Volume 30 Issue 1
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FU Zhen-bo, LIN Yu-zhen, ZHANG Chi, XU Quan-hong. Experiment of combustion performance of internally-staged combustor pilot stage[J]. Journal of Aerospace Power, 2015, 30(1): 46-52. doi: 10.13224/j.cnki.jasp.2015.01.007
Citation: FU Zhen-bo, LIN Yu-zhen, ZHANG Chi, XU Quan-hong. Experiment of combustion performance of internally-staged combustor pilot stage[J]. Journal of Aerospace Power, 2015, 30(1): 46-52. doi: 10.13224/j.cnki.jasp.2015.01.007
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Experiment of combustion performance of internally-staged combustor pilot stage

doi: 10.13224/j.cnki.jasp.2015.01.007

  • 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: 2013-08-28
  • Publish Date: 2015-01-28
    Abstract
  • A internally-staged combustor was studied. The combustion performance experiments using a single module rectangular combustor were performed under the idle condition of a large thrust aero-engine. The effects of flare angles of pilot swirl cup, step heights and pilot airflow rates on pollution emissions, combustion efficiency and lean blowout fuel/air ratio (LBO FAR) were investigated experimentally. The experimental results indicate that under the idle condition, NOx emission can decrease by 42% with CO, unborn hydrocarbon (UHC) emissions increasing by 2.5 times, combustion efficiency decreasing by 1.75% and LBO FAR increasing from 0.0038 to 0.0067 when the flare angle of pilot swirl cup increases from 60 degree to 100 degree; NOx emission can decrease by 37% with CO, UHC emissions increasing by 1.5 and 1.2 times, respectively, combustion efficiency decreasing by 1.32% and LBO FAR increasing from 0.0042 to 0.0061 when the step height decreases by 24%; NOx emission can increase by 13.5% with CO, UHC emissions decreasing by 55.6% and 38.9%, respectively, combustion efficiency increasing by 1.46% and LBO FAR decreasing from 0.0061 to 0.0051 when the pilot airflow rate decreases by 20%.

     

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