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

作     者：Dakun SUN Benhao GU Fangfei NING Dengke XU Xiaofeng SUN Dakun SUN;Benhao GU;Fangfei NING;Dengke XU;Xiaofeng SUN

作者机构：School of Energy and Power EngineeringBeihang UniversityBeijing 102206China Research Institute of Aero-engineBeihang UniversityBeijing 102206China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2024年第37卷第5期

页      面：199-213页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：The research presented here was supported by the National Natural Science Foundation of China(Nos.52306036 and 52325602) the Science Center for Gas Turbine Project,China(Nos.P2022-A-II-002-001 and P2022-C-II-003-001) the Project funded by China Postdoctoral Science Foundation(No.2022M720346) the National Science and Technology Major Projectc,China(Nos.Y2022-II-0003-0006 and Y2022-II-0002-0005) Also,the research is supported by the Key Laboratory of Pre-Research Management Centre,China(No.6142702200101) the Fundamental Research Funds for the Central Universities,China(Nos.YWF-23-Q-1009 and YWF-23-Q-1065) 

主　　题：Axial compressor stability Inlet distortion Blade loading Small perturbation Time-space spectral method 

摘      要：A modified small perturbation stability prediction model for axial compressors with circumferential inlet distortions is established and applied to investigate the effect of fore/aft-loaded rotor on compressor stability under circumferentially distorted inlet *** inlet total pressure distribution downstream of the distortion screen is measured in experiments and employed for simulations which are implemented via time-space spectral *** 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 *** experiments for compressors with fore-loaded and aft-loaded rotor are respectively carried *** results validate the reliability of numerical simulations and the predicted conclusion that the aft-loaded rotor is beneficial for compressor ***,the ability of the developed theoretical model for compressor stability prediction under circumferential distortions is *** addition,dynamic pressure signals at rotor tip measured in experiments illustrate that the circumferential distortion has little effect on the compressor stall pattern.