Volume 34 Issue 12
Dec.  2019
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OUYANG Wenchong, LIU Yanming, DENG Weifeng. Numerical simulation of flow field around hypersonic vehicle at different reentry heights[J]. Journal of Aerospace Power, 2019, 34(12): 2608-2615. doi: 10.13224/j.cnki.jasp.2019.12.009
Citation: OUYANG Wenchong, LIU Yanming, DENG Weifeng. Numerical simulation of flow field around hypersonic vehicle at different reentry heights[J]. Journal of Aerospace Power, 2019, 34(12): 2608-2615. doi: 10.13224/j.cnki.jasp.2019.12.009
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Numerical simulation of flow field around hypersonic vehicle at different reentry heights

doi: 10.13224/j.cnki.jasp.2019.12.009

  • School of Aerospace Science and Technology,Xidian University,Xi’an 710071,China

  • Received Date: 2019-04-18
  • Publish Date: 2019-12-28
    Abstract
  • Based on the axisymmetric N-S equation and the 7-component 18 chemical reaction, the flow fields around the RAMC-Ⅱ vehicle at the reentry height between 20 km to 90 km were numerically simulated and the algorithm was verified. Not only was the electron number density distribution calculated, but also the collision frequency, average temperature and total pressure distribution at different reentry heights were given. The analysis showed that the electron number density inecreased first and then decreased with the increasing reentry height. When the reentry height was constant, the electron number density decreased with the axial direction, and the Gaussian distribution was consistent along the direction perpendicular to the surface of the vehicle. The maximum value of collision frequency decreased with the increase of the reentry height. When the reentry height was constant, the collision frequency decreased in the axial direction. The maximum average temperature at the same reentry height gradually decreased with the axial distance. The maximum total pressure decreased with the increase of reentry height, and the maximum total pressure decreased with the axial distance at the same reentry height.

     

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