| 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 |
| DOI： |
| 分类号:V231 |
| 基金项目: |
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| COMBUSTION EFFECT ON RECIRCULATION ZONE IN A RAMJET DUMP COMBUSTOR |
|
Wang Weitong, Guo Zengyuan, Zhang Zhenjia
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|
he 31st Research Iust., Beijing, 100074
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| 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 |
