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以某典型负荷离心压气机径向扩压器为例,采用数值模拟的方法,在级环境下分析了径向扩压器前加载、后加载以及叶根前加载叶尖后加载三种负荷分布对离心压气机总体性能的影响;并通过对比分析扩压器内二次流等参数,讨论了负荷分布影响的内在机制.对比计算结果表明,叶根前加载叶尖后加载的负荷分布形式能够降低扩压器的流动损失,对离心压气机的总性能更为有利.
Taking a typical centrifugal compressor radial load diffuser as an example, numerical simulation method was used to analyze the load distribution of the radial diffuser before loading and after loading and after loading the tip of a blade in a cascade environment On the performance of centrifugal compressor, the internal mechanism of the influence of load distribution is discussed by comparing and analyzing the secondary flow parameters in the diffuser.Comparison results show that the load distribution form of the post-blade tip load can be Reducing the flow loss of the diffuser is more favorable for the overall performance of the centrifugal compressor.