Volume 34 Issue 12
Dec.  2019
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WANG Zhikai, CHEN Sheng, LIU Ran. Experiment on effects of airflow ratio on spray characteristics of dual-axial swirl cup[J]. Journal of Aerospace Power, 2019, 34(12): 2656-2662. doi: 10.13224/j.cnki.jasp.2019.12.015
Citation: WANG Zhikai, CHEN Sheng, LIU Ran. Experiment on effects of airflow ratio on spray characteristics of dual-axial swirl cup[J]. Journal of Aerospace Power, 2019, 34(12): 2656-2662. doi: 10.13224/j.cnki.jasp.2019.12.015
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Experiment on effects of airflow ratio on spray characteristics of dual-axial swirl cup

doi: 10.13224/j.cnki.jasp.2019.12.015

  • Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou Hunan 412002,China

  • Received Date: 2019-06-09
  • Publish Date: 2019-12-28
    Abstract
  • In order to explore a way to improve the spray performance under low injection pressure differential, from the perspective of regulating airflow split, effects of airflow ratio of primary swirler to secondary swirler on the spray characteristics of dual-axial swirl cup were studied by experimental system. The influences of airflow ratio on mean drop diameter, drop size distribution parameter and spray angle were obtained. The experimental results indicated that increasing the airflow ratio, the mean drop diameter decreased, and the swirl cup had good spray property over a wide range of injection pressure differential, which could achieve the improvement of the spray performance under low injection pressure differential. The spray angle increased with the airflow ratio, and firstly increased but then remained constant with the injection pressure differential. For a given total airflow of swirl cup, the optimal comprehensive spray performance was obtained when the airflow ratio was about 1.

     

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