Volume 34 Issue 3
Mar.  2019
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Effects of fuel distribution on propagation of rotating detonation wave[J]. Journal of Aerospace Power, 2019, 34(3): 513-520. doi: 10.13224/j.cnki.jasp.2019.03.001
Citation: Effects of fuel distribution on propagation of rotating detonation wave[J]. Journal of Aerospace Power, 2019, 34(3): 513-520. doi: 10.13224/j.cnki.jasp.2019.03.001

Effects of fuel distribution on propagation of rotating detonation wave

doi: 10.13224/j.cnki.jasp.2019.03.001
  • Received Date: 2018-05-24
  • Publish Date: 2019-03-28
  • To study the effects of fuel distribution on the propagation of rotating detonation wave, two injection schemes of H2/air were investigated by simulations and experiments. The mixing of H2 and air was simulated in rotating detonation chamber, and homogeneity degree was proposed to quantitatively evaluate the mixing. The relationship of homogeneity degree and axial distance was revealed for the two injection schemes. Rotating detonation wave was studied by experiments, and its propagation velocity, stability and equivalent ratio limit were analyzed for the two injection schemes. The results indicated that the homogeneity degree increased significantly in the front portion of chamber when fuel injection holes moved forward. With the increase of the homogeneity degree, the propagation velocity and stability of rotating detonation wave were dramatically increased, and the lower limit of equivalent ratio expanded from 1.08 to 0.57. These results can provide references for the design of injection schemes of rotating detonation engine.

     

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