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蒸发管蒸发效率的试验与管内两相流动的数值模拟

李超 雷雨冰 潘鑫峰

李超, 雷雨冰, 潘鑫峰. 蒸发管蒸发效率的试验与管内两相流动的数值模拟[J]. 航空动力学报, 2018, 33(12). doi: 10.13224/j.cnki.jasp.2018.12.008
引用本文: 李超, 雷雨冰, 潘鑫峰. 蒸发管蒸发效率的试验与管内两相流动的数值模拟[J]. 航空动力学报, 2018, 33(12). doi: 10.13224/j.cnki.jasp.2018.12.008
Experiment on evaporation efficiency of vaporizer andnumerical simulation of two-phase flow in vaporizer[J]. Journal of Aerospace Power, 2018, 33(12). doi: 10.13224/j.cnki.jasp.2018.12.008
Citation: Experiment on evaporation efficiency of vaporizer andnumerical simulation of two-phase flow in vaporizer[J]. Journal of Aerospace Power, 2018, 33(12). doi: 10.13224/j.cnki.jasp.2018.12.008

蒸发管蒸发效率的试验与管内两相流动的数值模拟

doi: 10.13224/j.cnki.jasp.2018.12.008

Experiment on evaporation efficiency of vaporizer andnumerical simulation of two-phase flow in vaporizer

  • 摘要: 为研究微型燃烧室蒸发管的雾化蒸发性能,试验研究了进气温度、气油比(AFR)、管壁温度和进口空气流速对燃油蒸发率的影响。试验结果表明:进气温度和进口空气流速是影响蒸发效率的两个主要因素;当气油比减小到3.0时,管内两相流型由膜态沸腾向过渡态沸腾转变,该状态下燃油与管壁的换热效率最低。蒸发管数值仿真引入离散相模型(DPM)和液滴碰壁飞溅模型,蒸发效率计算结果与试验数据呈现相同趋势。在此基础上研究了气动参数对燃油雾化的影响。计算结果表明,进口空气流速的提高可以改善燃油雾化细度,但不利于液滴分布的均匀性,索太尔平均直径(SMD)与进口空气流速的-1.69次方成正比。

     

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出版历程
  • 收稿日期:  2017-09-08
  • 刊出日期:  2018-12-28

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