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超声速气流中凹腔对液体射流穿透深度的影响

李晨阳 吴里银 李春 李清廉

李晨阳, 吴里银, 李春, 李清廉. 超声速气流中凹腔对液体射流穿透深度的影响[J]. 航空动力学报, 2018, 33(1): 232-238. doi: 10.13224/j.cnki.jasp.2018.01.028
引用本文: 李晨阳, 吴里银, 李春, 李清廉. 超声速气流中凹腔对液体射流穿透深度的影响[J]. 航空动力学报, 2018, 33(1): 232-238. doi: 10.13224/j.cnki.jasp.2018.01.028
Effect of cavity on liquid jet penetration in supersonic crossflow[J]. Journal of Aerospace Power, 2018, 33(1): 232-238. doi: 10.13224/j.cnki.jasp.2018.01.028
Citation: Effect of cavity on liquid jet penetration in supersonic crossflow[J]. Journal of Aerospace Power, 2018, 33(1): 232-238. doi: 10.13224/j.cnki.jasp.2018.01.028

超声速气流中凹腔对液体射流穿透深度的影响

doi: 10.13224/j.cnki.jasp.2018.01.028
基金项目: 国家自然科学基金(11472303); 新世纪优秀人才支持计划(NCET-13-0156)

Effect of cavity on liquid jet penetration in supersonic crossflow

  • 摘要: 采用高速摄影对凹腔上游液体垂直射入超声速气流中的穿透深度展开了试验研究。进行了不同喷注位置和液气动量通量比条件下,平板射流和带凹腔射流的试验,研究了凹腔对射流穿透深度的影响。试验发现,射流穿透深度在凹腔前缘降低,射流边界曲线向凹腔内弯曲;射流穿透深度在凹腔后缘增大。凹腔对射流液雾的卷吸作用使穿透深度降低,剪切层撞击凹腔后缘形成的高压波传递使得穿透深度在后缘增大。减小液气动量通量比是增大凹腔对射流卷吸作用的途径之一。喷注在凹腔上游3倍凹腔深度的距离上,凹腔对穿透深度降低最大。

     

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出版历程
  • 收稿日期:  2016-06-06
  • 刊出日期:  2018-01-28

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