水燃比对水冲压发动机性能影响数值模拟与试验研究  

Numerical and Experiment Studies on Water Ramjet with Effect of Water-fuel Ratio

作　　者：韩超[1] 夏智勋[1] 胡建新[1] 赵宁[1] 方丁酉[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：《国防科技大学学报》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)

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.

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 

分 类 号：V430[航空宇航科学与技术—航空宇航推进理论与工程]