An investigation of SGS-stress anisotropy modeling in complex turbulent flow fields

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)2081-2088
Number of pages8
JournalProceedings of the International Symposium on Turbulence, Heat and Mass Transfer
Volume2012-September
DOIs
Publication statusPublished - Jan 1 2012
Event7th International Symposium On Turbulence, Heat and Mass Transfer, THMT 2012 - Palermo, Italy
Duration: Sep 24 2012Sep 27 2012

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

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