The Role of Tip Leakage Flow in Triggering Rotating Stall of a Low Speed Compressor under Inlet Distortion

作     者：Jingxuan Zhang Feng Lin Jingyi Chen Chaoqun Nie 

作者机构：School of Jet and Propulsion Beijing University of Aeronautics and Astronautics Institute of Engineering Thermophysics Chinese Academy of Sciences 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2009年第18卷第1期

页      面：33-39页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 0802[工学-机械工程] 

基　　金：The support of National Natural Science Foundation of China through Grant 50676094 and 50736007 are gratefully acknowledged 

主　　题：stall compressor RID TLV spike-like disturbance 

摘      要：The stall behavior in a single-stage low-speed axial compressor under rotating inlet distortion (RID) is investigatedin the first half of this paper. The tests demonstrate that the tip leakage flow (TLF) plays an important rolein triggering rotating stall. The tracking of the spike-like disturbances caused by the spillage of TLV indicates thatmost of such spike-like disturbances will be smeared by non-distorted sector and the growth of the spike-like disturbancesactually relate closely to how and how often the path of the propagating disturbances come across thepath of the rotating distorted sector. In the second half of this paper, micro air injections are applied to test the effectbehavior of TLF on stall inception. Contrasts to without micro air injections, the spike-like disturbances aremuch fewer, so the possibilities that spike-like disturbances may trigger rotating stall are fewer too. As a result,the compressor gets a lower mass flow rate at stall for both co-rotating inlet distortion and counter-rotating inletdistortion.