Volume 27 Issue 5
May  2012
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Article Navigation >  Journal of Aerospace Power  > 2012  >  27(5): 1015-1021
SHAN Xiao-ming, YAO Zheng-rong, YUE Lin, HUANG Jin-quan. Wavelet analysis of features of rotating stall in a combined compressor[J]. Journal of Aerospace Power, 2012, 27(5): 1015-1021.
Citation: SHAN Xiao-ming, YAO Zheng-rong, YUE Lin, HUANG Jin-quan. Wavelet analysis of features of rotating stall in a combined compressor[J]. Journal of Aerospace Power, 2012, 27(5): 1015-1021.
shu

Wavelet analysis of features of rotating stall in a combined compressor

  • 1.

    College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • 2.

    China Aviation Powerplant Research Institute, Aviation Industry Corporation of China, Zhuzhou Hunan 412002, China

  • 3.

    College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • Received Date: 2011-07-02
  • Publish Date: 2012-05-28
    Abstract
  • A fast response pressure probe was applied to test the rotating stall and surge of an axial and centrifugal combined compressor.The pressure signals were analyzed by utilizing the method of the time-frequency analysis based on the Morlet and singular value decomposition.The experimental results indicate that,at the stable condition,there are many main frequency components in the frequency domain but the amplitude is small,while,at the stall condition,the energy of the frequency components becomes larger.In the process of unstall to stall,the larger amplitude of the pressure fluctuation does not produced by the stall cell in this compressor.The compressor enters smoothly into the full stall condition from the modal wave.2 stall cells are measured around annulus and the propagation speed of the stall cell is from 44.8% to 45.9% rotor speed.

     

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