Volume 27 Issue 8
Aug.  2012
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JIA Zhen, WU Di, PIAO Ying. Effect of equivalence ratio on flow and combustion characteristics of super-sonic combustor with cavity[J]. Journal of Aerospace Power, 2012, 27(8): 1704-1711.
Citation: JIA Zhen, WU Di, PIAO Ying. Effect of equivalence ratio on flow and combustion characteristics of super-sonic combustor with cavity[J]. Journal of Aerospace Power, 2012, 27(8): 1704-1711.

Effect of equivalence ratio on flow and combustion characteristics of super-sonic combustor with cavity

  • Received Date: 2011-09-05
  • Publish Date: 2012-08-28
  • Numerical simulation on effect of equivalence ratio on flow field and combustion characteristics of supersonic combustor with cavity under the condition with/without chemical reactions was conducted by adjusting the fuel injection pressure to reach a certain equivalence ratio value.It is found that increasing equivalence ratio enhances combustion backpressure,expands the upstream boundary layer separation zone,and pushes shock train to the entrance of the combustor gradually.Also,enlarging equivalence ratio increases jet penetration depth gradually.In the field near fuel injector ,mixing performance was obviously enhanced by increasing equivalence ratio,while in the field far away from fuel injector,little effect was induced by equivalence ratio.In the aspects of total pressure loss and cavity drag coefficient,they had proportional relationships with equivalence ratio.

     

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