水冲压发动机燃烧稳定性数值研究  

Numerical study on combustion stability for water ramjet

作　　者：韩超[1] 夏智勋[1] 胡建新[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《火箭推进》2008年第6期27-30,共4页Journal of Rocket Propulsion

摘　　要：建立了水冲压发动机燃烧稳定性计算模型,对一次进水水冲压发动机燃烧室内流场进行数值模拟。研究了燃烧室长度、水燃比、液滴直径等因素对水冲压发动机燃烧稳定性的影响。研究表明,适当增加燃烧室长度、采用多次进水以减小局部水燃比并选取适当的雾化器,有利于水冲压发动机的稳定燃烧。The flow field of a single injection water ramjet was calculated based on the model which was established in the paper. Effects of chamber length, water-fuel ratio and droplet size on combustion stability were researched. It is shown that increasing chamber length, multiple water injection to decrease local water-fuel ratio and choosing proper atomizer will benifit combustion stability.

关 键 词：水冲压发动机 燃烧不稳定 数值模拟 

分 类 号：V433.9[航空宇航科学与技术—航空宇航推进理论与工程]