【摘要】 对小流量离心式压缩机内部流动进行了数值模拟,分析了进口叶片角,出口叶片角,叶顶间隙,扩压器出口直径等结构参数对压缩机气动性能的影响,通过内部流场分析探讨了这些参数对气动性能影响的内在机制。分析表明:适当减小叶片入口安装角,适当增大叶片出口安装角,适当减小叶顶间隙,适当减小扩压器出口直径,均可以在一定程度上提升离心压缩机性能。本文研究结果可供小流量离心式的结构优化设计参考。更多还原

【Abstract】 Numerical simulation of the internal flow of a small-flow centrifugal compressor was carried out, and the influence of structural parameters such as inlet blade angle, outlet blade angle, tip clearance, and diffuser outlet diameter on the aerodynamic performance of the compressor was analyzed.Through internal flow field analysis, the internal mechanism of the influence of these parameters on aerodynamic performance is discussed.Analysis shows that: appropriately reducing the blade inlet installation angle, appropriately increasing the blade outlet installation angle, appropriately reducing the blade tip clearance, and appropriately reducing the diffuser outlet diameter, all of which can improve the performance of the centrifugal compressor to a certain extent.The research results in this paper can be used as a reference for the optimization design of the small flow centrifugal structure.更多还原