Effect of fore/aft-loaded rotor on compressor stability under inlet circumferential distortion

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外文摘要：A modified small perturbation stability prediction model for axial compressors with cir-cumferential inlet distortions is established and applied to investigate the effect of fore/aft-loaded rotor on compressor stability under circumferentially distorted inlet conditions.The inlet total pres-sure distribution downstream of the distortion screen is measured in experiments and employed for simulations which are implemented via time-space spectral method.The stall inception prediction results via the stability model indicate that the compressor with aft-loaded rotor not only performs better in terms of stability under uniform inlet,but also maintains a larger stability margin under circumferentially distorted inlet.The experiments for compressors with fore-loaded and aft-loaded rotor are respectively carried out.The results validate the reliability of numerical simulations and the predicted conclusion that the aft-loaded rotor is beneficial for compressor stability.Besides,the ability of the developed theoretical model for compressor stability prediction under circumfer-ential distortions is confirmed.In addition,dynamic pressure signals at rotor tip measured in exper-iments illustrate that the circumferential distortion has little effect on the compressor stall pattern.

外文关键词：

Axial compressor stabilityInlet distortionBlade loadingSmall perturbationTime-space spectral method

作者：

Dakun SUN、Benhao GU、Fangfei NING、Dengke XU、Xiaofeng SUN

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作者单位：

School of Energy and Power Engineering,Beihang University,Beijing 102206,China

Research Institute of Aero-engine,Beihang University,Beijing 102206,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience Center for Gas Turbine Project,ChinaScience Center for Gas Turbine Project,ChinaChina Postdoctoral Science FoundationNational Science and Technology Major Projectc,ChinaNational Science and Technology Major Projectc,ChinaKey Laboratory of Pre-Research Management Centre,ChinaFundamental Research Funds for the Central Universities,ChinaFundamental Research Funds for the Central Universities,China

项目编号：

5230603652325602P2022-A-Ⅱ-002-001P2022-C-Ⅱ-003-0012022M720346Y2022-Ⅱ-0003-0006Y2022-Ⅱ-0002-00056142702200101YWF-23-Q-1009YWF-23-Q-1065

出版年：

2024

DOI：

10.1016/j.cja.2024.01.036

中国航空学报(英文版)

中国航空学会

中国航空学报(英文版)

CSTPCDEI

影响因子：0.847

ISSN：1000-9361

年,卷(期)：2024.37(5)