高负荷离心压气机管式扩压器特点及机理分析  

Analysis of characteristic and mechanism of pipe diffuser for a highly loaded centrifugal compressor

作　　者：王毅[1,2] 赵胜丰[1,2] 卢新根[1] 朱俊强[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院研究生院,北京100190

出　　处：《航空动力学报》2011年第3期649-655,共7页Journal of Aerospace Power

基　　金：国家高技术研究发展计划(2007AA050503);国际科技合作项目(2010DFB70620)

摘　　要：以某高负荷离心压气机为研究对象,进行管式扩压器设计,借助于数值模拟的方法,对影响扩压器性能的重要参数———喉部面积进行参数化研究,并详细分析了管式扩压器特殊的进口结构对压气机内部流场的影响,初步探讨了管式扩压器喉部设计准则,摸清其提高效率扩大稳定工作范围的机理.Pipe diffuser was designed for a highly loaded centrifugal compressor in this paper.Parametric studies on the throat area of pipe diffuser were completed through numerical simulation.And detailed analyses of the flow visualization in the compressor have exposed the different radial diffuser blade flow topologies between channel diffuser and pipe diffuser.Furthermore,this paper made some preliminary conclusions as for the design criteria of pipe diffuser throat and the flow physics involved in the stall margin improvements afforded by the use of pipe diffuser.

关 键 词：离心压气机 管式扩压器 高负荷 喉部面积 数值模拟 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]