离心压气机管式扩压器设计与计算分析  

Design and numerical simulation of pipe diffuser in centrifugal compressor

作　　者：王博[1] 严明[1] 

机构地区：[1]北京航空航天大学能源与动力学院航空发动机气动热力国家级重点试验室,北京100191

出　　处：《航空动力学报》2012年第6期1303-1311,共9页Journal of Aerospace Power

摘　　要：采用程序化建模方法,对离心压气机管式扩压器的三维几何造型进行参数化设计,并采用定常数值模拟的方法分析管式扩压器内流场特性,攻角特性,对影响管式扩压器性能的几何参数进行分析与优化,同时对照某原型叶片式扩压器,分析传统圆形进口管式扩压器的性能优劣,提出类椭圆进口管式扩压器的概念,并揭示其能够有效提高离心压气机性能的机理.Parameterized design for three-dimensional geometry of the pipe diffuser was preformed based on programmed model-construct method. The flow field and attack angle characteristics were investigated using time-averaged numerical method, and design parameters of the pipe diffuser were analyzed and optimized subsequently. Compared with the pro-totype vane diffuser, the performance of a pipe diffuser with traditional circle inlet was evaluated. Further study initiated a pipe diffuser with ellipse-like inlet which would expand the working range of centrifugal compressor, and suggested the mechanism of the improvement.

关 键 词：离心压气机 扩压器 管式扩压器 前掠 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]