Volume 31 Issue 9
Sep.  2016
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ZHENG Gang, FENG Wei, NIE Wan-sheng, ZHOU Li-xin. Effect of momentum ratio on atomization characteristics of unlike-doublet impinging jets injector[J]. Journal of Aerospace Power, 2016, 31(9): 2283-2289. doi: 10.13224/j.cnki.jasp.2016.09.030
Citation: ZHENG Gang, FENG Wei, NIE Wan-sheng, ZHOU Li-xin. Effect of momentum ratio on atomization characteristics of unlike-doublet impinging jets injector[J]. Journal of Aerospace Power, 2016, 31(9): 2283-2289. doi: 10.13224/j.cnki.jasp.2016.09.030

Effect of momentum ratio on atomization characteristics of unlike-doublet impinging jets injector

doi: 10.13224/j.cnki.jasp.2016.09.030
  • Received Date: 2015-04-26
  • Publish Date: 2016-09-28
  • Numerical simulation was carried out on the atomization process of unlike-doublet impinging jets injector based on the CLSVOF (coupled level-set and volume of fluid) method. The simulation results were compared with the experiment results, and the effect of momentum ratios on liquid sheet characteristics was investigated in detail. The results show that:(1) The CLSVOF method can efficiently capture the liquid sheet characteristics formed by jet impact. The calculated liquid sheet agrees well with the experiment result. (2) In the impinging process of jets, part of the jet flow of large diameter nozzle is not involved in the impact, while the velocity of liquid in the central position drops rapidly after impact, and at the same time, the surrounding liquid maintains the velocity before impact, which results in the formation of cured liquid sheet. (3) Under the conditions of different momentum ratios, the resultant angle in the axis position after impact mainly depends on the momentum ratio of impinging jets. The simulation results are in good agreement with the theoretical calculation results, with the errors less than 10%.

     

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