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Journal of Projectiles, Rockets, Missiles and Guidance >

2019 , Vol. 39 >Issue 5: 89 - 94

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2019.05.021

Numerical Study on Pylon/Cavity Combination in a Supersonic Combustion

  • YANG Wenjia ,
  • GAO Feng ,
  • WANG Yingyang ,
  • MA Xinpeng
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  • Air Force Engineering University, Xi’ an 710051, China

Received date: 2018-09-02

  Online published: 2025-05-12

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Abstract

The numerical simulation has been carried out to investigate the cold flow characteristics for mixing efficiency and flame stability of the composite structure of pylon and cavity in the supersonic combustion. The different length-to-depth(L/D) and aft ramp angle(α) of the cavity structure have been comparative analyzed and investigated. It is noted that larger L/D are helpful in increasing the penetration depth of the jet and mixing efficiency, but also lead to a higher total pressure loss; The decrease of cavity aft ramp angle increase the penetration depth of the jet and total pressure loss, and the smaller the aft ramp angle is, the more obvious the influence of angle change on total pressure loss is. Moreover, cavity with the length-to-depth of 3 and aft ramp angle of 45° is recommended regarding high mixing efficiency and less total pressure loss.

Key words： supersonic combustion; pylon; cavity; numerical simulation

Cite this article

YANG Wenjia , GAO Feng , WANG Yingyang , MA Xinpeng . Numerical Study on Pylon/Cavity Combination in a Supersonic Combustion[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2019 , 39(5) : 89 -94 . DOI: 10.15892/j.cnki.djzdxb.2019.05.021

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