高负荷离心压气机扩压器叶片前缘结构分析

推进技术 ›› 2011, Vol. 32 ›› Issue (2): 175-181.

高负荷离心压气机扩压器叶片前缘结构分析

王毅,卢新根,赵胜丰,朱俊强

中国科学院工程热物理研究所, 北京 100190 ; 中国科学院研究生院,北京 100190;中国科学院工程热物理研究所, 北京 100190;中国科学院工程热物理研究所, 北京 100190 ; 中国科学院研究生院,北京 100190;中国科学院工程热物理研究所, 北京 100190

发布日期:2021-08-15
作者简介:王毅(1980—),男,博士生,研究领域为叶轮机气动热力学。E-mail:wangyi@mail.etp.ac.cn
基金资助:
国家“八六三”项目资助(2007AA050503)；国际合作专题项目(2010DFB70620)。

Effects of diffuser blade geometry at leading edge on a highly-loaded centrifugal compressor

Inst. of Engineering Thermophysics, Academia Sinica, Beijing 100190, China;Graduate School of the Chinese Academy of Sciences, Beijing 100190,China;Inst. of Engineering Thermophysics, Academia Sinica, Beijing 100190, China;Inst. of Engineering Thermophysics, Academia Sinica, Beijing 100190, China;Graduate School of the Chinese Academy of Sciences, Beijing 100190,China;Inst. of Engineering Thermophysics, Academia Sinica, Beijing 100190, China

Published:2021-08-15

摘要/Abstract

摘要： 为拓宽离心压气机稳定工作范围,以某高负荷离心压气机为研究对象,对径向扩压器叶片前缘进行盘侧开槽处理,借助数值模拟手段,探讨了开槽处理对离心压气机性能和稳定工作范围的影响,并对开槽结构进行了参数化研究,确定了主要开槽参数对离心压气机的影响。数值计算表明,径向扩压器前缘盘侧开槽能够在一定程度上提高离心压气机的稳定工作裕度,但同时伴随着压气机性能的降低。详细对比分析了开槽结构引入前后离心压气机内部流场结构,揭示了径向扩压器叶片前缘开槽提高离心压气机稳定工作裕度机理。

关键词: 离心压气机;径向扩压器;叶片开槽处理;数值仿真;稳定工作范围

Abstract: To extend the stable operating range of centrifugal compressor, a series of numerical simulations were performed for a highly-loaded centrifugal compressor with slotted radial diffuser blade at the bottom of leading edge, and the effects of slotted radial diffuser blade on performance and stable operating range of the centrifugal compressor were investigated in detail. In addition, parametric studies on slot depth and slot width were conducted in order to explore the key role parameters for optimum performance. The simulation results indicate that slotted radial diffuser blade at leading edge could extend the stable operating range, but slightly decrease the pressure ratio and efficiency. Detailed analysis of the flow visualization has exposed the different tip flow topologies between the cases with original radial diffuser and slotted radial diffuser, therefore led to some preliminary conclusions as to the flow physics involved in the stall margin improvements afforded by the use of slotted radial diffuser. 

Key words: Centrifugal compressor; Radial diffuser; Blade slotted treatment; Numerical simulation; Stable operating range

王毅,卢新根,赵胜丰,朱俊强. 高负荷离心压气机扩压器叶片前缘结构分析[J]. 推进技术, 2011, 32(2): 175-181.