Volume 39 Issue 8
Aug.  2013
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Wen Xiaoqing, Liu Yangwei, Fang Le, et al. Improving the capability of k-ωSST turbulence model for predicting stall characteristics of airfoil[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(8): 1127-1132. (in Chinese)
Citation: Wen Xiaoqing, Liu Yangwei, Fang Le, et al. Improving the capability of k-ωSST turbulence model for predicting stall characteristics of airfoil[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(8): 1127-1132. (in Chinese)

Improving the capability of k-ωSST turbulence model for predicting stall characteristics of airfoil

  • Received Date: 04 Sep 2012
  • Rev Recd Date: 08 Aug 2013
  • Publish Date: 30 Aug 2013
  • Two-dimensional numerical simulations of NREL airfoil S825 with k-ωSST turbulence model were conducted. For the k-ωSST turbulence model could not predict the airfoil aerodynamic performance accurately at stall conditions, the non-equilibrium turbulence transport nature was systematically analyzed. It was found that: the mis-predicting of the stall characteristics was due to the fact that the tradition turbulence model could not accurately predict the strongly non-equilibrium turbulence transport nature. Correcting the constant a1 or β* could improves obviously the capability of prediction stall characteristics of k-ω SST turbulence model,because by giving a more reasonable turbulence transport nature, the capability of k-ω SST model in capturing the non-equilibrium turbulence was improved notably.

     

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