Volume 27 Issue 2
Feb.  2012
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ZHAO Ben, YANG Ce, ZHANG Ji-zhong, LI Du, Qi Ming-xu. Stator wake variability in a combined compressor[J]. Journal of Aerospace Power, 2012, 27(2): 410-418.
Citation: ZHAO Ben, YANG Ce, ZHANG Ji-zhong, LI Du, Qi Ming-xu. Stator wake variability in a combined compressor[J]. Journal of Aerospace Power, 2012, 27(2): 410-418.
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Stator wake variability in a combined compressor

  • 1.

    School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

  • 2.

    Science and Technology on Diesel Engine Turbocharging Laboratory, China North Engine Research Institute, Datong Shanxi 037036, China

  • Received Date: 2011-03-11
  • Rev Recd Date: 2011-09-16
  • Publish Date: 2012-02-28
    Abstract
  • The unsteady flow in a combined compressor,which consists of axial flow and centrifugal compressor impellers,was simulated numerically at mass flow of 1.15kg/s and speed of 60kr/min (design point).The objective was an in-depth analysis of the factors caused stator wake variability.In addition,a method about changing cycle and amplitude of stator wake variability was presented.The results indicate that:stator wake variability is influenced by geometric factor,up- and downstream moving rows.The blade passaging frequencies of up- and downstream rotor are related with the cycle of stator wake variability.Note that the equal blade passaging frequencies in all stages,the clocking positions have much effect on the amplitudes of stator wake variability.Moreover,along the blade’s highness,the amplitudes of stator wake variability are different,which located at low span was greater than that at mid-span and high-span.

     

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