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旋转通道入口湍流度控制方法及验证

吴学旺 孙纪宁 张传杰 金钊

吴学旺, 孙纪宁, 张传杰, 金钊. 旋转通道入口湍流度控制方法及验证[J]. 航空动力学报, 2015, 30(2): 384-391. doi: 10.13224/j.cnki.jasp.2015.02.017
引用本文: 吴学旺, 孙纪宁, 张传杰, 金钊. 旋转通道入口湍流度控制方法及验证[J]. 航空动力学报, 2015, 30(2): 384-391. doi: 10.13224/j.cnki.jasp.2015.02.017
WU Xue-wang, SUN Ji-ning, ZHANG Chuan-jie, JIN Zhao. Control method of inlet turbulent intensity in rotating channel and validation[J]. Journal of Aerospace Power, 2015, 30(2): 384-391. doi: 10.13224/j.cnki.jasp.2015.02.017
Citation: WU Xue-wang, SUN Ji-ning, ZHANG Chuan-jie, JIN Zhao. Control method of inlet turbulent intensity in rotating channel and validation[J]. Journal of Aerospace Power, 2015, 30(2): 384-391. doi: 10.13224/j.cnki.jasp.2015.02.017

旋转通道入口湍流度控制方法及验证

doi: 10.13224/j.cnki.jasp.2015.02.017
详细信息
    作者简介:

    吴学旺(1989-),男,湖南湘潭人,硕士,主要从事旋转换热与流动研究.

  • 中图分类号: V235.1

Control method of inlet turbulent intensity in rotating channel and validation

  • 摘要: 针对旋转通道实验,为了获得理想的旋转通道入口湍流度,更好地模拟实际涡轮叶片内冷通道的流动换热,提出了一种入口湍流度控制方法,并通过实验对该方法进行了验证和初步探索.实验中,在边长为40mm×40mm的方形通道中,放置了一层网丝直径d=3mm,网丝间距Mu=12mm的阻尼网,利用热线风速仪,得到了雷诺数为2200~3900范围内的阻尼网后下游湍流特性.研究发现:流体通过该阻尼网后,湍流度显著增大并沿流向逐渐衰减,相同点湍流度随阻尼网雷诺数增大而增大,气流在阻尼网后较短距离内就获得了5%的湍流度,这与实际涡轮叶片内冷通道流动湍流度相当;阻尼网雷诺数越小,流动越早进入横向均匀及各向同性湍流;通过经典公式对阻尼网后通道中心湍流度沿流向分布进行拟合,实验数据与曲线拟合较好.

     

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出版历程
  • 收稿日期:  2013-09-17
  • 刊出日期:  2015-02-28

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