An effective model expression for representing the anisotropy of the subgrid-scale (SGS) stress used in large eddy simulation was investigated. The present SGS-stress model was constructed by combining a representative isotropic linear eddy-viscosity model (EVM) with an extra anisotropic term. This extra term was based on a residual term after subtracting an EVM form from the Bardina's SGS-Reynolds-stress model (Bardina et al., AIAA Paper, 80-1357, 1980). The resultant term yields no undesirable energy transfer. Thus, the present anisotropic term is expected to have no serious effect on computational stability, even if highly anisotropic SGS-stress components are returned. In order to discuss the model performance, the present SGS model was applied to a fundamental plane channel flow and a plane impinging jet.
|Number of pages||8|
|Journal||Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer|
|Publication status||Published - 2012|
|Event||7th International Symposium On Turbulence, Heat and Mass Transfer, THMT 2012 - Palermo, Italy|
Duration: Sept 24 2012 → Sept 27 2012
All Science Journal Classification (ASJC) codes
- Fluid Flow and Transfer Processes