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Article Dans Une Revue Theoretical and Computational Fluid Dynamics Année : 2007

Invariant subgrid modelling in large-eddy simulation of heat convection turbulence

Résumé

Symmetries have an important role in turbulence. To some extent, they contain the physics of the equations (conservation laws,...), and it is essential that turbulence models respect them. However , as observed by Oberlack ([16]) and next by Razafindralandy and Hamdouni ([24]) in the case of an isothermal fluid, only few subgrid stress tensor models preserve the symmetries of the Navier-Stokes equations. In this communication, we present the symmetries of the equations of a non-isothermal fluid flow and analyze some common subgrid stress tensor and flux models under the point of view of these symmetries.
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Dates et versions

hal-00312284 , version 1 (01-04-2019)

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Dina Razafindralandy, Aziz Hamdouni. Invariant subgrid modelling in large-eddy simulation of heat convection turbulence. Theoretical and Computational Fluid Dynamics, 2007, 21 (4), pp.231-244. ⟨10.1007/s00162-007-0046-1⟩. ⟨hal-00312284⟩
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