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Large eddy simulation and the variational multiscale method. (English) Zbl 0998.76040
Summary: A large eddy simulation (LES) formulation is developed from the variational multiscale method. Modeling is confined to the effect of small-scale Reynolds stress, in contrast with classical LES in which the entire subgrid-scale stress is modeled. All other effects are accounted for exactly. It is argued that many shortcomings of the classical LES/constant-coefficient Smagorinsky model are eliminated by the scale separation inherent ab initio in the present approach.

MSC:
76F65 Direct numerical and large eddy simulation of turbulence
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