Large eddy simulation and the variational multiscale method. (English) Zbl 0998.76040

Hughes, Thomas J. R.; Mazzei, Luca; Jansen, Kenneth E.

Comput. Vis. Sci. 3, No. 1-2, 47-59 (2000).

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

Keywords:

large eddy simulation; variational multiscale method; small-scale Reynolds stress; Smagorinsky model; scale separation