Volume 32 Issue 9
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Effects of deflector angle on initiating detonation by shock wave focusing[J]. Journal of Aerospace Power, 2017, 32(9): 2118-2124. doi: 10.13224/j.cnki.jasp.2017.09.010
Citation: Effects of deflector angle on initiating detonation by shock wave focusing[J]. Journal of Aerospace Power, 2017, 32(9): 2118-2124. doi: 10.13224/j.cnki.jasp.2017.09.010
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Effects of deflector angle on initiating detonation by shock wave focusing

doi: 10.13224/j.cnki.jasp.2017.09.010
  • Received Date: 2016-09-09
  • Publish Date: 2017-09-28
    Abstract
  • In order to investigate the effect of annular jet inlet deflector angle on initiating detonation by shock wave focusing in a twostage pulse detonation engine, initiating detonation with different deflector angles were simulated with H2/O2/N2 mixture. Cold experimental was also carried out on the effect of deflector angle on initiating detonation by shock wave focusing. The results indicate that, as deflector angle increases, the jet collision temperature and jet collison pressure is higher, the jet collision time is earlier and initiating detonation is easier, but the shock wave focusing time remains unchanged when the deflector angle is bigger than 11°. And as deflector angle increases, airflow oscillating frequency in the concave cavity increases and dynamic pressure amplitude at the bottom of the cavity decreases.

     

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