航空学报 > 2026, Vol. 47 Issue (12): 132862-132862   doi: 10.7527/S1000-6893.2025.32862

金属丝网机匣处理结构参数对压气机稳定性的影响机理

郑永健1, 付磊2, 刘若阳2, 马宁2, 张明1(), 董旭3, 孙大坤1, 孙晓峰1,3   

  1. 1.北京航空航天大学 能源与动力工程学院,北京 100191
    2.中国航空发动机研究院,北京 101304
    3.北京航空航天大学 航空发动机研究院,北京 100191
  • 收稿日期:2025-10-09 修回日期:2025-10-16 接受日期:2025-11-05 出版日期:2025-11-11 发布日期:2025-11-10
  • 通讯作者: 张明 E-mail:mingzhang@buaa.edu.cn

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

Yongjian ZHENG1, Lei FU2, Ruoyang LIU2, Ning MA2, Ming ZHANG1(), Xu DONG3, Dakun SUN1, Xiaofeng SUN1,3   

  1. 1.School of Energy and Power Engineering,Beihang University,Beijing 100191,China
    2.AECC Aero Engine Academy of China,Beijing 101304,China
    3.Research Institute of Aero-Engine,Beihang University,Beijing 100191,China
  • Received:2025-10-09 Revised:2025-10-16 Accepted:2025-11-05 Online:2025-11-11 Published:2025-11-10
  • Contact: Ming ZHANG E-mail:mingzhang@buaa.edu.cn

摘要:

为探究金属丝网机匣处理(WMCT)关键结构参数对压气机稳定性的影响规律与扩稳机制,针对WMCT轴向安装位置以及腔深开展研究。采用实验结合数值模拟的方法,研究WMCT在5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3个腔深的扩稳效果。结果表明:腔深对叶尖区域堵塞的缓解具有显著作用,且随着腔深增加扩稳效果逐渐增强;当腔深超过10 mm后,对扩稳改善效果影响较小。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。

关键词: 金属丝网机匣处理, 轴向位置, 腔深, 失速裕度, 扩稳机理

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

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