Volume 32 Issue 4
Apr.  2017
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Numerical simulation of shock wave imploding detonation initiation in two-stage pulse detonation engine[J]. Journal of Aerospace Power, 2017, 32(4): 942-948. doi: 10.13224/j.cnki.jasp.2017.04.020
Citation: Numerical simulation of shock wave imploding detonation initiation in two-stage pulse detonation engine[J]. Journal of Aerospace Power, 2017, 32(4): 942-948. doi: 10.13224/j.cnki.jasp.2017.04.020

Numerical simulation of shock wave imploding detonation initiation in two-stage pulse detonation engine

doi: 10.13224/j.cnki.jasp.2017.04.020
  • Received Date: 2015-08-30
  • Publish Date: 2017-04-28
  • Ignition method and periodic pulse in two-stage pulse detonation engine(PDE) were computed by numerical simulation. Results showed that two zones with high temperature and high pressure were engendered by shock wave imploding in engine. Temperature and pressure of the second zone became much higher than the first one, which was the key point of ignition. Depending on temperature, pressure or Mach number improvement, detonation appeared in the unfired condition. With precondition of successful ignition, modulating was still necessary to get appropriate inlet condition which can keep periodic pulse. Periodic pulse with frequency of 300Hz appeared by the inlet temperature of 600 K, Mach number of 2.0 and pressure of 150kPa.

     

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