Volume 36 Issue 9
Sep.  2021
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ZHA Jun, ZENG Kaichun, KOU Xiping, YANG Xinghua, ZHANG Huizhuo. Transonic flow characteristics of supercritical airfoil in heavy gas medium[J]. Journal of Aerospace Power, 2021, 36(9): 1894-1905. doi: 10.13224/j.cnki.jasp.20200490
Citation: ZHA Jun, ZENG Kaichun, KOU Xiping, YANG Xinghua, ZHANG Huizhuo. Transonic flow characteristics of supercritical airfoil in heavy gas medium[J]. Journal of Aerospace Power, 2021, 36(9): 1894-1905. doi: 10.13224/j.cnki.jasp.20200490

Transonic flow characteristics of supercritical airfoil in heavy gas medium

doi: 10.13224/j.cnki.jasp.20200490
  • Received Date: 2020-11-17
  • Publish Date: 2021-09-28
  • The Peng-Robinson non-ideal gas state equation was used to simulate the thermodynamic characteristics of the heavy gas medium,and to form a closed flow model for heavy gas medium by combining with the Reynolds average Navier-Stokes equations.The LU-SGS (lower-upper symmetric Gauss-Seidel) implicit time-marching scheme and the finite volume method were used to simulate the flow over a supercritical airfoil in air and heavy gas medium respectively.Numerical results showed that the lift and drag of supercritical airfoil increased,the surface negative pressure in supersonic region increased,the displacement thickness of boundary layer decreased,the shock wave moved backward,the skin friction increased significantly,and the trailing edge flow separation delayed under transonic conditions.This study provides a basic support for the subsequent research on flutter characteristics of aircrafts in heavy gas medium and the development of correction methods.

     

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