Volume 23 Issue 5
May  2008
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WU Ji-ping, WANG Zhen-guo. Theoretical investigation on starting performance of supersonic ejector with secondary throat[J]. Journal of Aerospace Power, 2008, 23(5): 803-809.
Citation: WU Ji-ping, WANG Zhen-guo. Theoretical investigation on starting performance of supersonic ejector with secondary throat[J]. Journal of Aerospace Power, 2008, 23(5): 803-809.

Theoretical investigation on starting performance of supersonic ejector with secondary throat

  • Received Date: 2007-05-14
  • Rev Recd Date: 2007-10-23
  • Publish Date: 2008-05-28
  • A set of fast analysis methods for starting performance of second-throat supersonic ejector was presented.The method of characteristics was introduced to calculate the flow field after the primary nozzle exit,whilst Korst's recompression criterion was adopted to determine the corresponding cell pressure,and one-dimensional control volume method was employed to analyze the downstream flow field.The second-throat area ratio limit,the minimal starting pressure ratio and the corresponding cell pressure were obtained.The influences of primary flow specific heat ratio and three geometric parameters on the starting performance were investigated.The results indicate that lower cell pressure leads to higher minimal starting pressure ratio,and the consistency of the method is quite well.

     

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