Results 231 to 240 of about 29,107 (264)

Reynolds-stress modelling of transonic afterbody flows

The Aeronautical Journal, 2001
AbstractSeveral afterbody flows, involving shock-boundary-layer interaction, are used to evaluate recent developments in a realizable low-Reynolds-number, second-moment closure of turbulence. The model considered is a compressibility-adapted variant of the recent incompressible-flow form of Craft and Launder. This includes a tensorially cubic model for
M. A. Leschziner, P. Batten, T. J. Craft
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Turbulence constitutive modeling of the square root of the Reynolds stress

Physical Review E, 2015
A methodology for turbulence constitutive modeling is discussed on the basis of the square-root tensor of the Reynolds stress. The present methodology can satisfy the realizability condition for the Reynolds stress proposed by Schumann [Phys. Fluids 20, 721 (1977)] in a more general manner than the conventional methodologies.
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Compressible Turbulence Predicted by Reynolds Stress Models

SAE Technical Paper Series, 1991
<div class="htmlview paragraph">Turbulence in strongly compressible flows as found in internal combustion engines is investigated with several models of turbulence. The standard <i>k</i> - ϵ model, 2 classical and 4 of the most recent Reynolds Stress models are used in this investigation. The compressible flow with a non-zero velocity
C. Borgnakke, Y. Xiao
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The Reynolds stress transport equations in a momentumless wake - Experiments and models

Fluid Dynamics Conference, 1996
The determination of the transfer terms in the Reynolds stress transport equations is an important issue in the improvement of closure models in turbulence. A part of these efforts is to provide accurate experimental information on each term of these equations and, particularly, on the pressure-strain term.
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Modeling of equation for the dissipation rate of Reynolds stresses

Journal of Engineering Physics and Thermophysics, 1999
All the correlations involved in the equation for the rate of dissipation of kinetic turbulence energy are modeled. Approximations derived earlier are used as model relations. Modeling is performed by direct comparison of the approximations with the correlations obtained as a result of a numerical solution of the Navier—Stokes unsteady-state equations.
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On modelling the Reynolds stress in the context of continuum mechanics

Communications in Nonlinear Science and Numerical Simulation, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Reynolds-Stress Closure Model for Conditional Variables

1985
Free boundaries of turbulent shear flows show an intermittent character with a sharp interface separating instantaneously turbulent and non-turbulent zones shown by Corrsin and Kistler (1954). Prediction models for turbulent shear flows did not take this intermittent character into account so far.
J. Janicka, W. Kollmann
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A reynolds-stress model for the prediction of diffusion flames

Symposium (International) on Combustion, 1988
A Re-stress model for the prediction of diffusion flames will be presented. Model requirements for the calculation of flames will be considered. The model is based on Favre-averaged quantities. Special attention is paid to two important aspects of flame modelling.
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A Reynolds Stress Model for Flows With Drag Reduction

Journal of Fluids Engineering, 1979
A simple turbulence model has been proposed, which is based on the Reynolds stress equation and on the turbulence energy dissipation equation. By increasing the viscosity in the equations for the components of Reynolds stress in which the cross-stream velocity appears, the model is shown to be able to reproduce the main features of turbulent flows near
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Differential Reynolds Stress Modeling for Aeronautics

50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2012
Cecora, Rene-Daniel, Eisfeld, Bernhard, Probst, Axel, Crippa, Simone, Radespiel, Rolf   +4 more
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