Volume 26 Issue 5
May  2011
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YU Jun-li, QIN Ya-xin, GAO Ge. Experimental investigation on effects of flame jet ignition on deflagration to detonation transition in tube[J]. Journal of Aerospace Power, 2011, 26(5): 1043-1047.
Citation: YU Jun-li, QIN Ya-xin, GAO Ge. Experimental investigation on effects of flame jet ignition on deflagration to detonation transition in tube[J]. Journal of Aerospace Power, 2011, 26(5): 1043-1047.

Experimental investigation on effects of flame jet ignition on deflagration to detonation transition in tube

  • Received Date: 2010-03-24
  • Rev Recd Date: 2010-07-12
  • Publish Date: 2011-05-28
  • A detonative tube filled with acetylene and air by flame jet ignition was designed to study deflagration to detonation transition.The detonative tube was one end opened and the other end closed.A pre-combustion chamber was installed at the closed end perpendicularly to detonative tube.Flame jet produced by spark plug ignition in pre-combustion ignited the mixture in detonative tube.Flame propagation velocity in duct was measured by a system based on photoelectric transition principle.Compared with spark plug ignition in tube wall,flame jet ignition can increase initial velocity in the tube and reduce the distance of deflagration to detonation transition.Through the experiments of the deflagration to detonation transition process in different experimental conditions,the mechanism that flame jet ignition can reduce the distance of deflagration to detonation transition was discussed.

     

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