【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。更多还原

【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.更多还原