Study of subgrid models for sheared turbulence
Abstract
The validity of the usual subgrid models for large-eddy simulations is discussed for anisotropic turbulence. The transfer between large eddies and subgrid scales is studied in the framework of a two-point closure. An eddy-viscosity model is thereafter used to parameterize the small scales in a two-point closure computation. Comparisons are made with the results of the same two-point closure applied to the whole turbulent spectrum. The results presented in this paper have been obtained in the case of an homogeneous shear flow. They show the limits of eddy-viscosity subgrid models for nonisotropic turbulence.
- Publication:
-
4th Symposium on Turbulent Shear Flows
- Pub Date:
- 1984
- Bibcode:
- 1984stsf.proc....9B
- Keywords:
-
- Computational Fluid Dynamics;
- Eddy Viscosity;
- Shear Flow;
- Turbulence Models;
- Turbulent Flow;
- Anisotropy;
- Computational Grids;
- Homogeneous Turbulence;
- Spectral Methods;
- Fluid Mechanics and Heat Transfer