Two-stage High Vacuum Supersonic Air Ejector Numerical Study
The research of two-stage high vacuum supersonic air ejector has very important academic value and application prospect in hypersonic propulsion and aerospace ground testing. This paper presents a two-stage high vacuum supersonic air ejector configuration and simulates the flow field by solving two-dimensional Navier-stokes equations with time-dependent method. Results show that two-stage ejector requires less work pressure and provides lower vacuum degree compared to single-stage ejector; the load flow has a significant influence on the flow field structure; lower total pressure leads to the shock wave structure promoting inward through the diffuser; when fixing one stage at a suitable state, the other stage presents a wide adjustment range that is conducive to the fluctuation of the load flow and improvement of the injection coefficient.
two-stage supersonic ejector pressure matching injection coefficient numerical simulation
Wang Zonghao Zou Jianjun
College of Aerospace and Material Engineering, National University of Defense Technology, Changsha, College of Aerospace and Material Engineering,National University of Defense Technology, Changsha, 4
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
1139-1142
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）