An improved dynamic subgrid-scale model and its application to large eddy simulation of stratified channel flows

  • Fengquan Zhong
  • Nansheng Liu
  • Xiyun Lu
  • Lixian Zhuang


In the present paper, a new dynamic subgrid-scale (SGS) model of turbulent stress and heat flux for stratified shear flow is proposed. Based on our calculated results of stratified channel flow, the dynamic subgrid-scale model developed in this paper is shown to be effective for large eddy simulation (LES) of stratified turbulent shear flows. The new SGS model is then applied to the LES of the stratified turbulent channel flow to investigate the coupled shear and buoyancy effects on the behavior of turbulent statistics, turbulent heat transfer and flow structures at different Richardson numbers.


large eddy simulation (LES) dynamic subgrid-scale (SGS) model stratified shear turbulence turbulent channel flow 


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Copyright information

© Science in China Press 2002

Authors and Affiliations

  • Fengquan Zhong
    • 1
  • Nansheng Liu
    • 1
  • Xiyun Lu
    • 1
  • Lixian Zhuang
    • 1
  1. 1.Department of Modern MechanicsUniversity of Science and Technology of ChinaHefeiChina

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