Volume 36 Issue 12
Dec.  2021
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Article Navigation >  Journal of Aerospace Power  > 2021  >  36(12): 2568-2577
CHEN Sumin, JIANG Lei, WANG Tong, HU Hongbin, WANG Bohan, JIANG Xiangyu. Effects of swirl cup structure on fuel atomization particle size of fuel[J]. Journal of Aerospace Power, 2021, 36(12): 2568-2577. doi: 10.13224/j.cnki.jasp.20200547
Citation: CHEN Sumin, JIANG Lei, WANG Tong, HU Hongbin, WANG Bohan, JIANG Xiangyu. Effects of swirl cup structure on fuel atomization particle size of fuel[J]. Journal of Aerospace Power, 2021, 36(12): 2568-2577. doi: 10.13224/j.cnki.jasp.20200547
shu

Effects of swirl cup structure on fuel atomization particle size of fuel

doi: 10.13224/j.cnki.jasp.20200547
  • 1.

    Advanced Gas Turbine Laboratory，Institute of Engineering Thermophysics，Chinese Academy of Sciences，Beijing 100190，China

  • 2.

    Key Laboratory of Advanced Energy and Power，Institute of Engineering Thermophysics，Chinese Academy of Sciences，Beijing 100190，China

  • 3.

    Innovation Academy for Light-duty Gas Turbine，Chinese Academy of Sciences，Beijing 100190，China

  • 4.

    School of Engineering Science，University of Chinese Academy of Sciences，Beijing 100049，China

  • Received Date: 2020-12-23
  • Publish Date: 2021-12-28
    Abstract
  • In order to deeply study the effects of inlet parameters，swirl cup structures and axial coordination of fuel nozzle and Venturi of swirl cup on the atomization particle size of aviation kerosene，the LSA （laser size analyzer）-Ⅲ was used to measure the Sauter mean diameter （SMD） at 35 mm downstream the outlet of the co-rotating axial swirl cup under ambient temperature and pressure.The results showed that with the increase of the total pressure loss coefficient of the swirl cup，the SMD of fuel decreased，while the decreasing trend slowed down.The SMD was small near the case of 35° vane installation angle.The inner and outer swirling intensity should be matched with each other，which together could affect the fuel pre-filming and fuel sheet breakup.The Venturi throat diameter affected the inner swirling intensity and the quality of film formation.While the ratio between the Venturi throat diameter and Venturi length was within the range of 1.04-1.13，the SMD was small.The spray diffusion was restricted by the sleeve divergence section.Either large or small divergence angle may lead to an increase in fuel SMD.The position of fuel nozzle and the Venturi affected the quality of liquid film breaking.

     

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