Results 261 to 270 of about 177,184 (308)

Three-dimensional shock/boundary-layer interaction using Reynolds stress equation turbulence model

AIAA Journal, 1996
The three-dimensional crossing shock wave/turbulent-boundary-layer interaction caused by an asymmetric 7 x 11-deg double fin with incoming Mach number 3.95 was simulated using the Reynolds-averaged Navier-Stokes equations with a full Reynolds stress equation turbulence model.
Zha, Ge-Cheng, Knight, Doyle
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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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Diagonalization of the Reynolds-averaged Navier-Stokes equations with the Reynolds-stress Turbulence Model

1996
Because of the need for a general turbulence model that would work for arbitrary cases, the Reynolds-stress model (RSM) has gained popularity in turbulence modeling. Most RSM applications have been for incompressible flow. In that case Reynolds-stress forces act only in the momentum equations. Still, the coupling with the flow equations is a nontrivial
Patrik Rautaheimo, Timo Siikonen, Antti Hellsten   +2 more
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Modeling of Pumping Performance of Labyrinth Screw Pump (LSP) by 2D Reynolds Stress Equations

Journal of Fluids Engineering, 2009
By using Prandtl’s mixing length theory to model two-dimensional Reynolds stress equations, the pumping performance of a labyrinth screw pump (LSP) is studied and several key parameters are empirically determined. As a result, two innovative concepts, a cell head coefficient Kf and a pump total head coefficient Kb, are proposed.
Runmei Ma, Kuisheng Wang
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A data‐driven turbulence modeling for the Reynolds stress tensor transport equation

International Journal for Numerical Methods in Fluids
AbstractThe long lasting demand for better turbulence models and the still prohibitively computational cost of high‐fidelity fluid dynamics simulations, like direct numerical simulations and large eddy simulations, have led to a rising interest in coupling available high‐fidelity datasets and popular, yet limited, Reynolds averaged Navier–Stokes ...
Matheus S. S. Macedo, Matheus A. Cruz, Bernardo P. Brener, Roney L. Thompson   +3 more
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Turbulent rotating flow calculations: An assessment of two-equation anisotropic and Reynolds stress models

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 1998
The stress field in a rotating turbulent internal flow is highly anisotropic. This is true irrespective of whether the axis of rotation is aligned with or normal to the mean flow plane. Consequently, turbulent rotating flow is very difficult to model.
S P Yuan, R M C So
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Discontinuous Galerkin discretization of the Reynolds-averaged Navier–Stokes equations with the shear-stress transport model

Journal of Computational Physics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schoenawa, Stefan, Hartmann, Ralf
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Amplification effect of redistribution from elliptic relaxation equation with Reynolds stress model in rotating flow

Journal of Mechanical Science and Technology, 2008
A new elliptic relaxation operator that is able to correct the erroneous increase of the redistribution from the original one suggested by Durbin [J. Fluid Mech. 249], is developed by using an inhomogeneous correction to its source term. In this work the amplification of the redistribution arising from the original model is investigated in detail by ...
Kun-Ho Chun, Young-Don Choi, Jong-Keun Shin, Tae-Hyun Chun   +3 more
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Modeling Separation-Induced Transition Using a Non-Linear Three Equation Turbulence Model and a Reynolds Stress Turbulence Model

Volume 4: Heat Transfer, Parts A and B, 2010
This paper presents an effort to model separation-induced transition on a flat plate with a semi-circular leading edge, by using two advanced turbulence models, the three equation non-linear model k-ε-A2 of Craft et al. [16] and the Reynolds-stress model of Craft [13].
Zinon Vlahostergios, Kyros Yakinthos
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Development and calibration of algebraic nonlinear models for terms in the Reynolds stress transport equations

Physics of Fluids, 2000
A simple and straightforward method is presented for the derivation and calibration of algebraic nonlinear models for terms in Reynolds stress turbulence closures. The method extensively utilizes data from direct numerical simulations to allow an investigation of the model performance over the entire Reynolds stress anisotropy-invariant map.
Sjögren, Torbjörn, Johansson, Arne V.
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