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Note: This page contains sample records for the topic "large-eddy simulation les" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

Advanced Engine Combustion Research Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies...

2

Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine...  

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

Large Eddy Simulation (LES) Applied to LTCDieselHydrogen Engine Combustion Research Large Eddy Simulation (LES) Applied to LTCDieselHydrogen Engine Combustion Research 2009 DOE...

3

Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel...  

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

Combustion Research Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine Combustion Research 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle...

4

Large-eddy simulations of scramjet engines.  

E-Print Network [OSTI]

??The main objective of this dissertation is to develop large-eddy simulation (LES) based computational tools for supersonic inlet and combustor design. In the recent past,… (more)

Koo, Heeseok

2011-01-01T23:59:59.000Z

5

Gyrokinetic large eddy simulations  

SciTech Connect (OSTI)

The large eddy simulation approach is adapted to the study of plasma microturbulence in a fully three-dimensional gyrokinetic system. Ion temperature gradient driven turbulence is studied with the GENE code for both a standard resolution and a reduced resolution with a model for the sub-grid scale turbulence. A simple dissipative model for representing the effect of the sub-grid scales on the resolved scales is proposed and tested. Once calibrated, the model appears to be able to reproduce most of the features of the free energy spectra for various values of the ion temperature gradient.

Morel, P.; Navarro, A. Banon; Albrecht-Marc, M.; Carati, D. [Statistical and Plasma Physics Laboratory, Universite Libre de Bruxelles, Bruxelles 1050 (Belgium); Merz, F.; Goerler, T.; Jenko, F. [Max-Planck-Institut fuer Plasmaphysik, Boltzmannstr. 2, D-85748 Garching (Germany)

2011-07-15T23:59:59.000Z

6

Vehicle Technologies Office Merit Review 2014: Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research  

Broader source: Energy.gov [DOE]

Presentation given by Sandia National Laboratories at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about large eddy...

7

Large eddy simulation of one diffusion swirling flame European Combustion Meeting 2011  

E-Print Network [OSTI]

.5 7200 75900 Numerical method This research use large eddy simulation (LES) in software ANASYS FLUENT Simulations of Swirling Non-premixed Flames With Flamelet Models: A Comparison of Numerical Methods. FlowLarge eddy simulation of one diffusion swirling flame European Combustion Meeting 2011 Introduction

Berning, Torsten

8

Flame Stability Analysis in an Ultra Compact Combustor Using Large-Eddy Simulation  

E-Print Network [OSTI]

Flame Stability Analysis in an Ultra Compact Combustor Using Large-Eddy Simulation C. Lietz , C Base, Ohio 45433 Large eddy simulation (LES) of an experimental ultra-compact combustor (UCC as a conven- tional combustor path. In order to reduce the penalty due to increased weight of these burners

Raman, Venkat

9

Large-eddy simulation of swirling particle-laden flows in a coaxial-jet combustor  

E-Print Network [OSTI]

Large-eddy simulation of swirling particle-laden flows in a coaxial-jet combustor S.V. Apte a,* , K 2003 Abstract Large-eddy simulation (LES) of particle-laden, swirling flow in a coaxial-jet combustor;cyclone combustors, and biomass gasifiers (Lefebvre, 1989). The physics of such flows is extremely complex

Apte, Sourabh V.

10

Applications of large eddy simulation methods to gyrokinetic turbulence  

SciTech Connect (OSTI)

The large eddy simulation (LES) approach—solving numerically the large scales of a turbulent system and accounting for the small-scale influence through a model—is applied to nonlinear gyrokinetic systems that are driven by a number of different microinstabilities. Comparisons between modeled, lower resolution, and higher resolution simulations are performed for an experimental measurable quantity, the electron density fluctuation spectrum. Moreover, the validation and applicability of LES is demonstrated through a series of diagnostics based on the free energetics of the system.

Bañón Navarro, A., E-mail: alejandro.banon.navarro@ipp.mpg.de; Happel, T. [Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching (Germany)] [Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching (Germany); Teaca, B. [Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB (United Kingdom) [Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB (United Kingdom); Max-Planck für Sonnensystemforschung, Max-Planck-Str. 2, D-37191 Katlenburg-Lindau (Germany); Max-Planck/Princeton Center for Plasma Physics (Germany); Jenko, F. [Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching (Germany) [Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching (Germany); Max-Planck/Princeton Center for Plasma Physics (Germany); Hammett, G. W. [Max-Planck/Princeton Center for Plasma Physics, Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States)] [Max-Planck/Princeton Center for Plasma Physics, Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States); Collaboration: ASDEX Upgrade Team

2014-03-15T23:59:59.000Z

11

Toward the Large-Eddy Simulation Over a Hypersonic Elliptical Cross-Section Cone  

E-Print Network [OSTI]

Toward the Large-Eddy Simulation Over a Hypersonic Elliptical Cross-Section Cone M. Pino Mart layer. Also, the computational setup for the large-eddy sim- ulation (LES) of a hypersonic elliptical cross-section cone is discussed in detail. Introduction The aerodynamic heating effects in hypersonic

Martín, Pino

12

Large-Eddy Simulation of Flow and Pollutant Transport in Urban Street Canyons with Ground Heating  

E-Print Network [OSTI]

Our study employed large-eddy simulation (LES) based on a one-equation subgrid-scale model to investigate the flow field and pollutant dispersion characteristics inside urban street canyons. Unstable thermal stratification ...

Li, Xian-Xiang

13

Calculation of unsteady turbulent flow around obstacles using the large eddy simulation turbulence model  

E-Print Network [OSTI]

The premise of the work presented here is to use a common analytical tool, Computational Fluid Dynamics (CFD), along with a prevalent turbulence model, Large Eddy Simulation (LES), to study the flow past rectangular cylinders. In an attempt to use...

Helton, Donald McLean

2002-01-01T23:59:59.000Z

14

Large-Eddy Simulation of Post-Cold-Frontal Continental Stratocumulus  

E-Print Network [OSTI]

Previous large-eddy simulations (LES) of stratocumulus-topped boundary layers have been exclusively set in marine environments. Boundary layer stratocumulus clouds are also prevalent over the continent but have not been ...

Mechem, David B.; Kogan, Yefim L.; Schultz, David M.

2010-12-01T23:59:59.000Z

15

Implicit Large Eddy Simulation of Cavitation in Micro Channel Flows  

E-Print Network [OSTI]

We present a numerical method for Large Eddy Simulations (LES) of compressible two-phase flows. The method is validated for the flow in a micro channel with a step-like restriction. This setup is representative for typical cavitating multi-phase flows in fuel injectors and follows an experimental study of Iben et al., 2010. While a diesel-like test fuel was used in the experiment, we solve the compressible Navier-Stokes equations with a barotropic equation of state for water and vapor and a simple phase-change model based on equilibrium assumptions. Our LES resolve all wave dynamics in the compressible fluid and the turbulence production in shear layers.

Hickel, S; Schmidt, S J

2014-01-01T23:59:59.000Z

16

Large-Eddy Simulation of Wind-Plant Aerodynamics: Preprint  

SciTech Connect (OSTI)

In this work, we present results of a large-eddy simulation of the 48 multi-megawatt turbines composing the Lillgrund wind plant. Turbulent inflow wind is created by performing an atmospheric boundary layer precursor simulation and turbines are modeled using a rotating, variable-speed actuator line representation. The motivation for this work is that few others have done wind plant large-eddy simulations with a substantial number of turbines, and the methods for carrying out the simulations are varied. We wish to draw upon the strengths of the existing simulations and our growing atmospheric large-eddy simulation capability to create a sound methodology for performing this type of simulation. We have used the OpenFOAM CFD toolbox to create our solver.

Churchfield, M. J.; Lee, S.; Moriarty, P. J.; Martinez, L. A.; Leonardi, S.; Vijayakumar, G.; Brasseur, J. G.

2012-01-01T23:59:59.000Z

17

Large-Eddy Simulation of a Supersonic Inlet-Isolator Heeseok Koo1  

E-Print Network [OSTI]

-mode scramjet engine that pro- vides stable compressed flow to the combustor. However, if the combustor scramjet engines. Here, the predictive capa- bility of the large eddy simulation (LES) methodology-mode scramjets provide a practical solution to hypersonic flight by operating at both low and high supersonic

Raman, Venkat

18

Large-eddy simulation of multiphase flows in complex combustors  

E-Print Network [OSTI]

Large-eddy simulation of multiphase flows in complex combustors S. V. Apte1 , K. Mahesh2 , F. Ham1 to accurately predict reacting multi-phase flows in practical combustors involving complex physical phenomena-turbine combustor geometries to evaluate the predictions made for multiphase, turbulent flow. 1 Introduction

Mahesh, Krishnan

19

Large-Eddy Simulation of the Bachalo-Johnson Flow, with Shock...  

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

Travin, New Technologies and Services, Ltd. Large-Eddy Simulation of the Bachalo-Johnson Flow, with Shock-Induced Separation PI Name: Philippe Spalart PI Email:...

20

Modeling dilute sediment suspension using large-eddy simulation with a dynamic mixed model  

E-Print Network [OSTI]

Modeling dilute sediment suspension using large-eddy simulation with a dynamic mixed model Yi Transport of suspended sediment in high Reynolds number channel flows Re=O 600 000 is simulated using large-eddy simulation along with a dynamic-mixed model DMM . Because the modeled sediment concentration is low

Fringer, Oliver B.

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


21

Large-eddy simulation of a wind turbine wake in turbulent  

E-Print Network [OSTI]

Large-eddy simulation of a wind turbine wake in turbulent neutral shear flow Shengbai Xie, Cristina-similar velocity profile existing in the wake after a wind turbine? How does the wake influence the vertical? Motivation #12; Large-eddy simulation for turbulent flow field Actuator-line model for wind turbine ui

Firestone, Jeremy

22

Temporal structure of aggregate power fluctuations in large-eddy simulations of extended wind-farms  

E-Print Network [OSTI]

Fluctuations represent a major challenge for the incorporation of electric power from large wind-farms into power grids. Wind farm power output fluctuates strongly in time, over various time scales. Understanding these fluctuations, especially their spatio-temporal characteristics, is particularly important for the design of backup power systems that must be readily available in conjunction with wind-farms. In this work we analyze the power fluctuations associated with the wind-input variability at scales between minutes to several hours, using large eddy simulations (LES) of extended wind-parks, interacting with the atmospheric boundary layer. LES studies enable careful control of parameters and availability of wind-velocities simultaneously across the entire wind-farm. The present study focuses on neutral atmospheric conditions and flat terrain, using actuator-disk representations of the individual wind-turbines. We consider power from various aggregates of wind-turbines such as the total average power sign...

Stevens, Richard J A M

2014-01-01T23:59:59.000Z

23

Examination of steam generator turbulence by large eddy simulation  

E-Print Network [OSTI]

techniques (Biringen, ei ah 1981; Yakhot et al. 1986). Clark et ah (1979) quantified the various subgrid scale (SGS) terms in LES by comparing their results to a direct simulation. Schumann (1975) used an integral conservation equation combined with an SGS... in the past . The most important interactions are: fluidelastic instability, vortex shedding, turbulent buffeting, and acoustic resonance. Fluidelastic instability results from a coupled fluid-tube force interaction. The instability is also thought...

Bagwell, Ted Glyn

1989-01-01T23:59:59.000Z

24

Investigation of two-fluid methods for Large Eddy Simulation of spray combustion in Gas Turbines  

E-Print Network [OSTI]

Investigation of two-fluid methods for Large Eddy Simulation of spray combustion in Gas Turbines the EL method well suited for gas turbine computations, but RANS with the EE approach may also be found

25

Turbulence prediction in two- and three-dimensional bundle flows using Large Eddy Simulation  

E-Print Network [OSTI]

TURBULENCE PREDICTION IN TWO- AND THREE-DIMENSIONAL BUNDLE FLOWS USING LARGE EDDY SIMULATION A Thesis by WAEL ABDUL-HAMID IBRAHIM Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... Prediction in Two- and Three-Dimensional Bundle Flows Using Large Eddy Simulation. (May 1994) Wael Abdul-Hamid Ibrahim, B. S. Alexandria University Chair of Advisory Committee: Dr. Yassin A. Hassan Flow turbulence is a familiar phenomenon in everyday life...

Ibrahim, Wael Abdul-Hamid

1994-01-01T23:59:59.000Z

26

Large eddy simulation of forced ignition of an annular bluff-body burner  

SciTech Connect (OSTI)

The optimization of the ignition process is a crucial issue in the design of many combustion systems. Large eddy simulation (LES) of a conical shaped bluff-body turbulent nonpremixed burner has been performed to study the impact of spark location on ignition success. This burner was experimentally investigated by Ahmed et al. [Combust. Flame 151 (2007) 366-385]. The present work focuses on the case without swirl, for which detailed measurements are available. First, cold-flow measurements of velocities and mixture fractions are compared with their LES counterparts, to assess the prediction capabilities of simulations in terms of flow and turbulent mixing. Time histories of velocities and mixture fractions are recorded at selected spots, to probe the resolved probability density function (pdf) of flow variables, in an attempt to reproduce, from the knowledge of LES-resolved instantaneous flow conditions, the experimentally observed reasons for success or failure of spark ignition. A flammability map is also constructed from the resolved mixture fraction pdf and compared with its experimental counterpart. LES of forced ignition is then performed using flamelet fully detailed tabulated chemistry combined with presumed pdfs. Various scenarios of flame kernel development are analyzed and correlated with typical flow conditions observed in this burner. The correlations between, velocities and mixture fraction values at the sparking time and the success or failure of ignition, are then further discussed and analyzed. (author)

Subramanian, V.; Domingo, P.; Vervisch, L. [CORIA-CNRS and INSA de Rouen, Technopole du Madrillet, BP 8, 76801 Saint-Etienne-du-Rouvray (France)

2010-03-15T23:59:59.000Z

27

Large-eddy simulation of turbulent cavitating flow in a micro channel  

SciTech Connect (OSTI)

Large-eddy simulations (LES) of cavitating flow of a Diesel-fuel-like fluid in a generic throttle geometry are presented. Two-phase regions are modeled by a parameter-free thermodynamic equilibrium mixture model, and compressibility of the liquid and the liquid-vapor mixture is taken into account. The Adaptive Local Deconvolution Method (ALDM), adapted for cavitating flows, is employed for discretizing the convective terms of the Navier-Stokes equations for the homogeneous mixture. ALDM is a finite-volume-based implicit LES approach that merges physically motivated turbulence modeling and numerical discretization. Validation of the numerical method is performed for a cavitating turbulent mixing layer. Comparisons with experimental data of the throttle flow at two different operating conditions are presented. The LES with the employed cavitation modeling predicts relevant flow and cavitation features accurately within the uncertainty range of the experiment. The turbulence structure of the flow is further analyzed with an emphasis on the interaction between cavitation and coherent motion, and on the statistically averaged-flow evolution.

Egerer, Christian P., E-mail: christian.egerer@aer.mw.tum.de; Hickel, Stefan; Schmidt, Steffen J.; Adams, Nikolaus A. [Institute of Aerodynamics and Fluid Mechanics, Technische Universität München, Boltzmannstr. 15, 85748 Garching bei München (Germany)

2014-08-15T23:59:59.000Z

28

Large-eddy Simulation of Realistic Gas Turbine Combustors , & Apte, S. V.  

E-Print Network [OSTI]

Large-eddy Simulation of Realistic Gas Turbine Combustors Moin, P. , & Apte, S. V. Center models and the numerical scheme is performed in canonical and complex combustor geometries. Finally, a multi-scale, multi-physics, turbulent reacting flow simulation in a real gas-turbine combustor

Apte, Sourabh V.

29

On the self-similarity assumption in dynamic models for large eddy simulations  

E-Print Network [OSTI]

that the present formulation of the DP is usually incompatible with its under- lying self-similarity assumption SSAOn the self-similarity assumption in dynamic models for large eddy simulations Daniele Carati eddy simulations and their underlying self-similarity assumption is discussed. The interpretation

Van Den Eijnden, Eric

30

Extracting the Acoustic pressure field from Large Eddy Simulation of confined reactive flows  

E-Print Network [OSTI]

and non-premixed open flames3,4 as well as in more complex cases such as gas turbine combustors must be large enough to include the sources of noise as well as part of the acoustic near field.6 VeryExtracting the Acoustic pressure field from Large Eddy Simulation of confined reactive flows Camilo

Nicoud, Franck

31

Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components.  

E-Print Network [OSTI]

Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components. Florent Duchaine constraint for GT (gas turbines). Most existing CHT tools are developped for chained, steady phenomena. A film-cooled turbine vane is then studied. Thermal conduction in the blade implies lower wall

Nicoud, Franck

32

Massively-Parallel Spectral Element Large Eddy Simulation of a Ring-Type Gas Turbine Combustor  

E-Print Network [OSTI]

The average and fluctuating components in a model ring-type gas turbine combustor are characterized using a Large Eddy Simulation at a Reynolds number of 11,000, based on the bulk velocity and the mean channel height. A spatial filter is applied...

Camp, Joshua Lane

2012-07-16T23:59:59.000Z

33

Large Eddy Simulation Analysis of Flow Field Inside a High-g Combustor  

E-Print Network [OSTI]

Large Eddy Simulation Analysis of Flow Field Inside a High-g Combustor C. Heye , C. Lietz , J-compact combustors (UCC) are a technology for reducing the size of combustors. In these combustors the fuel and air results exhibit significant entrainment of fuel into recirculation zones inside the combustor, however

Raman, Venkat

34

Large-eddy simulation of lean hydrogenemethane turbulent premixed flames in the methane-  

E-Print Network [OSTI]

Large-eddy simulation of lean hydrogenemethane turbulent premixed flames in the methane- dominated to available experimental data. The enriched flame has 20% H2 in terms of mole fraction and lies in the methane methane flame in the methane- dominated regime. Copyright ª 2014, Hydrogen Energy Publications, LLC

Gülder, �mer L.

35

Computing combustion noise by combining Large Eddy Simulations with analytical models for the propagation of waves  

E-Print Network [OSTI]

Computing combustion noise by combining Large Eddy Simulations with analytical models +++++ Presented by Ignacio Duran Abstract Two mechanisms control combustion noise generation as shown by Marble. A method to calculate combustion-generated noise has been implemented in a tool called CHORUS. The method

Paris-Sud XI, Université de

36

Large Eddy Simulation of Supersonic Combustion using Direct Quadrature Method of Moments  

E-Print Network [OSTI]

. Supersonic combustion involves the interaction of complex gas-phase chemical reactions in a compressible flowLarge Eddy Simulation of Supersonic Combustion using Direct Quadrature Method of Moments Pratik modeling problem. In supersonic combustion, typical closures based on conserved scalar approaches cannot

Raman, Venkat

37

3D chaotic model for sub-grid turbulent dispersion in Large Eddy Simulations  

E-Print Network [OSTI]

We introduce a 3D multiscale kinematic velocity field as a model to simulate Lagrangian turbulent dispersion. The incompressible velocity field is a nonlinear deterministic function, periodic in space and time, that generates chaotic mixing of Lagrangian trajectories. Relative dispersion properties, e.g. the Richardson's law, are correctly reproduced under two basic conditions: 1) the velocity amplitudes of the spatial modes must be related to the corresponding wavelengths through the Kolmogorov scaling; 2) the problem of the lack of "sweeping effect" of the small eddies by the large eddies, common to kinematic simulations, has to be taken into account. We show that, as far as Lagrangian dispersion is concerned, our model can be successfully applied as additional sub-grid contribution for Large Eddy Simulations of the planetary boundary layer flow.

Guglielmo Lacorata; Andrea Mazzino; Umberto Rizza

2007-11-15T23:59:59.000Z

38

Multi-Dimensional Broadband IR Radiative Forcing of Marine Stratocumulus in a Large Eddy Simulation Model  

SciTech Connect (OSTI)

In order to address the interactive and evolutionary nature of the cloud-radiation interaction, we have coupled to a Large Eddy Simulation (LES) model the sophisticated multi-dimensional radiative transfer (MDRT) scheme of Evans (Spherical Harmonics Discrete Ordinate Method; 1998). Because of computational expense, we are at this time only able to run 2D experiments. Preliminary runs consider only the broadband longwave component, in large part because IR cloud top cooling is the significant forcing mechanism for marine stratocumulus. Little difference is noted in the evolution of unbroken stratocumulus between three-hour runs using MDRT and independent pixel approximation (IPA) for 2D domains of 50 km in the horizontal and 1.5 km in the vertical. Local heating rates differ slightly near undulating regions of cloud top, and a slight bias in mean heating rate from 1 to 3 h is present, yet the differences are never strong enough to result in a pronounced evolutionary bias in typical boundary layer metrics (e.g. inversion height, vertical velocity variance, TKE). Longer integration times may eventually produce a physical response to the bias in radiative cooling rates. A low-CCN case, designed to produce significant drizzle and induce cloud breakup does show subtle differences between MDRT and IPA. Over the course of the 6 hour simulations, entrainment is slightly less in the MDRT case, and the transition to the surface-based trade cumulus regime is delayed. Mean cooling rates appear systematically weaker in the MDRT case, indicative of a less energetic PBL and reflected in profiles of vertical velocity variance and TKE.

Mechem, David B.; Ovtchinnikov, Mikhail; Kogan, Y. L.; Davis, Anthony B; Cahalan, Robert F.; Takara, Ezra E.; Ellingson, Robert G.

2002-06-03T23:59:59.000Z

39

Numerical experiments with assimilation of the mean and unresolved meteorological conditions into large-eddy simulation model  

E-Print Network [OSTI]

Micrometeorology, city comfort, land use management and air quality monitoring increasingly become important environmental issues. To serve the needs, meteorology needs to achieve a serious advance in representation and forecast on micro-scales (meters to 100 km) called meteorological terra incognita. There is a suitable numerical tool, namely, the large-eddy simulation modelling (LES) to support the development. However, at present, the LES is of limited utility for applications. The study addresses two problems. First, the data assimilation problem on micro-scales is investigated as a possibility to recover the turbulent fields consistent with the mean meteorological profiles. Second, the methods to incorporate of the unresolved surface structures are investigated in a priopi numerical experiments. The numerical experiments demonstrated that the simplest nudging or Newtonian relaxation technique for the data assimilation is applicable on the turbulence scales. It is also shown that the filtering property of...

Esau, Igor

2010-01-01T23:59:59.000Z

40

Investigation of transition to turbulence at low Reynolds numbers using Implicit Large Eddy Simulations with a Discontinuous Galerkin method  

E-Print Network [OSTI]

The present work predicts the formation of laminar separation bubbles at low Reynolds numbers and the related transition to turbulence. In addition to being one of the first Implicit Large Eddy Simulation studies using a ...

Uranga Cabrera, Alejandra (Uranga)

2011-01-01T23:59:59.000Z

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


41

Large-eddy Simulation of the Nighttime Stable Atmospheric Boundary Layer  

E-Print Network [OSTI]

eddy Simulation of Wind-turbine Wakes: Evaluation of Turbineperformed LES of wind-turbine wakes in neutrally stratified

Zhou, Bowen

2012-01-01T23:59:59.000Z

42

Selective large-eddy simulation of hypersonic flows. Procedure to activate the filtering in unresolved regions only  

E-Print Network [OSTI]

A new method for the localization of the regions where the turbulent fluctuations are unresolved is applied to the large-eddy simulation (LES) of a compressible turbulent jet with an initial Mach number equal to 5. The localization method used is called selective LES and is based on the exploitation of a scalar probe function f which represents the magnitude of the stretching-tilting term of the vorticity equation normalized with the enstrophy (Tordella et al. 2007). For a fully developed turbulent field of fluctuations, statistical analysis shows that the probability that f is larger than 2 is almost zero, and, for any given threshold, it is larger if the flow is under-resolved. By computing the spatial field of f in each instantaneous realization of the simulation it is possible to locate the regions where the magnitude of the normalized vortical stretching-tilting is anomalously high. The sub-grid model is then introduced into the governing equations in such regions only. The results of the selective LES s...

Tordella, D; Massaglia, S; Mignone, A

2012-01-01T23:59:59.000Z

43

Implicit large eddy simulations of anisotropic weakly compressible turbulence with application to core-collapse supernovae  

E-Print Network [OSTI]

(Abridged) In the implicit large eddy simulation (ILES) paradigm, the dissipative nature of high-resolution shock-capturing schemes is exploited to provide an implicit model of turbulence. Recent 3D simulations suggest that turbulence might play a crucial role in core-collapse supernova explosions, however the fidelity with which turbulence is simulated in these studies is unclear. Especially considering that the accuracy of ILES for the regime of interest in CCSN, weakly compressible and strongly anisotropic, has not been systematically assessed before. In this paper we assess the accuracy of ILES using numerical methods most commonly employed in computational astrophysics by means of a number of local simulations of driven, weakly compressible, anisotropic turbulence. We report a detailed analysis of the way in which the turbulent cascade is influenced by the numerics. Our results suggest that anisotropy and compressibility in CCSN turbulence have little effect on the turbulent kinetic energy spectrum and a...

Radice, David; Ott, Christian D

2015-01-01T23:59:59.000Z

44

Transitions of cloud-topped marine boundary layers characterized by AIRS, MODIS, and a large eddy simulation model  

SciTech Connect (OSTI)

Cloud top entrainment instability (CTEI) is a hypothesized positive feedback between entrainment mixing and evaporative cooling near the cloud top. Previous theoretical and numerical modeling studies have shown that the persistence or breakup of marine boundary layer (MBL) clouds may be sensitive to the CTEI parameter. Collocated thermodynamic profile and cloud observations obtained from the Atmospheric Infrared Sounder (AIRS) and Moderate Resolution Imaging Spectroradiometer (MODIS) instruments are used to quantify the relationship between the CTEI parameter and the cloud-topped MBL transition from stratocumulus to trade cumulus in the northeastern Pacific Ocean. Results derived from AIRS and MODIS are compared with numerical results from the UCLA large eddy simulation (LES) model for both well-mixed and decoupled MBLs. The satellite and model results both demonstrate a clear correlation between the CTEI parameter and MBL cloud fraction. Despite fundamental differences between LES steady state results and the instantaneous snapshot type of observations from satellites, significant correlations for both the instantaneous pixel-scale observations and the long-term averaged spatial patterns between the CTEI parameter and MBL cloud fraction are found from the satellite observations and are consistent with LES results. This suggests the potential of using AIRS and MODIS to quantify global and temporal characteristics of the cloud-topped MBL transition.

Yue, Qing; Kahn, Brian; Xiao, Heng; Schreier, Mathias; Fetzer, E. J.; Teixeira, J.; Suselj, Kay

2013-08-16T23:59:59.000Z

45

Large Eddy Simulation studies of the effects of alignment and wind farm length  

E-Print Network [OSTI]

Large eddy simulations of wind farms are performed to study the effects of wind turbine row alignment with respect to the incoming flow direction. Various wind farms with fixed stream-wise spacing (7.85 rotor diameters) and varying lateral displacements and span-wise turbine spacings are considered, for a fixed inflow direction. Simulations show that, contrary to common belief, a perfectly staggered (checker-board) configuration does not necessarily give the highest average power output. Instead, the highest mean wind farm power output is found to depend on several factors, the most important one being the alignment that leads to minimization of wake effects from turbines in several upstream rows. This alignment typically occurs at significantly smaller angles than those corresponding to perfect staggering. The observed trends have implications for wind farm designs, especially in sites with a well-defined prevailing wind direction.

Stevens, Richard J A M; Meneveau, Charles

2014-01-01T23:59:59.000Z

46

A consistent approach to large eddy simulation using adaptive mesh refinement  

SciTech Connect (OSTI)

The large eddy simulation of turbulent flows is discussed with particular attention paid to the issue of commutation of differentiation and filtering. Multi-level adaptive mesh refinement is proposed as a means of mostly avoiding commutation errors where increased grid resolution is required to capture key flow features. The strategy is to employ multiple uniform grids in a nested hierarchy using a constant-width filter for each grid. It is shown that commutivity of fine and coarse grid filters must be enforced in order to consistently relate variables at different refinement levels. Methods for treating fine grid boundaries and walls are also discussed. It is shown that errors associated with boundary treatments are small and localized.

Cook, A.W.

1999-09-01T23:59:59.000Z

47

High-Resolution Large-Eddy Simulations of Scalar Transport in Atmospheric Boundary Layer Flow over Complex Terrain  

E-Print Network [OSTI]

of Electric Power Industry, Chiba, Japan FOTINI KATOPODES CHOW Department of Civil and Environmental to the choice of numerical simulation parameters than is typically needed for mean wind field predictions. Large-eddy simulation is used in a mesoscale setting, providing modeling advantages through the use of robust turbulence

Chow, Fotini Katopodes

48

A concurrent precursor inflow method for Large Eddy Simulations and applications to finite length wind farms  

E-Print Network [OSTI]

In order to enable simulations of developing wind turbine array boundary layers with highly realistic inflow conditions a concurrent precursor method for Large Eddy Simulations is proposed. In this method we consider two domains simultaneously, i.e. in one domain a turbulent Atmospheric Boundary Layer (ABL) without wind turbines is simulated in order to generate the turbulent inflow conditions for a second domain in which the wind turbines are placed. The benefit of this approach is that a) it avoids the need for large databases in which the turbulent inflow conditions are stored and the correspondingly slow I/O operations and b) we are sure that the simulations are not negatively affected by statically swept fixed inflow fields or synthetic fields lacking the proper ABL coherent structures. Sample applications are presented, in which, in agreement with field data a strong decrease of the power output of downstream wind-turbines with respect to the first row of wind-turbines is observed for perfectly aligned ...

Stevens, Richard J A M; Meneveau, Charles

2014-01-01T23:59:59.000Z

49

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

B. Cuenot, CERFACS, France * Professor A. Dreizler, Technical University of Darmstadt, Germany * Professor B. Geurts, University of Twente, The Netherlands * Professor D. Haworth,...

50

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

3 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting ace007oefelein2013o.pdf More Documents & Publications...

51

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

over broad operating ranges) - Requirements for efficient and routine use of high-performance computing (HPC), development of both predictive and affordable models for advanced...

52

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

for engine combustion and emission control - Efficient and routine use of High-Performance-Computing (HPC) to establish optimal balance between predictive and affordable models...

53

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

54

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10 DOEWashington,LM-04-XXXX OfficeLand and FacilityThe

55

Large-Eddy Simulations of Zero-Net-Mass-Flux Jet Based Separation Control in a Canonical Separated  

E-Print Network [OSTI]

Large-Eddy Simulations of Zero-Net-Mass-Flux Jet Based Separation Control in a Canonical Separated by Mittal et al1 for investigating active separation control using zero-net-mass-flux jets. Large. Zero-net-mass-flux forcing of the separated flow at the superharmonics of this baseline lock

Mittal, Rajat

56

Large eddy simulation/conditional moment closure modeling of swirl-stabilized non-premixed flames with local extinction  

E-Print Network [OSTI]

of Engineering University of Cambridge, Cambridge CB2 1PZ, United Kingdom Tel: +44 1223 332690, Fax: +44 1223 332662 Email: hz283@cam.ac.uk Colloquium topic: 5. Turbulent flames Alternative Colloquium topic: 11. IC engine and gas turbine combustion... mm+10) ? (2.2 words/mm) ? (1 column) + (12 words in caption) = 143 Total = 5966 words Supplemental Material: none Color reproduction: no (color figures are to be printed in gray scale)   1 Large eddy simulation/conditional moment closure...

Zhang, Huangwei; Garmory, Andrew; Cavaliere, Davide E.; Mastorakos, Epaminondas

2014-06-25T23:59:59.000Z

57

Simulations of an offshore wind farm using large eddy simulation and a torque-controlled actuator disc model  

E-Print Network [OSTI]

We present here a computational fluid dynamics (CFD) simulation of Lillgrund offshore wind farm, which is located in the {\\O}resund Strait between Sweden and Denmark. The simulation combines a dynamic representation of wind turbines embedded within a Large-Eddy Simulation CFD solver, and uses hr-adaptive meshing to increase or decrease mesh resolution where required. This allows the resolution of both large scale flow structures around the wind farm, and local flow conditions at individual turbines; consequently, the response of each turbine to local conditions can be modelled, as well as the resulting evolution of the turbine wakes. This paper provides a detailed description of the turbine model which simulates interactions between the wind, turbine rotors, and turbine generators by calculating the forces on the rotor, the body forces on the air, and instantaneous power output. This model was used to investigate a selection of key wind speeds and directions, investigating cases where a row of turbines would ...

Creech, Angus; Maguire, A Eoghan

2014-01-01T23:59:59.000Z

58

Quantification of errors in large-eddy simulations of a spatially evolving mixing layer using polynomial chaos  

SciTech Connect (OSTI)

A stochastic approach based on generalized polynomial chaos (gPC) is used to quantify the error in large-eddy simulation (LES) of a spatially evolving mixing layer flow and its sensitivity to different simulation parameters, viz., the grid stretching in the streamwise and lateral directions and the subgrid-scale (SGS) Smagorinsky model constant (C{sub S}). The error is evaluated with respect to the results of a highly resolved LES and for different quantities of interest, namely, the mean streamwise velocity, the momentum thickness, and the shear stress. A typical feature of the considered spatially evolving flow is the progressive transition from a laminar regime, highly dependent on the inlet conditions, to a fully developed turbulent one. Therefore, the computational domain is divided in two different zones (inlet dependent and fully turbulent) and the gPC error analysis is carried out for these two zones separately. An optimization of the parameters is also carried out for both these zones. For all the considered quantities, the results point out that the error is mainly governed by the value of the C{sub S} constant. At the end of the inlet-dependent zone, a strong coupling between the normal stretching ratio and the C{sub S} value is observed. The error sensitivity to the parameter values is significantly larger in the inlet-dependent upstream region; however, low-error values can be obtained in this region for all the considered physical quantities by an ad hoc tuning of the parameters. Conversely, in the turbulent regime the error is globally lower and less sensitive to the parameter variations, but it is more difficult to find a set of parameter values leading to optimal results for all the analyzed physical quantities. A similar analysis is also carried out for the dynamic Smagorinsky model, by varying the grid stretching ratios. Comparing the databases generated with the different subgrid-scale models, it is possible to observe that the error cost function computed for the streamwise velocity and for the momentum thickness is not significantly sensitive to the used SGS closure. Conversely, the prediction of the shear stress is much more accurate when using a dynamic subgrid-scale model and the variance of the error is lower in magnitude.

Meldi, M.; Sagaut, P. [Institut Jean Le Rond d'Alembert, UMR 7190, Universite Pierre et Marie Curie - Paris 6, F-75005 Paris (France); Salvetti, M. V. [Dipartimento di Ingegneria Aerospaziale, Universita di Pisa, I-56122 Pisa (Italy)

2012-03-15T23:59:59.000Z

59

Investigation of two industrial developmental injectors using Large Eddy Simulation and ProperOrthogonal Decomposition  

E-Print Network [OSTI]

of the two injectors in both inert and reactive situations. The different codes and models are described in Chapter 3 of Ref. [1] and specific details for each simulation are given in the two following sections. 3.1 Injector A An inert LES simulation... and exhibits frequency peaks at 96.4 Hz, 474.3 Hz, 1035 Hz, 1459 Hz (strongest peak), 1603 Hz, 3507 Hz and 5102 Hz among others. Figure 4.6 shows the previous spectra in log-log scale to give an alternative perspective. 4.1.3 Proper Orthogonal Decomposition...

Ayache, Simon

2012-09-03T23:59:59.000Z

60

LARGE EDDY SIMULATION/EULERIAN PROBABILITY DENSITY FUNCTION APPROACH FOR SIMULATING HYDROGEN-ENRICHED GAS TURBINE  

E-Print Network [OSTI]

while the small-scale motions are modeled using sub-filter models. Since gas-turbine relevant combustion providing better input for the combustion models. Developing LES-based combustion models for stationary gas) based approach is used here to deal with the complexities of gas turbine combustion. In the PDF approach

Raman, Venkat

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


61

A quadrature-based LES/transported probability density function approach for  

E-Print Network [OSTI]

and inexpensive pathway for scramjet design. In the recent past, the large eddy simulation (LES) methodology has

Raman, Venkat

62

Assessment of combustion noise in a premixed swirled combustor via Large-eddy simulation  

E-Print Network [OSTI]

, 4, 5] as well as to more complex cases such as gas turbine combustors. [6] Corresponding author. Ph methods such as LES or DNS can directly provide the acoustic field radiated by noise sources. The sources are still calculated by DNS or LES codes whereas the radiated sound is evaluated by acoustic codes

Boyer, Edmond

63

Large-Eddy Simulation of Evaporating Spray in a Coaxial Combustor  

E-Print Network [OSTI]

of engineering applications; e.g. internal combustion engines, liquid and solid propellant rocket motors, gas-turbine representative of gas-turbine combustors. Key words: Sprays, LES, unstructured grids, particle-laden flows complex. In gas turbine combustors, for example, the liquid fuel jet undergoes primary and secondary

Mahesh, Krishnan

64

Applications of large eddy simulation methods to gyrokinetic turbulence A. Ban Navarro, B. Teaca, F. Jenko, G. W. Hammett, T. Happel, and ASDEX Upgrade Team  

E-Print Network [OSTI]

Applications of large eddy simulation methods to gyrokinetic turbulence A. Bañón Navarro, B. Teaca~non Navarro,1,a) B. Teaca,2,3,4 F. Jenko,1,4 G. W. Hammett,4,5 T. Happel,1 and ASDEX Upgrade Team1 1 Max

Hammett, Greg

65

Validation/Uncertainty Quantification for Large Eddy Simulations of the heat flux in the Tangentially Fired Oxy-Coal Alstom Boiler Simulation Facility  

SciTech Connect (OSTI)

The objective of this task is to produce predictive capability with quantified uncertainty bounds for the heat flux in commercial-scale, tangentially fired, oxy-coal boilers. Validation data came from the Alstom Boiler Simulation Facility (BSF) for tangentially fired, oxy-coal operation. This task brings together experimental data collected under Alstom’s DOE project for measuring oxy-firing performance parameters in the BSF with this University of Utah project for large eddy simulation (LES) and validation/uncertainty quantification (V/UQ). The Utah work includes V/UQ with measurements in the single-burner facility where advanced strategies for O2 injection can be more easily controlled and data more easily obtained. Highlights of the work include: • Simulations of Alstom’s 15 megawatt (MW) BSF, exploring the uncertainty in thermal boundary conditions. A V/UQ analysis showed consistency between experimental results and simulation results, identifying uncertainty bounds on the quantities of interest for this system (Subtask 9.1) • A simulation study of the University of Utah’s oxy-fuel combustor (OFC) focused on heat flux (Subtask 9.2). A V/UQ analysis was used to show consistency between experimental and simulation results. • Measurement of heat flux and temperature with new optical diagnostic techniques and comparison with conventional measurements (Subtask 9.3). Various optical diagnostics systems were created to provide experimental data to the simulation team. The final configuration utilized a mid-wave infrared (MWIR) camera to measure heat flux and temperature, which was synchronized with a high-speed, visible camera to utilize two-color pyrometry to measure temperature and soot concentration. • Collection of heat flux and temperature measurements in the University of Utah’s OFC for use is subtasks 9.2 and 9.3 (Subtask 9.4). Several replicates were carried to better assess the experimental error. Experiments were specifically designed for the generation of high-fidelity data from a turbulent oxy-coal flame for the validation of oxy-coal simulation models. Experiments were also conducted on the OFC to determine heat flux profiles using advanced strategies for O2 injection. This is important when considering retrofit of advanced O2 injection in retrofit configurations.

Smith, P.J.; Eddings, E.G.; Ring, T.; Thornock, J.; Draper, T.; Isaac, B.; Rezeai, D.; Toth, P.; Wu, Y.; Kelly, K.

2014-08-01T23:59:59.000Z

66

Quantifying the sensitivity of wind farm performance to array layout options using large-eddy simulation  

E-Print Network [OSTI]

and is coupled with an actuator line model to simulate the effects of the rotating wind turbine blades. A control that is capable of resolving wind turbine blades as rotat- ing actuator lines (not fixed disks) and does not rely by the spacing between wind turbines (along and across the prevailing wind direction) and by their alignment

67

A Large Eddy Simulation of Turbulent Compressible Convection: Differential Rotation in the Solar Convection Zone  

E-Print Network [OSTI]

We present results of two simulations of the convection zone, obtained by solving the full hydrodynamic equations in a section of a spherical shell. The first simulation has cylindrical rotation contours (parallel to the rotation axis) and a strong meridional circulation, which traverses the entire depth. The second simulation has isorotation contours about mid-way between cylinders and cones, and a weak meridional circulation, concentrated in the uppermost part of the shell. We show that the solar differential rotation is directly related to a latitudinal entropy gradient, which pervades into the deep layers of the convection zone. We also offer an explanation of the angular velocity shear found at low latitudes near the top. A non-zero correlation between radial and zonal velocity fluctuations produces a significant Reynolds stress in that region. This constitutes a net transport of angular momentum inwards, which causes a slight modification of the overall structure of the differential rotation near the top. In essence, the {\\it thermodynamics controls the dynamics through the Taylor-Proudman momentum balance}. The Reynolds stresses only become significant in the surface layers, where they generate a weak meridional circulation and an angular velocity `bump'.

Francis J. Robinson; Kwing L. Chan

2000-11-21T23:59:59.000Z

68

Large eddy simulation of soot formation in a turbulent non-premixed jet flame  

SciTech Connect (OSTI)

A recently developed subgrid model for soot dynamics [H. El-Asrag, T. Lu, C.K. Law, S. Menon, Combust. Flame 150 (2007) 108-126] is used to study the soot formation in a non-premixed turbulent flame. The model allows coupling between reaction, diffusion and soot (including soot diffusion and thermophoretic forces) processes in the subgrid domain without requiring ad hoc filtering or model parameter adjustments. The combined model includes the entire process, from the initial phase, when the soot nucleus diameter is much smaller than the mean free path, to the final phase, after coagulation and aggregation, where it can be considered in the continuum regime. A relatively detailed but reduced kinetics for ethylene-air is used to simulate an experimentally studied non-premixed ethylene/air jet diffusion flame. Acetylene is used as a soot precursor species. The soot volume fraction order of magnitude, the location of its maxima, and the soot particle size distribution are all captured reasonably. Along the centerline, an initial region dominated by nucleation and surface growth is established followed by an oxidation region. The diffusion effect is found to be most important in the nucleation regime, while the thermophoretic forces become more influential downstream of the potential core in the oxidation zone. The particle size distribution shows a log-normal distribution in the nucleation region, and a more Gaussian like distribution further downstream. Limitations of the current approach and possible solution strategies are also discussed. (author)

El-Asrag, Hossam [Center For Turbulence Research, Stanford, CA 94305 (United States); Menon, Suresh [School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (United States)

2009-02-15T23:59:59.000Z

69

Coupling a Mesoscale Numerical Weather Prediction Model with Large-Eddy Simulation for Realistic Wind Plant Aerodynamics Simulations (Poster)  

SciTech Connect (OSTI)

Wind plant aerodynamics are influenced by a combination of microscale and mesoscale phenomena. Incorporating mesoscale atmospheric forcing (e.g., diurnal cycles and frontal passages) into wind plant simulations can lead to a more accurate representation of microscale flows, aerodynamics, and wind turbine/plant performance. Our goal is to couple a numerical weather prediction model that can represent mesoscale flow [specifically the Weather Research and Forecasting model] with a microscale LES model (OpenFOAM) that can predict microscale turbulence and wake losses.

Draxl, C.; Churchfield, M.; Mirocha, J.; Lee, S.; Lundquist, J.; Michalakes, J.; Moriarty, P.; Purkayastha, A.; Sprague, M.; Vanderwende, B.

2014-06-01T23:59:59.000Z

70

Using Mesoscale Weather Model Output as Boundary Conditions for Atmospheric Large-Eddy Simulations and Wind-Plant Aerodynamic Simulations (Presentation)  

SciTech Connect (OSTI)

Wind plant aerodynamics are directly affected by the microscale weather, which is directly influenced by the mesoscale weather. Microscale weather refers to processes that occur within the atmospheric boundary layer with the largest scales being a few hundred meters to a few kilometers depending on the atmospheric stability of the boundary layer. Mesoscale weather refers to large weather patterns, such as weather fronts, with the largest scales being hundreds of kilometers wide. Sometimes microscale simulations that capture mesoscale-driven variations (changes in wind speed and direction over time or across the spatial extent of a wind plant) are important in wind plant analysis. In this paper, we present our preliminary work in coupling a mesoscale weather model with a microscale atmospheric large-eddy simulation model. The coupling is one-way beginning with the weather model and ending with a computational fluid dynamics solver using the weather model in coarse large-eddy simulation mode as an intermediary. We simulate one hour of daytime moderately convective microscale development driven by the mesoscale data, which are applied as initial and boundary conditions to the microscale domain, at a site in Iowa. We analyze the time and distance necessary for the smallest resolvable microscales to develop.

Churchfield, M. J.; Michalakes, J.; Vanderwende, B.; Lee, S.; Sprague, M. A.; Lundquist, J. K.; Moriarty, P. J.

2013-10-01T23:59:59.000Z

71

A Large-Eddy Simulation Study of the Influence of Subsidence on the Stably Stratified Atmospheric Boundary Layer  

E-Print Network [OSTI]

Mean pro?les of potential temperature, wind speed, verticalsection. 4.1 Potential Temperature and Wind Speed Pro?lesequilibrium LES potential temperature and wind speed pro?les

Mirocha, Jeffrey D.; Kosovi?, Branko

2010-01-01T23:59:59.000Z

72

Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine...  

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

10 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. ace007oefelein2010o.pdf More Documents &...

73

Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10 DOEWashington,LM-04-XXXX OfficeLand and

74

Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10 DOEWashington,LM-04-XXXX OfficeLand andCombustion Research |

75

Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10 DOEWashington,LM-04-XXXX OfficeLand andCombustion Research

76

LES/probability density function approach for the simulation of an ethanol spray flame  

E-Print Network [OSTI]

LES/probability density function approach for the simulation of an ethanol spray flame Colin Heye a an experimental pilot-stabilized ethanol spray flame. In this particular flame, droplet evaporation occurs away: Large-eddy simulation; Probability density function; Flamelet/progress variable approach; Ethanol

Raman, Venkat

77

Researchers at the National Renewable Energy Laboratory (NREL) develop a high-fidelity large-eddy simulation model  

E-Print Network [OSTI]

to simulate events such as frontal passages through a wind plant and their effect on turbine power production-eddy simulation model designed to predict the performance of large wind plants with a higher degree of accuracy larger, but the power production of these large plants has, in some cases, been lower than initially

78

Large-eddy simulation/probability density function modeling of a non-premixed CO/H2  

E-Print Network [OSTI]

;applicable to practical devices such as gas turbine combustors and internal combustion engines [2­ 4]. In LESLarge-eddy simulation/probability density function modeling of a non-premixed CO/H2 temporally-by-exchange with the mean (IEM) mix- ing model (with molecular transport) are solved by the highly-scalable NGA/HPDF codes

79

An evaluation of the assumed beta probability density function subgrid-scale model for large eddy simulation of nonpremixed, turbulent combustion with heat release  

SciTech Connect (OSTI)

The assumed beta distribution model for the subgrid-scale probability density function (PDF) of the mixture fraction in large eddy simulation of nonpremixed, turbulent combustion is tested, a priori, for a reacting jet having significant heat release (density ratio of 5). The assumed beta distribution is tested as a model for both the subgrid-scale PDF and the subgrid-scale Favre PDF of the mixture fraction. The beta model is successful in approximating both types of PDF but is slightly more accurate in approximating the normal (non-Favre) PDF. To estimate the subgrid-scale variance of mixture fraction, which is required by the beta model, both a scale similarity model and a dynamic model are used. Predictions using the dynamic model are found to be more accurate. The beta model is used to predict the filtered value of a function chosen to resemble the reaction rate. When no model is used, errors in the predicted value are of the same order as the actual value. The beta model is found to reduce this error by about a factor of two, providing a significant improvement. (c) 2000 American Institute of Physics.

Wall, Clifton [Center for Turbulence Research, Stanford University, Stanford, California 94305 (United States)] [Center for Turbulence Research, Stanford University, Stanford, California 94305 (United States); Boersma, Bendiks Jan [Center for Turbulence Research, Stanford University, Stanford, California 94305 (United States)] [Center for Turbulence Research, Stanford University, Stanford, California 94305 (United States); Moin, Parviz [Center for Turbulence Research, Stanford University, Stanford, California 94305 (United States)] [Center for Turbulence Research, Stanford University, Stanford, California 94305 (United States)

2000-10-01T23:59:59.000Z

80

A Comparison of the Dynamic Wake Meandering Model, Large-Eddy...  

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

Wake Meandering Model, Large-Eddy Simulation, and Field Data at the Egmond aan Zee Offshore Wind Plant Preprint M.J. Churchfield and P.J. Moriarty National Renewable Energy...

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


81

NREL researchers are the first to use a high-performance com-puting tool for a large-eddy simulation of an entire wind plant.  

E-Print Network [OSTI]

Denmark and Sweden and compared results with more than a year's worth of plant data.The simulated power at least 50% wastepaper, including 10% post consumer waste. NREL Develops Simulations forWind Plant Power-eddy simulation of an entire wind plant. Researchers at the National Renewable Energy Laboratory's (NREL) National

82

Development and assessment of a coupled strategy for conjugate heat transfer with Large Eddy Simulation: Application to a cooled turbine blade  

E-Print Network [OSTI]

parameters. The coupled tool is then applied to a cooled turbine blade model where results demonstrate both walls is an important phenomenon in combustion chambers and a main design constraint in gas turbines Simulation: Application to a cooled turbine blade F. Duchaine a,*, A. Corpron b , L. Pons b , V. Moureau b

Nicoud, Franck

83

A multivariate quadrature based moment method for LES based modeling of supersonic combustion  

E-Print Network [OSTI]

function (PDF) approach is a powerful technique for large eddy simulation (LES) based modeling of scramjet and robust scramjet engine is critical for the1 realization of hypersonic flight. Availability of predictive computational models will provide2 a fast and efficient means for designing and optimizing scramjet engines

Raman, Venkat

84

Study of natural ventilation in buildings with large eddy simulation  

E-Print Network [OSTI]

With the discovery of many economic, environmental, and health problems in sealed and mechanically ventilated buildings, the concept of natural ventilation has been revived. "Buildings that breathe" have become more and ...

Jiang, Yi, 1972-

2002-01-01T23:59:59.000Z

85

Large Eddy Simulation of a Turbulent Buoyant Helium Philip Smith  

E-Print Network [OSTI]

.thornock@utah.edu ABSTRACT At the Institute for Clean and Secure Energy at the University of Utah we are focused on education agencies and private industry companies to promote rapid deployment of new technologies through the use to solve many industrially relevant problems such as industrial flares, oxy-coal combustion processes

Utah, University of

86

Large Eddy Simulation of Industrial Flares Philip Smith  

E-Print Network [OSTI]

At the Institute for Clean and Secure Energy at the University of Utah we are focused on education through and private industry companies to promote rapid deployment of new technologies through the use of high to solve many industrially relevant problems such as industrial flares, oxy-coal combustion processes

Utah, University of

87

Large Eddy Simulations of Jet Flow Interactions Within Rod Bundles  

E-Print Network [OSTI]

The present work investigates the turbulent jet flow mixing of downward impinging jets within a staggered rod bundle based on previous experimental work. The two inlet jets had Reynold's numbers of 11,160 and 6,250 and were chosen to coincide...

Salpeter, Nathaniel O.

2010-07-14T23:59:59.000Z

88

Large eddy simulation of turbulence within heat exchangers  

E-Print Network [OSTI]

be problematic if the turbulent energy is near the tubes natural frequency. However, as compared to the drag force exerted by the fluid, vortex shedding and turbulent buffeting are are of lesser significance than fluid elastic instability. Fluid elastic... on turbulent statistics. Is is widely accepted that there are four basic sources of cross-flow excitation in tube banks: vortex shedding, turbulent buffeting, fluid-elastic instability, and acoustic resonance (Grover et aL 1978). Vortex shedding is a...

Pruitt, John Myron

2012-06-07T23:59:59.000Z

89

Large Eddy Simulations of Combustor Liner Flows | Argonne Leadership  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickrinformationPostdocs space CombinedValues shown forShadeand

90

Sandia National Laboratories: Large eddy simulation of a lifted ethylene  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLS ExhibitIowa State UniversityFacilityLIMITS Liquidflame using a

91

Dynamic procedure for filtered gyrokinetic simulations  

SciTech Connect (OSTI)

Large eddy simulations (LES) of gyrokinetic plasma turbulence are investigated as interesting candidates to decrease the computational cost. A dynamic procedure is implemented in the gene code, allowing for dynamic optimization of the free parameters of the LES models (setting the amplitudes of dissipative terms). Employing such LES methods, one recovers the free energy and heat flux spectra obtained from highly resolved direct numerical simulations. Systematic comparisons are performed for different values of the temperature gradient and magnetic shear, parameters which are of prime importance in ion temperature gradient driven turbulence. Moreover, the degree of anisotropy of the problem, which can vary with parameters, can be adapted dynamically by the method that shows gyrokinetic large eddy simulation to be a serious candidate to reduce numerical cost of gyrokinetic solvers.

Morel, P.; Banon Navarro, A.; Albrecht-Marc, M.; Carati, D. [Statistical and Plasma Physics Laboratory, Universite Libre de Bruxelles, Bruxelles 1050 (Belgium); Merz, F.; Goerler, T.; Jenko, F. [Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, D-85748 Garching (Germany)

2012-01-15T23:59:59.000Z

92

Numerical simulation of flow distribution for pebble bed high temperature gas cooled reactors  

E-Print Network [OSTI]

?....................................................................................26 V CFD MODELLING ...................................................................................28 V.1 Computational Fluid Dynamics (CFD) ..........................................28 V.2 The History.... Hassan The premise of the work presented here is to use a common analytical tool, Computational Fluid Dynamics (CFD), along with different turbulence models. Eddy viscosity models as well as state-of-the-art Large Eddy Simulation (LES) were...

Yesilyurt, Gokhan

2004-09-30T23:59:59.000Z

93

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect (OSTI)

Application and testing of the new combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this 12th quarterly report. In this quarter, continued validation and testing of the combustion LES code was performed for the DOE-SimVal combustor. Also, beta testing by six consortium members was performed for various burner and combustor configurations. A list of suggested code improvements by the beta testers was itemized. Work will continue in FY04. A conditional modification to the contract will be granted. The additional work will focus on modeling/analyzing the SimVal experiments.

Clifford Smith

2003-09-01T23:59:59.000Z

94

Simulating flame lift-off characteristics of diesel and biodiesel fuels using detailed chemical-kinetic mechanisms and LES turbulence model.  

SciTech Connect (OSTI)

Combustion in direct-injection diesel engines occurs in a lifted, turbulent diffusion flame mode. Numerous studies indicate that the combustion and emissions in such engines are strongly influenced by the lifted flame characteristics, which are in turn determined by fuel and air mixing in the upstream region of the lifted flame, and consequently by the liquid breakup and spray development processes. From a numerical standpoint, these spray combustion processes depend heavily on the choice of underlying spray, combustion, and turbulence models. The present numerical study investigates the influence of different chemical kinetic mechanisms for diesel and biodiesel fuels, as well as Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) turbulence models on predicting flame lift-off lengths (LOLs) and ignition delays. Specifically, two chemical kinetic mechanisms for n-heptane (NHPT) and three for biodiesel surrogates are investigated. In addition, the RNG k-{epsilon} (RANS) model is compared to the Smagorinsky based LES turbulence model. Using adaptive grid resolution, minimum grid sizes of 250 {micro}m and 125 {micro}m were obtained for the RANS and LES cases respectively. Validations of these models were performed against experimental data from Sandia National Laboratories in a constant volume combustion chamber. Ignition delay and flame lift-off validations were performed at different ambient temperature conditions. The LES model predicts lower ignition delays and qualitatively better flame structures compared to the RNG k-{epsilon} model. The use of realistic chemistry and a ternary surrogate mixture, which consists of methyl decanoate, methyl 9-decenoate, and NHPT, results in better predicted LOLs and ignition delays. For diesel fuel though, only marginal improvements are observed by using larger size mechanisms. However, these improved predictions come at a significant increase in computational cost.

Som, S; Longman, D. E.; Luo, Z; Plomer, M; Lu, T; Senecal, P.K.; Pomraning, E (Energy Systems); (Univ. of Connecticut); (CONVERGENT Science)

2012-01-01T23:59:59.000Z

95

Adaptive LES Methodology for Turbulent Flow Simulations  

SciTech Connect (OSTI)

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 have recently been completed at the Japanese Earth Simulator (Yokokawa et al. 2002, Kaneda et al. 2003) using a resolution of 40963 (approximately 10{sup 11}) grid points with a Taylor-scale Reynolds number of 1217 (Re {approx} 10{sup 6}). Impressive as these calculations are, performed on one of the world's fastest super computers, more brute computational power would be needed to simulate the flow over the fuselage of a commercial aircraft at cruising speed. Such a calculation would require on the order of 10{sup 16} grid points and would have a Reynolds number in the range of 108. Such a calculation would take several thousand years to simulate one minute of flight time on today's fastest super computers (Moin & Kim 1997). Even using state-of-the-art zonal approaches, which allow DNS calculations that resolve the necessary range of scales within predefined 'zones' in the flow domain, this calculation would take far too long for the result to be of engineering interest when it is finally obtained. Since computing power, memory, and time are all scarce resources, the problem of simulating turbulent flows has become one of how to abstract or simplify the complexity of the physics represented in the full Navier-Stokes (NS) equations in such a way that the 'important' physics of the problem is captured at a lower cost. To do this, a portion of the modes of the turbulent flow field needs to be approximated by a low order model that is cheaper than the full NS calculation. This model can then be used along with a numerical simulation of the 'important' modes of the problem that cannot be well represented by the model. The decision of what part of the physics to model and what kind of model to use has to be based on what physical properties are considered 'important' for the problem. It should be noted that 'nothing is free', so any use of a low order model will by definition lose some information about the original flow.

Oleg V. Vasilyev

2008-06-12T23:59:59.000Z

96

Anomalous Scaling of Structure Functions and Dynamic Constraints on Turbulence Simulations  

E-Print Network [OSTI]

The connection between anomalous scaling of structure functions (intermittency) and numerical methods for turbulence simulations is discussed. It is argued that the computational work for direct numerical simulations (DNS) of fully developed turbulence increases as $Re^{4}$, and not as $Re^{3}$ expected from Kolmogorov's theory, where $Re$ is a large-scale Reynolds number. Various relations for the moments of acceleration and velocity derivatives are derived. An infinite set of exact constraints on dynamically consistent subgrid models for Large Eddy Simulations (LES) is derived from the Navier-Stokes equations, and some problems of principle associated with existing LES models are highlighted.

Victor Yakhot; Katepalli R. Sreenivasan

2005-06-20T23:59:59.000Z

97

LES-based Eulerian PDF approach for the simulation of scramjet combustors  

E-Print Network [OSTI]

LES-based Eulerian PDF approach for the simulation of scramjet combustors Heeseok Koo , Pratik simulation (LES) based simulation of scramjets is developed. To solve the high- dimensional joint of moments (SeQMOM); Probability density function; Scramjet combustor; Oscillatory reactive motion 1

Raman, Venkat

98

Natural Ventilation in Buildings: Measurement in a Wind Tunnel and Numerical Simulation with Large Eddy Simulation  

E-Print Network [OSTI]

save energy compared to mechanical ventilation systems. In building design the prediction save energy consumed by the heating, ventilating, and air- conditioning systems in a building. In a naturally ventilated building, air is driven in and out due to pressure differences produced by wind

Chen, Qingyan "Yan"

99

Prediction of Small-Scale Cavitation in a High Speed Flow Over an Open Cavity Using Large Eddy  

E-Print Network [OSTI]

Prediction of Small-Scale Cavitation in a High Speed Flow Over an Open Cavity Using Large Eddy- gether with the cavitation models predict that inception occurs near the trailing edge similar in cavitation. 1 INTRODUCTION The problem of cavitation has been widely studied owing to its influence

Apte, Sourabh V.

100

ON THE EULERIAN LARGE EDDY SIMULATION OF DISPERSE PHASE FLOWS: AN ASYMPTOTIC PRESERVING SCHEME FOR  

E-Print Network [OSTI]

. These constraints are: 1/as the resulting sound speed is inversely proportional to the Stokes number, it is highly on the accurate description of both the continuous carrier phase, gaseous or liquid, and the discrete particulate

Paris-Sud XI, Université de

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


101

Massively Parallel Spectral Element Large Eddy Simulation of a Turbulent Channel Using Wall Models  

E-Print Network [OSTI]

Wall-bounded turbulent flows are prevalent in engineering and industrial applications. Walls greatly affect turbulent characteristics in many ways including production and propagation of turbulent stresses. While computational fluid dynamics can...

Rabau, Joshua I

2013-05-01T23:59:59.000Z

102

Large Eddy Simulation based Studies of Reacting and Non-reacting Transverse Jets in Supersonic Crossflow  

E-Print Network [OSTI]

-ignition and flame stability. To ensure e cient and robust combustion inside scramjet engines, fuel injection of these designs is necessary for the design of e cient scramjet engines. The focus of this work is to use detailed

Raman, Venkat

103

Large-Eddy Simulation of a Supersonic Inlet-Isolator Heeseok Koo  

E-Print Network [OSTI]

in a dual-mode scramjet engine that provides stable compressed flow to the combustor. However in the design of robust scramjet engines. Here, the predictive capability of the large ramjet engines are vital for the realization of hypersonic flight. Scramjets are relatively simple

Raman, Venkat

104

Turbulence prediction using the large eddy simulation method in staggered and inlined bundles  

E-Print Network [OSTI]

for the fruitful discussions and technical support they provided throughout the investigation. Discussions with Mr. Wael Ibrahim, Mr. SaeYul Lee and Mr. John Pruitt were also helpful for a better understanding of the intricacies of turbulence and computational...

Barsamian, Hagop Raffi

1994-01-01T23:59:59.000Z

105

Complex Effects in Large Eddy Simulation Limassol, September 20-24,2005  

E-Print Network [OSTI]

a requirement for combustion instability studies. 1 INTRODUCTION In the highly competitive field of power generation, gas turbines have gained an increasing role over the years. New emission regulations and growing

106

Large-Eddy Simulations of Perfectly-Expanded Supersonic Jets: Quality Assessment and Validation  

E-Print Network [OSTI]

but use an emulation procedure, with sources and sinks with zero net mass flux. This procedure gives the contributions of the different explicit models introduced in the calculation (artificial dissipation, subgrid

Mendez, Simon

107

LARGE EDDY SIMULATION FOR TURBULENT MHD FLOWS A. LABOVSKY AND C. TRENCHEA  

E-Print Network [OSTI]

problems such as plasma confinement, controlled thermonuclear fusion, liquid-metal cooling of nuclear

Trenchea, Catalin

108

Assessment of combustion noise in a premixed swirled combustor via Large-Eddy Simulation  

E-Print Network [OSTI]

­5] as well as to more complex cases such as gas turbine combustors [6]. Computational techniques must be large enough to include the sources of noise as well as part of the acoustic near field [7 Acoustic analogy Direct computation Hybrid computation a b s t r a c t Today, much of the current effort

Nicoud, Franck

109

Numerical errors in the computation of subfilter scalar variance in large eddy simulations  

E-Print Network [OSTI]

Mechanics, The University of Texas at Austin, Austin, Texas 78712, USA 2 Center for Turbulence Research of specific model forms. Like other subfilter quantities, such as kinetic energy, subfilter variance can-rule manipulations used to derive convection, diffusion, and production terms associated with the square

Raman, Venkat

110

Large-eddy simulation of evaporating spray in a coaxial combustor  

E-Print Network [OSTI]

on unstructured grids at conditions representative of gas-turbine combustors. Ã? 2009 The Combustion Institute of engineering applications; e.g., inter- nal combustion engines, liquid and solid propel- lant rocket motors, gas-turbine aircraft engines, cyclone combustors, and biomass gasifiers. The physics of such flows

Apte, Sourabh V.

111

Large-Eddy Simulations of a Drizzling, Stratocumulus-Topped Marine Boundary  

E-Print Network [OSTI]

and Technology Yokahama, Japan Markus D. Petters Department of Atmospheric Science Colorado State University, Colorado Kozo Nakamura Frontier Research Center for Global Change Japan Agency for Marine-Earth Science on the global heat budget (Klein and Hartmann 1993). Evidence suggests they constitute a leading

Stevens, Bjorn

112

Large eddy simulations of premixed turbulent flame dynamics : combustion modeling, validation and analysis  

E-Print Network [OSTI]

High efficiency, low emissions and stable operation over a wide range of conditions are some of the key requirements of modem-day combustors. To achieve these objectives, lean premixed flames are generally preferred as ...

Kewlani, Gaurav

2014-01-01T23:59:59.000Z

113

Fidelity of Analytic Drop Size Distributions in Drizzling Stratiform Clouds Based on Large-Eddy Simulations  

E-Print Network [OSTI]

Cloud microphysical parameterizations and retrievals rely heavily on knowledge of the shape of drop size distributions (DSDs). Many investigations assume that DSDs in the entire or partial drop size range may be approximated ...

Kogan, Yefim L.; Kogan, Zena N.; Mechem, David B.

2009-08-01T23:59:59.000Z

114

Large eddy simulation of supersonic combustion with application to scramjet engines  

E-Print Network [OSTI]

[105] (a) Detail of noz- zle and combustor (b) Detail of combustor entrance and injector geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 7.2 Hydrogen mass fraction distribution on the combustor centreline . 185 7.3 Planes... of temperature and oxygen mole fraction experimental data down the axis of the SCHOLAR combustor . . . . . . . . . . . . . 186 7.4 Experimental pressure distributions for the upper (left) and lower (right) walls of the combustor, after 10 and 24 seconds...

Cocks, Peter

2011-07-12T23:59:59.000Z

115

Large-eddy Simulation of the Nighttime Stable Atmospheric Boundary Layer  

E-Print Network [OSTI]

by providing accurate vertical wind speed profiles. TurbineC-1 Schematic of vertical wind speed and density profiles in50,000 s) vertical profiles of wind speed for the moderately

Zhou, Bowen

2012-01-01T23:59:59.000Z

116

Large-Eddy Simulation of Pulverized Coal Jet Flame -Effect of Oxygen Concentration on NOx formation  

E-Print Network [OSTI]

than those by using other fossil fuels [1]. It is therefore important to develop clean coal technology for pulverized coal fired power plants, in order to control such emissions and to reduce the environmental impact. Regarding the reduction...

Muto, Masaya; Watanabe, Hiroaki; Kurose, Ryoichi; Komori, Satoru; Balusamy, Saravanan; Hochgreb, Simone

2015-01-01T23:59:59.000Z

117

Large Eddy Simulation of PBL Stratocumulus: Comparison of Multi-Dimensional and IPA Longwave Radiative Forcing  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6, 2011 CERN 73-11Large area avalanche

118

Large-Eddy Simulation for Green Energy and Propulsion Systems | Argonne  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6, 2011 CERN 73-11Large areaLargefor High

119

Numerical Investigation of a Transverse Jet in a Supersonic Crossflow using Large Eddy Simulation  

E-Print Network [OSTI]

Density Thermal conductivity Ratio of specific heats µl Fluid viscosity µs Non linear artificial shear of the free stream supersonic flow by the transverse jet, a bow shock is also produced. It causes the upstream

Paris-Sud XI, Université de

120

Large Eddy Simulation of laser ignition and compressible reacting flow in a rocket-like  

E-Print Network [OSTI]

combustion devices. The technical needs for internal-combustion (IC) engines and aircraft combustors have in a rocket engine is a critical problem for combustion cham- ber design. Delayed ignition may lead to high without failure. The combustion initiation in rocket engines is usually based on pyrotechnic devices

Paris-Sud XI, Université de

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


121

Study of natural ventilation in buildings by large eddy simulation Yi Jiang and Qingyan Chen*  

E-Print Network [OSTI]

in buildings can create a comfortable and healthy indoor environment, and can save energy used constitutes a major part of the energy consumption in buildings. To reduce energy used by mechanical cooling is driven in and out of a building due to pressure differences, produced by wind and buoyancy forces

Chen, Qingyan "Yan"

122

Large-eddy Simulation of the Nighttime Stable Atmospheric Boundary Layer  

E-Print Network [OSTI]

coordinate and (b) wind and potential temperature at the up-coordinate and (b) wind and potential temperature at the up-Mean profiles of wind and potential temperature, turbulent

Zhou, Bowen

2012-01-01T23:59:59.000Z

123

LARGE EDDY SIMULATION AND MEASUREMENTS IN A TURBULENT ROTOR-STATOR FLOW  

E-Print Network [OSTI]

). The flow has significant industrial applications, such as internal gas- turbine flows and computer hard model is based on Spectral Vanishing Viscosity (SVV). The key particularity of this model

Paris-Sud XI, Université de

124

NREL Develops Simulations for Wind Plant Power and Turbine Loads (Fact Sheet)  

SciTech Connect (OSTI)

NREL researchers are the first to use a high-performance computing tool for a large-eddy simulation of an entire wind plant.

Not Available

2012-04-01T23:59:59.000Z

125

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect (OSTI)

Further development of a combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this fifth quarterly report. CFD Research Corporation (CFDRC) is developing the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. In this quarter, in-situ adaptive tabulation (ISAT) for efficient chemical rate storage and retrieval was further tested in the LES code. The use of multiple trees and periodic tree dumping was investigated. Implementation of the Linear Eddy Model (LEM) for subgrid chemistry was finished for serial applications. Validation of the model on a backstep reacting case was performed. Initial calculations of the SimVal experiment were performed for various barrel lengths, equivalence ratio, combustor shapes, and turbulence models. The effects of these variables on combustion instability was studied. Georgia Tech continues the effort to parameterize the LEM over composition space so that a neural net can be used efficiently in the combustion LES code. Next quarter, the 2nd consortium meeting will be held at CFDRC. LES software development and testing will continue. Alpha testing of the code will be performed on cases of interest to the industrial consortium. Optimization of subgrid models will be pursued, particularly with the ISAT approach. Also next quarter, the demonstration of the neural net approach, for chemical kinetics speed-up in CFD-ACE+, should be accomplished.

Steve Cannon; Baifang Zuo; Virgil Adumitroaie; Keith McDaniel; Cliff Smith

2002-01-01T23:59:59.000Z

126

Diagnosis of Differences Between Stratiform Clouds Simulated by Large-Eddy Simulation and Single-Column Models  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesData FilesShape, Density,TiO2(110).DevelopmentDeviceDiagnosis

127

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect (OSTI)

Application and testing of the new combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this 10th quarterly report. CFD Research Corporation has developed the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. In this quarter, validation and testing of the combustion LES code was performed for the DOE-Simval combustor. Also, Beta testing by consortium members was performed for various burner and combustor configurations. In the two quarters ahead, CFDRC will validate the code on the new DOE SimVal experiments. Experimental data from DOE should be available in June 2003, though LES calculations are currently being performed. This will ensure a truly predictive test of the software. CFDRC will also provide help to the consortium members on running their cases, and incorporate improvements to the software suggested by the beta testers. The beta testers will compare their predictions with experimental measurements and other numerical calculations. At the end of this project (October, 2003), a final released version of the software will be available for licensing to the general public.

Steven Cannon; Clifford Smith

2003-04-01T23:59:59.000Z

128

CgWind: A high-order accurate simulation tool for wind turbines and wind farms  

SciTech Connect (OSTI)

CgWind is a high-fidelity large eddy simulation (LES) tool designed to meet the modeling needs of wind turbine and wind park engineers. This tool combines several advanced computational technologies in order to model accurately the complex and dynamic nature of wind energy applications. The composite grid approach provides high-quality structured grids for the efficient implementation of high-order accurate discretizations of the incompressible Navier-Stokes equations. Composite grids also provide a natural mechanism for modeling bodies in relative motion and complex geometry. Advanced algorithms such as matrix-free multigrid, compact discretizations and approximate factorization will allow CgWind to perform highly resolved calculations efficiently on a wide class of computing resources. Also in development are nonlinear LES subgrid-scale models required to simulate the many interacting scales present in large wind turbine applications. This paper outlines our approach, the current status of CgWind and future development plans.

Chand, K K; Henshaw, W D; Lundquist, K A; Singer, M A

2010-02-22T23:59:59.000Z

129

A Study of Strain Rate Effects for Turbulent Premixed Flames with Application to LES of a Gas Turbine Combustor Model  

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

Large-scale strain rate field, a resolved quantity which is easily computable in large-eddy simulations (LES), could have profound effects on the premixed flame properties by altering the turbulent flame speed and inducing local extinction. The role of the resolved strain rate has been investigated in a posterior LES study of GE lean premixed dry low NOx emissions LM6000 gas turbine combustor model. A novel approach which is based on the coupling of the lineareddy model with a one-dimensional counter-flow solver has been applied to obtain the parameterizations of the resolved premixed flame properties in terms of the reactive progress variable, the local strain rate measure, and local Reynolds and Karlovitz numbers. The strain rate effects have been analyzed by comparing LES statistics for several models of the turbulent flame speed, i.e, with and without accounting for the local strain rate effects, with available experimental data. The sensitivity of the simulation results to the inflow velocity conditions as well as the grid resolution have been also studied. Overall, the results suggest the necessity to represent the strain rate effects accurately in order to improve LES modeling of the turbulent flame speed.

Kemenov, Konstantin A.; Calhoon, William H.

2015-03-24T23:59:59.000Z

130

Characterizing the Separation and Reattachment of Suction Surface Boundary Layer in Low Pressure Turbine Using Massively Parallel Large Eddy Simulations  

E-Print Network [OSTI]

cient, p p1 1 2 U21 Cax Axial chord H12 Form factor R11 Correlation coe cient Tu Turbulence intensity Ue Boundary layer edge velocity U1 Freestream velocity 1 Displacement thickness of a boundary layer 2 Momentum thickness of a boundary...

Jagannathan, Shriram

2012-02-14T23:59:59.000Z

131

A Large-Eddy Simulation Study of the Influence of Subsidence on the Stably Stratified Atmospheric Boundary Layer  

E-Print Network [OSTI]

snow/ice pack interior, which constrains surface cooling.snow/ice pack. They suggest that the strong cooling of theice pack. During clear-sky conditions, strong radiative cooling

Mirocha, Jeffrey D.; Kosovi?, Branko

2010-01-01T23:59:59.000Z

132

Final Report on the “New Directions in the Variational Multiscale Formulation of Large Eddy Simulation of Turbulence”  

SciTech Connect (OSTI)

In the report we present a summary of the new models and algorithms developed by the PI and the students supported by this grant. These developments are described in detail in ten peer-reviewed journal articles that acknowledge support from this grant.

Oberai, Assad A [Rensselaer Polytechnic Instistute

2013-07-16T23:59:59.000Z

133

A Large-Eddy Simulation Study of the Influence of Subsidence on the Stably Stratified Atmospheric Boundary Layer  

E-Print Network [OSTI]

temperature, wind speed, vertical heat and momentum ?uxes,ABL is vertical wind shear, with the wind speed at the

Mirocha, Jeffrey D.; Kosovi?, Branko

2010-01-01T23:59:59.000Z

134

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect (OSTI)

Further development of a combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this fourth quarterly report. CFD Research Corporation (CFDRC) is developing the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. In this quarter, in-situ adaptive tabulation (ISAT) for efficient chemical rate storage and retrieval was further tested in the LES code. A more efficient PK binary tree data structure is being developed and implemented to replace the original BSP-tree structure. Implementation of the Linear Eddy Model (LEM) for subgrid chemistry has also started. In addition, Georgia Tech has shown that a chemical neural net (1-step chemistry) trained at certain turbulent conditions can be used at different turbulent conditions without expensive chemical kinetic integrations. Initial evaluations of the code accuracy have also been carried out. The evaluations cases included the unstable DOE-NETL combustor and a lid-driven cavity. Next quarter, the ISAT algorithm for efficient chemistry will be tested for the unstable DOE-NETL combustor. Initial flame calculations, with the LEM subgrid chemistry model are planned. Also, demonstration of the neural net approach, for chemical kinetics speed-up, should be demonstrated for more advanced chemistry (8-species and 19-species mechanisms).

Steve Cannon; Virgil Adumitroaie; Keith McDaniel; Cliff Smith

2001-10-01T23:59:59.000Z

135

Effects of Sea-Salt Aerosols on Precipitation in Simulations of Shallow Cumulus  

E-Print Network [OSTI]

A suite of large-eddy simulations with size-resolving microphysical processes was performed in order to assess effects of sea-salt aerosols on precipitation process in trade cumulus. Simulations based on observations from ...

Kogan, Yefim L.; Mechem, David B.; Choi, Kityan

2012-02-01T23:59:59.000Z

136

IFP Energies nouvelles International Conference Rencontres Scientifiques d'IFP Energies nouvelles  

E-Print Network [OSTI]

LES4ICE 2012 - Large Eddy Simulation for Internal Combustion Engine Flows LES4ICE 2012 - La simulation engine combustion is critical to improve engine efficiency while reducing pol- lutant emissions. To study aux grandes échelles pour les écoulements dans les moteurs à combustion interne Large-Eddy Simulation

Paris-Sud XI, Université de

137

This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 8579  

E-Print Network [OSTI]

-Dominik and Poinsot, Thierry Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion-oatao@listes.diff.inp-toulouse.fr #12;Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion chambers. P) Large Eddy Simulation (LES) methods and (2) acoustic solvers. These strong com- bustion instabilities

Mailhes, Corinne

138

Inflow turbulence generation for eddy-resolving simulations of turbomachinery flows  

E-Print Network [OSTI]

A simple variant of recycling and rescaling method to generate inflow turbulence using unstructured grid CFD codes is presented. The method has been validated on large eddy simulation of spatially developing flat plate turbulent boundary layer. The proposed rescaling algorithm is based on the momentum thickness which is more robust and essentially obviates the need of finding the edge of the turbulent boundary layer in unstructured grid codes. Extension of this algorithm to hybrid RANS/LES type of approaches and for wall-bounded turbomachinery flows is also discussed. Results from annular diffuser with different inflow boundary layer characteristics is presented as an example application to show the utility of such an algorithm.

Arolla, Sunil K

2014-01-01T23:59:59.000Z

139

Multiscale eddy simulation for moist atmospheric convection: Preliminary investigation  

SciTech Connect (OSTI)

A multiscale computational framework is designed for simulating atmospheric convection and clouds. In this multiscale framework, large eddy simulation (LES) is used to model the coarse scales of 100 m and larger, and a stochastic, one-dimensional turbulence (ODT) model is used to represent the fine scales of 100 m and smaller. Coupled and evolving together, these two components provide a multiscale eddy simulation (MES). Through its fine-scale turbulence and moist thermodynamics, MES allows coarse grid cells to be partially cloudy and to encompass cloudy–clear air mixing on scales down to 1 m; in contrast, in typical LES such fine-scale processes are not represented or are parameterized using bulk deterministic closures. To illustrate MES and investigate its multiscale dynamics, a shallow cumulus cloud field is simulated. The fine-scale variability is seen to take a plausible form, with partially cloudy grid cells prominent near cloud edges and cloud top. From earlier theoretical work, this mixing of cloudy and clear air is believed to have an important impact on buoyancy. However, contrary to expectations based on earlier theoretical studies, the mean statistics of the bulk cloud field are essentially the same in MES and LES; possible reasons for this are discussed, including possible limitations in the present formulation of MES. One difference between LES and MES is seen in the coarse-scale turbulent kinetic energy, which appears to grow slowly in time due to incoherent stochastic fluctuations in the buoyancy. This and other considerations suggest the need for some type of spatial and/or temporal filtering to attenuate undersampling of the stochastic fine-scale processes.

Stechmann, Samuel N., E-mail: stechmann@wisc.edu [Department of Mathematics, University of Wisconsin-Madison (United States); Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison (United States)

2014-08-15T23:59:59.000Z

140

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS  

SciTech Connect (OSTI)

In this project, an advanced computational software tool was developed for the design of low emission combustion systems required for Vision 21 clean energy plants. Vision 21 combustion systems, such as combustors for gas turbines, combustors for indirect fired cycles, furnaces and sequestrian-ready combustion systems, will require innovative low emission designs and low development costs if Vision 21 goals are to be realized. The simulation tool will greatly reduce the number of experimental tests; this is especially desirable for gas turbine combustor design since the cost of the high pressure testing is extremely costly. In addition, the software will stimulate new ideas, will provide the capability of assessing and adapting low-emission combustors to alternate fuels, and will greatly reduce the development time cycle of combustion systems. The revolutionary combustion simulation software is able to accurately simulate the highly transient nature of gaseous-fueled (e.g. natural gas, low BTU syngas, hydrogen, biogas etc.) turbulent combustion and assess innovative concepts needed for Vision 21 plants. In addition, the software is capable of analyzing liquid-fueled combustion systems since that capability was developed under a concurrent Air Force Small Business Innovative Research (SBIR) program. The complex physics of the reacting flow field are captured using 3D Large Eddy Simulation (LES) methods, in which large scale transient motion is resolved by time-accurate numerics, while the small scale motion is modeled using advanced subgrid turbulence and chemistry closures. In this way, LES combustion simulations can model many physical aspects that, until now, were impossible to predict with 3D steady-state Reynolds Averaged Navier-Stokes (RANS) analysis, i.e. very low NOx emissions, combustion instability (coupling of unsteady heat and acoustics), lean blowout, flashback, autoignition, etc. LES methods are becoming more and more practical by linking together tens to hundreds of PCs and performing parallel computations with fine grids (millions of cells). Such simulations, performed in a few weeks or less, provide a very cost-effective complement to experimental testing. In 5 years, these same calculations can be performed in 24 hours or less due to the expected increase of computing power and improved numerical techniques. This project was a four-year program. During the first year, the project included the development and implementation of improved chemistry (reduced GRI mechanism), subgrid turbulence (localized dynamic), and subgrid combustion-turbulence interaction (Linear Eddy) models into the CFD-ACE+ code. University expertise (Georgia Tech and University of California, Berkeley) was utilized to help develop and implement these advanced submodels into the unstructured, parallel CFD flow solver, CFD-ACE+. Efficient numerical algorithms that rely on in situ look-up tables or artificial neural networks were implemented for chemistry calculations. In the second year, the combustion LES software was evaluated and validated using experimental data from lab-scale and industrial test configurations. This code testing (i.e., alpha testing) was performed by CFD Research Corporation's engineers. During the third year, six industrial and academic partners used the combustion LES code and exercised it on problems of their choice (i.e., beta testing). Final feedback and optimizations were then implemented into the final release (licensed) version of the combustion LES software to the general public. An additional one-year task was added for the fourth year of this program entitled, ''LES Simulations of SIMVAL Results''. For this task, CFDRC performed LES calculations of selected DoE SIMVAL cases, and compared predictions with measurements from NETL. In addition to comparisons with NOx and CO exit measurements, comparisons were made to measured pressure oscillations. Potential areas of improvement for combustion and turbulence models were identified. In conclusion, this program advanced the state-of-the-art in combustion LES an

Clifford E. Smith; Steven M. Cannon; Virgil Adumitroaie; David L. Black; Karl V. Meredith

2005-01-01T23:59:59.000Z

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


141

Large-eddy simulations of structure effects of an upstream elbow main pipe on hot and cold fluids mixing in a vertical tee junction  

E-Print Network [OSTI]

power plant. Thermal fatigue is an important degradation mechanism for the life time assessment in e.g. nuclear power plants. In the present work, the mixing of a hot and a cold fluid stream place both in nuclear plants involving light water and sodium cooled reactors due to thermal fatigue

Attinger, Daniel

142

Localized dynamic subgrid closure for simulation of magnetohydrodynamic turbulence  

SciTech Connect (OSTI)

A local dynamic kinetic energy model (LDKM) for large-eddy simulation (LES) of magnetohydrodynamic (MHD) turbulence is proposed. The proposed MHD turbulence model evaluates all model coefficients locally and dynamically without any ad hoc averaging. This model also does not assume low magnetic Reynolds numbers. The turbulent residual-helicity effect ({alpha}-effect) appearing in the magnetic induction equation is successfully modeled. For validation, high-Re decaying isotropic decay turbulence with and without a mean magnetic field are studied using LES. The effect of rotation is also studied. For the case without rotation, it is observed that the energy spectrum follows a k{sup -5/3} law. For the case with rotation, it is shown that two mechanisms, phase scrambling due to frame rotation and Joule dissipation, are competing, and two distinct regimes with respect to rotation rate are observed. There is a critical rotation rate at which the energy decays most in MHD turbulence. It is also shown that this MHD-LDKM model is applicable to wide variety of high/low magnetic Reynolds number applications.

Miki, Kenji; Menon, Suresh [Georgia Institute of Technology, School of Aerospace Engineering, Atlanta, Georgia 30332-0150 (United States)

2008-07-15T23:59:59.000Z

143

IFP Energies nouvelles International Conference Rencontres Scientifiques d'IFP Energies nouvelles  

E-Print Network [OSTI]

Large Eddy Simulations Applied to Non-Reactive Transient Diesel Sprays Anthony Robert, Lionel Martinez Euler ­ Euler pour la simulation aux grandes e´ chelles de sprays Diesel instationnaires non-re´ actifs (LES, Large Eddy Simulations) de sprays Diesel instationnaires dans une cellule haute pression et haute

Boyer, Edmond

144

AIAA JOURNAL Vol. 44, No. 4, April 2006  

E-Print Network [OSTI]

AIAA JOURNAL Vol. 44, No. 4, April 2006 Large-Eddy Simulation and Acoustic Analysis of a Swirled is successfully captured by reactive large-eddy simulation (LES) and analyzed by using a global acoustic energy criterion) is balanced by the acoustic fluxes at the boundaries when reaching the limit cycle. Additionally

145

PANS method of turbulence: simulation of high and low Reynolds number flows past a circular cylinder  

E-Print Network [OSTI]

cylinder are performed at ReD 140,000 and ReD 3900 using the PANS model. The high Reynolds number PANS results are compared with experimental results from Cantwell and Coles, Large Eddy Simulation results from Breuer, and Detached Eddy Simulation results...

Lakshmipathy, Sunil

2006-04-12T23:59:59.000Z

146

Enabling Advanced Modeling and Simulations for Fuel-Flexible Combustors  

SciTech Connect (OSTI)

The overall goal of the present project is to enable advanced modeling and simulations for the design and optimization of fuel-flexible turbine combustors. For this purpose we use a high fidelity, extensively-tested large-eddy simulation (LES) code and state-of-the-art models for premixed/partially-premixed turbulent combustion developed in the PI's group. In the frame of the present project, these techniques are applied, assessed, and improved for hydrogen enriched premixed and partially premixed gas-turbine combustion. Our innovative approaches include a completely consistent description of flame propagation; a coupled progress variable/level set method to resolve the detailed flame structure, and incorporation of thermal-diffusion (non-unity Lewis number) effects. In addition, we have developed a general flamelet-type transformation holding in the limits of both non-premixed and premixed burning. As a result, a model for partially premixed combustion has been derived. The coupled progress variable/level method and the general flamelet transformation were validated by LES of a lean-premixed low-swirl burner that has been studied experimentally at Lawrence Berkeley National Laboratory. The model is extended to include the non-unity Lewis number effects, which play a critical role in fuel-flexible combustor with high hydrogen content fuel. More specifically, a two-scalar model for lean hydrogen and hydrogen-enriched combustion is developed and validated against experimental and direct numerical simulation (DNS) data. Results are presented to emphasize the importance of non-unity Lewis number effects in the lean-premixed low-swirl burner of interest in this project. The proposed model gives improved results, which shows that the inclusion of the non-unity Lewis number effects is essential for accurate prediction of the lean-premixed low-swirl flame.

Pitsch, Heinz

2010-05-31T23:59:59.000Z

147

Simulations of Turbulent Flows with Strong Shocks and Density Variations: Final Report  

SciTech Connect (OSTI)

The target of this SciDAC Science Application was to develop a new capability based on high-order and high-resolution schemes to simulate shock-turbulence interactions and multi-material mixing in planar and spherical geometries, and to study Rayleigh-Taylor and Richtmyer-Meshkov turbulent mixing. These fundamental problems have direct application in high-speed engineering flows, such as inertial confinement fusion (ICF) capsule implosions and scramjet combustion, and also in the natural occurrence of supernovae explosions. Another component of this project was the development of subgrid-scale (SGS) models for large-eddy simulations of flows involving shock-turbulence interaction and multi-material mixing, that were to be validated with the DNS databases generated during the program. The numerical codes developed are designed for massively-parallel computer architectures, ensuring good scaling performance. Their algorithms were validated by means of a sequence of benchmark problems. The original multi-stage plan for this five-year project included the following milestones: 1) refinement of numerical algorithms for application to the shock-turbulence interaction problem and multi-material mixing (years 1-2); 2) direct numerical simulations (DNS) of canonical shock-turbulence interaction (years 2-3), targeted at improving our understanding of the physics behind the combined two phenomena and also at guiding the development of SGS models; 3) large-eddy simulations (LES) of shock-turbulence interaction (years 3-5), improving SGS models based on the DNS obtained in the previous phase; 4) DNS of planar/spherical RM multi-material mixing (years 3-5), also with the two-fold objective of gaining insight into the relevant physics of this instability and aiding in devising new modeling strategies for multi-material mixing; 5) LES of planar/spherical RM mixing (years 4-5), integrating the improved SGS and multi-material models developed in stages 3 and 5. This final report is outlined as follows. Section 2 shows an assessment of numerical algorithms that are best suited for the numerical simulation of compressible flows involving turbulence and shock phenomena. Sections 3 and 4 deal with the canonical shock-turbulence interaction problem, from the DNS and LES perspectives, respectively. Section 5 considers the shock-turbulence inter-action in spherical geometry, in particular, the interaction of a converging shock with isotropic turbulence as well as the problem of the blast wave. Section 6 describes the study of shock-accelerated mixing through planar and spherical Richtmyer-Meshkov mixing as well as the shock-curtain interaction problem In section 7 we acknowledge the different interactions between Stanford and other institutions participating in this SciDAC project, as well as several external collaborations made possible through it. Section 8 presents a list of publications and presentations that have been generated during the course of this SciDAC project. Finally, section 9 concludes this report with the list of personnel at Stanford University funded by this SciDAC project.

Sanjiva Lele

2012-10-01T23:59:59.000Z

148

Bluff Body Flow Simulation Using a Vortex Element Method  

SciTech Connect (OSTI)

Heavy ground vehicles, especially those involved in long-haul freight transportation, consume a significant part of our nation's energy supply. it is therefore of utmost importance to improve their efficiency, both to reduce emissions and to decrease reliance on imported oil. At highway speeds, more than half of the power consumed by a typical semi truck goes into overcoming aerodynamic drag, a fraction which increases with speed and crosswind. Thanks to better tools and increased awareness, recent years have seen substantial aerodynamic improvements by the truck industry, such as tractor/trailer height matching, radiator area reduction, and swept fairings. However, there remains substantial room for improvement as understanding of turbulent fluid dynamics grows. The group's research effort focused on vortex particle methods, a novel approach for computational fluid dynamics (CFD). Where common CFD methods solve or model the Navier-Stokes equations on a grid which stretches from the truck surface outward, vortex particle methods solve the vorticity equation on a Lagrangian basis of smooth particles and do not require a grid. They worked to advance the state of the art in vortex particle methods, improving their ability to handle the complicated, high Reynolds number flow around heavy vehicles. Specific challenges that they have addressed include finding strategies to accurate capture vorticity generation and resultant forces at the truck wall, handling the aerodynamics of spinning bodies such as tires, application of the method to the GTS model, computation time reduction through improved integration methods, a closest point transform for particle method in complex geometrics, and work on large eddy simulation (LES) turbulence modeling.

Anthony Leonard; Phillippe Chatelain; Michael Rebel

2004-09-30T23:59:59.000Z

149

The Local Variational Multiscale Method for Turbulence Simulation.  

SciTech Connect (OSTI)

Accurate and efficient turbulence simulation in complex geometries is a formidable chal-lenge. Traditional methods are often limited by low accuracy and/or restrictions to simplegeometries. We explore the merger of Discontinuous Galerkin (DG) spatial discretizationswith Variational Multi-Scale (VMS) modeling, termed Local VMS (LVMS), to overcomethese limitations. DG spatial discretizations support arbitrarily high-order accuracy on un-structured grids amenable for complex geometries. Furthermore, high-order, hierarchicalrepresentation within DG provides a natural framework fora prioriscale separation crucialfor VMS implementation. We show that the combined benefits of DG and VMS within theLVMS method leads to promising new approach to LES for use in complex geometries.The efficacy of LVMS for turbulence simulation is assessed by application to fully-developed turbulent channelflow. First, a detailed spatial resolution study is undertakento record the effects of the DG discretization on turbulence statistics. Here, the localhp[?]refinement capabilites of DG are exploited to obtain reliable low-order statistics effi-ciently. Likewise, resolution guidelines for simulating wall-bounded turbulence using DGare established. We also explore the influence of enforcing Dirichlet boundary conditionsindirectly through numericalfluxes in DG which allows the solution to jump (slip) at thechannel walls. These jumps are effective in simulating the influence of the wall commen-surate with the local resolution and this feature of DG is effective in mitigating near-wallresolution requirements. In particular, we show that by locally modifying the numericalviscousflux used at the wall, we are able to regulate the near-wall slip through a penaltythat leads to improved shear-stress predictions. This work, demonstrates the potential ofthe numerical viscousflux to act as a numerically consistent wall-model and this successwarrents future research.As in any high-order numerical method some mechanism is required to control aliasingeffects due to nonlinear interactions and to ensure nonlinear stability of the method. Inthis context, we evaluate the merits of two approaches to de-aliasing -- spectralfilteringand polynomial dealiasing. While both approaches are successful, polynomial-dealiasingis found to be better suited for use in large-eddy simulation. Finally, results using LVMSare reported and show good agreement with reference direct numerical simulation therebydemonstrating the effectiveness of LVMS for wall-bounded turbulence. This success pavesthe way for future applications of LVMS to more complex turbulentflows.3

Collis, Samuel Scott; Ramakrishnan, Srinivas

2005-05-01T23:59:59.000Z

150

AIAA JOURNAL Vol. 43, No. 3, March 2005  

E-Print Network [OSTI]

, Center for Turbulence Research. Member AIAA. combustor the use of a large-eddy simulation (LES) flow- component phenomena, such as compressor/combustor instability and combustor/turbine hot-streak migration of a RANS flow solver for the compressor section, an LES flow solver for the combustor, and again a RANS

Pitsch, Heinz

151

THE BURGERS PROGRAM FOR FLUID DYNAMICS THE MINTA MARTIN FUND  

E-Print Network [OSTI]

In an effort to make large eddy simulation of scramjet combustors of engineering interest computationally more

Bernstein, Joseph B.

152

Les Cahiers du GERAD  

E-Print Network [OSTI]

research papers published in the series Les Cahiers du GERAD. ... The converse result, that is the existence of a decomposition as a path and ..... a white paper algorithm thus showing that even tight complexities must be interpreted with care. ... As final remarks, we think the linear programming proof of the decomposition ...

2014-10-08T23:59:59.000Z

153

GEOPHYSICAL RESEARCH LETTERS, VOL. 28, NO. 13, PAGES 2637-2640, JULY 1, 2001 Ocean release of fossil fuel CO2: A case study  

E-Print Network [OSTI]

a 220 MW gas power plant, it is found that the volume of the near-source water with a pH-reduction 0 are 200, 400 and 800 Gg-CO2, corresponding to CO2 emissions from conventional 55-220 MW gas power plants], a local 3-dimensional large eddy simulation (LES) code (

Drange, Helge

154

A simple analytical model to study and control azimuthal instabilities in annular combustion chambers  

E-Print Network [OSTI]

A simple analytical model to study and control azimuthal instabilities in annular combustion analytical method to compute the azimuthal modes appearing in annular combustion chambers and help analyzing exper- imental, acoustic and LES (Large Eddy Simulation) data obtained in these combustion chambers

Paris-Sud XI, Université de

155

CTR Summer Program 2012 Presentation of Research Plans  

E-Print Network [OSTI]

Large eddy simulation of self-noise from a wind turbine airfoil at high angle of attack 10:35am Further appropriate for turbine blades and unmanned aero-vehicles Hickel Stefan, Touber Emile Wall modeling for LES-Mach turbine blade 1:30pm Further discussion 1:35pm RANS Introduction by Kassinos Stavros Kassinos Stavros

Prinz, Friedrich B.

156

Center for Turbulence Research Annual Research Briefs 2003  

E-Print Network [OSTI]

multiphase flows in realistic gas turbine combustors By Frank Ham, Sourabh Apte, Gianluca Iaccarino, Xiaohua reacting flows in aircraft gas turbine combustor con- figurations using hybrid unstructured grids the combustion products that drive the downstream turbine. The Large Eddy Simulation (LES) ap- proach is used

Apte, Sourabh V.

157

Les calendriers Alain ARRAULT  

E-Print Network [OSTI]

'histoire, qui par chance dans le cas chinois ont été substituées par des tombes, fosses, grotte murée... Là où d calendriers ou fragments de calendriers auxquels nous nous référons ont été retrouvés dans le nord-ouest de la Chine dans les actuelles provinces du Xinjiang (Turfan) et du Gansu (Dunhuang, Juyan), sur la cote Est

Paris-Sud XI, Université de

158

A filtered tabulated chemistry model for LES of premixed combustion  

E-Print Network [OSTI]

A filtered tabulated chemistry model for LES of premixed combustion B. Fiorinaa , R. Vicquelina to turbulent combustion regimes by including subgrid scale wrinkling effects in the flame front propagation Simulation, Turbulent premixed combustion, Tabulated chemistry 1. Introduction Flame ignition and extinction

Paris-Sud XI, Université de

159

Objectif : Les hypertensions artrielles non contrles conduisent les cliniciens s'interroger sur les niveaux  

E-Print Network [OSTI]

Résumé Objectif : Les hypertensions artérielles non contrôlées conduisent les cliniciens à s hight blood pressure leads clinicians to wonder about adherence degree amongst hypertensive patients). Semi-structured interviews were conducted with 68 hypertensive patients (39 women and 29 men, between

Paris-Sud XI, Université de

160

LES TRAITS PERSANS SUR LES SCIENCES INDIENNES : MDECINE, ZOOLOGIE, ALCHIMIE  

E-Print Network [OSTI]

LES TRAIT�S PERSANS SUR LES SCIENCES INDIENNES : M�DECINE, ZOOLOGIE, ALCHIMIE Fabrizio Speziale persan n'a encore jamais fait l'objet d'une étude exhaustive. une analyse plus approfondie des sources montre qu'il serait en effet injustifié de définir le corpus de la littérature médicale indo-persane

Paris-Sud XI, Université de

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


161

On the simulation of shock-driven material mixing in high-Re flows (u)  

SciTech Connect (OSTI)

Implicit large eddy simulation proposes to effectively rely on the use of subgrid modeling and filtering provided implicitly by physics capturing numerics. Extensive work has demonstrated that predictive simulations of turbulent velocity fields are possible using a class of high resolution, non-oscillatory finite-volume (NFV) numerical algorithms. Truncation terms associated with NFV methods implicitly provide subgrid models capable of emulating the physical dynamics of the unresolved turbulent velocity fluctuations by themselves. The extension of the approach to the substantially more difficult problem of under-resolved material mixing by an under-resolved velocity field has not yet been investigated numerically, nor are there any theories as to when the methodology may be expected to be successful. Progress in addressing these issues in studies of shock-driven scalar mixing driven by Ritchmyer-Meshkov instabilities will be reported in the context of ongoing simulations of shock-tube laboratory experiments.

Grinstein, Fernando F [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

162

Educational systems need appropriate animations and simulations Ruddy LELOUCHE  

E-Print Network [OSTI]

-mail: LELOUCHE@IFT.ULAVAL.CA Abstract Animations and simulations are often presented as tools for learning in a simulation-based system to help practising and learning algorithmics. Finally, the paper proposes a guideline, learning activity, knowledge type. Résumé Les animations et les simulations sont souvent présentées comme

Paris-Sud XI, Université de

163

LES ECOTECHNOLOGIES POUR LES AGROSYSTEMES ECO-TECHNOLOGIES, ECO-CONCEPTION,  

E-Print Network [OSTI]

LES ECOTECHNOLOGIES POUR LES AGROSYSTEMES ECO-TECHNOLOGIES, ECO-CONCEPTION, EVALUATION INTEGREE plus acceptable, que les technologies qu'elles remplacent. Les problèmes méthodologiques qui se posent the resources and authorize the recycling of whole or part of their waste in a more acceptable way than

Paris-Sud XI, Université de

164

Scenariser les possibles energetiques. Les gaz de schiste dans la matrice des  

E-Print Network [OSTI]

'utilisation de la fracturation hydraulique (fracking ou hydraulic fracturing dans les mondes anglophones) ont

Boyer, Edmond

165

PLE QUALITCERTIFI ISO 9001 LES MTIERS  

E-Print Network [OSTI]

PÃ?LE QUALITÃ?CERTIFIÃ? ISO 9001 LES MÃ?TIERS RESPONSABLE QUALITÃ? RESPONSABLE SÃ?CURITÃ? DIRECTEUR OU

Jeanjean, Louis

166

Examining A Hypersonic Turbulent Boundary Layer at Low Reynolds Number  

E-Print Network [OSTI]

z spanwise direction, m Greek Symbols boundary layer thickness, m displacement thickness, m ratio of speci c heats hotwire recovery ratio dynamic viscosity, Pa s density, kg=m3 hotwire overheat ratio, Twire=Tt momentum thickness, m... direct numerical simulation LDV laser doppler velocimetry LES large eddy simulation MTV molecular tagging velocimetry OHR overheat ratio (see ) PIV particle image velocimetry PLIF planar laser induced uorescence RANS Reynolds averaged Navier...

Semper, Michael Thomas

2013-05-15T23:59:59.000Z

167

Les Mmoires d'Uranie la merveilleuse histoire de l'Astronomie Daniel BENEST  

E-Print Network [OSTI]

observations Le noble astronome (Tycho Brahe) Les nouveaux yeux (Galilée) 6. Les arpenteurs du cosmos Les

Michel, Patrick

168

Janvier 2011 Les paradoxes de la quinoa  

E-Print Network [OSTI]

, les agriculteurs se sont mis à cultiver des zones de plaine où les risques de gelée nocturne sont familles de l'Altiplano andin un exode définitif vers les villes ou l'étranger, il altère la durabilité du'exposition par rapport au soleil3 . Quinoa versus élevage Accaparant des plaines jusqu'alors dédiées au pâtu

169

Ignition sequence of an annular multi-injector combustor  

E-Print Network [OSTI]

Ignition is a critical process in combustion systems. In aeronautical combustors, altitude relight capacities are required in case of accidental extinction of the chamber. A simultaneous study of light-round ignition in an annular multi-injector combustor has been performed on the experimental and numerical sides. This effort allows a unique comparison to assess the reliability of Large-Eddy Simulation (LES) in such a configuration. Results are presented in fluid dynamics videos.

Philip, Maxime; Vicquelin, Ronan; Schmitt, Thomas; Durox, Daniel; Bourgoin, Jean-François; Candel, Sébastien

2013-01-01T23:59:59.000Z

170

Les communauts marchandes de l'Europe du Nord dans les ports bretons au XVIIIe  

E-Print Network [OSTI]

Les communautés marchandes de l'Europe du Nord dans les ports bretons au XVIIIe siècle Pierrick Peter Voss, «Les communautés marchandes étrangères dans l'espace urbain bordelais (62075)», dans J ou moins grande fréquentation par les communautés marchandes des différents pays européens. Cet

Paris-Sud XI, Université de

171

Les business models dans la distribution : reprer les chemins de la performance 1  

E-Print Network [OSTI]

1 Les business models dans la distribution : repérer les chemins de la performance 1 Pierre Volle peuvent être adressées à pierre.volle@dauphine.fr 2 Les business models dans la distribution : repérer les business model (BM) reste largement à préciser. L'objectif de cet article est donc de mettre en évidence

Paris-Sud XI, Université de

172

COMMENT LES NANOTUBES DE CARBONE INTERAGISSENT AVEC LES MACROPHAGES : CE QUE NOUS DIT LA MICROFLUORESCENCE X  

E-Print Network [OSTI]

COMMENT LES NANOTUBES DE CARBONE INTERAGISSENT AVEC LES MACROPHAGES : CE QUE NOUS DIT LA. Boczkowski (INSERM). Réf. : Nano Lett. 8 (9), 2659-2663 (2008). Les nanotubes de carbone présentent des utilisée jusqu'alors pour étudier des nanotubes de carbone. Nous avons choisi d'étudier différentes sortes

Paris-Sud 11, Université de

173

Direct numerical simulations of type Ia supernovae flames II: The rayleigh-taylor instability  

E-Print Network [OSTI]

Weaver, T. A. 1994, in Supernovae, Les Houches, Session LIV,Simulations of Type Ia Supernovae Flames II: The Rayleigh-Subject headings: supernovae: general — white dwarfs —

Bell, J.B.; Day, M.S.; Rendleman, C.A.; Woosley, S.E.; Zingale, M.

2004-01-01T23:59:59.000Z

174

associes pour les: Topics by E-print Network  

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

mode de gouvernance associatif peut se Boyer, Edmond 2 Les risques sismiques Mrida (Venezuela). Pour une association des communauts la prvention de catastrophe dans les Physics...

175

A Method To Accelerate LES Explicit Solvers Using Local Time-Stepping  

E-Print Network [OSTI]

designing a gas turbine combustor are to control flame ignition and extinction as well as combustion (LES) explicit solver and successfully tested for an acoustic wave propagation. It has been finally simulations are now part of the design process of aeronautical turbine combustors. Main challenges when

Paris-Sud XI, Université de

176

RELATIONS ENTRE LES PROPRITS OPTIQUES ET DILECTRIQUES POLARISATION IONIQUE DANS LES SOLIDES (1)  

E-Print Network [OSTI]

. 2014 Dans la première partie de ce travail, on a reconnu pour les halogé- nures alcalins une variation

Boyer, Edmond

177

LES COULISSES DU CYBERART Anne SAUVAGEOT  

E-Print Network [OSTI]

« Les coulisses du Cyberart », In Pessin, A. & Majastre, O. (sld), Vers une sociologie des oeuvres, L'Harmattan-Olivier Majastre et Alain Pessin L'Harmattan, Logiques sociales Le colloque " vers une sociologie des oeuvres " s

Paris-Sud XI, Université de

178

25-26 octobre Les dcideu  

E-Print Network [OSTI]

'épandeurs, plifié nommé (2007-2011) de machines e les impact s et les différe ACV3E, l'ut t de connaît u champ enviro ycle Assess derstand the e user can c h of them for ibilities rega design supp " attendu pa@irstea.fr 34196 Montp soin d'outils d contraintes q ublics et priv éthode Bilan impacts en

Paris-Sud XI, Université de

179

Direct numerical simulation of turbulent reacting flows  

SciTech Connect (OSTI)

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.

Chen, J.H. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

180

LES BIG DATA ET LA RELATION CLIENT Quand les traces numriques organisent l'change marchand  

E-Print Network [OSTI]

LES BIG DATA ET LA RELATION CLIENT Quand les traces numériques organisent l'échange marchand Auteur traces numériques organisent l'échange marchand Résumé : Avec le mouvement de digitalisation du commerce marchands font des comportements des consommateurs. Ces traces numériques doivent donc permettre aux

Paris-Sud XI, Université de

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181

Les problmes dans les programmes depuis la contre rforme en France Sylvie COPPE  

E-Print Network [OSTI]

, researching conjectures, searching for information, constructing models, debating with peers, and forming liens on peut faire avec la démarche d'investigation, plus récemment introduite. Notons que le rapport exercices de réinvestissement proches du savoir enseigné, mettre les mathématiques en lien avec les autres

Paris-Sud XI, Université de

182

LES GRAVURES RUPESTRES DE JORDANIE DU SUD ET ENQUTE SUR LES PRATIQUES DE CHASSE ACTUELLES  

E-Print Network [OSTI]

portrait du chasseur: ses qualités mora- les et physiques. Mots-clés: Jordanie, Arabie, Wadi Ramm, al qualities. Key words: Jordan, Arabia, Wadi Ramm, Al-Hwaïtat, hunting, hunters, inscriptions, north Arabic le Wadi Ramm, sur une zone de 50 km2 environ aux alentours du village de Ramm (fig. 1). Les

Paris-Sud XI, Université de

183

LES Simulations of Turbulent Combustion in a Type Ia Supernovae  

E-Print Network [OSTI]

to be thermonuclear explosions of white dwarfs. SNIa are important sources of energy and chemical elements deposited of the burning are all determined by the speed of thermonuclear burning [27]. The problem of turbulent combustion. The mechanism and the speed of thermonuclear burning in SNIa remain an unsolved theoretical problem. A recent

New York at Stoney Brook, State University of

184

Using simulation of accidents to assess resilience capacities of organizations  

E-Print Network [OSTI]

and analysis of such simulations (toxic leak in a refinery, fire in a road tunnel, terrorist attack Symposium on Resilience Engineering, Juan-les-Pins : France (2006)" #12;situation. Another limitation lies

Boyer, Edmond

185

Large-Eddy Observation of Post-Cold-Frontal Continental Stratocumulus  

E-Print Network [OSTI]

More studies on the dynamics of marine stratus and stratocumulus clouds have been performed than comparable studies on continental stratocumulus. Therefore, to increase the number of observations of continental stratocumulus ...

Mechem, David B.; Kogan, Yefim L.; Schultz, David M.

2010-10-01T23:59:59.000Z

186

The role of large eddy fluctuations in the Madison Dynamo Experiment  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe MolecularPlaceTheofThebattery materialsMHDLARGE

187

Les dispositifs de visibilisation sur les scnes marchandes Le cas des chanes de tlvision franaises  

E-Print Network [OSTI]

1 Les dispositifs de visibilisation sur les scènes marchandes Le cas des chaînes de télévision marchandes. Il montre que la présence d'acteurs collectifs sur ces scènes ne va pas de soi. Celle-ci est visibilisation sur les scènes marchandes. Le cas des chaînes de télévision françaises, Réseaux (116), p. 257

Paris-Sud XI, Université de

188

Paysage et Landschaft : incomprhensions et malentendus entre les gographes allemands et franais dans les annes Trente.  

E-Print Network [OSTI]

géographie sont organisés dans le cadre de l'Union géographique internationale (UGI), organisation encore pérenne et qui regroupe les géographes à l'échelle mondiale2 . L'UGI est créée à Bruxelles le 27 juillet. A la base de l'UGI se trouvent les comités nationaux représentant les divers Etats adhérents, qui se

Paris-Sud XI, Université de

189

soleil, parce que les pinceaux lumineux qui forment les images sont moins dlis et les foyers moins prcis.  

E-Print Network [OSTI]

AU PHÉNOMÈNE DE PELTIER; PAR M. BOUTY. 1. On sait que, quand on décompose par la pile un sel dissous les phénomènes observés soit à l'action chimique principale, soit à une cause analogue à celle qui part à la pro- duction du courant que celle-là seule se distrib

Boyer, Edmond

190

ENERGIA DE L'OCE`A Energia de les ones  

E-Print Network [OSTI]

. #12;ENERGIA T`ERMICA OCE`ANICA El mar acumula energia solar a gran escala (1/4 de l'energia que arrivaENERGIA DE L'OCE`A · Energia de les ones · Energia de les marees · Energia t`ermica oce`anic · Energia de les corrents oce`aniques #12;ENERGIA DE LES ONES En algunes zones 40-70 kW/m Aig¨ues profundes

Batiste, Oriol

191

La chane de l'esclavage dans les Lettres persanes  

E-Print Network [OSTI]

La chaîne de l'esclavage dans les Lettres persanes Pour ma mère Avant même d'être traité comme des Lettres persanes (1721). Les rapports de domination entre les différents protagonistes, mais aussi est très rare dans les Lettres persanes (on trouve en revanche plus fréquemment servitude, associé à

Paris-Sud XI, Université de

192

Les oasis du Tafilalet Dans les oasis du Tafilalet, province situe l'est du Maroc, il faut aller  

E-Print Network [OSTI]

Les oasis du Tafilalet Dans les oasis du Tafilalet, province située à l'est du Maroc, il faut aller T E R R A N � E Maroc #12;

193

INTERNET EN RECEPTIONS, LES PROVINCES DE L'ART  

E-Print Network [OSTI]

réception(s), L'Harmattan, Paris, pp. 33-48. #12;2 LES NON-PUBLICS - Les arts en réception Tome I - Sous la direction de Pascale Ancel et Alain Pessin L'Harmattan, Logiques sociales Les statistiques de la sociologie

Paris-Sud XI, Université de

194

LES DETERMINANTS DES COMPETENCES DE LA FONCTION GESTION-FINANCE  

E-Print Network [OSTI]

LES DETERMINANTS DES COMPETENCES DE LA FONCTION GESTION-FINANCE Pierre-Laurent, Bescos Professeur'enjeu est de donner alors aux étudiants et professionnels de la fonction gestion-finance une formation de, les aptitudes et les grades au sein de la fonction gestion-finance. Mots clés : compétences, enquête

Paris-Sud XI, Université de

195

Approche Mthodologique de la modlisation du transport des HAP dans les sols et les eaux  

E-Print Network [OSTI]

parc technologique de Lyon, 12 allée Joliot Curie, Bât. B2, 69791 Saint Priest Cedex. (6) ANTEA, 3 la Recherche sur les Sites et Sols Pollués : Bilans et Perspectives, Paris : France (2002)" #12

Paris-Sud XI, Université de

196

Les risques sismiques Mrida (Venezuela). Pour une association des communauts la prvention de catastrophe dans les  

E-Print Network [OSTI]

Les risques sismiques à Mérida (Venezuela). Pour une association des communautés à la prévention de louest) et de Trujillo (à lest) sont les trois états andins du Venezuela. Ils occupent le tracé de la cordillère andine du Venezuela qui se dégrade au nord-est dans létat de Lara en une transition montagneuse

Paris-Sud XI, Université de

197

SciTech Connect: Comparison of the Dynamic Wake Meandering Model...  

Office of Scientific and Technical Information (OSTI)

Technologies Office Country of Publication: United States Language: English Subject: 17 WIND ENERGY WIND PLANT AERODYNAMICS; DYNAMIC WAKE MEANDERING; LARGE-EDDY SIMULATION; Wind...

198

ENQUETE SUR LES CONSEQUENCES DE L'UTILISATION D'UN OUTIL DE DIAGNOSTIC "DEVELOPPEMENT  

E-Print Network [OSTI]

» DANS LES PME PMI". Alain van Cuyck Introduction : Le Développement durable comme dispositif symbolique durable. 2. Le cas spécifique des PME/PMI Si les grandes entreprises et les multinationales se sont déjà dans la structure et les représentations des PME / PMI en France, les entreprises s'engageant dans

Boyer, Edmond

199

Le jugement des candidats par les entreprises lors des recrutements  

E-Print Network [OSTI]

l'explication du chômage par les modèles de recherche d'emploi ou job search. Or, comme le concèdent l'employer search. Cet article prolonge cette intuition en se donnant pour objectif de mettre en'hypothèse travaillée est celle d'un lien entre la façon dont s'opèrent les mises en relation sur le marché du travail

Paris-Sud XI, Université de

200

L'Amrique latine ou les Amriques latines Georges Couffignal  

E-Print Network [OSTI]

, le Suriname, la Guyane, la Jamaïque, la Guadeloupe, la Martinique et les mini �tats de la Caraïbe. Au

Paris-Sud XI, Université de

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


201

SUR LES STROLS DU POLLEN Marie-France HGEL  

E-Print Network [OSTI]

algues rouges et, tout récemment, par JONHSON, BENNET et H!!2Mnrrrr (1963) dans les plantes supérieures

Paris-Sud XI, Université de

202

applications dans les: Topics by E-print Network  

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

Information Sciences Websites Summary: 'utilisation de la fracturation hydraulique (fracking ou hydraulic fracturing dans les mondes anglophones) ont de provoquer et...

203

atomique dans les: Topics by E-print Network  

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

Information Sciences Websites Summary: 'utilisation de la fracturation hydraulique (fracking ou hydraulic fracturing dans les mondes anglophones) ont de provoquer et...

204

actinides dans les: Topics by E-print Network  

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

Information Sciences Websites Summary: 'utilisation de la fracturation hydraulique (fracking ou hydraulic fracturing dans les mondes anglophones) ont de provoquer et...

205

argentine dans les: Topics by E-print Network  

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

Information Sciences Websites Summary: 'utilisation de la fracturation hydraulique (fracking ou hydraulic fracturing dans les mondes anglophones) ont de provoquer et...

206

atmospheriques dans les: Topics by E-print Network  

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

Information Sciences Websites Summary: 'utilisation de la fracturation hydraulique (fracking ou hydraulic fracturing dans les mondes anglophones) ont de provoquer et...

207

Transformations sociales chez les Cherokees, 1794-1827.  

E-Print Network [OSTI]

??Bouleversements démographiques, pressions assimilatrices, défaites militaires et rivalités territoriales : ce mémoire étudie les transformations que connaît la société Cherokee sous l’impulsion de ces forces… (more)

Laramée, François Dominic

2013-01-01T23:59:59.000Z

208

Les fonctions holomorphes et méromorphes dans le cercle-unité  

E-Print Network [OSTI]

systématique la même théorie, à partir de la fonction modulaire. On peut, à ce point de vue, condenser les propositions de MM. Pi- card, Landau, Schottky [26, ...

A. Bloch

2011-06-28T23:59:59.000Z

209

LES EXCITATIONS 1 TROU -1 PARTICULE DANS LES NOYAUX 58Ni et 56Co  

E-Print Network [OSTI]

in 58Ni and 56Co using shell model technics and SDI potential. Nuclear levels and reduced transition for levels at low energies in 58Ni and 56Co, 1p-1h excitations do not however improve greatly earlier results couche f7/2) et qu'en outre les energies individuelles sont insuffisamment connues. D'autres travaux [3

Boyer, Edmond

210

Martine Azam, "Les non-publics, Les arts en rception", Paris, 2004, L'harmattan, Collection Logiques sociales, tome 2, p 67 83  

E-Print Network [OSTI]

Martine Azam, "Les non-publics, Les arts en réception", Paris, 2004, L'harmattan, Collection) (ANCEL Pascal) (2004) p." #12;Martine Azam, "Les non-publics, Les arts en réception", Paris, 2004, L'harmattan

Paris-Sud XI, Université de

211

Ecotoxicit des terres rares Les terres rares sont un groupe de mtaux qui  

E-Print Network [OSTI]

'automobile pour dépolluer les gaz d'échappement constituent le principal débouché des terres rares (tout véhicules hybrides, les turbines d'éoliennes ainsi que dans le nucléaire et l'armement. Les terres rares ont

Wehrli, Bernhard

212

LES PIRATES DU CYBERART, INCONFORT TECHNIQUE ET CONTAMINATION  

E-Print Network [OSTI]

), Les oeuvres noires de l'art et de la Littérature , L'Harmattan, Paris, pp. 31-50. #12;2 LES OEUVRES-Caroline Vanbremeersch L'Harmattan, Logiques sociales - Sociologie de la connaissance L'art du noir a traversé le siècle

Paris-Sud XI, Université de

213

ISO 9001 : LES ENJEUX DU RECOURS A UN REFERENTIEL  

E-Print Network [OSTI]

ISO 9001 : LES ENJEUX DU RECOURS A UN REFERENTIEL QUALITE SUPPLEMENTAIRE POUR LA PROFESSION de déterminer les enjeux principaux de l'obtention de la norme ISO 9001 pour un cabinet d of obtaining the standard ISO 9001 for a certified public accountant firm. Initially, we will reconsider

Boyer, Edmond

214

LES OUTILS DE CONTROLE DE GESTION DANS LE CONTEXTE DES  

E-Print Network [OSTI]

LES OUTILS DE CONTROLE DE GESTION DANS LE CONTEXTE DES PME : CAS DES PMI AU LIBAN Numéro d différents outils de contrôle de gestion utilisés dans les PMI libanaises et plus précisément, d gestion ­ outil de contrôle ­ calcul de coût Key words: SME - management control - cost control

Boyer, Edmond

215

Recherche de concepts fdrateurs dans les bases de donnes gographiques  

E-Print Network [OSTI]

the search for a set of generic "federating concepts" for describing the geographical world in a more general par- tie les processus qui créeront les liens entre objets en se fondant sur leur géométrie, il

Joseph Fourier Grenoble-I, Université

216

La Radioactivit, les Radiations, l'Ionisation JOURNAL DE PHYSIQUE  

E-Print Network [OSTI]

)MENTALE M�MOIRES ORIGINAUX Tables des constantes radioactives Par Léon KOLOWRAT Des tableaux résumant les'hui; mesurée par l'in~~er·e de a,, elle s'ob- tient d'ailleurs simplement en multipliant T par ~,~ ~`~7. Les

Boyer, Edmond

217

Les 10 mois du rectorat Weber Bilan et perspectives  

E-Print Network [OSTI]

Les 10 mois du rectorat Weber Bilan et perspectives Septembre 2006 - juillet 2007 #12;Sommaire Sauf les femmes. Composition du rectorat Weber 2 Préambule 3 10 mois de coopération et d'ouverture 4 10 transformations structurelles 10 Pour conclure 11 Bilan et perspectives du rectorat Weber Septembre 2006 - juillet

Halazonetis, Thanos

218

LES Applied to Low-Temperature, Diesel and Hydrogen Engine Combustion...  

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

LES Applied to Low-Temperature, Diesel and Hydrogen Engine Combustion Research LES Applied to Low-Temperature, Diesel and Hydrogen Engine Combustion Research Presentation from the...

219

Les marchands orientaux et les langues occidentales au XVIIe sicle : l'exemple des Choffelins de Marseille  

E-Print Network [OSTI]

1 Les marchands orientaux et les langues occidentales au XVIIe siècle : l'exemple des « Choffelins » de Marseille La question des marchands et des langues à l'époque moderne est loin d'être un domaine la question des marchands et des langues dans le commerce de moyenne et longue distances. Le but de

Paris-Sud XI, Université de

220

Rendre publique l'valuation des SHS : les controverses sur les listes de revues de l'AERES*  

E-Print Network [OSTI]

Rendre publique l'évaluation des SHS : les controverses sur les listes de revues de l'AERES* David aux sciences humaines et sociales : la liste des revues scientifiques publiée en juillet 2008 par l'AERES French Research Assessment institution (AERES). It highlights the filiations of that tool with previous

Paris-Sud XI, Université de

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


221

Les Mesures Techniques de Protection... autrement dit les DRM. Teddy Furon, Thomson Security Lab  

E-Print Network [OSTI]

littéraire et artistique incluse dans le Code de la Propriété Intellectuelle, CPI. Très schématiquement, deux lois sont en fait élaborées au niveau international pour homogénéiser le code de la propriété seulement condamnés parce qu'ils spolient les intérêts des ayants- droit, mais aussi parce qu'ils ont

Paris-Sud XI, Université de

222

Learning environment simulator: a tool for local decision makers and first responders  

SciTech Connect (OSTI)

The National Infrastructure Simulation and Analysis Center (NISAC) has developed a prototype learning environment simulator (LES) based on the Critical Infrastructure Protection Decision Support System (CIPDSS) infrastructure and scenario models. The LES is designed to engage decision makers at the grass-roots level (local/city/state) to deepen their understanding of an evolving crisis, enhance their intuition and allow them to test their own strategies for events before they occur. An initial version is being developed, centered on a pandemic influenza outbreak and has been successfully tested with a group of hospital administrators and first responders. LES is not a predictive tool but rather a simulated environment allowing the user to experience the complexities of a crisis before it happens. Users can contrast various approaches to the crisis, competing with alternative strategies of their own or other participants. LES is designed to assist decision makers in making informed choices by functionally representing relevant scenarios before they occur, including impacts to critical infrastructures with their interdependencies, and estimating human health & safety and economic impacts. In this paper a brief overview of the underlying models are given followed by a description of the LES, its interface and usage and an overview of the experience testing LES with a group of hospital administrators and first responders. The paper concludes with a brief discussion of the work remaining to make LES operational.

Leclaire, Rene J [Los Alamos National Laboratory; Hirsch, Gary B [CLE, INCORPORATED

2009-01-01T23:59:59.000Z

223

Un modle et une algbre pour les systmes de gestion d'ontologies  

E-Print Network [OSTI]

Un modèle et une algèbre pour les systèmes de gestion d'ontologies Gilles Falquet Claire, guyot@cui.unige.ch Résumé. Nous présentons ici une approche pour la gestion de bases d'ontolo- gies systèmes de gestion qui permettent non seulement de les stocker mais également de les aligner et de les

Genève, Université de

224

Simulation du transfert de polluants dans les sols et les eaux souterraines : recommandations pour le choix du modle  

E-Print Network [OSTI]

'obtention de résultats exploitables pour parvenir à une gestion raisonnée et proportionnée d'une pollution. Or 1.5 2 2.5 3 3.5 ConcentrationenPCE(µg/l) S-2 S-3 PLPR-3S-5 BV BIOCHLOR NAS ANTEA ENVIROS INERIS

Paris-Sud XI, Université de

225

5 Le coton-poudre rend positifs presque tous les corps (le sulfure de cuivre est la seule exception trouve par M. Hagenbach) avec lesquels on le frotte. Ce  

E-Print Network [OSTI]

rentrant les uns dans les autres, comme ces pilcs de verres de Bohême dont on se sert dans les laboratoires

Paris-Sud XI, Université de

226

Sourabh V. Apte 204 Rogers Hall (541) 737 7335  

E-Print Network [OSTI]

-16, 2008. 3. Moin, P., and Apte S.V., "Large-eddy Simulation of Realistic Gas Turbine Combustors," AIAA and Validation Needs for Gas Turbine Combustors). 4. Apte, S.V., and Yang, V., "A Large-eddy Simulation Study Dynamics of Homogeneous Solid Propellant in a Rocket Motor," Combustion and Flame, Vol. 131, pp. 110

Apte, Sourabh V.

227

To link to this article: DOI:10.1016/j.pecs.2012.04.004 URL : http://dx.doi.org/10.1016/j.pecs.2012.04.004  

E-Print Network [OSTI]

flames in gas turbine combustion chambers. (2012) Progress in Energy and Combustion Science, vol. 38 (n.pecs.2012.04.004 #12;Large Eddy Simulations of gaseous flames in gas turbine combustion chambers L Keywords: Large Eddy Simulations Complex geometry Swirled flows Gaseous combustion Turbulent combustion Gas

Paris-Sud XI, Université de

228

SeyedHosseinHezaveh 410-662-2787 | shezaveh@princeton.edu  

E-Print Network [OSTI]

research area: Large eddy simulations of Vertical Axis Wind Turbines M.Sc. | 2008-2011 | Sharif University of technology · Major: Civil and Environmental Engineering · Minor: Hydraulic Structures · Thesis: Numerical Research Interests Hybrid Wind Turbine Design Computational Mechanics Green Energy Large Eddy Simulations

Bou-Zeid, Elie

229

Center for Turbulence Research Annual Research Briefs 2001  

E-Print Network [OSTI]

Center for Turbulence Research Annual Research Briefs 2001 3 Large-eddy simulation of gas turbine, and solver capable of performing large-eddy simulation in geometries as complex as the combustor of a gas-turbine' grids encountered in complex geometries such as the Pratt & Whitney combustor. · Turbulent validations

Apte, Sourabh V.

230

Ngociation de spectre dans les rseaux de radio cognitive  

E-Print Network [OSTI]

1 Négociation de spectre dans les réseaux de radio cognitive Rapport de recherche - Juin 2013 ................................................................................................................................... 4 I. Chapitre I : Réseaux de radio cognitive)............................................................................................... 6 I.3 Radio cognitive

Paris-Sud XI, Université de

231

Mathrice, une communaut, un rseau, une quipe pour les mathmatiques  

E-Print Network [OSTI]

'infrastructure est entamée : des mécanismes basés sur des API REST sont déployés en périphérie sur les serveurs

Menichi, Luc

232

Les domestiques sngalaises au Maroc: Un travail servile entre tradition et modernit  

E-Print Network [OSTI]

1 Les domestiques sénégalaises au Maroc: Un travail servile entre tradition et modernité Nazarena'hui le Maroc et le Sénégal et à poser les bases d'une quasi libre circulation entre les deux pays. Les femmes de ménage sénégalaises vers le Maroc. Aujourd'hui, même s'ils ne sont plus les seuls à déterminer

Paris-Sud XI, Université de

233

dpasser les frontires d'AlAn Turing  

E-Print Network [OSTI]

première pierre de notre monde numérique. Dix ans plus tard, le même Alan Turing par- ticipe d puisse paraître, les contributions d'Alan Turing ne s'arrêtent pas là. Il a participé, pen- dantla, mathématiques, informatique, biologie : Alan Turing est le symbole éclatant de l'art de faire dialoguer les

van Tiggelen, Bart

234

Waste-To-Energy Feasibility Analysis: A Simulation Model  

E-Print Network [OSTI]

Waste- To- Energy Feasibility Analysis: A Simulation Model Viet- An Duong College of Engineering://www.funginstitute.berkeley.edu/sites/default/ les/WasteToEnergy.pdf May 1, 2014 130 Blum Hall #5580 Berkeley, CA 94720-5580 | (510) 664-4337 | www of the main battles of our generation. Using waste to produce electricity can be a major source of energy

Sekhon, Jasjeet S.

235

SimStudio : une Infrastructure pour la Modlisation, la Simulation et  

E-Print Network [OSTI]

transformation features (code generation, among others) in order to smooth the modeling and simulation cycle fonctionnalités de transformations de modèles (entre autres de la génération de code) afin de simplifier le cycle de modèles de plus en plus compliqués, soit parce qu'ils approchent de plus en plus la complexité du

Paris-Sud XI, Université de

236

Psychologie Franaise (2000), 45, 4, 295-306. Pour une thorie "motrice" de la simulation  

E-Print Network [OSTI]

1 Psychologie Française (2000), 45, 4, 295-306. Pour une théorie "motrice" de la simulation Joëlle-circuit", d'une manière qui n'engage pas directement une réponse motrice ; mais la simulation exploite les

Paris-Sud XI, Université de

237

Enqute insertion professionnelle 2006 Les diplms de DEUST en 2004  

E-Print Network [OSTI]

informateur médical (VIM) sont en emploi. 5 (sur 8) diplômés de DEUST technicien qualité industrielle (TQI) et'études Recherche d'emploi 27 4 Les poursuites d'études Exception faite du DEUST VIM, plus de la moitié des VIM. #12;Note méthodologique Les données synthétisées ici sont le résultat d'une enquête annuelle

Jeanjean, Louis

238

LES' URENCO-USA Facility | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergy Health andofIanJennifer SomersKnown ChallengesLES' URENCO-USA Facility LES'

239

Influence du strontium sur la minéralisation initiée par les vésicules matricielles et sur l’activité de la phosphatase alcaline.  

E-Print Network [OSTI]

??Les vésicules matricielles sont des organites extracellulaires impliques dans les processus de minéralisation. Nous avons détermine le mode d’action du strontium, ion contenu dans le… (more)

Bechkoff, Géraldine

2009-01-01T23:59:59.000Z

240

Analyse Statistique de la Pollution par les PM10 en Haute-Normandie  

E-Print Network [OSTI]

Analyse Statistique de la Pollution par les PM10 en Haute-Normandie Fran¸cois-Xavier Jolloisa travail porte sur l'analyse de la pollution par les particules PM10 en r´egion Haute- Normandie entre 2004´eaires et les m´elanges de mod`eles lin´eaires, on mod´elise les effets des vari- ables sur la pollution par

Boyer, Edmond

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


241

Les huiles essentielles La flore de la Nouvelle-Caldonie est extrmement diversifie, avec un taux  

E-Print Network [OSTI]

Royaume-Uni et d'Europe, et ce, dès les années 1890. Turbina inopinata ou Guirlande des bois, espèce

242

Les groupes financiers et industriels au service du roi -Espagne Fin XVIIe -dbut XVIIIe sicle  

E-Print Network [OSTI]

'une part de la puissance publique y avaient massivement recours, les évêques, les seigneurs, les villes importance au XVIIIe siècle. Voir, entre autres: Torres Sánchez (Rafael), "El gran negocio de la época, la

Paris-Sud XI, Université de

243

Les nanosciences : (r)volution des savoirs et des technologies ?  

E-Print Network [OSTI]

1 Les nanosciences : (r)évolution des savoirs et des technologies ? Jean-Louis Pautrat Physicien, ancien Directeur de la Fondation "Nanosciences aux limites de la nanoélectronique" 23 rue des Martyrs : miniaturisation ; microélectronique ; nanomatériaux ; nanosciences ; nanomédecine 1 - Introduction Tout « honnête

Boyer, Edmond

244

LA RUNION, MADAGASCAR, LES D'AFRIQUE ? Vincent CAPDEPUY  

E-Print Network [OSTI]

regard la tèr, ou oi na Madagascar, ou oi nana lo gran kontinan afrikin. Donk moi lé Afrikin déza par jusquà la ville du Cap au Sud, du cap Guardafui à lEst jusquaux îles du Cap-Vert à lOuest, lAfrique est

Paris-Sud XI, Université de

245

PRELIMINARY LES OVER A HYPERSONIC ELLIPTICAL CROSS-SECTION CONE  

E-Print Network [OSTI]

PRELIMINARY LES OVER A HYPERSONIC ELLIPTICAL CROSS-SECTION CONE M.P. MARTIN Mechanical. The characteristics of the hypersonic flow around an elliptical- cross section cone and the computational code of transitional and turbulent flows are not fully understood. This is especially true in the hypersonic regime

Martín, Pino

246

LES of a Hydrogen-Enriched Lean Turbulent Premixed Flame  

E-Print Network [OSTI]

LES of a Hydrogen-Enriched Lean Turbulent Premixed Flame Francisco E. Hern´andez-P´erez , Clinton the observed behaviour is examined. Hydrogen-hydrocarbon fuel blends appear to be a promising option to synergistically pave the way toward pure hydrogen-based combustion systems while alleviating green-house gas

Groth, Clinton P. T.

247

Contribution l'histoire d'un lieu commun : l'attribution Chateaubriand de la phrase les forts prcdent les peuples, les dserts les suivent . Un exemple d'utilisation du  

E-Print Network [OSTI]

Page 1/11 Contribution à l'histoire d'un lieu commun : l'attribution à Chateaubriand de la phrase biodiversité sous l'impact des activités humaines. Mais comme les autres utilisateurs de cette citation, il ne citation par Huxley, qui, on le sait, a exercé une grande influence sur la contre-culture des années 1960

Boyer, Edmond

248

LE CONTROLE DE GESTION DANS LES FUSIONS-ACQUISITIONS  

E-Print Network [OSTI]

1 LE CONTROLE DE GESTION DANS LES FUSIONS-ACQUISITIONS INTERNATIONALES : UN OUTIL D'INTEGRATION ? Ludivine Chalençon Doctorante en Sciences de Gestion (titulaire d'un contrat doctoral) Centre de recherche contrôle de gestion peut constituer un pivot pouvant freiner mais également aider la réunion des entités

Boyer, Edmond

249

Revue Franaise de Gestion Dossier : Les entrepreneurs seniors  

E-Print Network [OSTI]

1 Revue Française de Gestion Dossier : « Les entrepreneurs seniors » Titre : Handicap à la statistiques SINE ainsi que deux cas de seniors entrepreneurs. Un cadre d'analyse est proposé qui montre Française de Gestion 38, 227 (2012) 111-125" #12;2 Handicap à la nouveauté et senior : la nouveauté de l

Boyer, Edmond

250

Les infinitifs en persan Reza Mir-Samii*  

E-Print Network [OSTI]

Les infinitifs en persan Reza Mir-Samii* & Pollet Samvelian** 1. INTRODUCTION L''infinitif persan syntaxiques de l'infinitif en persan. Cette description nous permettra d'identifier deux emplois distincts'INFINITIF EN PERSAN L'infinitif persan est formé d'un radical verbal et de la désinence -an. Chaque forme

Paris-Sud XI, Université de

251

LES SYSTEMES DE MESURE DE PERFORMANCE EN COLLECTIVITES  

E-Print Network [OSTI]

(NPM). Cela s'est principalement traduit par une transition vers des modes de gestion axés sur les, 2000). La généralisation des principes du NPM au sein des pays de l'OCDE a été étudiée selon plusieurs

Paris-Sud XI, Université de

252

HABILITATION A DIRIGER LES RECHERCHES UNIVERSITE DE NICE SOPHIA ANTIPOLIS  

E-Print Network [OSTI]

HABILITATION A DIRIGER LES RECHERCHES UNIVERSITE DE NICE SOPHIA ANTIPOLIS ECOLE DOCTORALE STIC CARACTERISATION ASSOCIEES présentée et soutenue publiquement par Cyril LUXEY à Sophia-Antipolis le 21 Novembre Examinateur Gilles Jacquemod, Professeur, Université de Nice-Sophia Antipolis Examinateur Christian Pichot

Paris-Sud XI, Université de

253

Les granites varisques du Massif Armoricain Ramon Capdevila  

E-Print Network [OSTI]

1 Les granites varisques du Massif Armoricain Ramon Capdevila Géosciences Rennes - Adresse actuelle granites à biotite et hornblende, de composition orogénique, issue de la fusion d'un manteau enrichi par la faveur de roches basiques mantelliques contaminées et de granites crustaux I-type hybridisés avec du

Boyer, Edmond

254

ESPACE PROBLEME, FUSION ET PARALLLISME DANS LES INTERFACES MULTIMODALES  

E-Print Network [OSTI]

Homme­Machine est l'extension des facultés sensori­motrices des ordinateurs en vue de répondre aux­machine [Krueger, 1985]. L'objectif des ``interfaces nouvelles'' est d'étendre les facultés sensori­motrices des

Nigay, Laurence

255

ESPACE PROBLEME, FUSION ET PARALLLISME DANS LES INTERFACES MULTIMODALES  

E-Print Network [OSTI]

Homme-Machine est l'extension des facultés sensori-motrices des ordinateurs en vue de répondre aux-machine [Krueger, 1985]. L'objectif des "interfaces nouvelles" est d'étendre les facultés sensori-motrices des

Nigay, Laurence

256

TUDE DES PHOTODSINTGRATIONS. , II. QUELQUES RSULTATS EXPRIMENTAUX SUR LES PHOTODSINTGRATIONS  

E-Print Network [OSTI]

était inférieur à ceux observés, en général, par Hirzel et Wâffler. Toms, Halpern et Stephens [5], [6 les iso- topes du magnésium, dont certaines conduisent à des nuclides stables. Byerly et Stephens [7

Paris-Sud XI, Université de

257

Association Les Amis de Mathias Delcor Journe d'tude  

E-Print Network [OSTI]

Catalogne 29 Juillet 2008 Palau de Cerdagne (Pyrénées Orientales) hal-00486491,version1-25May2010 Manuscrit auteur, publié dans "Les Juifs dans la société Médiévale en Catalogne, Palau de Cerdagne (Pyrénées

Paris-Sud XI, Université de

258

Les dbuts du moteur Diesel en France Nouveaux lments historiques  

E-Print Network [OSTI]

1 Les débuts du moteur Diesel en France Nouveaux éléments historiques par Jean-Michel Althuser 1 et Paul-Antoine Naegel 2 Résumé : Après la biographie de Rudolf DIESEL par son fils Eugen, parue dans sa première édition à Hambourg en 1937, après un dossier spécial consacré à DIESEL en 1966 par la revue

Paris-Sud XI, Université de

259

Micro et Nano Physique Cours 1 : les principes de la  

E-Print Network [OSTI]

Micro et Nano Physique (MNP) Cours 1 : les principes de la mécanique quantique (approche conceptuelle) #12;Micro et nano physique (MNP)page 1 Pourquoi un cours sur la physique microscopique ? · Une fondamentaux à la base des technologies du numérique #12;Micro et nano physique (MNP)page 2 Organisation de l

Rioul, Olivier

260

LES VARIATIONS DE LA COMPOSITION MINRALE DU LAIT DE VACHE  

E-Print Network [OSTI]

. Cette teneur de 0,4 g de HgCl2 par litre de lait ne perturbe pas le'une solution (1) de sublimé pour 160 ml de lait, les échantillons ont été placés en chambre froide à 0-20 C

Paris-Sud XI, Université de

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


261

Etres soumis, Etres protecteurs : Padmasambhava et les Huit Categories de Diex et Demons au Bhuthan  

E-Print Network [OSTI]

les trois premières. Il s'agit d'un passage où les Huit catégoriesmettent le monde sens dessus dessous et rassemblent11 "l'armée des sa bdag etdes gnyan, celle des bdud mo et des gnod sbyin, celle des klu et des gza'(planètes), celle des rgyal po et... petites di-mensions les Huit catégories. L'inscription sous la statue se lit ainsi :"Incitées par les démons, les armées des confins s’approchent du centre.En ces temps où existent des dangers de destruction de centres religieux etd'ermitages situés dans...

Pommaret, Françoise

2003-01-01T23:59:59.000Z

262

Minimalist Model of Ice Microphysics in Mixed-phase Stratiform Clouds  

SciTech Connect (OSTI)

The question of whether persistent ice crystal precipitation from super cooled layer clouds can be explained by time-dependent, stochastic ice nucleation is explored using an approximate, analytical model, and a large-eddy simulation (LES) cloud model. The updraft velocity in the cloud defines an accumulation zone, where small ice particles cannot fall out until they are large enough, which will increase the residence time of ice particles in the cloud. Ice particles reach a quasi-steady state between growth by vapor deposition and fall speed at cloud base. The analytical model predicts that ice water content (wi) has a 2.5 power law relationship with ice number concentration ni. wi and ni from a LES cloud model with stochastic ice nucleation also confirm the 2.5 power law relationship. The prefactor of the power law is proportional to the ice nucleation rate, and therefore provides a quantitative link to observations of ice microphysical properties.

Yang, F.; Ovchinnikov, Mikhail; Shaw, Raymond A.

2013-07-28T23:59:59.000Z

263

L'ONOMASTIQUE IRANIENNE DANS LES SOURCES SYRIAQUES Quand les chrtiens d'Iran changent de nom (IVe-VIIe s.)  

E-Print Network [OSTI]

consacré au persan, kurde et ossète. Le vol. 4 concernera les noms propres des monnaies par M. Alram (1987

Paris-Sud XI, Université de

264

Myriam Catusse Les rinventions du social dans le Maroc  

E-Print Network [OSTI]

Myriam Catusse Les réinventions du social dans le Maroc "ajusté" Revue des mondes musulmans et de of depoliticization. Résumé : Le Maroc de l'ajustement structurel et de la libéralisation économique est le théâtre d, publiait un article intitulé «La trajectoire du Maroc indépendant : une panne de l'ascenseur social

Paris-Sud XI, Université de

265

Segmentation et appariement hierarchiques bases sur les pyramides combinatoires  

E-Print Network [OSTI]

'objets , reconstruction 3D Probl`eme d'appariement apparier des r´egions inconsistance lors de l'´etape de segmentation probl`eme d'inconsistance un m^eme objet pr´esent dans 2 images peut ^etre cod´e diff´erement dans les^ot´es. cadre ´energetique plusieurs heuristiques de fusions J.H. PRUVOT (GREYC) ICISP - 2008-10-25 6 / 32 #12

Brun, Chez Luc

266

A Standard format for Les Houches event files  

SciTech Connect (OSTI)

A standard file format is proposed to store process and event information, primarily output from parton-level event generators for further use by general-purpose ones. The information content is identical with what was already defined by the Les Houches Accord five years ago, but then in terms of Fortran commonblocks. This information is embedded in a minimal XML-style structure, for clarity and to simplify parsing.

Alwall, J.; Ballestrero, A.; Bartalini, P.; Belov, S.; Boos, E.; Buckley, A.; Butterworth, J.M.; Dudko, L.; Frixione, S.; Garren, L.; Gieseke, S.; Gusev, A.; Hinchliffe,I.; Huston, J.; Kersevan, B.; Krauss, F.; Lavesson, N.; Lonnblad, L.; Maina, E.; Maltoni, F.; Mangano, M.L.; /Louvain U. /Dresden, Tech. U. /Karlsruhe U., TP /Democritos Nucl. Res.Ctr. /INFN, Genoa /INFN, Turin /Turin U. /Cracow, INP /Dubna, JINR /SINP, Moscow /Serpukhov, IHEP /Ljubljana U. /Lund U. /CERN /Zurich, ETH /Cambridge U. /Durham U., IPPP/University Coll. London /Manchester U. /Fermilab /LBL, Berkeley; ,

2006-09-01T23:59:59.000Z

267

Habitat et dveloppement durable LES PERSPECTIVES OFFERTES PAR LE SOLAIRE  

E-Print Network [OSTI]

'Etudes de la Pollution Atmosphérique CEA : Commissariat à l'Energie Atomique EDF : Electricité de France GDF responsables des ministères chargés de l'Environnement, de l'Industrie, de la recherche, du Plan et du logement Construction. Emissions de particules ETUDE PROSPECTIVE SUR LES �MISSIONS DE PARTICULES PRIMAIRES EN FRANCE � L

Boyer, Edmond

268

Plongements fractionnaires Lien avec les empilements de boules  

E-Print Network [OSTI]

Plongements fractionnaires Lien avec les empilements de boules Preuve du th´eor`eme de Naor et Neiman Avatars du th´eor`eme de plongement d'Assouad P. Pansu 13 avril 2011 P. Pansu Avatars du th´eor th´eor`eme de Naor et Neiman On d´ecrit le probl`eme du plongement d'espaces doublants dans des

Pansu, Pierre

269

Les pompes chaleur, maillon-cl de la transition nergtique?  

E-Print Network [OSTI]

froid et du chaud. Avec un triplement prévu de leur production dans le cadre de la stratégie énergétique systèmes, pour éviter les problèmes techniques et optimiser leurs performances Identifier le rôle des'énergétique industrielle (LENI) 10h20 Pause 10h50 Integration of heat pumps in intensive renewable energy scenarios Poul

Loewith, Robbie

270

Des quipements mutualiss Les systmes d'information  

E-Print Network [OSTI]

modernisation de la flotte. La rénovation et l'agrandissement du pavillon d'accueil du centre IRD d'Île-de-France représentent l'essentiel de l'investissement en grands travaux. \\Un pavillon d'accueil au centre IRD Île-de-France Pour renforcer les capacités de recherche des pays du Sud, l'IRD accueille au centre Île-de-France une

271

Examen de mathmatiques 2009 Dure : 45 minutes. Je souhaite voir apparatre les calculs sur les copies. Tout rsultat livr  

E-Print Network [OSTI]

STIA3 Examen de mathématiques 2009 Durée : 45 minutes. Je souhaite voir apparaître les calculs sur la solution générale de l'équation di¤érentielle : y0 + y = 3x2 + 7: #12;STIA3 Examen de condition initiale y (0) = 1: #12;STIA 3 / Année 2011 Mise a niveau Math Durée 45 minutes Exercice 1

Mas, André

272

Quantum Simulation  

E-Print Network [OSTI]

Simulating quantum mechanics is known to be a difficult computational problem, especially when dealing with large systems. However, this difficulty may be overcome by using some controllable quantum system to study another less controllable or accessible quantum system, i.e., quantum simulation. Quantum simulation promises to have applications in the study of many problems in, e.g., condensed-matter physics, high-energy physics, atomic physics, quantum chemistry and cosmology. Quantum simulation could be implemented using quantum computers, but also with simpler, analog devices that would require less control, and therefore, would be easier to construct. A number of quantum systems such as neutral atoms, ions, polar molecules, electrons in semiconductors, superconducting circuits, nuclear spins and photons have been proposed as quantum simulators. This review outlines the main theoretical and experimental aspects of quantum simulation and emphasizes some of the challenges and promises of this fast-growing field.

I. M. Georgescu; S. Ashhab; Franco Nori

2014-03-13T23:59:59.000Z

273

Quelques slides sur les gr n s dans la serie : "hangman game for dummies"  

E-Print Network [OSTI]

Quelques slides sur les gr n s dans la s´erie : "hangman game for dummies" Laurent LIFL, Universit´e Lille 1 - INRIA Journ´ees au vert 20 et 21 mai 2011 Laurent Quelques slides sur les gr n s #12;NGS://www.illumina.com/systems/miseq.ilmn Laurent Quelques slides sur les gr n s #12;Alors, de quoi vais-je bien pouvoir parler ? Laurent Quelques

Noé, Laurent

274

E-Print Network 3.0 - avec les surfaces Sample Search Results  

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

Centre de mathmatiques Collection: Mathematics 30 Ecoulements multiphasiques TD1: tension de surface Summary: Antkowiak Film1: On chauffe la surface localement. Les...

275

LES KARATES UNE COMMUNAUTE CAIROTE A L'HEURE DE L'TAT-NATION  

E-Print Network [OSTI]

ensuite en Palestine au Xe siècle, et arriva en Egypte. Un certain nombre de familles persanes, dont les

Paris-Sud XI, Université de

276

avant-arriere dans les: Topics by E-print Network  

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

Information Sciences Websites Summary: 'utilisation de la fracturation hydraulique (fracking ou hydraulic fracturing dans les mondes anglophones) ont de provoquer et...

277

E-Print Network 3.0 - accelerators les accelerateurs Sample Search...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: accelerators les accelerateurs Page: << < 1 2 3 4 5 > >> 1 STRUCTURE ACCLRATRICE DE SYMTRIE...

278

Les fourmis sont des carri6ristes -Sciences et Avenir SaA BOutique  

E-Print Network [OSTI]

'rirrute eui pr*lddei {Vid+o ce iliani*lie l.4er.sch ei rlssa,':drrs Crcspi) Les chercheurs ont ainsi constat6

Alvarez, Nadir

279

LA SAISON COMME TEMPS SOCIAL : LA PRISE EN COMPTE DE LA SAISONNALITE DANS LES POLITIQUES TEMPORELLES  

E-Print Network [OSTI]

bilans ayant été dressés (Boulin, 2008 ; Mallet, 2011). Néanmoins, tout autant que les politiques d

Boyer, Edmond

280

E-Print Network 3.0 - azotes sur les Sample Search Results  

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

de soude; j'ai cherch voir si, malgr ces... diffrences entre les proprits phy- siques, la ... Source: Ecole Polytechnique, Centre de mathmatiques Collection:...

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


281

E-Print Network 3.0 - avec les molecules Sample Search Results  

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

incluse dans 1'energie de liaison de la molecule adsorbee. Enfin, les processus de resonance electronique... argissement des niveaux liant et antiliant de la ... Source:...

282

LES Simulations of Roll Clouds Observed During Mixed- Phase Arctic Cloud Experiment  

SciTech Connect (OSTI)

Roll clouds, and associated roll convection, are fairly common features of the atmospheric boundary layer. While these organized cumuliform clouds are found over many regions of the planet, they are quite ubiquitous near the edge of the polar ice sheets. In particular, during periods of off-ice flow, when cold polar air flows from the ice pack over the relatively warm ocean water, strong boundary layer convection develops along with frequent rolls. According to Bruemmer and Pohlman (2000), most of the total cloud cover in the Arctic is due to roll clouds. In an effort to examine the influences of mixed-phase microphysics on the boundary layer evolution of roll clouds during off-ice flow, Olsson and Harrington (2000) used a 2D mesoscale model coupled to a bulk microphysical scheme (see Section 2). Their results showed that mixed-phase clouds produced more shallow boundary layers with weaker turbulence than liquid-phase cases. Furthermore, their results showed that because of th e reduced turbulent drag on the atmosphere in the mixed-phase case, regions of mesoscale divergence in the marginal ice-zone were significantly affected. A follow-up 2D study (Harrington and Olsson 2001) showed that the reduced turbulent intensity in mixed-phase cases was due to precipitation. Ice precipitation caused downdraft stabilization which fed back and caused a reduction in the surface heat fluxes. In this work, we extend the work of Olsson and Harrington (2000) and Harrington and Olsson (2001) by examining the impacts of ice microphysics on roll convection. We will present results that illustrate how microphysics alters roll cloud structure and dynamics.

Greenberg, S.D.; Harrington, J.Y.; Prenni, A.; DeMott, P.

2005-03-18T23:59:59.000Z

283

Numerical simulation and sensitivity study of a severe hailstorm in northeast Spain  

E-Print Network [OSTI]

Numerical simulation and sensitivity study of a severe hailstorm in northeast Spain E. García Atmósfera, Instituto de Medio Ambiente, Universidad de León, 24071 León, Spain b Grup de Meteorologia, Departament de Física, Universitat de les Illes Balears, Palma de Mallorca, Spain Accepted 8 August 2005

Romero, Romu

284

Master thesis: "Validation of wake-simulation models based on long-range lidar measurements."  

E-Print Network [OSTI]

REpower 6M wind turbines with rotor blades of different designs installed in the Ellhöft/Westre wind farm developed by the wind turbine manufacturer. Work plan 2011 2012 Task 11 12 01 02 03 04 05 06 07 08 09 10 Figure 1: Simulation of lidar measurements in the wake of a wind turbine using a LES generated wind field

Peinke, Joachim

285

LES FRACTIONS DCIMALES : UN ART D'INGNIEUR ? Dans les premires dcennies du XIXe sicle, le calcul dcimal fait partie du bagage  

E-Print Network [OSTI]

décimales dans les tables de son Atlas de la science de l'ingenieur de 1825, tout comme Jean Joseph Regnault, dont les opérations sont décrites comme compliquées, et fractions décimales, aux opérations faciles élémentaire à l'époque moderne1. Mais les historiens en ont souvent déduit d'emblée, à partir de ses traces

Boyer, Edmond

286

Intercomparison of cloud model simulations of Arctic mixed-phase boundary layer clouds observed during SHEBA/FIRE-ACE  

SciTech Connect (OSTI)

An intercomparison of six cloud-resolving and large-eddy simulation models is presented. This case study is based on observations of a persistent mixed-phase boundary layer cloud gathered on 7 May, 1998 from the Surface Heat Budget of Arctic Ocean (SHEBA) and First ISCCP Regional Experiment - Arctic Cloud Experiment (FIRE-ACE). Ice nucleation is constrained in the simulations in a way that holds the ice crystal concentration approximately fixed, with two sets of sensitivity runs in addition to the baseline simulations utilizing different specified ice nucleus (IN) concentrations. All of the baseline and sensitivity simulations group into two distinct quasi-steady states associated with either persistent mixed-phase clouds or all-ice clouds after the first few hours of integration, implying the existence of multiple equilibria. These two states are associated with distinctly different microphysical, thermodynamic, and radiative characteristics. Most but not all of the models produce a persistent mixed-phase cloud qualitatively similar to observations using the baseline IN/crystal concentration, while small increases in the IN/crystal concentration generally lead to rapid glaciation and conversion to the all-ice state. Budget analysis indicates that larger ice deposition rates associated with increased IN/crystal concentrations have a limited direct impact on dissipation of liquid in these simulations. However, the impact of increased ice deposition is greatly enhanced by several interaction pathways that lead to an increased surface precipitation flux, weaker cloud top radiative cooling and cloud dynamics, and reduced vertical mixing, promoting rapid glaciation of the mixed-phase cloud for deposition rates in the cloud layer greater than about 1-2x10-5 g kg-1 s-1. These results indicate the critical importance of precipitation-radiative-dynamical interactions in simulating cloud phase, which have been neglected in previous fixed-dynamical parcel studies of the cloud phase parameter space. Large sensitivity to the IN/crystal concentration also suggests the need for improved understanding of ice nucleation and its parameterization in models.

Morrison, H.; Zuidema, Paquita; Ackerman, Andrew; Avramov, Alexander; de Boer, Gijs; Fan, Jiwen; Fridlind, Ann; Hashino, Tempei; Harrington, Jerry Y.; Luo, Yali; Ovchinnikov, Mikhail; Shipway, Ben

2011-06-16T23:59:59.000Z

287

Periodisation : les transformations de Floquet et de Bloch  

E-Print Network [OSTI]

Fu(, X) = nZ u(X + nde1)e-i(x+nd) . Un simple changement de variable sur n permet de montrer que Fu : Fu(+ 2 d , X) = nZ u(X+nde1)e-i(x+nd) e-i2(x+nd)/d = e-i2x/d Fu(, X). On peut d´efinir une d´eriv´ees selon les deux directions x Fu(, X) = nZ x u(X + nde1)e-i(x+nd) + nZ u(X + nde1)(-i

Bidegaray, Brigitte

288

Comptes Rendus des JNC 17 -Poitiers 2011 Simulation par lments finis des procds par infusion de rsine  

E-Print Network [OSTI]

Comptes Rendus des JNC 17 - Poitiers 2011 Simulation par éléments finis des procédés par infusion de résine Finite Simulation of the liquid infusion processes G. Pacquaut, J. Bruchon, N. Moulin, S permettant de simuler par éléments finis les procé- dés par infusion de résine au travers de renforts fibreux

Paris-Sud XI, Université de

289

Energy- and flux-budget (EFB) turbulence closure model for the stably stratified flows. Part I: Steady-state, homogeneous regimes  

E-Print Network [OSTI]

We propose a new turbulence closure model based on the budget equations for the key second moments: turbulent kinetic and potential energies: TKE and TPE (comprising the turbulent total energy: TTE = TKE + TPE) and vertical turbulent fluxes of momentum and buoyancy (proportional to potential temperature). Besides the concept of TTE, we take into account the non-gradient correction to the traditional buoyancy flux formulation. The proposed model grants the existence of turbulence at any gradient Richardson number, Ri. Instead of its critical value separating - as usually assumed - the turbulent and the laminar regimes, it reveals a transition interval, 0.11. Predictions from this model are consistent with available data from atmospheric and lab experiments, direct numerical simulation (DNS) and large-eddy simulation (LES).

S. S. Zilitinkevich; T. Elperin; N. Kleeorin; I. Rogachevskii

2007-02-19T23:59:59.000Z

290

Les dfis de l'valuation conomique du patrimoine urbain des pays en dveloppement  

E-Print Network [OSTI]

Les défis de l'évaluation économique du patrimoine urbain des pays en développement Methods for the economic valuation of urban heritage: a sustainability-based approach L. Dalmas, V. Geronimi, J.-F. Noël, J2013 #12;3 Les défis de l'évaluation économique du patrimoine urbain des pays en développement Methods

Boyer, Edmond

291

Universit Joseph Fourier Master 2 Recherche -Systmes et Logiciels Gestion de ressources dans les services Internet  

E-Print Network [OSTI]

Université Joseph Fourier Master 2 Recherche - Systèmes et Logiciels Gestion de ressources dans machines devient donc un réel problème, et on a désormais besoin de solutions de gestion de ressources pour-même suivis de serveurs de base de données. Les approches actuelles de gestion de ressources dans les services

Pous, Damien

292

Depuis les annes 1950, le recours l'automobile pour de courts  

E-Print Network [OSTI]

Depuis les années 1950, le recours à l'automobile pour de courts trajets quotidiens ne cesse de elles seules, à réduire le recours à l'automobile. La question se pose alors de cerner les conditions permettant de changer le comportement en matière de choix modal (bus ou automobile) : le station- nement ne

Paris-Sud XI, Université de

293

Critres d'valuation pour les interfaces des systmes de recherche d'information  

E-Print Network [OSTI]

'information servent de lien entre les utilisateurs et les systèmes de recherche d'information, et permettent donc de comparer ces interfaces. ABSTRACT. Visualization of search results is an essential step in the Information that takes visualization of search results, many interfaces (which can be textual, in 2D or in 3D) have been

Paris-Sud XI, Université de

294

SIMILITUDE DE CERTAINS ASPECTS CLINIQUES DE LA MALNUTRITION PROTINO-NERGTIQUE AVEC LES CARENCES EN CUIVRE,  

E-Print Network [OSTI]

is highlighted and the possible use of trace element therapy in livestock under malnutrition conditions devient roux chez les Frisonnes Pie-Noires, jaune-gris dans la race Brune de l'Atlas et jaune-orange chez les croisées Brune de l'Atlas-Santa Gertrudis. Chez le mouton on assiste, chez 5 à 10 % des animaux du

Paris-Sud XI, Université de

295

Les lHa srin sde brgyad et le probleme de leur categorisation - Une interpretation  

E-Print Network [OSTI]

entre les maîtres de maison, au moment des offrandes auxklu et aux bcan dans les jardins : le soin mis à offrir des coupelles de lait etdes lampes à huile était, d’une certaine façon, destiné autant à nourrir lesdivinités souterraines hantant l...

Steinmann, Brigitte

2003-01-01T23:59:59.000Z

296

1424 : Les navires de Calicut se dtournent d'Aden au profit de Djedda L'avnement d'une nouvelle route des pices  

E-Print Network [OSTI]

nakhudha, un mot arabe d'origine persane signifiant les « maîtres des navires ». Mentionnés dans les textes

Paris-Sud XI, Université de

297

La fonction dambulatoire des lieux marchands intrieurs Les relations entre le commerce de dtail et les mobilits en ville ont t analyses par la  

E-Print Network [OSTI]

La fonction déambulatoire des lieux marchands intérieurs Les relations entre le commerce de détail ; Desse, 2001). Dans les travaux portant sur l'accessibilité des espaces marchands, la mobilité est'espaces marchands une part importante du déplacement des consommateurs se déroule dans leurs intérieurs, selon une

Paris-Sud XI, Université de

298

LES REVUES D'EXCELLENCE EN ECONOMIE ET EN GESTION : DISCORDANCES ENTRE LA CLASSIFICATION DE L'AERES ET LES FACTEURS  

E-Print Network [OSTI]

1 LES REVUES D'EXCELLENCE EN ECONOMIE ET EN GESTION : DISCORDANCES ENTRE LA CLASSIFICATION DE L'AERES novembre 2009 En 2008, l'agence d'évaluation de la recherche et de l'enseignement supérieur (AERES 109 revues parmi les 594 (18%) revues classées A, B ou C par l'AERES ont des facteurs d'impact par

Paris-Sud XI, Université de

299

Revue mditerrane n3-4 2008 Les ports-frontires de Trieste, Koper et Rijeka, futurs dbouchs pour les conteneurs  

E-Print Network [OSTI]

1 Revue méditerranée n°3-4 2008 Les ports-frontières de Trieste, Koper et Rijeka, futurs débouchés marchés se dessinent naturellement pour les ports du nord-est de la Mer Adriatique, Trieste (Italie Suez. Si la création des trois ports est directement liée à l'éclatement politique de la péninsule

Paris-Sud XI, Université de

300

CURRICULUM VITAE CHARLES MENEVEAU  

E-Print Network [OSTI]

, "Large Eddy Simulation study of scalar transport in fully developed wind-turbine array boundary layers" (2011), Phys. Fluids (submitted). 3) K. Bai, C. Meneveau & J. Katz, "Near-wake turbulent flow structure

Meneveau, Charles

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


301

SciTech Connect: Comparison of the Dynamic Wake Meandering Model...  

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

Wake Meandering Model, Large-Eddy Simulation, and Field Data at the Egmond aan Zee Offshore Wind Plant: Preprint Citation Details In-Document Search Title: Comparison of the...

302

air-breathing missile configurations: Topics by E-print Network  

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

recurrence satisfied by the Stirling numbers of the second kind. Abrams, Aaron; Hower, Valerie 2010-01-01 99 Large-eddy Simulation of NASA LaRC Coaxial He-O2Air Jet. Open...

303

PECO: l'euro s'loigne Aprs un lger ralentissement en 2005, les Nouveaux pays membres  

E-Print Network [OSTI]

PECO: l'euro s'éloigne Après un léger ralentissement en 2005, les Nouveaux pays membres (NPM) * ont restée très soutenue en 2006 dans tous les NPM, dont les indicateurs conjoncturels affichent tous des'oeuvre dans la plupart des NPM, qui ont ainsi vu les revenus augmenter en 2006. Ces hausses de revenus

Paris-Sud XI, Université de

304

Multi-scale thermalhydraulic analyses performed in Nuresim and Nurisp projects  

SciTech Connect (OSTI)

The NURESIM and NURISP successive projects of the 6. and 7. European Framework Programs joined the efforts of 21 partners for developing and validating a reference multi-physics and multi-scale platform for reactor simulation. The platform includes system codes, component codes, and also CFD or CMFD simulation tools. Fine scale CFD simulations are useful for a better understanding of physical processes, for the prediction of small scale geometrical effects and for solving problems that require a fine space and/or time resolution. Many important safety issues usually treated at the system scale may now benefit from investigations at a CFD scale. The Pressurized Thermal Shock is investigated using several simulation scales including Direct Numerical Simulation, Large Eddy Simulation, Very Large Eddy Simulation and RANS approaches. At the end a coupling of system code and CFD is applied. Condensation Induced Water-Hammer was also investigated at both CFD and 1-D scale. Boiling flow in a reactor core up to Departure from Nucleate Boiling or Dry-Out is investigated at scales much smaller than the classical subchannel analysis codes. DNS was used to investigate very local processes whereas CFD in both RANS and LES was used to simulate bubbly flow and Euler-Lagrange simulations were used for annular mist flow investigations. Loss of Coolant Accidents are usually treated by system codes. Some related issues are now revisited at the CFD scale. In each case the progress of the analysis is summarized and the benefit of the multi-scale approach is shown. (authors)

Bestion, D. [CEA-Grenoble, DEN-DANS-DM2S, Grenoble, (France); Lucas, D. [Helmholtz-Zentrum Dresden-Rossendorf, Dresden, (Germany); Anglart, H. [KTH Royal Institute of Technology, Stockholm, (Sweden); Niceno, B. [Paul Scherrer Institute, Villingen, (Switzerland); Vyskocil, L. [Nuclear Research Institute Rez plc, Rez, (Czech Republic)

2012-07-01T23:59:59.000Z

305

REVUE DE PHYSIQUE APPLIQUE Simulation d'un transistor MOS silicium-sur-isolant dsertion profonde  

E-Print Network [OSTI]

tensions de grilles avant (Vg1) et arrière (Vg2) appliquées. Nous dédui- sons aussi les caractéristiques Id(Vg1, Vg2) à faible tension de drain. Les caractéristiques Id(Vg2) simulées sont comparées aux caractéristiques Id(Vg2) obtenues avec des transistors CMOS/SOS. Le saphir de ces dispositifs a été localement

Boyer, Edmond

306

Caracteristiques et determination de la matiere organique dans les mchefers d'incineration d'ordures menageres (MIOM)  

E-Print Network [OSTI]

2001-80 Caracteristiques et determination de la matiere organique dans les mächefers d'incineration matiere organique dans les Residus de Procedes Thermiques dont les Mächefers d'incineration d, bois...). Bien que l'efficacite de combustion des equipements collectifs d'incineration ne cesse de

Paris-Sud XI, Université de

307

F. Flipo, Les ingalits cologiques et sociales : l'apport des thories de la justice, Mouvements, n60, octobre-dcembre 2009, pp. 59-76.  

E-Print Network [OSTI]

, social, theories of justice, philosophy, inequalities. Introduction Amartya Sen a montré que toutes les

Paris-Sud XI, Université de

308

New capability will help accelerate design improvements by providing a high-fidelity simulation tool to study power  

E-Print Network [OSTI]

New capability will help accelerate design improvements by providing a high-fidelity simulation augmentation and use of the combined LES-hydroelastic code will help accelerate the development of effective, efficient, and reliable hydrokinetic energy conversion technologies, thus helping to lower the cost

309

Impact of subgrid-scale radiative heating variability on the stratocumulus-to-trade cumulus transition in climate models  

SciTech Connect (OSTI)

Subgrid-scale interactions between turbulence and radiation are potentially important for accurately reproducing marine low clouds in climate models. To better understand the impact of these interactions, the Weather Research and Forecasting (WRF) model is configured for large eddy simulation (LES) to study the stratocumulus-to-trade cumulus (Sc-to-Cu) transition. Using the GEWEX Atmospheric System Studies (GASS) composite Lagrangian transition case and the Atlantic Trade Wind Experiment (ATEX) case, it is shown that the lack of subgrid-scale turbulence-radiation interaction, as is the case in current generation climate models, accelerates the Sc-to-Cu transition. Our analysis suggests that in cloud-topped boundary layers subgrid-scale turbulence-radiation interactions contribute to stronger production of temperature variance, which in turn leads to stronger buoyancy production of turbulent kinetic energy and helps to maintain the Sc cover.

Xiao, Heng; Gustafson, William I.; Wang, Hailong

2014-04-29T23:59:59.000Z

310

E-Print Network 3.0 - avec les resultats Sample Search Results  

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

matriciel TP 2 Systemes d'equations lineaires Summary: analytiquement, puis avec Matlab. Comparer les resultats. Calculer u null(A) et v null(A, 'r') (A est la... ...

311

Modles et mthodes pour la logistique urbaine: les problmes de tournes de vhicules deux chelons  

E-Print Network [OSTI]

marchandises en ville dan sune optique d'aide à la décision, plus précisément sur les problèmes de tournées de

Boyer, Edmond

312

DIFFUSION QUASI ELASTTOUE SUR DES GROUPEMENTS DE NUCLEONS DANS LES NOYAUX C 156 MeV  

E-Print Network [OSTI]

residual nucleus energy spectra appear to be in agreement with the inter- mediate coupling shell probabilité relative pour 6 3 Li-» t + He est par contre d'un ordre de gran- deur plus petit. Les spectres d

Boyer, Edmond

313

E-Print Network 3.0 - avec les esprits Sample Search Results  

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

esprits Search Powered by Explorit Topic List Advanced Search Sample search results for: avec les esprits Page: << < 1 2 3 4 5 > >> 1 GrgoireSchlemmer Jeuxd'esprits Summary:...

314

E-Print Network 3.0 - avenir pour les Sample Search Results  

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

Collection: Biology and Medicine 2 Tables des principaux minerais d'uranium et de thorium Summary: tre complte ni les indi- cations dtailles. Elle n'a pour but actuel...

315

E-Print Network 3.0 - architecture les etapes Sample Search Results  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: architecture les etapes Page: << < 1 2 3 4 5 > >> 1 Bases de Donnes -TD6 Licence Informatique...

316

Prsence du Tobacco Rattle Virus (TRV) dans les cultures d'artichaut en France (1)  

E-Print Network [OSTI]

'inoculation est effectuée en présence de charbon végétal activé et de carborundum 600 mesh (80 mg/ml dans les 2

Paris-Sud XI, Université de

317

LES FERRITES A MMOIRE G. GRUNBERG, H. JEANTILS et H. de SILVESTRE  

E-Print Network [OSTI]

859 LES FERRITES A M�MOIRE G. GRUNBERG, H. JEANTILS et H. de SILVESTRE COFELEC Mémoires, B. P. 203 APPLIQU�E TOME 9, SEPTEMBRE 1974, PAGE L'utilisation de tores de ferrite comme éléments mémoire remonte à ferrite dans les mémoires repose sur l'existence d'un cycle d'hystérésis pratiquement rectangulaire, qui

Boyer, Edmond

318

LA GESTION DE L'EAU PAR LES ASSOCIATIONS DE PROPRITAIRES FONCIERS  

E-Print Network [OSTI]

LA GESTION DE L'EAU PAR LES ASSOCIATIONS DE PROPRI�TAIRES FONCIERS Méthodologie pour un, est posée la question du devenir de ces structures et de leur participation à une gestion de l'eau à gestion à long terme de ces structures et de la ressource en eau, notamment par les acteurs locaux grâce à

Paris-Sud XI, Université de

319

Deux cent ans de gologie travers les paysages languedociens autour du Pic Saint Loup  

E-Print Network [OSTI]

précurseurs ont d'abord établi la succession stratigraphique des roches, puis ils ont commencé de reporter les garrigues, lardées d'escarpement rocheux et de petites plaines cultivées, caractérisent les paysages strates, tant sous la surface que vers le ciel ; il relèvera aussi la distribution des différentes

Boyer, Edmond

320

LES SPECTRES L D'MISSION ET D'ABSORPTION DU THORIUM ET SES NIVEAUX CARACTRISTIQUES  

E-Print Network [OSTI]

LES SPECTRES L D'�MISSION ET D'ABSORPTION DU THORIUM ET SES NIVEAUX CARACT�RISTIQUES Par YVETTE étude précise d'ensemble sur le spectre d'émission L du thorium comprenant la mesure de toutes les raies niveaux du thorium qui prennent part aux émissions X normales. Ces valeurs qui diffèrent sensiblement de

Boyer, Edmond

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


321

ABSORPTION INFRA-ROUGE DANS LES ALLIAGES NORMAUX Par B. CAROLI (1),  

E-Print Network [OSTI]

884. ABSORPTION INFRA-ROUGE DANS LES ALLIAGES NORMAUX Par B. CAROLI (1), Résumé. - L'absorption de'électrons de Bloch, par une méthode quantique. On en déduit pour les fréquences faibles un coefficient d'absorption sont estimées sur un exemple simple. Abstract. 2014 Infra-red absorption by dilute alloys is studied

Boyer, Edmond

322

Neurobiologie molculaire et cellulaire, Neurophysiologie Prsence des lus C dans les visites AERES de laboratoire  

E-Print Network [OSTI]

dans les visites AERES de laboratoire La section 25 du comité national, lors de sa première réunion du nouveau mandat, demande par cette motion à la direction du CNRS d'insister auprès de l'AERES pour que soit, président de l'AERES - Patrick BLADER, Laurent GROC et Dominique JOB, Délégués scientifiques pour les

van Tiggelen, Bart

323

Algorithmes hybrides pour la gestion intelligente de l'nergie dans les smart grids  

E-Print Network [OSTI]

Algorithmes hybrides pour la gestion intelligente de l'énergie dans les smart grids Robin ROCHE1 électrique plus intelligent, dit smart grid. Les travaux présentés dans cet article proposent un système de l'on nomme "smart grid", ou réseau électrique intelligent (Simoes et al., 2011) (voir figure 1

Paris-Sud XI, Université de

324

Revue sur les mthodes de dosage de la lignine utilises en alimentation animale  

E-Print Network [OSTI]

Revue sur les méthodes de dosage de la lignine utilisées en alimentation animale Sylvie GIGER I 75231 Paris Cedex 05 Résumé La lignine est un composé pariétal de nature non glucidique dont la lignine dans le contexte de l'alimentation animale sont rares. Avec les données actuellement disponibles

Paris-Sud XI, Université de

325

Multi-dimensional Longwave Forcing of Boundary Layer Cloud Systems  

SciTech Connect (OSTI)

The importance of multi-dimensional (MD) longwave radiative effects on cloud dynamics is evaluated in a large eddy simulation (LES) framework employing multi-dimensional radiative transfer (Spherical Harmonics Discrete Ordinate Method —SHDOM). Simulations are performed for a case of unbroken, marine boundary layer stratocumulus and a broken field of trade cumulus. “Snapshot” calculations of MD and IPA (independent pixel approximation —1D) radiative transfer applied to LES cloud fields show that the total radiative forcing changes only slightly, although the MD effects significantly modify the spatial structure of the radiative forcing. Simulations of each cloud type employing MD and IPA radiative transfer, however, differ little. For the solid cloud case, relative to using IPA, the MD simulation exhibits a slight reduction in entrainment rate and boundary layer TKE relative to the IPA simulation. This reduction is consistent with both the slight decrease in net radiative forcing and a negative correlation between local vertical velocity and radiative forcing, which implies a damping of boundary layer eddies. Snapshot calculations of the broken cloud case suggest a slight increase in radiative cooling, though few systematic differences are noted in the interactive simulations. We attribute this result to the fact that radiative cooling is a relatively minor contribution to the total energetics. For the cloud systems in this study, the use of IPA longwave radiative transfer is sufficiently accurate to capture the dynamical behavior of BL clouds. Further investigations are required in order to generalize this conclusion for other cloud types and longer time integrations. 1

Mechem, David B.; Kogan, Y. L.; Ovtchinnikov, Mikhail; Davis, Anthony B; Evans, K. F.; Ellingson, Robert G.

2008-12-20T23:59:59.000Z

326

Mise en place du systme de TMA dans les croles du Surinam : dveloppement interne ou contact de langues1 ?  

E-Print Network [OSTI]

1 Mise en place du système de TMA dans les créoles du Surinam : développement interne ou contact de anglaise du Surinam, et du ndyuka en particulier, montre une régularité à la fois dans les formes et dans différentes époques de contact. Les créoles de base lexicale anglaise du Surinam, résultat du contact entre

Paris-Sud XI, Université de

327

Th`eor`eme de Paley-Wiener pour les fonctions de Whittaker sur un groupe reductif p-adique  

E-Print Network [OSTI]

Th`eor`eme de Paley-Wiener pour les fonctions de Whittaker sur un groupe r´eductif p-adique Patrick transform´ee de Fourier pour cet espace et d'en caract´eriser l'image. Ce Th´eor`eme est l'analogue pour les fonctions de Whittaker du Th´eor`eme de Paley-Wiener pour les fonctions sur le groupe, du `a Joseph

Paris-Sud XI, Université de

328

Les figures acoustiques de Chladni. Figures acoustiques de Chladni Ernst Chladni ( 1756-1827) Figures acoustiques de Chladni 1787  

E-Print Network [OSTI]

Les figures acoustiques de Chladni. Figures acoustiques de Chladni Ernst Chladni ( 1756-1827) Figures acoustiques de Chladni 1787 Comme les cordes vibrantes, les plaques peuvent vibrer à différentes phénomène a été découvert par le physicien E. Chladni. Pour cela il fait vibrer à l'aide d'un archet une

d'Orléans, Université

329

CGILS: Results from the First Phase of an International Project to Understand the Physical Mechanisms of Low Cloud Feedbacks in Single Column Models  

SciTech Connect (OSTI)

Large Eddy Models (LES) and Single Column Models (SCM) are used in a surrogate climate change 101 to investigate the physical mechanism of low cloud feedbacks in climate models. Enhanced surface-102 driven boundary layer turbulence and shallow convection in a warmer climate are found to be 103 dominant mechanisms in SCMs.

Zhang, Minghua; Bretherton, Christopher S.; Blossey, Peter; Austin, Phillip A.; Bacmeister, J.; Bony, Sandrine; Brient, Florent; Cheedela, Suvarchal K.; Cheng, Anning; Del Genio, Anthony D.; De Roode, Stephan R.; Endo , Satoshi; Franklin, Charmaine N.; Golaz, Jean-Christophe; Hannay, Cecile; Heus, Thijs; Isotta, Francesco A.; Jean-Louis, Dufresne; Kang, In-Sik; Kawai, Hideaki; Koehler, M.; Larson, Vincent E.; Liu, Yangang; Lock, Adrian; Lohmann, U.; Khairoutdinov, Marat; Molod, Andrea M.; Neggers, Roel; Rasch, Philip J.; Sandu, Irina; Senkbeil, Ryan; Siebesma, A. P.; Siegenthaler-Le Drian, Colombe; Stevens, Bjorn; Suarez, Max; Xu, Kuan-Man; Von Salzen, Knut; Webb, Mark; Wolf, Audrey; Zhao, M.

2013-12-26T23:59:59.000Z

330

This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 8566  

E-Print Network [OSTI]

combustion instabilities in annular gas turbine combustors. Keywords Combustion instabilities · Large Eddy Using LES to Study Reacting Flows and Instabilities in Annular Combustion Chambers. (2012) Flow, Turbulence and Combustion, vol. 88 (n° 1-2). pp. 191-206. ISSN 1386-6184 Any correspondence concerning

Boyer, Edmond

331

Center for Turbulence Research Proceedings of the Summer Program 2012  

E-Print Network [OSTI]

systems. For instance, the structural integrity of turbine blades downstream of the combustor in a gas of a tensorial eddy diffusivity subgrid scale model for large-eddy simula- tion (LES) of passive scalar transport turbine engine is dependent on the amount of heat transferred to the surface from the incident hot gases

Wang, Wei

332

Les opportunités de la technologie CSP « concentrating solar power » dans la génération d'électricité renouvelable en Algérie.  

E-Print Network [OSTI]

??172 p. : ill. ; 30 cm Les énergies renouvelables constituent une alternative aux énergies fossiles. Elles contribuent à répondre aux besoins énergétiques actuels et… (more)

Bourezg-Dellili, Sabiha

2013-01-01T23:59:59.000Z

333

Pour citer cet article Soraya Boudia, Naissance, extinction et rebonds d'une controverse scientifique : les dangers  

E-Print Network [OSTI]

trouve à 160 km environ au nord-est de l'atoll Bikini dans les Iles Marshall, soit en dehors de la zone

Paris-Sud XI, Université de

334

LE CALENDRIER MAYA Du XVIe au XIXe sicle, la domination exerce par les Espagnols sur la plus grande  

E-Print Network [OSTI]

par le terme wooj) s'étend également sur les �tats avoisinants de Chiapas et Tabasco, sur le Guatemala

Boyer, Edmond

335

Rfrigration solaire par simulation en absorption sche J. Flchon et F. Machizaud  

E-Print Network [OSTI]

tracé dans une précédente publication [4] le réseau (1/T, Log P) du couple frigorigène CaCl2-NH3 pour, Log P) of the frigorigene couple CaCl2-NH3 for different concentrations in ammonia, by simulation we. Parmi les couples susceptibles d'un emploi efficace, CaCl2, NH3 a fait l'objet de réalisations

Boyer, Edmond

336

The second edition of the MISRA C guidelines Les Hatton,  

E-Print Network [OSTI]

to add to languages. Not so refreshingly, the application area was a nuclear reactor simulation program, CIS, University of Kingston Nine years ago, I finally finished a book entitled "Safer C", (Hatton 1995). The theme of this book was not to promote the use of C in high- integrity and safety critical systems

Hatton, Les

337

A restructurable logic simulator  

E-Print Network [OSTI]

, notably logic simulators. This paper reviews the event-driven simulation algorithm used by most software- based simulators and a handful of the existing special-purpose hardware-based logic simulation accelerators. A new hardware-based accelerator... architecture is then presented, that of the restructurab)e logic simulator. This accelerator is based on a, memory-like module. referred to as the restructurable logic simulation accelerator, that essentially "stores" a portion of the network to be simulated...

Ledford, Gordon Lee

1985-01-01T23:59:59.000Z

338

05/08/2011 12:30Pour la Science -Actualit -Les mles obsoltes Page 1 of 2http://www.pourlascience.fr/ewb_pages/a/actualite-les-males-obsoletes-27571.php  

E-Print Network [OSTI]

.pourlascience.fr/ewb_pages/a/actualite-les-males-obsoletes-27571.php © V. Cavale Une cochenille australienne (Icerya purchasi). POUR EN SAVOIR PLUS A. Gardner et Lhttp://www.pourlascience.fr/ewb_pages/a/actualite-les-males-obsoletes-27571.php Réagir à cet article

Gardner, Andy

339

Sur les germes de fonctions holomorphes a lieu singulier de dimension 1: le cas general.  

E-Print Network [OSTI]

.1 Le th´eor`eme de b-1 -r´egularit´e. . . . . . . . . . . . . . . . . . . . . 4 2.2 Estimation de G´en´eralise les points cruciaux des th´eor`emes 4.3.1 et 4.3.2 de [B.06]. Th´eor`eme 1.1.1 Soit f un germe de un ouvert non vide de V est nulle. hal-00124034,version1-12Jan2007 #12;Hypersurfaces III. 3 Les th´eor

Boyer, Edmond

340

contre sel et eau De nombreux deltas jalonnent les rivages de la Mditerrane.  

E-Print Network [OSTI]

plus importants, celui du Nil, du Rhône, du Pô et de l'�bre. Ils subissent naturellement des phénomènes de crue (eau douce ou salée) et d'assèchement sur des périodes plus longues que dans les plaines artificiel Pour cultiver les sols, il a d'abord été nécessaire d'évacuer l'eau saumâtre de ces milieux

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


341

ans cette puissance rgio-qu'est l'Iran, les don-  

E-Print Network [OSTI]

EDITORIAL ans cette puissance régio- nale1 qu'est l'Iran, les don- nées démographiques met- tent en diversité ethnique et religieuse d'un pays qui passe souvent pour homogène. En effet, les périphéries de l'Iran majorité perse. � l'extrême sud-est, le peuplement de l'Iran comprend des baloutches (Province du Sistan

Paris-Sud XI, Université de

342

ENERGIA HIDROEL`ECTRICA Aprofitament de l'energia potencial gravitat`oria de les masses d'aigua  

E-Print Network [OSTI]

del sol. #12;Una quarta part de l'energia solar que incideix sobre la terra es consumeix en lENERGIA HIDROEL`ECTRICA Aprofitament de l'energia potencial gravitat`oria de les masses d molt r`apida. #12;LIMITACIONS I PROBLEMES Podem realment considerar-la una font energia apropiada? Les

Batiste, Oriol

343

Dveloppement de l'usage des TICE et de leur utilisabilit dans les CFA du secteur automobile  

E-Print Network [OSTI]

Développement de l'usage des TICE et de leur « utilisabilité » dans les CFA du secteur automobile formation professionnelle dans le secteur de l'automobile, qui entre dans sa quatrième année. Les effets de systems in professional training; teachers training; diffusion and change management. Le contexte L'automobile

Paris-Sud XI, Université de

344

Dioxine dans les MIOM. Teneurs observees et etude preliminaire de leur potentiel de transfert vers l'environnement  

E-Print Network [OSTI]

2001-81 Dioxine dans les MIOM. Teneurs observees et etude preliminaire de leur potentiel de dioxines/furannes dans les Mächefers d'incineration d'Ordures Menageres valorises en travaux routiers des dioxines/furannes des MIOM valorises en travaux routiers est tres limite. 1. INTRODUCT10N De

Paris-Sud XI, Université de

345

THEOREMES DE BASSE ENERGIE ET REACTIONS PHOTO-PIONIQUES SUR LES NOYAUX J. DELORME, M. ERICSON et A. FIGUREAU  

E-Print Network [OSTI]

. The application of low energy theorems to nuclear photopion reactions in here displayed Various experimental testsTHEOREMES DE BASSE ENERGIE ET REACTIONS PHOTO-PIONIQUES SUR LES NOYAUX J. DELORME, M. ERICSON et A;THEOREMES DE BASSE ENERGIE E T REACTIONS PHOTO-PIONIQUES SUR LES NOYAUX constantes de ccuplage ou facteurs

Boyer, Edmond

346

L'AutRE RIVE : LES IRAnIEnS Aux MIRAtS ARAbES unIS, EntRE VISIbILIt Et  

E-Print Network [OSTI]

OpOLItIquE Les pérégrinations entre les deux côtes, arabe et persane, ont marqué la vie des villes concernées

Boyer, Edmond

347

International Work Placement Case Study: Les Sol de Portecarrero, Almeria, Lara spent nine months in 2011/2012 as an English teaching assistant in Almeria in Spain  

E-Print Network [OSTI]

International Work Placement Case Study: Les Sol de Portecarrero, Almeria, Spain Lara spent nine months in 2011/2012 as an English teaching assistant in Almeria in Spain at Les Sol de Portocarrero

Mumby, Peter J.

348

12.3. Fundaci General de la UIB (FuGUIB) La Fundaci General de la Universitat de les Illes Balears (FuGUIB) s una instituci  

E-Print Network [OSTI]

Balears (FuGUIB) és una institució privada, amb personalitat jurídica pròpia i sense ànim de lucre. Va ser'ha materialitzat en les accions principals següents: -- Millora en el sistema d'il·luminació de les torres del camp

Oro, Daniel

349

le cas de l'isopentane que dans le cas de l'acide carbonique, et cela tient surtout la mthode qui a servi les obtenir, mthode insuf-  

E-Print Network [OSTI]

que l'on puisse même obtenir les harmoniques, qui imposent lenr période au son de biseau plus aigu ou

Paris-Sud XI, Université de

350

reconnat aisment qu'il faut introduire les tei-mes du 2e degr en ( long.) et ( lat.) et adopter une formule 2 tern~ies.  

E-Print Network [OSTI]

'un magnétomètre. Je pouvais ainsi étudier, d'une part, l'aimantation acquise par les dépôts pendant lenr formation

Boyer, Edmond

351

Building Performance Simulation  

E-Print Network [OSTI]

usage simulation. PhD Thesis, Eindhoven University of Technology,usage simulation. PhD thesis, Eindhoven University of Technology,

Hong, Tianzhen

2014-01-01T23:59:59.000Z

352

Implicit and explicit schemes for mass consistency preservation in hybrid particle/finite-volume algorithms for turbulent reactive flows  

SciTech Connect (OSTI)

This work addresses the issue of particle mass consistency in Large Eddy Simulation/Probability Density Function (LES/PDF) methods for turbulent reactive flows. Numerical schemes for the implicit and explicit enforcement of particle mass consistency (PMC) are introduced, and their performance is examined in a representative LES/PDF application, namely the Sandia–Sydney Bluff-Body flame HM1. A new combination of interpolation schemes for velocity and scalar fields is found to better satisfy PMC than multilinear and fourth-order Lagrangian interpolation. A second-order accurate time-stepping scheme for stochastic differential equations (SDE) is found to improve PMC relative to Euler time stepping, which is the first time that a second-order scheme is found to be beneficial, when compared to a first-order scheme, in an LES/PDF application. An explicit corrective velocity scheme for PMC enforcement is introduced, and its parameters optimized to enforce a specified PMC criterion with minimal corrective velocity magnitudes.

Popov, Pavel P., E-mail: ppopov@uci.edu; Pope, Stephen B.

2014-01-15T23:59:59.000Z

353

Extreme Value GARCH modelling with Bayesian Xin Zhao, Les Oxley, Carl Scarrott and Marco Reale  

E-Print Network [OSTI]

Extreme Value GARCH modelling with Bayesian Inference Xin Zhao, Les Oxley, Carl Scarrott and Marco Reale No: 05/2009 #12;2 WORKING PAPER No: 05/2009 Extreme Value GARCH modelling with Bayesian inference, GEV-GARCH, is developed by implementing the GARCH volatility mechanism in these extreme value model

Hickman, Mark

354

Vrification des Automates File Ractifs : un modle pour les systmes ractifs crits en  

E-Print Network [OSTI]

with the reactive language Electre. The behavioral model for Electre programs is the class of Reactive Fiffo, reconnaissabilité, décidabilité. KEY WORDS : Verification, reactive systems, Electre, infinite systems, modelVérification des Automates à File Réactifs : un modèle pour les systèmes réactifs écrits en Electre

Sutre, Grégoire

355

Croissance dmographique, pression foncire et insertion territoriale par les abattis en Guyane franaise  

E-Print Network [OSTI]

(Suriname, Brésil, Haïti, etc.). L'augmentation continue de la population entraîne une pression foncière et provenance notamment du Suriname s'appuient sur les abattis pour avoir un ancrage territorial afin de s neighbours (Surinam, Brazil, Haiti, etc). The continuous increase of population involves land pressure since

Boyer, Edmond

356

En vue de l'obtention de l' HABILITATION A DIRIGER LES RECHERCHES  

E-Print Network [OSTI]

a pr´esent´e mon dossier lors des commissions de l'Universit´e. Je remercie enfin tous les ´etudiants plus long . . ., Marc Cardle, Ga¨el Guennebaud, Anca Alexe, Vincent Forest, Olivier Gourmel, Anthony

Barthe, Loïc

357

Innover en formation: Accompagner autrement les enseignants entrant dans le mtier Mars 2012 L'Harmattan  

E-Print Network [OSTI]

Innover en formation: Accompagner autrement les enseignants entrant dans le métier Mars 2012 L'Harmattan Mars 2012 L'Harmattan renforcé entre l'école, l'université et un « collectif » de formation in situ

Paris-Sud XI, Université de

358

Les processus de surface `a l'echelle globale et leurs interactions avec  

E-Print Network [OSTI]

Mer Océan Atmosphère océanique Biogeochmie La construction d'un mod`ele du syst`eme terre passe par le biomass NPP #12;2.1. Les interactions syst`eme racinaire et humidit´e du sol

Madeleine, Jean-Baptiste

359

Theme: A: Restoration Thematic Session (LeS): ThS_A1: Footprint assessment  

E-Print Network [OSTI]

· A sustainability framework to compare remediation technologies The methodology was developed within a global framework taking into account sustainability principles. Remediation strategies and technologies wereTheme: A: Restoration Thematic Session (LeS): ThS_A1: Footprint assessment SUSTAINABLE REMEDIATION

Boyer, Edmond

360

An analytic formula for Macdonald polynomials Une formule analytique pour les polynomes de Macdonald  

E-Print Network [OSTI]

An analytic formula for Macdonald polynomials Une formule analytique pour les polynâ??omes de Macdonald Michel Lassalle and Michael Schlosser 5 mai 2003 Abstract We give the explicit analytic development of any Jack or Macdonald polynomial in terms of elementary (resp. modified complete) symmetric

Schlosser, Michael

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


361

Le magn)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard  

E-Print Network [OSTI]

Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement Magné8sme ar8ficiel pour un atome isolé poten8el vecteur et la simula8on du magné8sme orbital A(r) V

Dalibard, Jean

362

Le magn)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard  

E-Print Network [OSTI]

Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement Magné8sme ar8ficiel pour un atome isolé (I) #12;Simula8on du magné8sme avec des atomes neutres Le but : réaliser pour

Dalibard, Jean

363

RVERSIBILIT ET IRRVERSIBILIT EN RSONANCE NUCLAIRE THORIE DE LA RELAXATION NUCLAIRE DANS LES LIQUIDES  

E-Print Network [OSTI]

d6duire de 1'6quation de Schrodinger les equations « irréversibles par rapport au temps » qui qui satisfont a la relation (m'l V.L4 Vim) = 8(Em, - Em) fA(m) + (m'lg(A) 1m) (6) (ou A est un op6

Paris-Sud XI, Université de

364

LA GESTION DE RESULTAT PAR LES MONTAGES FINANCIERS DE TITRISATION : LE  

E-Print Network [OSTI]

1 LA GESTION DE RESULTAT PAR LES MONTAGES FINANCIERS DE TITRISATION : LE CAS DES SOCIETES FRAN�AISES COTEES Patrick BOISSELIER Professeur des universités Conservatoire National des Arts et Métiers gestion Centre de Recherche en Ingénierie Financière et Finances publiques (Université de Nice

Paris-Sud XI, Université de

365

Architecture de contrle pour la gestion Contextuelle de tches sur les AUV  

E-Print Network [OSTI]

Architecture de contrôle pour la gestion Contextuelle de tâches sur les AUV A. El Jalaoui, D niveaux, un superviseur global, des superviseurs locaux et enfin un ensemble de modules de gestion des AUV. L'étude se basera sur le cas de l'AUV Taipan. De taille réduite et conçu pour opérer dans des

Boyer, Edmond

366

CONTROLE DE GESTION, CAPACITES DYNAMIQUES ET STRATEGIES EMERGENTES DANS LES ORGANISATIONS ENTREPRENEURIALES  

E-Print Network [OSTI]

CONTROLE DE GESTION, CAPACITES DYNAMIQUES ET STRATEGIES EMERGENTES DANS LES ORGANISATIONS gerald.naro@univ-montp1.fr Résumé : Cette communication porte sur la problématique du contrôle de gestion/exploration (March, 1991). Elle s'appuie sur l'étude de cas d'une entreprise entrepreneuriale. Il s'agissait de

Boyer, Edmond

367

Les POMDP: une solution pour modliser des problmes de gestion adaptative  

E-Print Network [OSTI]

Les POMDP: une solution pour modéliser des problèmes de gestion adaptative en biologie de la conservation, la gestion adaptative est un processus itératif d'amélioration de la gestion par la réduction de l'incertitude à travers une surveillance. La gestion adaptative est l'outil principal pour la

Boyer, Edmond

368

Gestion stratgique des comptences en PME : les enseignements d'une recherche-action  

E-Print Network [OSTI]

1 Gestion stratégique des compétences en PME : les enseignements d'une recherche-action Jean, France Introduction Si pendant longtemps, le besoin des entreprises n'allait pas au-delà d'une gestion préoccupation croissante autour de la gestion des compétences (Défelix, 2003 ; Le Boterf, 2000), de sorte que

Boyer, Edmond

369

Gestion de la Qualit de Service par les Hypercubes dans un Environnement  

E-Print Network [OSTI]

Gestion de la Qualité de Service par les Hypercubes dans un Environnement de Routage Multipoint : Cas des Protocoles PIM-SM et MPLS Mohamed Dafir ECH-CHERIF EL KETTANI Ecole Nationale Supérieure d mettre en °uvre une politique efficace de gestion de la Qualité de Service liée au groupe. Dans cet

Boyer, Edmond

370

Programme de bourses en codirection pour doctorants Les Universits du Kazakhstan cherchent des codirecteurs  

E-Print Network [OSTI]

Programme de bourses en codirection pour doctorants Kazakhstan Les Universités du Kazakhstan quarantaine d'établissements d'enseignement supérieur du Kazakhstan. Ce programme s'inscrit dans une politique outil intéressant pour s'engager dans de nouvelles coopérations. L'Ambassade de France au Kazakhstan

Jeanjean, Louis

371

In: Contraintes environnementales et gouvernance des territoires, pp180-188 Les conflits environnementaux Richards Bay  

E-Print Network [OSTI]

sud Mots-clefs : conflits environnementaux, industrie, pollution, écologistes, ségrégation Email traitement du titane : figure 1). Les grandes industries et leurs sous-traitants (tissu de petites et construction de nombreuses infrastructures dont un waterfront, une marina et un casino. La ville et ses

Boyer, Edmond

372

Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report  

E-Print Network [OSTI]

This Report summarizes the proceedings of the 2013 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt primarily with (1) the techniques for calculating standard model multi-leg NLO and NNLO QCD and NLO EW cross sections and (2) the comparison of those cross sections with LHC data from Run 1, and projections for future measurements in Run 2.

J. Butterworth; G. Dissertori; S. Dittmaier; D. de Florian; N. Glover; K. Hamilton; J. Huston; M. Kado; A. Korytov; F. Krauss; G. Soyez; J. R. Andersen; S. Badger; L. Barzè; J. Bellm; F. U. Bernlochner; A. Buckley; J. Butterworth; N. Chanon; M. Chiesa; A. Cooper-Sarkar; L. Cieri; G. Cullen; H. van Deurzen; G. Dissertori; S. Dittmaier; D. de Florian; S. Forte; R. Frederix; B. Fuks; J. Gao; M. V. Garzelli; T. Gehrmann; E. Gerwick; S. Gieseke; D. Gillberg; E. W. N. Glover; N. Greiner; K. Hamilton; T. Hapola; H. B. Hartanto; G. Heinrich; A. Huss; J. Huston; B. Jäger; M. Kado; A. Kardos; U. Klein; F. Krauss; A. Kruse; L. Lönnblad; G. Luisoni; Daniel Maître; P. Mastrolia; O. Mattelaer; J. Mazzitelli; E. Mirabella; P. Monni; G. Montagna; M. Moretti; P. Nadolsky; P. Nason; O. Nicrosini; C. Oleari; G. Ossola; S. Padhi; T. Peraro; F. Piccinini; S. Plätzer; S. Prestel; J. Pumplin; K. Rabbertz; Voica Radescu; L. Reina; C. Reuschle; J. Rojo; M. Schönherr; J. M. Smillie; J. F. von Soden-Fraunhofen; G. Soyez; R. Thorne; F. Tramontano; Z. Trocsanyi; D. Wackeroth; J. Winter; C-P. Yuan; V. Yundin; K. Zapp

2014-05-05T23:59:59.000Z

373

A review of "La Rochefoucauld par quatre chemins. Les Maximes et leurs ambivalence" by Eric Turcat  

E-Print Network [OSTI]

82 seventeenth-century news Eric Turcat. La Rochefoucauld par quatre chemins. Les Maximes et leurs ambivalence. Biblio 17, v. 206. Tübingen: Gunter Narr Verlag, 2013. 220 pp. ISBN 978-63-8233-6803-8. $65.91. Review by denis d. grélé, university...

Grele, Denis D.

2014-01-01T23:59:59.000Z

374

La conversion lectromcanique directe. 4 fvrier 1999 -ENS Cachan -SEE LES ENTRANEMENTS LECTROMCANIQUES DIRECTS  

E-Print Network [OSTI]

La conversion électromécanique directe. 4 février 1999 - ENS Cachan - SEE LES ENTRA�NEMENTS direct drives represent ultimate simplification of the electromechanical conversion systems because'entraînement électromécanique direct représente la simplification ultime des systèmes de conversion électromécanique d

Paris-Sud XI, Université de

375

Tir--part Les espaces boiss du flanc nord-ouest du mont Royal  

E-Print Network [OSTI]

milieu de la plaine du Saint-Laurent et d'une ville fortement urbanisée, le mont Royal constitue un'arrondissement historique et naturel. Par cette double désignation, il reconnaît que les qualités natu- relles et

376

Influence de la pression hydrostatique sur les spectres de diffusion Brillouin de la thioure  

E-Print Network [OSTI]

Brillouin ne subissent aucune modification lors du passage dans les zones où le paramètre 03B4 se bloque sur apparait une nouvelle phase (VI) qui correspond a la valeur 6 = 1/3, [6, 7J. La structure demeure donc

Paris-Sud XI, Université de

377

IMPACT SUR LES SOLS DES DIOXINES DE MIOM UTILISES EN TECHNIQUE ROUTIERE  

E-Print Network [OSTI]

IMPACT SUR LES SOLS DES DIOXINES DE MIOM UTILISES EN TECHNIQUE ROUTIERE 1 R. BADREDDINE, 1 B teneurs de ces matériaux en PolyChloroDibenzo-para-Dioxines (PCDD) et PolyChloroDibenzoFuranes (PCDF) appelés communément "dioxines" et sur leur risque de transfert vers l'environnement. Une étude de cette

Paris-Sud XI, Université de

378

DOSAGE RADIOMTRIQUE RAPIDE DE L'URANIUM ET DU THORIUM DANS LES MINERAIS COMPLEXES  

E-Print Network [OSTI]

35 A. DOSAGE RADIOM�TRIQUE RAPIDE DE L'URANIUM ET DU THORIUM DANS LES MINERAIS COMPLEXES Par G radio métrique rapide de dosage de l'uranium et du thorium dans des minerais complexes. Elle utilise method for the determination of uranium and thorium in complex ores. We use fundamentally two gamma

Paris-Sud XI, Université de

379

Compensation du mouvement respiratoire dans les images TEP Respiratory motion correction in PET images  

E-Print Network [OSTI]

Compensation du mouvement respiratoire dans les images TEP Respiratory motion correction in PET itérative. Abstract The quality of the Positron Emission Tomography (PET) is currently limited an integrated system to compensate respiratory motion in PET images. It is based on synchronous acquisition

Paris-Sud XI, Université de

380

Toward LES of an ignition sequence in a full helicopter combustor  

E-Print Network [OSTI]

Toward LES of an ignition sequence in a full helicopter combustor M. Boileau , J.B. Mossa , B in a cold and rarified atmosphere is a critical issue for many manu- facturers. In the Vesta combustor machine - where the use of 2048 parallel processors have enabled to start computing on the full combustor

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


381

La nouvelle norme ISO/IEC 29110 pour les trs petits organismes  

E-Print Network [OSTI]

La nouvelle norme ISO/IEC 29110 pour les très petits organismes Claude Y. Laporte, ing., M école d'ingénieurs canadienne lauréate du Trophée ISO 2011 pour l'enseignement supérieur en normalisation · L'École de technologie supérieure est la lauréate du Trophée ISO pourlauréate du Trophée ISO

Laporte, Claude Y.

382

Enseignement inter universitaire a distance avec Internet: M ethodes Num eriques Pour les Equations  

E-Print Network [OSTI]

'apprentissage des sciences. Les outils NTICs permettent de nouvelles approches didactiques: · technologie web + news · dur ee minimale · introduire le sujet Etude individuelle du cours 3h · notes sur papier & web · hyper-liens & interactif Exercices rendus sur le web 3h · assimiler NTIC par contexte · stimulation r eciproque Entre

Jaun, André

383

On the Location of Energy Release and Temperature Pro les along Coronal Loops  

E-Print Network [OSTI]

On the Location of Energy Release and Temperature Pro#12;les along Coronal Loops K. Galsgaard (klaus@mcs.st-and.ac.uk), D. H. Mackay (duncan@mcs.st-and.ac.uk) and E. R. Priest (eric@mcs.st-and.ac.uk Abstract. Several mechanisms have been suggested to contribute to the heat- ing of the solar corona, each

Mackay, Duncan

384

Wave turbulence and Bose-Einstein condensates Fluctuations turbulentes dans les condensats de Bose-Einstein  

E-Print Network [OSTI]

Wave turbulence and Bose-Einstein condensates Fluctuations turbulentes dans les condensats de Bose-Einstein condensates are considered. A statistical approach is presented following[1] to describe the stationary regime shows rapid oscillation of the condensate. R#19;esum#19;e Le comportement asymptotique des

385

DNS AND LES WITH STOCHASTIC MODELLING OF SUBGRID ACCELERATION APPLIED TO SOLID PARTICLES IN A HIGH  

E-Print Network [OSTI]

), these phenomena were coupled with particle acceler- ation statistics. In our paper, such statisticsDNS AND LES WITH STOCHASTIC MODELLING OF SUBGRID ACCELERATION APPLIED TO SOLID PARTICLES IN A HIGH Ecully, F-69134, France mikhael.gorokhovski@ec-lyon.fr ABSTRACT Inertial particle acceleration statistics

Boyer, Edmond

386

Strodes sexuels et diagnostics de gestation chez les bovins — Tests en ferme  

E-Print Network [OSTI]

on the test pad compared to that on the control. There is a good agreement between the results of the RIA similar to that found by RIA. This kind of test used by the farmer, the Al technician or the clinicianStéroïdes sexuels et diagnostics de gestation chez les bovins — Tests en ferme M. THIBIER

Boyer, Edmond

387

La dmarche Eco conception pour les bogies d'ALSTOM Transport  

E-Print Network [OSTI]

and the sustainable development through its Eco design approach. This allows managing the environmental risks, soil and for humans. This article provides an outline the approach of ALSTOM Transport on the basisLa démarche Eco conception pour les bogies d'ALSTOM Transport Julie LANDI (Ingénieur Eco conception

Boyer, Edmond

388

DNS and LES of two-phase flows with cavitation  

E-Print Network [OSTI]

We report on recent progress in the physical and numerical modeling of compressible two-phase flows that involve phase transition between the liquid and gaseous state of the fluid. The high-speed dynamics of cavitation bubbles is studied in well-resolved simulations (DNS) with a sharp-interface numerical model on a micro scale. The underlying assumption of the employed evaporation/condensation model is that phase change occurs in thermal non-equilibrium and that the associated timescale is larger than that of the wave dynamics. Results for the collapse of a spherical vapor bubble close to a solid wall are discussed for three different bubble-wall configurations. The major challenge for such numerical investigations is to accurately reproduce the dynamics of the interface between liquid and vapor during the entire collapse process, including the high-speed dynamics of the late stages, where compressibility of both phases plays a decisive role. Direct interface resolving simulations are intractable for real wor...

Hickel, Stefan

2014-01-01T23:59:59.000Z

389

Parameterization and Analysis of 3-D Solar Radiative Transfer in Clouds: Final Report  

SciTech Connect (OSTI)

This document reports on the research that we have done over the course of our two-year project. The report also covers the research done on this project during a 1 year no-cost extension of the grant. Our work has had two main, inter-related thrusts: The first thrust was to characterize the response of stratocumulus cloud structure and dynamics to systematic changes in cloud infrared radiative cooling and solar heating using one-dimensional radiative transfer models. The second was to couple a three-dimensional (3-D) solar radiative transfer model to the Large Eddy Simulation (LES) model that we use to simulate stratocumulus. The purpose of the studies with 3-D radiative transfer was to examine the possible influences of 3-D photon transport on the structure, evolution, and radiative properties of stratocumulus. While 3-D radiative transport has been examined in static cloud environments, few studies have attempted to examine whether the 3-D nature of radiative absorption and emission influence the structure and evolution of stratocumulus. We undertook this dual approach because only a small number of LES simulations with the 3-D radiative transfer model are possible due to the high computational costs. Consequently, LES simulations with a 1-D radiative transfer solver were used in order to examine the portions of stratocumulus parameter space that may be most sensitive to perturbations in the radiative fields. The goal was then to explore these sensitive regions with LES using full 3-D radiative transfer. Our overall goal was to discover whether 3-D radiative processes alter cloud structure and evolution, and whether this may have any indirect implications for cloud radiative properties. In addition, we collaborated with Dr. Tamas Varni, providing model output fields for his attempt at parameterizing 3-D radiative effects for cloud models.

Jerry Y. Harrington

2012-09-21T23:59:59.000Z

390

Web Interface Call Simulator  

E-Print Network [OSTI]

Web Interface Call Simulator Stage Description Web Interface for VoIP Call Simulator Net) Version 1.0 ­ 3/09/2012 Page 1 of 6 #12;Web Interface Call Simulator Version 1.0 ­ 3/09/2012 Page 2 of 6 #12;Web Interface Call Simulator Document Control Version Date Notes 1.0 25/8/2012 Reviewed

Ernst, Damien

391

Modliser et simuler l'amnagement nergtique d'un territoire par les systmes multi-agents  

E-Print Network [OSTI]

Réunion se situe au centre du projet GERRIi (qui est à la fois l'acronyme de Green Energy Revolution

Paris-Sud XI, Université de

392

Dynamic Positioning Simulator Dynamic Positioning Simulator  

E-Print Network [OSTI]

Simulator 5 / 24 #12;Dynamic Positioning Simulator Dynamic Positioning Why Dynamic Positioning? Advantages Dynamic Positioning: No tugboats needed; Offshore set-up is quick; Power saving; Precision situations more on Ship: Wind Force Fw = 1 2 air V 2 rw CXw (rw )AT 1 2 air V 2 rw CYw (rw )AL Mw = 1 2 air V 2 rw CMw (rw

Vuik, Kees

393

Progress in sub-grid scale modeling of shock-turbulence interaction  

SciTech Connect (OSTI)

The authors report on progress in the development of sub grid scale (SGS) closure relationships for the unresolved motion scales in compressible large eddy simulations (LES). At present they are refining the SGS model and overall LES procedure to include: a linearized viscoelastic model for finite thickness shock distortions and shocked turbulence field response; multiple scale asymptotic considerations to improve predictions of average near-wall surface behavior; and a spectral statistical model simulating the effects of high wave number stochastic feed-back from the unresolved SGS nonlinear motion influences on the explicitly resolved grid scale motions. Predicted amplification levels, modal energy partition, shock translational to turbulence kinetic energy transfer, and viscoelastic spatio-temporal response of turbulence to shock interaction are examined in comparison with available experimental evidence. Supplemental hypersonic compressible turbulence experimental information is developed from sub nanosecond interval pulsed shadowgraph evidence of laser impulse generated hypervelocity shocks interacting with intense, previously developed and carefully characterized initial turbulence. Accurate description of the influence of shock-turbulence interactions is vital for predicting their influence on: Supersonic/hypersonic flow field analysis, aerodynamic design, and aerostructural materials selection. Practical applications also include interior supersonic combustion analysis and combustion chamber design. It is also the essential foundation for accurately predicting the development and evolution of flow-field generated thermal and electromagnetic radiation important to hypersonic flight vehicle survivability, detection and communication.

Buckingham, A.C. [Lawrence Livermore National Lab., CA (United States). Center for Advanced Fluid Dynamics Applications; Grun, J. [Naval Research Lab., Washington, DC (United States). Plasma Physics Div.

1994-12-01T23:59:59.000Z

394

INFLUENCE DE LA TEMPRATURE SUR LES RSULTATS DE L'ANTIBIOGRAMME PRATIQU PAR LA MTHODE DE DIFFUSION  

E-Print Network [OSTI]

readings of the zones of inhibition were done, after 24 and 48 h of incubation. Minimal inhibitory'administration prati- quement exclusive, la voie orale, et que seuls les élevages de salmoniculture intensive se

Paris-Sud XI, Université de

395

Les pouvoirs urbains Tunis la fin de l'poque ottomane : la persistance de l'Ancien rgime  

E-Print Network [OSTI]

pleinement les pouvoirs urbains afin de reprendre la main dans le jeu des factions de notables face aux ne sont pas parvenus à intégrer tout à fait le jeu des factions de notables dans le fonctionnement

Paris-Sud XI, Université de

396

Vers un management des amis sur les rseaux socionumriques ? Usage et appropriation sur Facebook, Skyrock et MySpace  

E-Print Network [OSTI]

sites tools, like friends' lists, recommendation agents, search engines and reporting facilities. Elles renvoient, d'une part, à la nature des liens sur les réseaux socionumériques (Rsn), qualifiés d

Boyer, Edmond

397

Comptes Rendus des JNC 17 -Poitiers 2011 Caractrisation exprimentale de l'interface fil/matrice dans les composites  

E-Print Network [OSTI]

/matrice dans les composites chanvre/époxy Experimental characterisation of yarn/matrix interface in hemp, the link between an impregnated hemp yarn and the epoxy matrix has been investigated. The micromechanical

Paris-Sud XI, Université de

398

NOTE SUR LES EFFETS DE L'INFUSION PERMANENTE D'UN MLANGE D'ACIDES GRAS VOLATILS DANS LE  

E-Print Network [OSTI]

NOTE SUR LES EFFETS DE L'INFUSION PERMANENTE D'UN M�LANGE D'ACIDES GRAS VOLATILS DANS LE RUMEN DU problèmes techniques : infusion permanente et prolongée, dans le rumen, de quantités d'acides gras volatils début de l'infusion, les veaux étaient âgés d'environ 4 mois et pesaient respectivement 95 et 80 kg

Paris-Sud XI, Université de

399

Protolyse in vitro de casine et de gluten par les enzymes pancratiques  

E-Print Network [OSTI]

Protéolyse in vitro de caséine et de gluten par les enzymes pancréatiques Marie-Claire CAMUS, J. C de celle de la pepsine. Dans une étude antérieure in vitro (Camus et al., 1973), nous observions pour et le gluten disparaissaient avec la pepsine (Camus et Sautier, 1972) et diminuaient avec la trypsine

Paris-Sud XI, Université de

400

De l'adolescence errante. Variations sur les non-lieux de nos modernits  

E-Print Network [OSTI]

et santé (sous la dir. de C. Sabatier et O. Douville), Paris, L'Harmattan, collection « Espaces altérités » (sous la dir. de O. Douville et de Cl. Wacjman), Paris, L'Harmattan, 2003 Les méthodes cliniques), Paris, L'Harmattan, 2005 Olivier Douville a aussi publié des articles dans des revues scientifiques en

Paris-Sud XI, Université de

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


401

La pollution marine est gnralement provoque par les eaux uses, d'origines  

E-Print Network [OSTI]

La pollution marine est généralement provoquée par les eaux usées, d'origines domestiques long des bassins-versants qui débouchent sur la mer. Pollution marine 16 Métaux Ils présentent trois indique généralement l'existence d'autres sources de pollution. © Ssuaphoto / Dreamstime.com © Uatp1

402

Exil ou des-exil ? : les retours impossibles des personnages de Fernando Ansa et Andrea Blanqu  

E-Print Network [OSTI]

allá. He aquí una proposición simple para empezar2 . Depuis la fin du XIXème , l'histoire de l'Uruguay est celle d'incessants allers/retours. Entre 1830 et 19003 , les pays du Río de la Plata, et l'Uruguay nacimiento del Uruguay moderno en la segunda mitad del siglo XIX, Red Académica Avanzada del Uruguay RAU2

Paris-Sud XI, Université de

403

Le magn)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard  

E-Print Network [OSTI]

Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement Magné8sme ar8ficiel et interac8ons : condensats en rota8on #12;Magné8sme dans une assemblée de par8cule en interac8on

Dalibard, Jean

404

Le magn)sme ar)ficiel pour les gaz d'atomes froids  

E-Print Network [OSTI]

Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement #12;Thème général du cours : le magné?sme = q v B = 0 perdu d'avance ? pas forcément... On peut émuler ce magné?sme par

Dalibard, Jean

405

TUDES EN VUE DE DTERMINER LES BESOINS EN ACIDES AMINS SOUFRS.  

E-Print Network [OSTI]

(BENNET et coll, 1942; POMER1BNZE et Coll, 1959) et le Poulet (MILLER et coll, ig65). BENNET et To fins anaboliques (BENNET, 1941; NJAA, 1962) à l'encontre de la méthionine sul- foxide produite par fixation d'un seul oxygène (BENNET, ig39) ! Dans les essais de BENNET et TOENNIES, la supplémentation de la

Paris-Sud XI, Université de

406

Les pritextes pistolaires, le cas des Cartas marruecas de Jos Cadalso (1774)  

E-Print Network [OSTI]

les hispanistes. Il appartient au genre que Frédéric Calas qualifie de roman persan, c'est-à-dire un Lettres persanes, mais il est loin d'en être une «pâle imitation» comme l'avait affirmé un certain, Nathan, 1996, Coll. 128, p. 16. 2François Lopez, «De las Lettres persanes a las Cartas marruecas

Paris-Sud XI, Université de

407

L'URANIUM ET LES ARMES L'URANIUM APPAUVRI. Pierre Roussel*  

E-Print Network [OSTI]

L'URANIUM ET LES ARMES � L'URANIUM APPAUVRI. Pierre Roussel* Institut de Physique Nucléaire, CNRS massivement dans la guerre du Golfe, des obus anti- chars ont été utilisés, avec des "charges d'uranium, avec une charge de 300 g d'uranium et tiré par des avions, l'autre de 120 mm de diamètre avec une

Boyer, Edmond

408

LES DIFFICULTES RENCONTREES LORS DE LA MISE EN PLACE D'UN SYSTEME HSE  

E-Print Network [OSTI]

98-86 LES DIFFICULTES RENCONTREES LORS DE LA MISE EN PLACE D'UN SYSTEME HSE SUR DE PETITS SITES INDUSTRIELS > Introduction Le système de management de l'hygiène, de la sécurité et de l'environnement que. Un référentiel HSE a été calqué sur la structure de l'ISO 14001, afin de bénéficier de la

Paris-Sud XI, Université de

409

Les parties prenantes au coeur du business model Berthelot Eric, Coissard Steven & Kachour Maher  

E-Print Network [OSTI]

Les parties prenantes au coeur du business model Berthelot Eric, Coissard Steven & Kachour Maher prenantes au coeur du business model Résumé L'objectif de ce papier est de mettre la théorie des parties prenantes au coeur du débat sur le concept du business model. Ces dernières ont été souvent ignorées ou

Paris-Sud XI, Université de

410

UN THEOR`EME SUR LES ACTIONS DE GROUPES DE DIMENSION INFINIE  

E-Print Network [OSTI]

UN TH´EOR`EME SUR LES ACTIONS DE GROUPES DE DIMENSION INFINIE JACQUES F´EJOZ AND MAURICIO GARAY R qui recourent `a un th´eor`eme d'inversion locale (e.g. [3, 5] ou [4, Th´eor`eme 4.2.5]), par l´ee par Kolmogo- rov et Arnold dans leur d´emonstration du th´eor`eme des tores invariants [2, 1]. Le th´eor

Paris-Sud XI, Université de

411

Rcolte des piments par les femmes destination du march national, pour la production de harissa  

E-Print Network [OSTI]

notamment. La plaine de Kairouan abrite des cultures irriguées très diversifiées : maraîchage, arboriculture et fourrage destinés au marché national et international. Le Merguellil et la plaine de Kairouan En'exploiter les eaux de la retenue pour développer l'irrigation de la plaine de Kairouan, en aval. Très vite, du

412

Informations sur le(s) auteur(s) Prnom, NOM et  

E-Print Network [OSTI]

ici comment il a envisagé les différentes études à mener autour du compositeur Louis Grénon (1734 Grénon (1734-1769). Originaire de Saintes, il occupa successivement plusieurs postes, comme beaucoup de musiciens de son temps. Maître de chapelle aux cathédrales du Puy-en-Velay puis de Clermont, il regagna

Boyer, Edmond

413

LES TYROSINASES CUTANES CHEZ LE RAT. MODIFICATIONS AU COURS DU DVELOPPEMENT  

E-Print Network [OSTI]

LES TYROSINASES CUTAN�ES CHEZ LE RAT. MODIFICATIONS AU COURS DU D�VELOPPEMENT ET PENDANT LE CYCLE Sciences appliquées, 69621 Villeurbanne 1 1 R�SUM� Nous avons effectué l'étude des tyrosinases de la peau chez le Rat. Ces tyrosinases sont mises en évidence, après électrophorèse par réaction de Dopa sur gel

Boyer, Edmond

414

Action de l'manation du radium sur les sels de thorium Par HERCHFINKEL  

E-Print Network [OSTI]

417 Action de l'émanation du radium sur les sels de thorium Par HERCHFINKEL [Faculté des Sciences'une solution d'azotate de thorium abandonnée a elle-même pendant plusieurs mois dégage une cer- taine quantité'on fait agir une forte quantité d'émanation de radium sur le même sPl de thorium il se produit en- core

Paris-Sud XI, Université de

415

Les Houches 2013: Physics at TeV Colliders: New Physics Working Group Report  

E-Print Network [OSTI]

We present the activities of the "New Physics" working group for the "Physics at TeV Colliders" workshop (Les Houches, France, 3--21 June, 2013). Our report includes new computational tool developments, studies of the implications of the Higgs boson discovery on new physics, important signatures for searches for natural new physics at the LHC, new studies of flavour aspects of new physics, and assessments of the interplay between direct dark matter searches and the LHC.

G. Brooijmans; R. Contino; B. Fuks; F. Moortgat; P. Richardson; S. Sekmen; A. Weiler; A. Alloul; A. Arbey; J. Baglio; D. Barducci; A. J. Barr; L. Basso; M. Battaglia; G. Bélanger; A. Belyaev; J. Bernon; A. Bharucha; O. Bondu; F. Boudjema; E. Boos; M. Buchkremer; V. Bunichev; G. Cacciapaglia; G. Chalons; E. Conte; M. J. Dolan; A. Deandrea; K. De Causmaecker; A. Djouadi; B. Dumont; J. Ellis; C. Englert; A. Falkowski; S. Fichet; T. Flacke; A. Gaz; M. Ghezzi; R. Godbole; A. Goudelis; M. Gouzevitch; D. Greco; R. Grober; C. Grojean; D. Guadagnoli; J. F. Gunion; B. Herrmann; J. Kalinowski; J. H. Kim; S. Kraml; M. E. Krauss; S. Kulkarni; S. J. Lee; S. H. Lim; D. Liu; F. Mahmoudi; Y. Maravin; A. Massironi; L. Mitzka; K. Mohan; G. Moreau; M. M. Mühlleitner; D. T. Nhung; B. O'Leary; A. Oliveira; L. Panizzi; D. Pappadopulo; S. Pataraia; W. Porod; A. Pukhov; F. Riva; J. Rojo; R. Rosenfeld; J. Ruiz-Álvarez; H. Rzehak; V. Sanz; D. Sengupta; M. Spannowsky; M. Spira; J. Streicher; N. Strobbe; A. Thamm; M. Thomas; R. Torre; W. Waltenberger; K. Walz; A. Wilcock; A. Wulzer; F. Würthwein; C. Wymant

2014-05-07T23:59:59.000Z

416

Absorption du rayonnement 12 et 8 millimtres par les vapeurs de propane sous pression  

E-Print Network [OSTI]

Absorption du rayonnement 12 et 8 millimètres par les vapeurs de propane sous pression A. Battaglia des pertes diélectriques (03B5") présentées par le propane gazeux aux fréquences de 24 et 36 GHz, à la Birnbaum. Abstract. 2014 Experimental study of dielectric losses (03B5") presented by gaseous propane

Boyer, Edmond

417

Planar Richtmyer-Meshkov instabilities and transition to turbulence  

SciTech Connect (OSTI)

Extensive recent work has demonstrated that predictive under-resolved simulations of the velocity fields in turbulent flows are possible without resorting to explicit subgrid models. When using a class of physics-capturing high-resolution finite-volume numerical algorithms. This strategy is denoted implicit large eddy simulation (ILES, MILES). The performance of ILES in the substantially more difficult problem of under-resolved material mixing driven by under-resolved velocity fields and initial conditions (ICs) is a focus of the present work. Progress is presented in analyzing the effects of IC combined spectral content and thickness parametrizations. In the large eddy simulation (LES). the large energy containing structures are resolved, the smaller, presumably more isotropic, structures are filtered out, and effects of subgrid scales (SGS) are modeled. ILES effectively addresses the seemingly insurmountable issues posed to LES by under-resolution. by relying on the use of SGS modeling and filtering provided implicitly by a class of physics capturing numerics; extensive verification and validation in areas of engineering. geophysics. and astrophysics has been reported. In many areas of interest such as. inertial confinement fusion. understanding the collapse of the outer cores of supernovas. and supersonic combustion engines, vorticity is introduced at material interfaces by the impulsive loading of shock waves. and turbulence is generated via Richtmyer-Meshkov instabilities (RMI). Given that ILES is based on locally-adaptive, non-oscillatory. finite-volume methods it is naturally suited to emulate shock physics. The unique combination of shock and turbulence emulation capabilities supports direct use of ILES as an effective simulation anzatz for RMI. Here, we further test this approach using a particular strategy based on a nominally-inviscid, Schmidt number {approx} 1, simulation model that uses the LANL RAGE code to investigate planar RMI. Issues of initial material interface characterization and modeling difficulties, and effects of IC resolved spectral content on transitional and late-time turbulent mixing were examined in our previous work. The focus here is to carry out a systematic analysis of effects of combined IC spectral content and thickness.

Grinstein, Fernando F [Los Alamos National Laboratory; Gowardhan, Akshay [Los Alamos National Laboratory; Ristorcelli, Ray [Los Alamos National Laboratory

2011-01-21T23:59:59.000Z

418

Dans le Jrid1, rgion d'oasis du Sud-Ouest tunisien, un sentiment de crise qui concerne les ressources foncires et aquifres est sensible. Cette  

E-Print Network [OSTI]

Battesti anthropologue 10/05/05 17:40 Page 201 #12;cas. En général, la référence est centrée sur sa propre origine spatiale (« en France, les rendements... » ou « dans le nord de la Tunisie, les fellahs sont les discours locaux que scienti- fiques deux registres de causes, soit le foncier, soit l'eau d

Paris-Sud XI, Université de

419

Voir Naples et pourrir. L'origine de la contamination chez les alchimistes (XVIe Vronique Adam, Universit Toulouse II Le Mirail  

E-Print Network [OSTI]

traités savants de l'antiquité greco-romaine et du monde arabo-persan, comme sur les textes religieux et

Boyer, Edmond

420

E. VILLARI. 2014 Sulla propriet scaricatrice prodotta pei gas dall'uraninite (Sur la proprit de dcharge produite dans les gaz par l'uranite). -  

E-Print Network [OSTI]

les expériences de M. H. Becquerel sur l'uranium, le nitrate d'urane, le sulfate double d'uranyle et

Paris-Sud XI, Université de

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


421

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

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

Data from a 1152X760X1280 direct numerical simulation (DNS) [N. J. Mueschke and O. Schilling, Phys. Fluids 21, 014106 (2009)] of a transitional Rayleigh-Taylor mixing layer modeled after a small Atwood number water channel experiment is used to comprehensively investigate the structure of mean and turbulent transport and mixing. The simulation had physical parameters and initial conditions approximating those in the experiment. The budgets of the mean vertical momentum, heavy-fluid mass fraction, turbulent kinetic energy, turbulent kinetic energy dissipation rate, heavy-fluid mass fraction variance, and heavy-fluid mass fraction variance dissipation rate equations are constructed using Reynolds averaging applied to the DNS data. The relative importance of mean and turbulent production, turbulent dissipation and destruction, and turbulent transport are investigated as a function of Reynolds number and across the mixing layer to provide insight into the flow dynamics not presently available from experiments. The analysis of the budgets supports the assumption for small Atwood number, Rayleigh/Taylor driven flows that the principal transport mechanisms are buoyancy production, turbulent production, turbulent dissipation, and turbulent diffusion (shear and mean field production are negligible). As the Reynolds number increases, the turbulent production in the turbulent kinetic energy dissipation rate equation becomes the dominant production term, while the buoyancy production plateaus. Distinctions between momentum and scalar transport are also noted, where the turbulent kinetic energy and its dissipation rate both grow in time and are peaked near the center plane of the mixing layer, while the heavy-fluid mass fraction variance and its dissipation rate initially grow and then begin to decrease as mixing progresses and reduces density fluctuations. All terms in the transport equations generally grow or decay, with no qualitative change in their profile, except for the pressure flux contribution to the total turbulent kinetic energy flux, which changes sign early in time (a countergradient effect). The production-to-dissipation ratios corresponding to the turbulent kinetic energy and heavy-fluid mass fraction variance are large and vary strongly at small evolution times, decrease with time, and nearly asymptote as the flow enters a self-similar regime. The late-time turbulent kinetic energy production-to-dissipation ratio is larger than observed in shear-driven turbulent flows. The order of magnitude estimates of the terms in the transport equations are shown to be consistent with the DNS at late-time, and also confirms both the dominant terms and their evolutionary behavior. These results are useful for identifying the dynamically important terms requiring closure, and assessing the accuracy of the predictions of Reynolds-averaged Navier-Stokes and large-eddy simulation models of turbulent transport and mixing in transitional Rayleigh-Taylor instability-generated flow.

Schilling, Oleg [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Mueschke, Nicholas J. [Texas A and M Univ., College Station, TX (United States)

2010-10-18T23:59:59.000Z

422

Whole Building Energy Simulation  

Broader source: Energy.gov [DOE]

Whole building energy simulation, also referred to as energy modeling, can and should be incorporated early during project planning to provide energy impact feedback for which design considerations...

423

From Strings to the LHC. Les Houches Lectures on String Phenomenology  

E-Print Network [OSTI]

These notes are based on lectures given at the Les Houches Summer School in 2011, which was centered on the general topic "Theoretical Physics to face the challenge of LHC". In these lectures I reviewed a number of topics in the field of String Phenomenology, focusing on orientifold/F-theory models yielding semi-realistic low-energy physics. The emphasis was on the extraction of the low-energy effective action and the possible test of specific models at LHC. These notes are a brief summary, appropriately updated, of some of the main topics covered in the lectures.

Luis E. Ibanez

2012-04-24T23:59:59.000Z

424

Microsoft PowerPoint - wrf_les_2007_zhu.ppt [Compatibility Mode]  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces andMapping RichlandScatteringWater Vapor Continuum in1 Work ProposalLES

425

Simulation Supported Decision Making  

E-Print Network [OSTI]

.S. Navy Nuclear Program · Decades of dynamic operations of hundreds of nuclear power plants withoutSimulation Supported Decision Making Gene Allen Naval Surface Warfare Center Carderock Division SI: TO PASS ON WHAT I KNOW on SIMULATION · CAREER FOCUS: HOW TO USE COMPUTERS TO DO HELP MAKE BETTER DECISIONS

426

Radiation detector spectrum simulator  

DOE Patents [OSTI]

A small battery operated nuclear spectrum simulator having a noise source nerates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith generates several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

Wolf, Michael A. (Los Alamos, NM); Crowell, John M. (Los Alamos, NM)

1987-01-01T23:59:59.000Z

427

Radiation detector spectrum simulator  

DOE Patents [OSTI]

A small battery operated nuclear spectrum simulator having a noise source generates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith to generate several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

Wolf, M.A.; Crowell, J.M.

1985-04-09T23:59:59.000Z

428

Atmos. Chem. Phys., 7, 697712, 2007 www.atmos-chem-phys.net/7/697/2007/  

E-Print Network [OSTI]

. This work is licensed under a Creative Commons License. Atmospheric Chemistry and Physics Characterization of the 222 Rn family turbulent transport in the convective atmospheric boundary layer J.-F. Vinuesa and S atmospheric boundary layers (CBL) is inves- tigated. Large eddy simulation is used to simulate their dis

Meskhidze, Nicholas

429

Subgrid-scale model for the temperature fluctuations in reacting hypersonic turbulent flows  

E-Print Network [OSTI]

Subgrid-scale model for the temperature fluctuations in reacting hypersonic turbulent flows M. Pino fluctuations for use in large-eddy simulations of turbulent, reacting hypersonic flows. The proposed model uses, a greater understand- ing of turbulent hypersonic flows is needed. Direct numerical simulations DNS

Martín, Pino

430

Jeffrey C. Harris and Stephan T. Grilli Department of Ocean Engineering, University of Rhode Island  

E-Print Network [OSTI]

for the simulation of wave-induced sediment transport. Our approach is a one- way coupling of an inviscid flow model and a dynamic Smagorinsky subgrid scale model. After validating the model hydrodynamic predictions, we simulate cases are presented. KEY WORDS: Computational Fluid Dynamics; Hybrid model cou- pling; Large eddy

Grilli, Stéphan T.

431

Communiqu de presse 08 aot 2013 Dcouverte au Maroc d'une tortue marine gante dans les dpts  

E-Print Network [OSTI]

Communiqué de presse ­ 08 août 2013 Découverte au Maroc d'une tortue marine géante dans les dépôts bouyai - découverte dans les dépôts de la fin du Crétacé des Phosphates du Maroc (Bassin des Oulad Abdoun recherche « Phosphapal » visant à l'étude des faunes de Vertébrés des Phosphates du Maroc, signée entre le

432

La dynamique de communication entre Hydro-Qubec et les Innus dans le cadre du projet de la Romaine  

E-Print Network [OSTI]

La dynamique de communication entre Hydro-Québec et les Innus dans le cadre du projet de la Romaine Fortin, 2014 #12;#12;iii Résumé Le mémoire porte sur la dynamique de communication entre Hydro-Québec et, composées dInnus et de représentants dHydro-Québec, et dont le rôle est de gérer les fonds. De plus, le

433

TP HTML -CSS -PHP -POSTGRESQL Le but de ce TP est de complter les fichiers fournis pour raliser une micro application interactive qui  

E-Print Network [OSTI]

TP HTML - CSS - PHP - POSTGRESQL Le but de ce TP est de compléter les fichiers fournis pour afficher (fichiers .html ou .php). · Enregistrez dans votre home l'archive contenant les fichiers du TP à partir de http://perso.limsi.fr/annlor/enseignement/ensiie/pw/tpPHP.tar · Extrayez de l'archive le

Ligozat, Anne-Laure

434

Mondialisation et territoires religieux dans les espaces tropicaux Effets et enjeux de la mondialisation sur la gographie mondiale de l'hindouisme  

E-Print Network [OSTI]

'émigration hindoue peuvent être classés en cinq phases: les mouvements de population antiques et précoloniaux ; les'abolition de l'esclavage4 (vers l'Ile Maurice, La Réunion, Guyana, le Surinam, la Guyane, la Martinique

Paris-Sud XI, Université de

435

FOURNET, M. & BEDIN, V. (1998). L'ingnierie de formation entre traditionalisme et modernisme ; les nouvelles formes de formation continue vues par des dirigeants de PME-PMI. Formation Emploi, n 63, 43-  

E-Print Network [OSTI]

; les nouvelles formes de formation continue vues par des dirigeants de PME-PMI. Formation Emploi, n° 63 modernisme Les nouvelles formes de formation continue vues par des dirigeants de PME-PMI Michel Fournet et

Boyer, Edmond

1998-01-01T23:59:59.000Z

436

14.2. Fundaci General de la UIB (FuGUIB) La Fundaci General de la Universitat de les Illes Balears (FuGUIB) s una instituci privada, amb  

E-Print Network [OSTI]

Balears (FuGUIB) és una institució privada, amb personalitat jurídica pròpia i sense ànim de lucre. Va ser'ha materialitzat en les accions principals següents: -- Reparació integral de les pistes de pàdel i instal·lació de

Oro, Daniel

437

2010 et au-del : les perspectives d'avenir pour l'INSHS L'anne 2009 s'est acheve dans une atmosphre que chacun s'ac-  

E-Print Network [OSTI]

Samuel Lussac, Technip, 2009 Le Caucase du Sud se re- trouve sous les projec- teurs, pris au milieu d

Canet, Léonie

438

Energetics of Marine Turbine Arrays - Extraction, Dissipation and Diminution  

E-Print Network [OSTI]

A two-scale modelling approach is discussed to predict the performance and energetics of a large number (more than a few hundred) of marine turbines installed as a power farm in a general coastal environment. The kernel of this approach is that the outer (coastal-scale) model/simulation is to assess the reduction of flow passing through a given farm area as a function of the increase of head loss across the farm, whereas the inner (device-scale) model/simulation uses this function to account for the (otherwise unknown) effect of coastal dynamics for that farm site. Large-eddy simulations (LES) of periodic open channel flow (with a porous plate model representing turbines) are then presented as the device-scale part of such a two-scale model of large marine turbine arrays. Results demonstrate how the energetics of turbine arrays (i.e. extraction, dissipation and diminution of energy in the entire farm area) may change depending on the characteristics of the farm site, array configuration and operating conditio...

Nishino, Takafumi

2013-01-01T23:59:59.000Z

439

Rfrence de l'article : Prendre la religion de l'Autre. Lorsque les sentiments amoureux se mlent aux choix religieux , in A.S. Lamine, F Lautman, S. Mathieu (dir.), La religion de  

E-Print Network [OSTI]

pluralité religieuse entre concurrence et reconnaissance, Paris, L'Harmattan, coll. « religions en questions », 2008, pp. 57-67. http://www.editions-harmattan.fr/ PRENDRE LA RELIGION DE L'AUTRE. LORSQUE LES CHOIX instrumentales (pour 1 Stefano Alliévi, Les convertis à l'Islam : les nouveaux musulmans d'Europe, Paris, l'Harmattan

Paris-Sud XI, Université de

440

L'agriculture familiale se dfinit par le recours quasi-exclusif du travail familial, sans sa-laris permanents,et par des interrelations fortes entre les agriculteurs et leur exploitation.Le  

E-Print Network [OSTI]

1 #12;L'agriculture familiale se définit par le recours quasi-exclusif à du travail familial, sans agricultures familiales. Avec ses 500 millions d'exploitations, elles font vivre 2,6 milliards de personnes et, les agricultures familiales sont présentes sur tous les continents et dans tous les écosystèmes. Cette

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


441

Theory Modeling and Simulation  

SciTech Connect (OSTI)

Los Alamos has a long history in theory, modeling and simulation. We focus on multidisciplinary teams that tackle complex problems. Theory, modeling and simulation are tools to solve problems just like an NMR spectrometer, a gas chromatograph or an electron microscope. Problems should be used to define the theoretical tools needed and not the other way around. Best results occur when theory and experiments are working together in a team.

Shlachter, Jack [Los Alamos National Laboratory

2012-08-23T23:59:59.000Z

442

Xyce parallel electronic simulator.  

SciTech Connect (OSTI)

This document is a reference guide to the Xyce Parallel Electronic Simulator, and is a companion document to the Xyce Users' Guide. The focus of this document is (to the extent possible) exhaustively list device parameters, solver options, parser options, and other usage details of Xyce. This document is not intended to be a tutorial. Users who are new to circuit simulation are better served by the Xyce Users' Guide.

Keiter, Eric Richard; Mei, Ting; Russo, Thomas V.; Rankin, Eric Lamont; Schiek, Richard Louis; Thornquist, Heidi K.; Fixel, Deborah A.; Coffey, Todd Stirling; Pawlowski, Roger Patrick; Santarelli, Keith R.

2010-05-01T23:59:59.000Z

443

Traitements de la langue naturelle pour la RI Dans cette section, on discute les deux problmes suivants  

E-Print Network [OSTI]

essentiellement effectué dans New Mexico State University (CRL). L'idée est aussi d'exploiter la relation entre un common in Britain. Soit la phrase suivante dans un texte: There was ash from the coal fire. On veux contexte (sauf les stopwords): coal, fire: Coal: AS black mineral which is dug from the earth, which can

Nie, Jian-Yun

444

LES REPRESENTATIONS DE L'ACCOMPAGNEMENT ET DE L'INSERTION DANS LE RESEAU DES MISSIONS LOCALES  

E-Print Network [OSTI]

2008 dans la collection « Le travail du social » dirigée par Alain Vilbrod, aux éditions l'Harmattan Il'insertion ?, Les éditions l'harmattan (Ed.) (2008) 276" #12;2 2 un espace d'attente. Ils sont nommés « chargés d

Paris-Sud XI, Université de

445

http://www.persee.fr Les chelles de la densification. Le peuplement de l'Egypte de 1897 1996 / Different  

E-Print Network [OSTI]

Persée http://www.persee.fr Les échelles de la densification. Le peuplement de l'Egypte de 1897 à 1996 / Different scales of density. Population growth in Egypt 1897-1996 Denis Eric Géocarrefour, Année 1998, Volume 73, Numéro 3 p. 183 - 201 Voir l'article en ligne Entre 1986 et 1996, l'Egypte se peuplait

Paris-Sud XI, Université de

446

China's Energy Situation and Its Implications in the New by Hengyun Ma, Les Oxley and John Gibson  

E-Print Network [OSTI]

1 China's Energy Situation and Its Implications in the New Millennium by Hengyun Ma, Les Oxley and John Gibson No: 1/2009 #12;2 WORKING PAPER No. 1/2009 China's Energy Situation and Its Implications are interested in China's energy situation, however, numerous energy related issues in China still remain

Hickman, Mark

447

Etude thorique par R.M.N. du couplage entre structure et dynamique molculaires locales dans les solutions liquides  

E-Print Network [OSTI]

les solutions liquides P. H. Fries (*) (**) et B. Melloni Rigobello (***) Pontificia Universidad diffusion (équation de Smoluchowski) qui dépend de la structure locale du liquide. Pour tester dans des cas structure of the liquid. In order to test experimentally the validity of this équation, we propose

Boyer, Edmond

448

COMPTITION FISSION-SPALLATION DANS LES CIBLES DE THORIUM BOMBARDES PAR PROTONS DE 155 MeV  

E-Print Network [OSTI]

338. COMPÃ?TITION FISSION-SPALLATION DANS LES CIBLES DE THORIUM BOMBARDÃ?ES PAR PROTONS DE 155 Me isotopes du thorium et de l'actinium, par bombardement de Th 232 par des protons de 155 MeV. Ces sections were made on the formation of several isotopes of thorium, and actinium, by bombarding Th 232 by 155 Me

Paris-Sud XI, Université de

449

pins haut. Les trois courbes reprsentant ces actiBites dcroissent de moiti en 21 92 jours, et sont en  

E-Print Network [OSTI]

'ura- nium. ()n a trouvé que le sulfate de calcium a la méme propriété, tandis que les oxalates de bard uin actif. On trouva que l'aniline et la toluidine précipitent l'uran1u1 presque intégra- lenlcnt en LIn

Paris-Sud XI, Université de

450

thorie, rnais plutt l'emploi des tubes qui modifient les condi-tions de l'vaporation. E. HAUDI.  

E-Print Network [OSTI]

possible l'effet Peltier ; elles ont conlirmé la loi de Thomson. Celles de NI. Jahn, au contraire, duraient loi de Thomson relative à l'effet Peltier dans le cas de deux métaux différentes, d'un métal et d semblable à celui qui a été déjà décrit (1 ). Les valeurs moyennes de l'efl'et Peltier, lorsqu'on fait

Paris-Sud XI, Université de

451

6th International Symposium on High-Temperature Corrosion and Protection of Materials, Les Embiez, 16 au 21 mai 2004  

E-Print Network [OSTI]

6th International Symposium on High-Temperature Corrosion and Protection of Materials, Les Embiez ; transition ; oxide layer damage Abstract. The kinetic curves of oxidation of Zircaloy-4 exhibit a transition they have no influence during the pre-transition) and the oxide layer is damaged, with large cracks parallel

Boyer, Edmond

452

LISTE DES TITRES QUE SAIS-JE ET REPERES (PLATEFORME CAIRN) SEPTEMBRE 2012 -Les 100 dates de la culture gnrale  

E-Print Network [OSTI]

'audit social - L'autisme infantile - L'autoanalyse - Les Aztèques - Babylone - La bande dessinée - La banque et Cambodge - Le cancer - Le cancer du col de l'utérus - Le cannabis - Le capitalisme - La carte scolaire

Dojat, Michel

453

Comptes Rendus des JNC 17 Poitiers 2011 Bton de chanvre : Effet du dosage en granulat sur les proprits thermique  

E-Print Network [OSTI]

les propriétés thermique et mécanique. Hemp concrete: Effect of granular proportion pertinent sur un plan qualitatif et environnemental. Abstract Pre-casting of building elements made of hemp concrete, mix of lime and hemp, show that compression during casting lead to significant improvements

Paris-Sud XI, Université de

454

W.A.MOZART: Quatuor K 465 en ut majeur, Les dissonances . Adagio -Allegro -Andante cantabile -Menuetto: Allegro -Allegro Molto.  

E-Print Network [OSTI]

W.A.MOZART: Quatuor K 465 en ut majeur, « Les dissonances ». Adagio -Allegro -Andante cantabile - Menuetto: Allegro - Allegro Molto. Le cycle de six quatuors écrits par Mozart en 1783-1785 qu'il dédia à magnifiquement l'Allegro qui suit dont il fait immédiatement ressortir la joie, éclatante dans le thème du

Mazliak, Laurent

455

Effets de drivs d'acides gras sur les ingestions volontaires d'aliments chez le mouton  

E-Print Network [OSTI]

Notre-Dame de la Paix, B-5000 Namur, Belgique. Summary. The continuous infusion of different fatty acid the same decreasing effect on the voluntary dry matter intake of adult sheep than the infusion of oleic jours au cours desquelles les sous-groupes reçoivent, en alternance, des infusions continues (1 1/animal

Boyer, Edmond

456

L'art de l'analyse du risque-pays : Etude empirique dans les pays mergents  

E-Print Network [OSTI]

dans les pays en développement. Classification JEL : C13, D81, F17, F18, F23, F37. Mots-clefs : Risque Classification : C13, D81, F17, F18, F23, F37. Keywords : Country Risk; economic risk; financial risk; political

Boyer, Edmond

457

High performance distributed simulation for interactive simulated vascular reconstruction  

E-Print Network [OSTI]

performance. 1 Introduction Interactive simulation environments are dynamic systems that combine simula- tion.1 Performance of interactive simulation environments The most important factor in the performance of a dynamic dynamic simulation environment. 1 1 2 2 3 visualization rendering simulation time rendering delay

Amsterdam, Universiteit van

458

Simulation of LMFBR  

SciTech Connect (OSTI)

The title of this session is taken to imply the system-wide thermohydraulic simulation of liquid metal fast breeder reactors (LMFBR). One is interested in predicting the temperatures, pressures, and the coolant flow rates throughout the entire plant including the reactor core, the primary and secondary sodium heat transport circuits, the steam generating system as well as other auxiliary circuits. Such a simulation is needed for (1) scoping studies (i.e., in the pre-design phase of a plant), (2) detailed design development, (3) the safety analysis (post-design development phase), and (4) the operator training and plant operation. This session emphasizes the simulation of LMFBRs for only two key categories of transients: operational disturbances or events and the post-shutdown heat removal.

Agrawal, A.K.

1982-01-01T23:59:59.000Z

459

Liquid filtration simulation  

SciTech Connect (OSTI)

We have a developed a computer code that simulates 3-D filtration of suspended particles in fluids in realistic filter structures. This code, being the most advanced filtration simulation package developed to date, provides LLNL and DOE with new capabilities to address problems in cleaning liquid wastes, medical fluid cleaning, and recycling liquids. The code is an integrated system of commercially available and LLNL-developed software; the most critical are the computational fluid dynamics (CFD) solver and the particle transport program. For the CFD solver, we used a commercial package based on Navier-Stokes equations and a LLNL-developed package based on Boltzman-lattice gas equations. For the particle transport program, we developed a cod based on the 3-D Langevin equation of motion and the DLVO theory of electrical interactions. A number of additional supporting packages were purchased or developed to integrate the simulation tasks and to provide visualization output.

Corey, I.; Bergman, W.

1996-06-01T23:59:59.000Z

460

Simulating neural systems with Xyce.  

SciTech Connect (OSTI)

Sandia's parallel circuit simulator, Xyce, can address large scale neuron simulations in a new way extending the range within which one can perform high-fidelity, multi-compartment neuron simulations. This report documents the implementation of neuron devices in Xyce, their use in simulation and analysis of neuron systems.

Schiek, Richard Louis; Thornquist, Heidi K.; Mei, Ting; Warrender, Christina E.; Aimone, James Bradley; Teeter, Corinne; Duda, Alex M. [University of Illinois, Urbana-Champaign

2012-12-01T23:59:59.000Z

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


461

Wake Turbulence of Two NREL 5-MW Wind Turbines Immersed in a Neutral Atmospheric Boundary-Layer Flow  

E-Print Network [OSTI]

The fluid dynamics video considers an array of two NREL 5-MW turbines separated by seven rotor diameters in a neutral atmospheric boundary layer (ABL). The neutral atmospheric boundary-layer flow data were obtained from a precursor ABL simulation using a Large-Eddy Simulation (LES) framework within OpenFOAM. The mean wind speed at hub height is 8m/s, and the surface roughness is 0.2m. The actuator line method (ALM) is used to model the wind turbine blades by means of body forces added to the momentum equation. The fluid dynamics video shows the root and tip vortices emanating from the blades from various viewpoints. The vortices become unstable and break down into large-scale turbulent structures. As the wakes of the wind turbines advect further downstream, smaller-scale turbulence is generated. It is apparent that vortices generated by the blades of the downstream wind turbine break down faster due to increased turbulence levels generated by the wake of the upstream wind turbine.

Bashioum, Jessica L; Schmitz, Sven; Duque, Earl P N

2013-01-01T23:59:59.000Z

462

ClimateSimulation Biogeochemistry  

E-Print Network [OSTI]

to sequester further CO2 emissions. Chlorophyll concentration from an eddy-resolving POP simulation with full ability of the ocean to sequester further CO2 emissions. Chlorophyll concentration from an eddy release and the future ability of the ocean to sequester further CO2 emissions. Chlorophyll concentration

463

Simulation of geothermal subsidence  

SciTech Connect (OSTI)

The results of an assessment of existing mathematical models for subsidence simulation and prediction are summarized. The following subjects are discussed: the prediction process, physical processes of geothermal subsidence, computational models for reservoir flow, computational models for deformation, proficiency assessment, and real and idealized case studies. (MHR)

Miller, I.; Dershowitz, W.; Jones, K.; Myer, L.; Roman, K.; Schauer, M.

1980-03-01T23:59:59.000Z

464

FASTBUS simulation tools  

SciTech Connect (OSTI)

A generalized model of a FASTBUS master is presented. The model is used with simulation tools to aid in the specification, design, and production of FASTBUS slave modules. The model provides a mechanism to interact with the electrical schematics and software models to predict performance. The model is written in the IEEE std 1076-1987 hardware description language VHDL. A model of the ATC logic is also presented. VHDL was chosen to provide portability to various platforms and simulation tools. The models, in conjunction with most commercially available simulators, will perform all of the transactions specified in IEEE std 960-1989. The models may be used to study the behavior of electrical schematics and other software models and detect violations of the FASTBUS protocol. For example, a hardware design of a slave module could be studied, protocol violations detected and corrected before committing money to prototype development. The master model accepts a stream of high level commands from an ASCII file to initiate FASTBUS transactions. The high level command language is based on the FASTBUS standard routines listed in IEEE std 1177-1989. Using this standard-based command language to direct the model of the master, hardware engineers can simulate FASTBUS transactions in the language used by physicists and programmers to operate FASTBUS systems. 15 refs., 6 figs.

Dean, T.D. (Stanford Linear Accelerator Center, Menlo Park, CA (United States)); Haney, M.J. (Illinois Univ., Urbana, IL (United States))

1991-10-01T23:59:59.000Z

465

Enabling immersive simulation.  

SciTech Connect (OSTI)

The object of the 'Enabling Immersive Simulation for Complex Systems Analysis and Training' LDRD has been to research, design, and engineer a capability to develop simulations which (1) provide a rich, immersive interface for participation by real humans (exploiting existing high-performance game-engine technology wherever possible), and (2) can leverage Sandia's substantial investment in high-fidelity physical and cognitive models implemented in the Umbra simulation framework. We report here on these efforts. First, we describe the integration of Sandia's Umbra modular simulation framework with the open-source Delta3D game engine. Next, we report on Umbra's integration with Sandia's Cognitive Foundry, specifically to provide for learning behaviors for 'virtual teammates' directly from observed human behavior. Finally, we describe the integration of Delta3D with the ABL behavior engine, and report on research into establishing the theoretical framework that will be required to make use of tools like ABL to scale up to increasingly rich and realistic virtual characters.

McCoy, Josh (University of California Santa Cruz, Santa Cruz, CA); Mateas, Michael (University of California Santa Cruz, Santa Cruz, CA); Hart, Derek H.; Whetzel, Jonathan; Basilico, Justin Derrick; Glickman, Matthew R.; Abbott, Robert G.

2009-02-01T23:59:59.000Z

466

The gem5 simulator  

E-Print Network [OSTI]

The gem5 simulation infrastructure is the merger of the best aspects of the M5 [4] and GEMS [9] simulators. M5 provides a highly configurable simulation framework, multiple ISAs, and diverse CPU models. GEMS complements these features with a detailed and flexible memory system, including support for multiple cache coherence protocols and interconnect models. Currently, gem5 supports most commercial ISAs (ARM, ALPHA, MIPS, Power, SPARC, and x86), including booting Linux on three of them (ARM, ALPHA, and x86). The project is the result of the combined efforts of many academic and industrial institutions, including AMD, ARM, HP, MIPS, Princeton, MIT, and the Universities of Michigan, Texas, and Wisconsin. Over the past ten years, M5 and GEMS have been used in hundreds of publications and have been downloaded tens of thousands of times. The high level of collaboration on the gem5 project, combined with the previous success of the component parts and a liberal BSD-like license, make gem5 a valuable full-system simulation tool. 1

Nathan Binkert; Bradford Beckmann; Gabriel Black; Steven K. Reinhardt; Ali Saidi; Arkaprava Basu; Joel Hestness; Derek R. Hower; Tushar Krishna; Somayeh Sardashti; Rathijit Sen; Korey Sewell; Muhammad Shoaib; Nilay Vaish; Mark D. Hill; David A. Wood

2011-01-01T23:59:59.000Z

467

Parameterization of Pressure Perturbations in a PBL Mass-Flux Model CARA-LYN LAPPEN AND DAVID A. RANDALL  

E-Print Network [OSTI]

. RANDALL Department of Atmospheric Sciences, Colorado State University, Fort Collins, Colorado (Manuscript large-eddy simulations. 1. Introduction In 2001, we (Lappen and Randall 2001a­c, hereafter LR01a and Randall 2005, hereafter LR05), we describe ADHOC2, which includes consis- tent representations

Randall, David A.

468

Open Archive TOULOUSE Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and  

E-Print Network [OSTI]

b IMFT-UMR 5502, allée du Professeur Camille Soula, 31400 Toulouse, France Keywords: Gas turbines Turbulent non-perfectly premixed combustion Large eddy simulation Reduced chemistry Thermo-acoustic of mean and RMS fields of temperature, species, velocities as well as mixture fraction pdfs and unsteady

Paris-Sud XI, Université de

469

Open Archive TOULOUSE Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and  

E-Print Network [OSTI]

Soula, 31400 Toulouse, France Keywords: Gas turbines Turbulent non-perfectly premixed combustion Large eddy simulation Reduced chemistry Thermo-acoustic instabilities a b s t r a c t This paper investigates of temperature, species, velocities as well as mixture fraction pdfs and unsteady activity for two regimes

Mailhes, Corinne

470

Nuclear Engineering and Design 263 (2013) 3241 Contents lists available at SciVerse ScienceDirect  

E-Print Network [OSTI]

issue for nuclear power plants. In this work, temperature and velocity fluctuations in hot and cold al., 2009). Several thermal striping accidents have occurred in nuclear plants involving bothDirect Nuclear Engineering and Design journal homepage: www.elsevier.com/locate/nucengdes Large-eddy simulations

Attinger, Daniel

471

AN ABSTRACT OF THE THESIS OF Andrew John Cihonski for the degree of Master of Science in  

E-Print Network [OSTI]

processes such as oxy-coal combustion power plants. Presented in this work are a series of studies related present in these processes. This work on large-eddy simulation of particle-laden flows seeks to help working together since my arrival at Oregon State University. Also, I would like to thank the thermal

Apte, Sourabh V.

472

CTR SUMMER PROGRAM 2012 Group Participants Project Title Host  

E-Print Network [OSTI]

Venugopal Large eddy simulation of self-noise from a wind turbine airfoil at high angle of attack Bodart Moreau Uncertainty quantification of turbo-engine fan noise Iaccarino Jean-Christophe Giret Stéphane Moreau Uncertainty quantification of the far-field noise from a Rod-Airfoil configuration using

Prinz, Friedrich B.

473

CALTECH ASCI TECHNICAL REPORT 165 Reconstruction of subgrid models for nonpremixed combustion  

E-Print Network [OSTI]

CALTECH ASCI TECHNICAL REPORT 165 Reconstruction of subgrid models for nonpremixed combustion J. P. Medallo, S. Sarkar and C. Pantano #12;Reconstruction subgrid models for nonpremixed combustion J. P 2003; published 16 September 2003 Large-eddy simulation of combustion problems involves highly

474

Chapitre extrait de : G. Dubus et A. Oueslati (2009) Regards sur les migrations tunisiennes. Agadir : Editions Sud Contact. pp.297-305. (Mobilits et dynamiques spatiales au Maroc)  

E-Print Network [OSTI]

: Editions Sud Contact. pp.297-305. (Mobilités et dynamiques spatiales au Maroc) 1 Les migrations tunisiennes. pp.297-305. (Mobilités et dynamiques spatiales au Maroc) 2 Ce prem

Boyer, Edmond

475

A paraitre dans Transcrire et analyser les corpus d'enfant. In Edy Veneziano, Anne Salazar Orvig, Josie Bernicot Eds, Acquisition du  

E-Print Network [OSTI]

, Josie Bernicot Eds, Acquisition du langage et interaction. Paris : L'Harmattan » 1 Transcrire et interaction. Paris : L'Harmattan » 2 enfants à leur domicile. Les enregistrements sont ensuite transcrits et

Boyer, Edmond

476

Fundaci General de la UIB (FuGUIB) La Fundaci General de la Universitat de les Illes Balears (FuGUIB) s una instituci privada, amb  

E-Print Network [OSTI]

GUIB) és una institució privada, amb personalitat jurídica pròpia i sense ànim de lucre. Va ser creada per infraestructures esportives. Aquesta inversió s'ha materialitzat principalment en les següents accions: Inversions

Oro, Daniel

477

13.3. Fundaci General de la UIB (FuGUIB) La Fundaci General de la Universitat de les Illes Balears (FuGUIB) s una instituci  

E-Print Network [OSTI]

Balears (FuGUIB) és una institució privada, amb personalitat jurídica pròpia i sense ànim de lucre. Va ser'ha materialitzat en les accions principals següents: -- Anivellament del terra i instal·lació de parquet a la sala

Oro, Daniel

478

LivingColorGerdaSteiner&JrgLenzlinger-LeTempssuspendu#4HichamBerrada-LaRgledetroisStfanePerraud QUAND LES NANOSCIENCES RENCONTRENT L'ART CONTEMPORAIN  

E-Print Network [OSTI]

Berrada-LaRègledetroisStéfanePerraud QUAND LES NANOSCIENCES RENCONTRENT L'ART CONTEMPORAIN 23.09.2011 > 16.12.2011 EXPOSITION ORGANIS�E DANS Pierre et Marie Curie (UPMC), CNRS, NanoSciences Ile-de-France ____________ / VERNISSAGE / 22.09.2011 / � nanosciences. Les nanosciences constituent aujourd'hui un domaine de la recherche scientifique à caractère

van Tiggelen, Bart

479

Les agricultures familiales refltent une trs grande diversit. Elles se caractrisent par une multitude de techniques, une richesse de savoir-faire et par une savante combinaison  

E-Print Network [OSTI]

'arganiers, région de Tafraout, Maroc L'agriculture familiale ne saurait se passer de l'arbre et de la forêt. �pineux endémique du Maroc, l'arganier est parfaitement adapté à l'aridité. Les hommes ne le plantent pas mais 1998 « réserve de la biosphère » par l'Unesco. ©IRD-GenevièveMichon MAROC Les agricultures familiales

480

Les minralisations Cu---(Ni---Bi---U---Au---Ag) d'Ifri (district du Haut Seksaoua, Maroc) : apport de l'tude  

E-Print Network [OSTI]

Les minéralisations Cu---(Ni---Bi---U---Au---Ag) d'Ifri (district du Haut Seksaoua, Maroc) : apport, université de Meknés, Meknés, Maroc c Snarema, Casablanca, Maroc Résumé Les minéralisations à Cu d'Ifri se; pyrite; stockwerk; cisaillement; Tardi-Hercynien; Haut Atlas; MarocMots- clé: copper; pyrite; stockwork

Boyer, Edmond

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


481

JOURNAL DE PHBIQUE Colloque C4, supplment au no 10, Tome 36, Octobre 1975,pageC4-403 COMPARAISON ENTRE LES MCANISMES DE CORROSION  

E-Print Network [OSTI]

ENTRE LES M�CANISMES DE CORROSION ET DE FRAGILISATION INTERGRANULAIRES DES M�TAUX PAR LES M�TAUX Orsay, France Résumé. -11existe peu de données relatives aux mécanismes de corrosion et de fragilisation intergranulaires (corrosion, pénétration, fragilisation) sont induits par un même mécanisme initial : l

Paris-Sud XI, Université de

482

Cartographie de la pollution de l'air : une nouvelle approche base sur la tldtection et les bases de donnes gographiques. Application , la ville de  

E-Print Network [OSTI]

1 Cartographie de la pollution de l'air : une nouvelle approche bas·e sur la t·l·d·tection et les·lisation - Ecole des Mines de Paris, Sophia Antipolis, France Résumé La qualit· de l'air dans les villes est· de l'air (MATE, 2001). La pollution atmosph·rique est aujourd'hui sensiblement r·duite par rapport

Paris-Sud XI, Université de

483

Carole Sigman, La nouvelle Agence fdrale de l'Education en Russie : une innovation institutionnelle dans les rapports du financement et de la gestion de l'enseignement  

E-Print Network [OSTI]

du New Public Management (NPM)2 . Tout en emboîtant le pas à nombre de pays, elle présente deux'insuffisance de fonds publics. Dans les pays d'Europe occidentale qui entrent dans la logique du NPM, l accession au pouvoir en 2000 de renforcer l'Etat fédéral. Les outils du NPM offrent en effet des moyens d

Boyer, Edmond

484

Les populations priurbaines face l'automobile en grande couronne francilienne Population and automobile dependence in the outer suburbs of Paris  

E-Print Network [OSTI]

1 Les populations périurbaines face à l'automobile en grande couronne francilienne Population and automobile dependence in the outer suburbs of Paris Titre courant : les populations périurbaines face à l'automobile se propose d'identifier si l'automobile qui a participé au développement des espaces périurbains et

Paris-Sud XI, Université de

485

Simulation for ARPI and the Air Campaign Simulator Scott Anderson  

E-Print Network [OSTI]

' #12;Simulation for ARPI and the Air Campaign Simulator Paul Cohen Scott Anderson David Westbrook will be satis ed, and so forth. Nevertheless, such evaluation is critical to a sci- enti c understanding of how

Southern California, University of

486

Journes Nationales des IAE 3 & 4 avril 2006 Montpellier Congrs du Cinquantenaire : Les Sciences de Gestion, acquis et perspectives  

E-Print Network [OSTI]

Parcs Industriels Fournisseurs : des Communautés de Pratique qui signorent ? Sonia ADAM-LEDUNOIS Maître.38.49.48.68 ­ Fax : 02.38.49.48.16 ­ Email : sophie.renault@univ-orleans.fr Résumé : Cet article étudie les Parcs de proximité observés, lémergence de codes, de conventions, la conscience de lobjectif commun se

Paris-Sud XI, Université de

487

Sur les groupes de transformations rigides : Th'eor`eme de l'orbite dense-ouverte  

E-Print Network [OSTI]

Sur les groupes de transformations rigides : Th'eor`eme de l'orbite dense.2.2 Premi`ere r'eduction du th'eor`eme de l'orbite dense-ouverte. 14 2.2.3 Passage au domaine d'int'egrabilit'e infinit'esimale. . . . . . 15 2.2.4 Deuxi`eme r'eduction du th'eor`eme de l'orbite dense

Zeghib, Abdelghani

488

LES FROMAGES DE LA SLOVAQUIE. 54T rencontrent 'au milieu de la planche. On met la fin autour du  

E-Print Network [OSTI]

,IN). Force motrice. J{rrive maintenant à la question Je la force motrice. ,Il est assez difficile de déterminer a priori l'Importance de la force-. motrice nécessaire pour tous les types d'installations, car'ins'tallation frigorifique nécessaire.La puis- ". sance motrice nécessaire pour 1.000 Iitres de lait traité, résulte duo

Paris-Sud XI, Université de

489

L'approche par les capacits et le travail Robert Salais (IDHE-ENS Cachan, Centre Marc Bloch, Berlin)  

E-Print Network [OSTI]

théorique, mis en oeuvre et approfondis par Amartya Sen depuis les années 1980. L'effort consiste à engager une revisite du domaine du travail à partir de ces recherches d'Amartya Sen, entreprise à laquelle européens depuis le début des années 20003. Mon propos n'est pas d'appliquer Sen, mais de développer une

Paris-Sud XI, Université de

490

Politique quant au port des lunettes de scurit dans les laboratoires d'enseignement du Dpartement de biologie.  

E-Print Network [OSTI]

Politique quant au port des lunettes de sécurité dans les laboratoires d'enseignement du Département de biologie. 1. Le port de lentilles cornéennes est permis. Le cas échéant, il faut toutefois obligatoirement en aviser un membre de l'équipe de formation pour que ce soit noté. 2. Le port des lunettes de

Vellend, Mark

491

Les Houches Physics at TeV Colliders 2005 Beyond the Standard Model Working Group: Summary Report  

SciTech Connect (OSTI)

The work contained herein constitutes a report of the ''Beyond the Standard Model'' working group for the Workshop ''Physics at TeV Colliders'', Les Houches, France, 2-20 May, 2005. We present reviews of current topics as well as original research carried out for the workshop. Supersymmetric and non-supersymmetric models are studied, as well as computational tools designed in order to facilitate their phenomenology.

Allanach, B.C.; /Cambridge U., DAMTP; Grojean, C.; /Saclay, SPhT /CERN; Skands, P.; /Fermilab; Accomando, E.; Azuelos, G.; Baer, H.; Balazs, C.; Belanger, G.; Benakli, K.; Boudjema, F.; Brelier, B.; Bunichev, V.; Cacciapaglia, G.; Carena, M.; Choudhury, D.; Delsart, P.-A.; De Sanctis, U.; Desch, K.; Dobrescu, B.A.; Dudko, L.; El Kacimi, M.; /Saclay,

2006-03-17T23:59:59.000Z

492

Variabilit naturelle des souches du virus Y de la pomme de terre dans les cultures de piment  

E-Print Network [OSTI]

pathotype zéro PVY-0, le PVY-1 est virulent sur la variété de piment « Yolo Y », le PVY-1-2 est virulent sur les variétés « Yolo Y» et « Florida VR-2 ». D'autre part, une étroite homologie des propriétés. Pathotype-1, (PVY-1) : strains infecting 'Bastidon', 'Yolo Y' and related varieties. Pathotype-2, (PVY-1

Boyer, Edmond

493

Representing Cloud Processing of Aerosol in Numerical Models  

SciTech Connect (OSTI)

The satellite imagery in Figure 1 provides dramatic examples of how aerosol influences the cloud field. Aerosol from ship exhaust can serve as nucleation centers in otherwise cloud-free regions, forming ship tracks (top image), or can enhance the reflectance/albedo in already cloudy regions. This image is a demonstration of the first indirect effect, in which changes in aerosol modulate cloud droplet radius and concentration, which influences albedo. It is thought that, through the effects it has on precipitation (drizzle), aerosol can also affect the structure and persistence of planetary boundary layer (PBL) clouds. Regions of cellular convection, or open pockets of cloudiness (bottom image) are thought to be remnants of strongly drizzling PBL clouds. Pockets of Open Cloudiness (POCs) (Stevens et al. 2005) or Albrecht's ''rifts'' are low cloud fraction regions characterized by anomalously low aerosol concentrations, implying they result from precipitation. These features may in fact be a demonstration of the second indirect effect. To accurately represent these clouds in numerical models, we have to treat the coupled cloud-aerosol system. We present the following series of mesoscale and large eddy simulation (LES) experiments to evaluate the important aspects of treating the coupled cloud-aerosol problem. 1. Drizzling and nondrizzling simulations demonstrate the effect of drizzle on a mesoscale forecast off the California coast. 2. LES experiments with explicit (bin) microphysics gauge the relative importance of the shape of the aerosol spectrum on the 3D dynamics and cloud structure. 3. Idealized mesoscale model simulations evaluate the relative roles of various processes, sources, and sinks.

Mechem, D.B.; Kogan, Y.L.

2005-03-18T23:59:59.000Z

494

The Umbra Simulation Framework  

SciTech Connect (OSTI)

Umbra is a new Sandia-developed modeling and simulation framework. The Umbra framework allows users to quickly build models and simulations for intelligent system development, analysis, experimentation, and control and supports tradeoff analyses of complex robotic systems, device, and component concepts. Umbra links together heterogeneous collections of modeling tools. The models in Umbra include 3D geometry and physics models of robots, devices and their environments. Model components can be built with varying levels of fidelity and readily switched to allow models built with low fidelity for conceptual analysis to be gradually converted to high fidelity models for later phase detailed analysis. Within control environments, the models can be readily replaced with actual control elements. This paper describes Umbra at a functional level and describes issues that Sandia uses Umbra to address.

GOTTLIEB,ERIC; HARRIGAN,RAYMOND W.; MCDONALD,MICHAEL J.; OPPEL III,FRED J.; XAVIER,PATRICK G.

2001-06-01T23:59:59.000Z

495

PEBBLES Mechanics Simulation Speedup  

SciTech Connect (OSTI)

Pebble bed reactors contain large numbers of spherical fuel elements arranged randomly. Determining the motion and location of these fuel elements is required for calculating certain parameters of pebble bed reactor operation. These simulations involve hundreds of thousands of pebbles and involve determining the entire core motion as pebbles are recirculated. Single processor algorithms for this are insufficient since they would take decades to centuries of wall-clock time. This paper describes the process of parallelizing and speeding up the PEBBLES pebble mechanics simulation code. Both shared memory programming with the Open Multi-Processing API and distributed memory programming with the Message Passing Interface API are used in simultaneously in this process. A new shared memory lock-less linear time collision detection algorithm is described. This method allows faster detection of pebbles in contact than generic methods. These combine to make full recirculations on AVR sized reactors possible in months of wall clock time.

Joshua J. Cogliati; Abderrafi M. Ougouag

2010-05-01T23:59:59.000Z

496

Design of mechanical arterial simulator  

E-Print Network [OSTI]

A force controlled ultrasound probe is being explored as a new method of measuring blood pressure. An arterial simulator was designed and built for experiments. For this simulator, the vessels and bulk material were designed ...

Chai, Lauren (Lauren Amy)

2012-01-01T23:59:59.000Z

497

Simulated Interdiction: Proliferation Security Initiative  

E-Print Network [OSTI]

Parthia to curtail its nuclear weapons development programs. However, Bearia has often disagreed sharply with the U.S. and other international partners on specific steps to persuade Parthia to halt uranium enrichment. 17 For Simulation Use Only...For Simulation Use Only i For Simulation Use Only i George Bush School of Government and Public Service Nuclear Engineering Department Nuclear Security, Science and Policy Institute (NSSPI) Texas A&M University May 6, 2009 Simulated...

2009-01-01T23:59:59.000Z

498

December 2003 SIMULATION NEWS EUROPE  

E-Print Network [OSTI]

Simulating High Energy Ball Mills using Discrete Events ­ page 3 Transport Logistics Study Discrete Event, CP, C10, C11, C15 11 Comparison Solutions Comparisons of Modelling and Simulation Techniques Europe, comparisons on simulation techniques Editor-in-Chief: Felix Breitenecker, TU Vienna - ARGESIM, c

Kuzmanov, Georgi

499

Computer Simulations of Protein Folding  

E-Print Network [OSTI]

CHAPTER 8 Computer Simulations of Protein Folding VIJAY S. PANDE , ERIC J. SORIN , CHRISTOPHER D, CA 94305, USA 8.1 Introduction: Goals and Challenges of Simulating Protein Folding Computer as well as recent applications of this methodology. 8.1.1 Simulating Protein Folding Proteins play

Sorin, Eric J.

500

Bio-threat microparticle simulants  

DOE Patents [OSTI]

A bio-threat simulant that includes a carrier and DNA encapsulated in the carrier. Also a method of making a simulant including the steps of providing a carrier and encapsulating DNA in the carrier to produce the bio-threat simulant.

Farquar, George Roy; Leif, Roald

2014-09-16T23:59:59.000Z