为探究金属丝网机匣处理(Wire Mesh Casing Treatment, WMCT)关键结构参数对压气机稳定性的影响规律与扩稳机制，本文针对WMCT轴向安装位置以及腔深开展了研究。采用实验结合数值模拟方法，首先研究了WMCT在五个轴向位置的扩稳效果，并结合三维流场结构及宏观性能参数变化规律，分析了轴向位置对压气机稳定性的作用机制。对于覆盖叶尖前缘的WMCT，通过减小叶尖泄漏涡与叶片吸力面之间的夹角，延缓了叶背分离的发生；对于叶中附近且未覆盖叶尖前缘的情况，通过重新组织WMCT覆盖区的流动结构，阻断叶尖泄漏涡在叶片通道中的发展，延缓了失速的起始。当轴向位置为20 mm时扩稳效果相对最优，在此基础上研究了三个腔深的扩稳效果。研究表明，腔深对叶尖区域堵塞的缓解具有显著作用，且随着腔深增加效果逐渐增强。当腔深超过10 mm后，进一步增加对改善效果影响较小。在扩稳机理方面，WMCT通过调节转子叶片定常载荷分布以提升流动稳定性，同时通过抑制非定常失速先兆的扰动幅值来扩大压缩系统稳定裕度。

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 suppressing the amplitude of unsteady stall precursor disturbances, thus expanding the stability margin of the compression system.