摘要
为了研究水燃比对二次进水水冲压发动机比冲性能的影响规律,建立了发动机补燃室两相反应模型,对镁基水冲压发动机进行了数值模拟,获得了发动机比冲、喷管出口温度及出口速度随水燃比变化趋势,在此基础上进行了水冲压发动机地面直连式试验研究。结果表明,存在最佳水燃比使二次进水水冲压发动机比冲性能较优。
A two-phase reaction model of the secondary combustor was established to study the effect of water-fuel ratio on engine performance of magnesium-based water ramjet with twice water penetration. The change tendency of specific impulse, temperature and velocity of nozzle exit were obtained with water-fuel ratio. Direct-connected tests were carried out in order to validate the correctness of the numerical simulation. The result shows that there exists the optimum water-fuel ratio, which can improve the performance of water ramjet.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2009年第4期117-121,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(50376071)
关键词
水冲压发动机
比冲性能
水燃比
数值模拟
直连式试验
water ramjet
specific impulse
water-fuel ratio
numerical simulation
direct-connected test
