Volume 31 Issue 11
Nov.  2016
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TIAN Liang, XU Xu, ZHU Shao-hua. Influence of injection location on upstream struts in a dual-struts supersonic combustor[J]. Journal of Aerospace Power, 2016, 31(11): 2613-2620. doi: 10.13224/j.cnki.jasp.2016.11.007
Citation: TIAN Liang, XU Xu, ZHU Shao-hua. Influence of injection location on upstream struts in a dual-struts supersonic combustor[J]. Journal of Aerospace Power, 2016, 31(11): 2613-2620. doi: 10.13224/j.cnki.jasp.2016.11.007

Influence of injection location on upstream struts in a dual-struts supersonic combustor

doi: 10.13224/j.cnki.jasp.2016.11.007
  • Received Date: 2015-01-30
  • Publish Date: 2016-11-28
  • Directly-connected test on dual-struts supersonic combustor fueled by liquid kerosene was made to test the influence of three different injection locations in upstream strut on combustion. The wall pressures were processed by one-dimensional impulse analysis method. Results showed that the position of thermal coking was influenced by the injection location in the upstream strut. Moreover, when fuel was injected respectively from the first and the second positions in upstream strut, the wall pressure distributions were nearly the same, but 6.3%-7.5% and 16.7%-17.4% higher than from the third injection location in conbustion efficiency and in thrust separately. Test results showed that fuel injected from the first injection position in the upstream strut could hold steady combustion but couldn't do from the third one. The results of simulation showed that the fuel had a high mixing efficiency with the air combusted steadily when the L≥80mm, where L was the distance between injection position and trail of strut.

     

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