Volume 28 Issue 9
Sep.  2013
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CHAI Dong, FANG Yang-wang, TONG Zhong-xiang, GAO Xiang. Numerical simulation of characteristic of hypersonic ablation flow field containing alkali-metal impurities[J]. Journal of Aerospace Power, 2013, 28(9): 1962-1966.
Citation: CHAI Dong, FANG Yang-wang, TONG Zhong-xiang, GAO Xiang. Numerical simulation of characteristic of hypersonic ablation flow field containing alkali-metal impurities[J]. Journal of Aerospace Power, 2013, 28(9): 1962-1966.

Numerical simulation of characteristic of hypersonic ablation flow field containing alkali-metal impurities

  • Received Date: 2012-09-10
  • Publish Date: 2013-09-28
  • As for the ablation of hypersonic vehicles,the parabolized Navier-Stokes(PNS) equations of chemical non-equilibrium were calculated numerically based on a kind of Newton-type iteration method.The chemical model of 18 species 33 reactions containing alkali-metal impurities was established on the basis of a carbon-phenolic ablative material.Firstly,the wall temperature of small blunt cone was computed and the numerical results were validated by comparing with those in a reference.Then,the hypersonic ablation flow field containing alkali-metal impurities were simulated and the effects of ablation reactions on the flow parameters were deeply analyzed.The results show that compared with non-ablation condition,the temperature of flow field increases by 10% to 15% in ablation reactions.And the electron number densities increase by 1 to 2 orders of magnitude after taking alkali-metal Na into consideration.

     

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