Volume 30 Issue 9
Sep.  2015
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Article Navigation >  Journal of Aerospace Power  > 2015  >  30(9): 2167-2173
LUO Da-hai, YAN Chao, WANG Xiao-yong. Partially averaged Navier-Stokes method for simulation of supersonic flow over a ramped-cavity[J]. Journal of Aerospace Power, 2015, 30(9): 2167-2173. doi: 10.13224/j.cnki.jasp.2015.09.015
Citation: LUO Da-hai, YAN Chao, WANG Xiao-yong. Partially averaged Navier-Stokes method for simulation of supersonic flow over a ramped-cavity[J]. Journal of Aerospace Power, 2015, 30(9): 2167-2173. doi: 10.13224/j.cnki.jasp.2015.09.015
shu

Partially averaged Navier-Stokes method for simulation of supersonic flow over a ramped-cavity

doi: 10.13224/j.cnki.jasp.2015.09.015

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 2014-03-17
  • Publish Date: 2015-09-28
    Abstract
  • Partially averaged Navier-Stokes (PANS) model was adopted to numerically investigate the supersonic ramped-cavity flow. The objective of current study is to assess the capability of PANS method in the prediction of unsteady supersonic turbulent flow. Comparison of PANS, Reynolds averaged Navier-Stokes (RANS) and detached eddy simulation (DES) results with the available experimental data shows that: (1) velocity profiles, wall-pressure and skin-friction coefficient distributions predicted by PANS model with variable unresolved-to-total ratio of kinetic energy are consistent with DES results; and (2) both of PANS results with variable unresolved-to-total ratio of kinetic energy and DES results are in good agreement with the experimental data and superior to those predicted by RANS; and (3) unsteady Raynolds averaged Navier-Stokes (URANS) model predicts two dimensional steady geometries of free shear layer, while DES and PANS resolve more abundant flow structures; and (4) PANS model with constant unresolved-to-total ratio of kinetic energy cannot return to RANS model in the near-wall region despite it can resolve more scales of motion compared with RANS; and the predicted velocity profiles of upstream turbulent boundary layer mismatch the log law, thus downstream flow simulation deviates a lot from the experiment.

     

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