推进技术 ›› 1996, Vol. 17 ›› Issue (1): 8-12.

• • 上一篇    下一篇

冲压发动机突扩燃烧室回流旋涡“热缩”效应的研究

王卫东,过增元,张振家   

  1. 航天工业总公司31所;航天工业总公司31所;航天工业总公司31所
  • 发布日期:2021-08-15

COMBUSTION EFFECT ON RECIRCULATION ZONE IN A RAMJET DUMP COMBUSTOR

  1. he 31st Research Iust., Beijing, 100074;he 31st Research Iust., Beijing, 100074;he 31st Research Iust., Beijing, 100074
  • Published:2021-08-15

摘要: 对均匀混气进口突扩燃烧室进行了数值研究,比较了燃烧状态和非燃烧状态突扩回流区。发现燃烧状态的回流区长度比非燃烧状态减小了36%(混气当量比为0.65)。分析了燃烧引起回流区长度减小的两个重要原因:温度梯度对速度矢量的偏折和加速作用以及热阻力作用。

关键词: 突扩燃烧室;流动分布;热效应;数值模拟

Abstract: numerical study is conducted to investigate the combustion effect on recirculationzone in a ramjet combustor. The results show that heat addition to such flow will lead to the reductiono f CRZ length because of velocity vector depending on temperature gradient and pressure gradient.

Key words: Dump combustion chamber;Flow distribution;Thermal response, Numerical simulation