The Influence of the Outlet Angles of Variable-Pitch Inducers on the Flow Field and Performance of Hydrogen Pumps
In order to study the effect of the outlet angles of variable-pitch inducers on the flow field and perfor-mance 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 hy-drogen pump,and carries out experimental verification.The results show that increasing the outlet angle of the in-ducer 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 im-proves and then decreases with the increase of the outlet angle of the inducer.
NETL
NSTL
万方数据
维普
