Effect of wire mesh casing treatment on axial compressor performance and stability  

作　　者：Ming ZHANG Jiaming ZHANG Jiahao HU Xu DONG Dakun SUN Xiaofeng SUN 

机构地区：[1]School of Energy and Power Engineering,Beihang University,Beijing 100191,China [2]Beihang Hangzhou Innovation Institute Yuhang,Hangzhou 310023,China [3]National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics,Beihang University,Beijing 100191,China

出　　处：《Chinese Journal of Aeronautics》2024年第3期60-76,共17页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52325602 and U2241276);the Science Center for Gas Turbine Project,China(Nos.P2022-A-Ⅱ-002-001,P2022-C-Ⅱ-001-001 and P2022-CⅡ-003-001);the National Science and Technology Major Project,China(No.2017-Ⅱ-0005-0018);supported by the Key Laboratory of Pre-Research Management Centre,China(No.6142702200101)。

摘　　要：In this paper,a kind of Wire Mesh Casing Treatment(WMCT)is proposed to improve the stable operating range of the compressor.In contrast to the traditional circumferential groove,as for WMCT,a layer of wire mesh is laid on the surface of the circumferential groove.Parametric studies were conducted on the low-speed axial flow compressor,including the groove width,axial location,and mesh count.The optimum axial location for WMCT is related to its groove width.A higher wire mesh count results in a smaller compressor stall margin improvement.Steady simulations were carried out to study the effect of WMCT on the flow structure of the compressor.The wire mesh in the WMCT has a certain flow resistance,which restricts the flow into and out of the groove.Due to the WMCT,the flow parameter in the tip region of the rotor is less sensitive to changes in the operating conditions of the compressor.The WMCT causes the rotor tip blade loading to shift backward,inhibiting the formation of spill forward of the leakage flow,and thus improving the stability of the compressor.The flow resistance on the groove surface is a new degree-of-freedom for the casing treatment designer.

关 键 词：Axial compressor Wire mesh casing treatment Tip clearance flow Stall margin Blade loading 

分 类 号：V232[航空宇航科学与技术—航空宇航推进理论与工程]