Numerical simulation of rotating stall in a subsonic compressor |
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| Institution: | 1. Applied Aerodynamics Department, ONERA, 92320 Châtillon, France;2. LMFA (UMR CNRS 5509), 69134 Ecully, France;3. LEMFI, 91405 Orsay, France;1. Turbomachinery Laboratory, State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;2. Corporate Research & Development, IHI Corporation, Yokohama, Japan;1. Science and Technology on Complex Aviation Systems Simulation Laboratory, 6 East Jinbei Road, Fengtai District, 100076 Beijing, China;2. School of Aeronautics Engineering, Air Force Engineering University, 1 Balin Road, Baqiao District, 710038 Xian, China;1. Faculty of Water Resources and Hydroelectric Engineering, Xi''an University of Technology, Xi''an 710048, China;2. School of Power and Energy, Northwestern Polytechnical University, Xi''an 710072, China;3. Collaborative Innovation Center of Advanced Aero-Engine, Beijing 100191, China;4. State Key Laboratory of Eco-hydraulic in Northwest Arid Region, Xi''an 710048, China;1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China;2. Kangyue Technology Co., Ltd., Shandong Province, China |
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| Abstract: | Rotating stall is generally the first instability met in multi-stages compressors, before surge. This 3D phenomenon is characterized by one or more cells of stalled flow which rotate at a fraction of the rotor speed ω. The present paper deals with the simulation and the analysis of the rotating stall in a stage of a subsonic compressor.The configuration used for the study is an axial single-stage low speed compressor. A numerical simulation is carried out with a quasi three dimensional in-house code which solves the Navier–Stokes equations on a stream surface. The simulation shows a rotating stall with two cells which rotate at 48% of the rotor speed. Particular emphasis is laid on the pre stall phenomena analysis. The spatial mode which is responsible for the rotating stall cells number is identified many revolutions before the stall inception thanks to a Fourier analysis. However, further investigations are needed in order to identify the destabilizing mode origin. |
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