Volume 32 Issue 6
Jun.  2017
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Effect of nozzle damage on performance of annular backflow combustor[J]. Journal of Aerospace Power, 2017, 32(6): 1335-1341. doi: 10.13224/j.cnki.jasp.2017.06.008
Citation: Effect of nozzle damage on performance of annular backflow combustor[J]. Journal of Aerospace Power, 2017, 32(6): 1335-1341. doi: 10.13224/j.cnki.jasp.2017.06.008

Effect of nozzle damage on performance of annular backflow combustor

doi: 10.13224/j.cnki.jasp.2017.06.008
  • Received Date: 2015-09-28
  • Publish Date: 2017-06-28
  • The effects of different atomization performance caused by nozzle damage on the annular backflow combustor performance were studied by using Fluent software. Three-dimensional two-phase spray combustion flow fields in a model annular backflow combustor were numerically simulated using realizable k-ε model, DPM (discrete phase model) with UDF(user defined function) subroutines tracking fuel trajectory, n-heptane as surrogate fuel and laminar flamelet model. The results reveal that the numerical method is reasonable to predict combustion flow of annular backflow combustor. The outlet temperature non-uniformity deterirated with the atomization performances change caused by nozzle damage. And the combustion efficiency also decreased.When the fuel flow rate was reduced by 19%, the performance of the combustor was not conformity with the operational requirements.

     

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