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A stochastic subgrid model for sheared turbulence

  • J. P. Bertoglio
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 230)

Abstract

A new subgrid model for homogeneous turbulence is proposed. The model is used in a method of Large Eddy Simulation coupled with an E.D.Q.N.M. prediction of the statistical properties of the small scales. The model is stochastic in order to allow a “desaveraging” of the informations provided by the E.D.Q.N.M. closure. It is basedon stochastic amplitude equations for two-point closures. It allows backflow of energy from the small scales, introduces stochasticity into L.E.S., and is well adapted to non isotropic fields. A few results are presented here.

Keywords

Turbulent Kinetic Energy Large Eddy Simulation Eddy Viscosity Isotropic Turbulence Amplitude Equation 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • J. P. Bertoglio
    • 1
  1. 1.Laboratoire de Mécanique des FluidesEcole Centrale de LyonEcully CedexFrance

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