Damping effect in LES subgridscale modeling
Abstract
A proper velocity scale for the Subgridscale (SGS) eddy viscosity model for LES (Large Eddy Simulation) was determined for the fully developed channel and the mixing layer flows. In the channel, a clear advantage over more conventional treatments was shown by using the normal stress. It was also shown that the SGS normal stress is equally useful as the total SGS turbulent energy for modeling in mixing layers. The model constant in the normal stress model was found to be fairly independent on the type of flow.
- Publication:
-
Computational Fluid Dynamics 1992
- Pub Date:
- December 1992
- Bibcode:
- 1992cfd..proc..273H
- Keywords:
-
- Channel Flow;
- Computerized Simulation;
- Flow Distribution;
- Mathematical Models;
- Numerical Analysis;
- Numerical Flow Visualization;
- Stratified Flow;
- Turbulent Flow;
- Wall Flow;
- Computational Fluid Dynamics;
- Computational Grids;
- Eddy Viscosity;
- Navier-Stokes Equation;
- Shear Flow;
- Two Dimensional Flow;
- Vortices;
- Fluid Mechanics and Heat Transfer