变螺距诱导轮出口角对氢泵流场及性能的影响  

The Influence of the Outlet Angles of Variable-Pitch Inducers on the Flow Field and Performance of Hydrogen Pumps

作　　者：贺雷[1] 曹耀 HE Lei;CAO Yao(Beijing Aerospace Propulsion Institute,Beijing,100076 China)

机构地区：[1]北京航天动力研究所,北京100076

出　　处：《科技资讯》2024年第2期88-90,共3页Science & Technology Information

摘　　要：为了研究变螺距诱导轮出口角对氢泵流场及性能的影响,以某型液体火箭发动机带变螺距诱导轮的氢泵作为研究对象,选取3种诱导轮出口角(轮缘),分别为12°、14°和16°,采用数值仿真的方法分析了不同诱导轮出口角对氢泵流场分布、水力性能和汽蚀性能的影响,并且进行试验验证。结果表明:适当增大诱导轮出口角,可以改善诱导轮出口的流场分布;在一定范围内增大诱导轮出口角,氢泵不同流量点的扬程和总效率都会获得提升,但是继续增大出口角到16°时,氢泵扬程提升效果减弱,且总效率有所下降;随着诱导轮出口角增大,氢泵的汽蚀性能先提升后降低。In order to study the effect of the outlet angles of variable-pitch inducers on the flow field and performance of hydrogen pumps,this paper takes a hydrogen pump with the variable-pitch inducer of a certain type of liquid rocket engine as the research object,selects three types of the outlet angles(wheel rims)of the inducer,which are 12°,14°and 16°,respectively,uses the numerical simulation method to analyze the influence of different outlet angles of the inducer on the flow field distribution,hydraulic performance and cavitation performance of the hydrogen pump,and carries out experimental verification.The results show that increasing the outlet angle of the inducer appropriately can improve the flow field distribution at the outlet of the inducer,increasing the outlet angle of the inducer within a certain range can improve the head and total efficiency of the hydrogen pump at different flow points,but when the outlet angle is further increased to 16°,the effect of improving the head of the hydrogen pump weakens and total efficiency decreases,and that the cavitation performance of the hydrogen pump first improves and then decreases with the increase of the outlet angle of the inducer.

关 键 词：氢泵 变螺距诱导轮出口角 水力性能 数值仿真 

分 类 号：V245[航空宇航科学与技术—飞行器设计]