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旋转U型通道流动与换热特性的数值研究

杨珂 闻洁 徐国强

杨珂, 闻洁, 徐国强. 旋转U型通道流动与换热特性的数值研究[J]. 航空动力学报, 2016, 31(11): 2567-2574. doi: 10.13224/j.cnki.jasp.2016.11.002
引用本文: 杨珂, 闻洁, 徐国强. 旋转U型通道流动与换热特性的数值研究[J]. 航空动力学报, 2016, 31(11): 2567-2574. doi: 10.13224/j.cnki.jasp.2016.11.002
YANG Ke, WEN Jie, XU Guo-qiang. Numerical investigation of flow and heat transfer characteristics in rotating square U-duct[J]. Journal of Aerospace Power, 2016, 31(11): 2567-2574. doi: 10.13224/j.cnki.jasp.2016.11.002
Citation: YANG Ke, WEN Jie, XU Guo-qiang. Numerical investigation of flow and heat transfer characteristics in rotating square U-duct[J]. Journal of Aerospace Power, 2016, 31(11): 2567-2574. doi: 10.13224/j.cnki.jasp.2016.11.002

旋转U型通道流动与换热特性的数值研究

doi: 10.13224/j.cnki.jasp.2016.11.002
详细信息
    作者简介:

    杨珂(1990-),女,辽宁沈阳人,助理工程师,硕士,主要从事涡轮叶片换热与冷却研究.E-mail:yangke0701@126.com

  • 中图分类号: V231.1

Numerical investigation of flow and heat transfer characteristics in rotating square U-duct

  • 摘要: 应用k-ω SST(shear stress transport)湍流模型,计算分析旋转U型通道在不同进口雷诺数(10000~60000)和高旋转数(0~2.013)范围内的流动与换热特性.结果表明:在静止和旋转状态下,进口雷诺数越大,努塞尔数越大.相比于同一工况下的静止状态,旋转显著增强了径向外流直通道的换热强度,径向内流直通道换热强度增大不明显.旋转数对U型通道换热的影响主要通过改变哥氏力和浮升力的大小.受哥氏力的影响,径向外流直通道后缘面换热增强,前缘面换热减弱.浮升力诱发了近壁面的流动分离,使得径向外流直通道前缘面不同位置处的换热强度随旋转数的增加而先减小后增大,计算得到的临界旋转数变化规律与实验测量结果保持一致,即无量纲距离参数与临界旋转数的乘积为定值.

     

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出版历程
  • 收稿日期:  2015-03-11
  • 刊出日期:  2016-11-28

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