为了研究分流叶片对氦氙混合工质离心压气机性能的影响规律，通过数值模拟计算的方法开展了不同分流叶片长度和周向位置的氦氙混合工质离心压气机的流场和特性研究，给出了分流叶片长度和周向位置的最佳设计方案。研究结果表明：分流叶片的长度和周向位置对压气机的性能影响显著，过短的分流叶片不能起到改善流场的作用，过长的分流叶片会造成较大的摩擦损失，过于靠近压力面和吸力面的叶片不能有效抑制间隙泄漏涡的掺混和扩散；使氦氙混合工质离心压气机的效率最佳的分流叶片位置为l=70%，θ=40%，此时压气机的压比为2.502，效率为91.67%。

In order to explore the influence rule of splitter blade length and circumferential position on the performance of heliumxenon mixed working medium centrifugal compressor,the flow field and characteristics of heliumxenon mixed working medium centrifugal compressor with different splitter blade lengths and circumferential positions were investigated by numerical simulation calculation methods, and the optimal design scheme of the splitter blade length and circumferential position was given.The research results show that the length and circumferential position of splitter blade have significant effect on the performance of compressor, too short splitter blade can not improve the flow field, too long splitter blade will cause great friction loss, the blades too close to the pressure surface and suction surface can not effectively inhibit the mixing and diffusion of clearance leakage vortex.The splitter blade position available for the optimal efficiency of heliumxenon mixed working medium centrifugal compressor is l=70% and θ=40%.At this time, the pressure ratio of the compressor is 2.502, and the efficiency is 91.67%.

TH452

中央高校基本科研业务费专项基金(3072021CFT0301)；上海空间发动机研究中心基金(17DZ2280800)