论文部分内容阅读
两阶段脉冲爆震发动机是一种利用激波在部分反应的混气中触发高频爆震的新型脉冲爆震发动机,本文利用数值模拟的方法重点研究谐振腔内的混气成分及其分布规律,当量比为1时,混气成分以CO2、H2O为主,谐振腔内不能继续燃烧;在当量比为2.5~3时,燃烧处于富油状态,这样会产生较多的CH轻分子化合物,此时的燃烧产物能够在谐振腔内燃烧,如果触发激波强度足够大的话,也一定能够触发爆震波。研究结果对深入理解与掌握两阶段脉冲爆震发动机概念及工作过程提供了理论依据。
The two-stage pulse detonation engine is a new type of pulse detonation engine that uses high-frequency detonation to trigger high-frequency detonation in a partially reacted mixture by using shock waves. In this paper, the numerical simulation is used to focus on the components and their distribution in the cavity , The equivalent ratio of 1, the mixed gas components of CO2, H2O-based, resonant cavity can not continue to burn; equivalent ratio of 2.5 to 3, the combustion is rich in oil, which will produce more CH light compounds, The products of combustion at this time can be burned in the cavity and will certainly trigger the detonation wave if the triggering shock intensity is large enough. The results provide a theoretical basis for understanding and mastering the concept and working process of a two-stage pulse detonation engine.