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旋转光滑直通道湍流流动一维热线实验

江智耀 李海旺 由儒全

江智耀, 李海旺, 由儒全. 旋转光滑直通道湍流流动一维热线实验[J]. 航空动力学报, 2019, 34(3): 556-566. doi: 10.13224/j.cnki.jasp.2019.03.006
引用本文: 江智耀, 李海旺, 由儒全. 旋转光滑直通道湍流流动一维热线实验[J]. 航空动力学报, 2019, 34(3): 556-566. doi: 10.13224/j.cnki.jasp.2019.03.006
Experiment on turbulent flow in rotating smooth channel with 1D hot wire[J]. Journal of Aerospace Power, 2019, 34(3): 556-566. doi: 10.13224/j.cnki.jasp.2019.03.006
Citation: Experiment on turbulent flow in rotating smooth channel with 1D hot wire[J]. Journal of Aerospace Power, 2019, 34(3): 556-566. doi: 10.13224/j.cnki.jasp.2019.03.006

旋转光滑直通道湍流流动一维热线实验

doi: 10.13224/j.cnki.jasp.2019.03.006
基金项目: 国家自然科学基金(51506002);航空发动机气动热力国家级重点实验室基金(6142702ZX05011811)

Experiment on turbulent flow in rotating smooth channel with 1D hot wire

  • 摘要: 采用一维热线详细测量了不同雷诺数下及较高旋转数条件下旋转光滑直通道内湍流边界层及主流的速度型,在此基础上构建适用旋转数范围更广的旋转通道对数律的修正公式,分析了旋转效应对壁面摩擦速度的影响。实验过程中雷诺数范围是15000~25000,旋转数范围是0~0.444。通道壁面为室温,流体与壁面之间无热交换。结果表明:旋转对于通道截面速度型影响很大;旋转导致速度型整体向后缘面偏转,但最高速度出现在靠近前缘面的区域;后缘面无量纲平均速度型分布顺序与旋转数排列次序相一致,在对数律区符合对数律规律。壁面剪切应力在前缘面随着旋转数的增大而先单调递减,而在后缘面的变化趋势与此相反。旋转状态下修正的对数律公式斜率随着旋转数的增加而单调递减且在后缘面递减的趋势逐步有所减缓,并提出了对数律区的旋转修正公式,公式的误差范围控制在15%以内。

     

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出版历程
  • 收稿日期:  2018-08-03
  • 刊出日期:  2019-03-28

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