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射流孔交错偏置排布下的楔形凹表面对流换热数值研究

关涛 张靖周 单勇

关涛, 张靖周, 单勇. 射流孔交错偏置排布下的楔形凹表面对流换热数值研究[J]. 航空动力学报, 2016, 31(8): 1889-1896. doi: 10.13224/j.cnki.jasp.2016.08.013
引用本文: 关涛, 张靖周, 单勇. 射流孔交错偏置排布下的楔形凹表面对流换热数值研究[J]. 航空动力学报, 2016, 31(8): 1889-1896. doi: 10.13224/j.cnki.jasp.2016.08.013
GUAN Tao, ZHANG Jing-zhou, SHAN Yong. Numerical investigation of convective heat transfer on a wedge-shaped concave surface subjected to staggered offset impinging jets[J]. Journal of Aerospace Power, 2016, 31(8): 1889-1896. doi: 10.13224/j.cnki.jasp.2016.08.013
Citation: GUAN Tao, ZHANG Jing-zhou, SHAN Yong. Numerical investigation of convective heat transfer on a wedge-shaped concave surface subjected to staggered offset impinging jets[J]. Journal of Aerospace Power, 2016, 31(8): 1889-1896. doi: 10.13224/j.cnki.jasp.2016.08.013

射流孔交错偏置排布下的楔形凹表面对流换热数值研究

doi: 10.13224/j.cnki.jasp.2016.08.013
详细信息
    作者简介:

    关涛(1985-),男,江苏徐州人,博士生,主要从事射流冲击强化传热研究.

  • 中图分类号: V244.1

Numerical investigation of convective heat transfer on a wedge-shaped concave surface subjected to staggered offset impinging jets

  • 摘要: 通过三维数值模拟的方法研究了射流孔交错偏置排布下的楔形凹表面对流换热,在射流孔偏置间距比(L/d)为0~2.5、射流孔距凹腔前缘间距比(H/d)为6~12、射流冲击雷诺数(Re)为10000~28000的研究参数下,研究结果表明射流孔交错偏置排布在凹腔中诱导复杂的涡流,对应于射流冲击驻点区的局部表面传热系数得到增强;相对于直线排布的射流孔,小射流孔交错偏距比能够使得凹腔前缘附近沿弦向的展向平均努塞尔数相对射流孔直线排布方式有所改善,随着射流孔交错偏距比增加,沿弦向的展向平均努塞尔数最大值所对应的弦向位置逐渐向凹腔前缘下游迁移.为了在保持凹腔前缘对流换热能力不受到显著削弱的前提下,改善凹腔前缘附近的射流冲击对流换热能力,射流孔交错偏距比宜选择在1倍射流孔直径左右.

     

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出版历程
  • 收稿日期:  2014-12-03
  • 刊出日期:  2016-08-28

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