Volume 30 Issue 5
May  2015
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Article Navigation >  Journal of Aerospace Power  > 2015  >  30(5): 1092-1098
DAI Wei, LIN Yu-zhen, ZHANG Chi. Effects of swirl number of second stage radial swirler on combustor ignition and lean blow-out performances[J]. Journal of Aerospace Power, 2015, 30(5): 1092-1098. doi: 10.13224/j.cnki.jasp.2015.05.009
Citation: DAI Wei, LIN Yu-zhen, ZHANG Chi. Effects of swirl number of second stage radial swirler on combustor ignition and lean blow-out performances[J]. Journal of Aerospace Power, 2015, 30(5): 1092-1098. doi: 10.13224/j.cnki.jasp.2015.05.009
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Effects of swirl number of second stage radial swirler on combustor ignition and lean blow-out performances

doi: 10.13224/j.cnki.jasp.2015.05.009

  • National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 2013-11-27
  • Publish Date: 2015-05-28
    Abstract
  • Twin-swirler is used as a major form in aero-engine combustor dome to make a recirculation zone. The effects of the swirl number of the second stage radial swirler on ignition and combustion stability performance were mainly studied. The numerical simulation results were validated well with the design parameters of the second stage radial swirler. Experimental studies show that the swirl number of the second stage radial swirler has no effect on the combustor ignition performance. However, the decrease of this swirl number will obviously improve the lean blow-out performance. The entrainment effect of swirl would impact the flame stabilization in the recirculation zone. Decreasing swirl number of the second stage radial swirler can increase the downstream entrainment and optimize the matching between the flow and flame in the recirculation zone, and this is more beneficial to improve the combustion stability.

     

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