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
Article
  • 39 Downloads

Abstract

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.

Keywords

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

References

  1. 1.
    Smagorinsky, J., General circulation experiments with the primitive equations I. The basic experiment, Mon. Wea. Rev., 1963, 91: 99.CrossRefGoogle Scholar
  2. 2.
    Bardina, J., Ferziger, J. H., Reynolds, W. C., Improved subgrid scale models for large eddy simulation, AIAA paper 80-1357, 1980.Google Scholar
  3. 3.
    Yoshizawa, A., A statistical theory of thermally driven turbulent shear flow with the derivation of subgrid model, J. Phys. Soc. Japan, 1983, 52: 1194.CrossRefGoogle Scholar
  4. 4.
    Germano, M., Piomelli, U., Moin, P. et al., A dynamic subgrid-scale eddy viscosity model, Phys. Fluids A, 1991, 3: 1760.MATHCrossRefGoogle Scholar
  5. 5.
    Zang, Y., Street, R. L., Koseff, J. R., A dynamic mixed subgrid-scale model and its application to turbulent recirculating flows, Phys. Fluids A, 1993, 5: 3186.CrossRefGoogle Scholar
  6. 6.
    Gerz, T., Schumann, U., Elgobashi, S. E., Direct numerical simulation of stratified homogeneous turbulent shear flows, J. Fluid Mech., 1989, 200: 563.MATHCrossRefGoogle Scholar
  7. 7.
    Iida, O., Kasagi, N., Direct numerical simulation of unstably stratified turbulent channel flow, ASME J. Heat Transfer, 1997, 119: 53.CrossRefGoogle Scholar
  8. 8.
    Cabot, W., Moin, P., Large eddy simulation of complex engineering and geophysical flows (eds. Galperin, B., Orszag, S. A.), New York: Cambridge University Press, 1993.Google Scholar
  9. 9.
    Ciofalo, M., Collins, M. W., Large-eddy simulation of turbulent flow and heat transfer in plane and rib-roughened channels, Int. J. Num. Methods in Fluids, 1992, 15: 453.MATHCrossRefGoogle Scholar
  10. 10.
    Liu, N. Y., Lu, X. Y., Zhuang, L. X., A new dynamic subgrid-scale model for the large eddy simulation of stratified flow, Science in China, Ser. A, 2000, 43(4): 391–397.MATHCrossRefGoogle Scholar
  11. 11.
    Kim, J., Moin, P., Application of fractional-step method to incompressible Navier-Stokes equations, J. Comput. Phys., 1985, 59: 308–323.MATHCrossRefMathSciNetGoogle Scholar
  12. 12.
    Moin, P., Kim, J., Numerical investigation of turbulent channel flow, J. Fluid Mech., 1982, 118: 341.MATHCrossRefGoogle Scholar
  13. 13.
    Steven, E. H., The evolution and structure of homogeneous stably stratified sheared turbulence, Dissertation of University of Stanford, USA, 1990.Google Scholar

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

Personalised recommendations