at any location along the radius of the boom. Special hot-film sensors measured two components of the turbulence at a point directly in front of the rotating blade. By using the probe rotated 90/sup 0/ about its axis, the third turbulent velocity component was measured. Evaluation of the spectral energy distributions for the three components of velocity indicates a large concentration of energy at the rotational frequency. At frequencies slightly below the rotational frequency, the spectral energy is greatly reduced over that measured for the nonrotating case measurements. Peaks in the energy at frequencies that are multiples of the rotation frequency were also observed. We conclude that the rotating boom apparatus is suitable and ready to be used in experiments for developing and testing sensors for rotational measurement of wind velocity from wind turbine rotors. It also can be used to accurately measure turbulent wind for testing theories of rotationally sampled wind velocity.

  11. Developments in the Gyrofluid approach to tokamak turbulence simulations

    SciTech Connect (OSTI)

    Hammett, G.W.; Beer, M.A.; Dorland, W.; Smith, S.A.; Cowley, S.C.

    1993-06-01

    A status report is given on recent developments in the gyrofluid approach to simulating tokamak turbulence. ``Gyrofluid`` (or ``gyro-Landau fluid``) equations attempt to extend the range of validity of fluid equations to a more collisionless regime typical of tokamaks, by developing fluid models of important kinetic effects such as Landau-damping and gyro-orbit averaging. The fluid moments approach should converge if enough moments are kept, though this may require a large number of moments for some processes. Toroidal gyrofluid equations have been extended from 4 to 6 moments, and to include the {mu} {gradient}B magnetic mirroring force. An efficient field-line coordinate system for toroidal turbulence simulations (useful for both particle and fluid simulations) is presented. Nonlinear 3-D simulations of toroidal ITG-driven turbulence indicate that turbulence-generated sheared flows play. an important role in the development and saturation of the turbulence. There is a strong enhancement of the flows when the electrons are assumed adiabatic on each flux surface, which is partially offset by toroidal drift effects which reduce the flows.

  12. SNOW LINES AS PROBES OF TURBULENT DIFFUSION IN PROTOPLANETARY DISKS

    SciTech Connect (OSTI)

    Owen, James E. [Canadian Institute for Theoretical Astrophysics, 60 St George Street, Toronto, M5S 3H8, ON (Canada)

    2014-07-20

    Sharp chemical discontinuities can occur in protoplanetary disks, particularly at ''snow lines'' where a gas-phase species freezes out to form ice grains. Such sharp discontinuities will diffuse out due to the turbulence suspected to drive angular momentum transport in accretion disks. We demonstrate that the concentration gradientin the vicinity of the snow lineof a species present outside a snow line but destroyed inside is strongly sensitive to the level of turbulent diffusion (provided the chemical and transport timescales are decoupled) and provides a direct measurement of the radial ''Schmidt number'' (the ratio of the angular momentum transport to radial turbulent diffusion). Taking as an example the tracer species N{sub 2}H{sup +}, which is expected to be destroyed inside the CO snow line (as recently observed in TW Hya) we show that ALMA observations possess significant angular resolution to constrain the Schmidt number. Since different turbulent driving mechanisms predict different Schmidt numbers, a direct measurement of the Schmidt number in accretion disks would allow inferences to be made about the nature of the turbulence.

  13. A spray-suppression model for turbulent combustion

    SciTech Connect (OSTI)

    DESJARDIN,PAUL E.; TIESZEN,SHELDON R.; GRITZO,LOUIS A.

    2000-02-14

    A spray-suppression model that captures the effects of liquid suppressant on a turbulent combusting flow is developed and applied to a turbulent diffusion flame with water spray suppression. The spray submodel is based on a stochastic separated flow approach that accounts for the transport and evaporation of liquid droplets. Flame extinguishment is accounted for by using a perfectly stirred reactor (PSR) submodel of turbulent combustion. PSR pre-calculations of flame extinction times are determined using CHEMKIN and are compared to local turbulent time scales of the flow to determine if local flame extinguishment has occurred. The PSR flame extinguishment and spray submodels are incorporated into Sandia's flow fire simulation code, VULCAN, and cases are run for the water spray suppression studies of McCaffrey for turbulent hydrogen-air jet diffusion flames. Predictions of flame temperature decrease and suppression efficiency are compared to experimental data as a function of water mass loading using three assumed values of drop sizes. The results show that the suppression efficiency is highly dependent on the initial droplet size for a given mass loading. A predicted optimal suppression efficiency was observed for the smallest class of droplets while the larger drops show increasing suppression efficiency with increasing mass loading for the range of mass loadings considered. Qualitative agreement to the experiment of suppression efficiency is encouraging, however quantitative agreement is limited due to the uncertainties in the boundary conditions of the experimental data for the water spray.

  14. Drizzle formation in stratocumulus clouds: Effects of turbulent mixing

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

    Magaritz-Ronen, L.; Pinsky, M.; Khain, A.

    2016-02-17

    The mechanism of drizzle formation in shallow stratocumulus clouds and the effect of turbulent mixing on this process are investigated. A Lagrangian–Eularian model of the cloud-topped boundary layer is used to simulate the cloud measured during flight RF07 of the DYCOMS-II field experiment. The model contains ~ 2000 air parcels that are advected in a turbulence-like velocity field. In the model all microphysical processes are described for each Lagrangian air volume, and turbulent mixing between the parcels is also taken into account. It was found that the first large drops form in air volumes that are closest to adiabatic andmore » characterized by high humidity, extended residence near cloud top, and maximum values of liquid water content, allowing the formation of drops as a result of efficient collisions. The first large drops form near cloud top and initiate drizzle formation in the cloud. Drizzle is developed only when turbulent mixing of parcels is included in the model. Without mixing, the cloud structure is extremely inhomogeneous and the few large drops that do form in the cloud evaporate during their sedimentation. Lastly, it was found that turbulent mixing can delay the process of drizzle initiation but is essential for the further development of drizzle in the cloud.« less

  15. Daytime turbulent exchange between the Amazon forest and the atmosphere

    SciTech Connect (OSTI)

    Fitzjarrald, D.R.; Moore, K.E. ); Cabral, M.R. ); Scolar, J. ); Manzi, A.O.; de Abreau Sa, L.D. )

    1990-09-20

    Detailed observations of turbulence just above and below the crown of the Amazon rain forest during the wet season are presented. The forest canopy is shown to remove high-frequency turbulent fluctuations while passing lower frequencies. Filter characteristics of turbulent transfer into the Amazon rain forest canopy are quantified. In spite of the ubiquitous presence of clouds and frequent rain during this season, the average horizontal wind speed spectrum and the relationship between the horizontal wind speed and its standard deviation are well described by dry convective boundary layer similarity hypotheses originally found to apply in flat terrain. Diurnal changes in the sign of the vertical velocity skewness observed above and inside the canopy are shown to be plausibly explained by considering the skewness budget. Simple empirical formulas that relate observed turbulent heat fluxes to horizontal wind speed and variance are presented. Changes in the amount of turbulent coupling between the forest and the boundary layer associated with deep convective clouds are presented in three case studies. Even small raining clouds are capable of evacuating the canopy of substances normally trapped by persistent static stability near the forest floor. Recovery from these events can take more than an hour, even during midday.

  16. Impact of Financial Structure on the Cost of Solar Energy

    SciTech Connect (OSTI)

    Mendelsohn, M.; Kreycik, C.; Bird, L.; Schwabe, P.; Cory, K.

    2012-03-01

    To stimulate investment in renewable energy generation projects, the federal government developed a series of support structures that reduce taxes for eligible investors--the investment tax credit, the production tax credit, and accelerated depreciation. The nature of these tax incentives often requires an outside investor and a complex financial arrangement to allocate risk and reward among the parties. These financial arrangements are generally categorized as 'advanced financial structures.' Among renewable energy technologies, advanced financial structures were first widely deployed by the wind industry and are now being explored by the solar industry to support significant scale-up in project development. This report describes four of the most prevalent financial structures used by the renewable sector and evaluates the impact of financial structure on energy costs for utility-scale solar projects that use photovoltaic and concentrating solar power technologies.

  17. FY 2010 DOE Agency Financial Report | Department of Energy

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

    Agency Financial Reports » FY 2010 DOE Agency Financial Report FY 2010 DOE Agency Financial Report The Department's efforts brought it closer to its goals of: expanding the frontiers of science (science, discovery and innovation) creating clean energy jobs (economic prosperity) curbing the carbon pollution that threatens our planet (clean, secure energy) reducing nuclear dangers (national security) FY 2010 was the second year of implementing the American Recovery and Reinvestment Act (Recovery

  18. FY 2011 DOE Agency Financial Report | Department of Energy

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

    Agency Financial Reports » FY 2011 DOE Agency Financial Report FY 2011 DOE Agency Financial Report DOE made investments to lay the foundation for a new clean energy economy: creating jobs reducing our dependence on foreign energy sources saving money for American families and businesses Investments in advanced vehicle manufacturing, renewable energy generation, the weatherization of low-income homes, smart meter deployment, and carbon capture and sequestration have benefited communities across

  19. FY 2012 DOE Agency Financial Report | Department of Energy

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

    Agency Financial Reports » FY 2012 DOE Agency Financial Report FY 2012 DOE Agency Financial Report Notable accomplishments in FY 2012 include: the first electric grid-connected tidal energy project off the coast of Maine a new approach to sea water desalination that could lower the costs of water purification new insights into the molecular structure of a hydrogen fuel cell that could aid in achieving the goal of producing electricity for transportation new advances in engineering inedible

  20. FY 2013 DOE Agency Financial Report | Department of Energy

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

    Agency Financial Reports » FY 2013 DOE Agency Financial Report FY 2013 DOE Agency Financial Report Notable accomplishments in FY 2013: Investments in energy transformation have resulted in testing of greenhouse gas storage, the first grid-connected offshore wind prototype, cost competitive advances in cellulosic ethanol, the first commercial geothermal system to deliver power to the electric grid, improved efficiency and cyber security for the electric grid, new appliance efficiency standards,

  1. Acquisition Financial Assistance Letter No.2010-03 Strategic Integrated

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

    Procurement Enterprise System (STRIPES) | Department of Energy Financial Assistance Letter No.2010-03 Strategic Integrated Procurement Enterprise System (STRIPES) Acquisition Financial Assistance Letter No.2010-03 Strategic Integrated Procurement Enterprise System (STRIPES) Attached is the subject AL/FAL which prescribes requirements and guidance pertaining to the Department's implementation and use of STRIPES. PF2010-19 Acquisition Financial Assistance Letter No. 2010-03 Strategic

  2. Financial statistics of major US publicly owned electric utilities 1994

    SciTech Connect (OSTI)

    1995-12-15

    This publication presents 5 years (1990--94) of summary financial data and current year detailed financial data on the major publicly owned electric utilities. Generator and nongenerator summaries are presented. Composite tables present: Aggregates of income statement and balance sheet data, financial indicators, electric operation and maintenance expenses, electric utility plant, number of consumers, sales of electricity, and operating revenue, and electric energy account data.

  3. Publication of Final Rule for Department of Energy (DOE) Financial

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

    Assistance Regulations | Department of Energy Publication of Final Rule for Department of Energy (DOE) Financial Assistance Regulations Publication of Final Rule for Department of Energy (DOE) Financial Assistance Regulations PF2009-70.pdf (201.22 KB) More Documents & Publications Publication of Final Rule for Department of Energy (DOE) Financial Assistance Regulations Rescind Policy Flashes 2010-04 "Cease All Funding of the Association of Community Organizations for Reform Now

  4. Contacts for the Assistant General Counsel for Procurement and Financial

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

    Assistance | Department of Energy Procurement and Financial Assistance Contacts for the Assistant General Counsel for Procurement and Financial Assistance Joseph A. Lenhard, Assistant General Counsel for Procurement & Financial Assistance 202-586-0321 joseph.lenhard@hq.doe.gov Source Selection/Bid Protests 202-586-6902 202-586-4546 (fax) Laura L. Hoffman, Deputy Assistant General Counsel 202-586-8836 laura.hoffman@hq.doe.gov Kevin R. Hilferty, Attorney-Adviser 202-586-8260

  5. DOE Financial Assistance Awards: Active Project Management | Department of

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

    Energy Financial Assistance Awards: Active Project Management DOE Financial Assistance Awards: Active Project Management Presentation by Jim Alkire during the May 15 working lunch session at the 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting. DOE Financial Assistance Awards: Active Project Management (566.87 KB) More Documents & Publications Funding Opportunity Webinar - Advancing Solutions to Improve Energy

  6. Financial Incentives for Hydrogen and Fuel Cell Projects | Department of

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

    Energy Market Transformation » Financial Incentives for Hydrogen and Fuel Cell Projects Financial Incentives for Hydrogen and Fuel Cell Projects Find information about federal and state financial incentives for hydrogen fuel cell projects. Federal Incentives The Emergency Economic Stabilization Act of 2008 includes tax incentives to help minimize the cost of hydrogen and fuel cell projects. It offers an investment tax credit of 30% for qualified fuel cell property or $3,000/kW of the fuel

  7. Gregory H. Friedman: Provided for the Subcommittee on Financial and

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

    Contracting Oversight Committee on Homeland Security and Governmental Affairs | Department of Energy Financial and Contracting Oversight Committee on Homeland Security and Governmental Affairs Gregory H. Friedman: Provided for the Subcommittee on Financial and Contracting Oversight Committee on Homeland Security and Governmental Affairs June 27, 2013 Gregory H. Friedman: Provided for the Subcommittee on Financial and Contracting Oversight Committee on Homeland Security and Governmental

  8. Department of Energy Idaho - Contracts, Financial Assistance &

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

    Solicitations Contracts, Financial Assistance & Solicitations Contracts, Financial Assistance & Solicitations Procurement and Acquisition, Doing Business With the U.S. Department of Energy Financial Assistance Forms and Information For Applicants and Recipients DOE Site Facility Management Contracts Internet Posting ACQUISITION Selected Contracts of Public Interest ICP Core Contract - Fluor Idaho, LLC Advanced Mixed Waste Treatment Project (AMWTP) Contract Idaho Cleanup Project (ICP)

  9. Financial News for Major Energy Companies, Fourth Quarter 2005

    Gasoline and Diesel Fuel Update (EIA)

    Fourth Quarter 2005 Overview The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or fail to provide separate information for the company's U.S. operations. Twenty-one major energy companies 1 reported overall net income

  10. Financial News for Major Energy Companies, Fourth Quarter 2006

    Gasoline and Diesel Fuel Update (EIA)

    6 Overview The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or do not provide separate information for the company's U.S. operations. Nineteen major energy companies 1 reported overall net income (excluding unusual

  11. Financial News for Major Energy Companies, July - September 2004

    Gasoline and Diesel Fuel Update (EIA)

    NEWS FOR MAJOR ENERGY COMPANIES The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies, which include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or fail to provide separate information for the company's U.S. operations. Twenty-four major energy companies reported overall net income

  12. Financial News for Major Energy Companies, October - December 2004

    Gasoline and Diesel Fuel Update (EIA)

    The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or fail to provide separate information for the company's U.S. operations. Twenty-three major energy companies reported overall net income (excluding unusual items) of

  13. Financial News for Major Energy Companies, Second Quarter 2006

    Gasoline and Diesel Fuel Update (EIA)

    Second Quarter 2006 Overview The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or do not provide separate information for the company's U.S. operations. Twenty-one major energy companies 1 reported overall net income

  14. Financial News for Major Energy Companies, Third Quarter 2006

    Gasoline and Diesel Fuel Update (EIA)

    Third Quarter 2006 Overview The "Financial News for Major Energy Companies" is issued quarterly to report recent trends in the financial performance of the major energy companies. These include the respondents to Form EIA-28 (Financial Reporting System (FRS)), with the exception of the FRS companies that do not issue quarterly earnings releases or do not provide separate information for the company's U.S. operations. Twenty major energy companies 1 reported overall net income

  15. Grants and Financial Opportunities Within DOE | Department of Energy

    Energy Savers [EERE]

    Grants and Financial Opportunities Within DOE Grants and Financial Opportunities Within DOE Presented at the 15th Annual DOE Small Business Forum & Expo by: Lalida Crawford, Office of Energy Efficiency and Renewable Energy, U.S. DOE Grants and Financial Opportunities Within DOE (3.24 MB) More Documents & Publications Notice of Intent to Issue Funding Opportunity Announcement "Assisting Federal Facilities with Energy Conservation Technologies (AFFECT) 2016," DE-FOA-0001574 WPN

  16. Utility Regulation and Business Model Reforms for Addressing the Financial

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

    Impacts of Distributed Solar on Utilities | Department of Energy Utility Regulation and Business Model Reforms for Addressing the Financial Impacts of Distributed Solar on Utilities Utility Regulation and Business Model Reforms for Addressing the Financial Impacts of Distributed Solar on Utilities Utility Regulation and Business Model Reforms for Addressing the Financial Impacts of Distributed Solar on Utilities Implementing a range of alternative utility-rate reforms could minimize solar

  17. Agreement for Minority Financial Institutions Participation in the Bank

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

    Deposit Financial Assistance Program | Department of Energy (BDFAP), the Minority Financial lnstitution fully agrees to comply with the intent of the program, the instructions provided by the Administrative Financial lnstitutions (AFls), which serve as "trustees" for the Depositor, and the terms set forth below. In this Agreement the term "Depositor" refers to the U.S. Department of Energy and the term "Regulatory Agency" refers to the Federal Deposit Insurance

  18. Agreement for Minority Financial Institutions Participation in the Bank

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

    Deposit Financial Assistance Program | Department of Energy (BDFAP), the Minority Financial lnstitution fully agrees to comply with the intent of the program, the instructions provided by the Administrative Financial lnstitutions (AFls), which serve as "trustees" for the Depositor, and the terms set forth below. In this Agreement the term "Depositor" refers to the U.S. Department of Energy and the term "Regulatory Agency" refers to the Federal Deposit Insurance

  19. Fuel Cell Technologies Office Financial Opportunities | Department of

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

    Energy Financial Opportunities Fuel Cell Technologies Office Financial Opportunities The U.S. Department of Energy (DOE) Fuel Cell Technologies Office (FCTO) offers information about current and past financial opportunities, requests for information, and links to related opportunities from other DOE offices and federal organizations. The FCTO mission is to research, develop, and validate hydrogen production, delivery, storage, and fuel cell technologies. In carrying out this mission, FCTO

  20. Using the Street and Parking Facility Lighting Retrofit Financial Analysis

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

    Tool | Department of Energy Information Resources » Webcasts » Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool This August 22, 2013 webinar provided a guided walk-through of the Street and Parking Facility Lighting Retrofit Financial Analysis Tool. Developed by a partnership of the DOE Municipal Solid-State Street Lighting Consortium, the Clinton Climate Initiative/C40, and the