金属丝网机匣处理结构参数对压气机稳定性的影响机理

doi:10.7527/S1000-6893.2025.32862

Abstract

Abstract:

To explore the influence and stabilization mechanism of key structural parameters of the Wire Mesh Casing Treatment （WMCT） on compressor stability， this paper investigates the effects of the axial installation position and cavity depth of WMCT. Based on experimental and numerical simulation methods， the stabilization effects of WMCT at five axial positions were first studied. Combined with the variation laws of three-dimensional flow field structures and macroscopic performance parameters， the mechanism of the axial position on compressor stability was analyzed. For WMCT covering the rotor tip leading edge， it reduces the angle between the tip leakage vortex and the blade suction surface， delaying the occurrence of flow separation on the pressure side. For the case near the mid-span region without covering the tip leading edge， WMCT reorganizes the flow structure in the covered area， blocks the development of the tip leakage vortex in the blade passage， and delays the stall inception. When the axial position is 20 mm， the stabilization effect is relatively optimal. On this basis， three cavity depths were further studied. The results show that cavity depth has a significant effect on relieving the blockage in the tip region， and the effect becomes stronger with increasing depth. When the cavity depth exceeds 10 mm， further increase has little impact. Regarding the stabilization mechanism， WMCT improves flow stability by adjusting the steady aerodynamic load distribution of the rotor blades， and expands the stability margin of the compression system by suppressing the amplitude of unsteady stall precursor disturbances.

Key words: wire mesh casing treatment, axial position, cavity depth, stall margin, stabilization mechanism

CLC Number:

V231

Yongjian ZHENG, Lei FU, Ruoyang LIU, Ning MA, Ming ZHANG, Xu DONG, Dakun SUN, Xiaofeng SUN. Influence mechanisms of wire mesh casing treatment structural parameters on compressor stability[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(12): 132862.

Figures/Tables 23

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参数	转子	静子
叶片数	20	27
机匣内径/mm	600	600
进口轮毂比	0.577	0.699
叶尖间隙/mm	0.6~0.8	0.5
展弦比	1.18	1.40
设计转速/（r·min^-1）	2 930
级压比	1.026 7
级压升系数	0.48

Influence mechanisms of wire mesh casing treatment structural parameters on compressor stability

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