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Large eddy simulation of turbulent channel flows by the variational multiscale method

Physics of Fluids · 2001 · Vol. 13(6) · pp. 1784–1799

Thomas J.R. Hughes✉(Stanford University)Assad A. Oberai(Stanford University)Luca Mazzei(Stanford University)

Abstract

The variational multiscale formulation of LES is applied to two-dimensional equilibrium and three-dimensional nonequilibrium channel flows. Simple, constant-coefficient Smagorinsky-type eddy viscosities, without wall damping functions, are used to model the decay of small scales, an approach which is not viable for wall-bounded flows within the traditional LES framework. Nevertheless, very good results are obtained.

Advanced Mathematical Modeling in Engineering Fluid Dynamics and Turbulent Flows Rheology and Fluid Dynamics StudiesPhysicsTurbulenceMechanicsBounded functionLarge eddy simulationStatistical physicsChannel (broadcasting)Non-equilibrium thermodynamicsConstant (computer programming)Open-channel flow

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Variational multiscale residual-based turbulence modeling for large eddy simulation of incompressible flows