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粗糙度对涡轮叶片流动转捩及传热特性的影响

李虹杨 郑赟

李虹杨, 郑赟. 粗糙度对涡轮叶片流动转捩及传热特性的影响[J]. 北京航空航天大学学报, 2016, 42(10): 2038-2047. doi: 10.13700/j.bh.1001-5965.2015.0659
引用本文: 李虹杨, 郑赟. 粗糙度对涡轮叶片流动转捩及传热特性的影响[J]. 北京航空航天大学学报, 2016, 42(10): 2038-2047. doi: 10.13700/j.bh.1001-5965.2015.0659
LI Hongyang, ZHENG Yun. Effect of surface roughness on flow transition and heat transfer of turbine blade[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(10): 2038-2047. doi: 10.13700/j.bh.1001-5965.2015.0659(in Chinese)
Citation: LI Hongyang, ZHENG Yun. Effect of surface roughness on flow transition and heat transfer of turbine blade[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(10): 2038-2047. doi: 10.13700/j.bh.1001-5965.2015.0659(in Chinese)

粗糙度对涡轮叶片流动转捩及传热特性的影响

doi: 10.13700/j.bh.1001-5965.2015.0659
详细信息
    作者简介:

    李虹杨,男,博士研究生。主要研究方向:非定常流动及换热的数值模拟,流、热耦合数值模拟。E-mail:buaalihy@hotmail.com;郑赟男,博士,讲师。主要研究方向:计算流体力学,叶轮机械流、热、固耦合仿真。Tel.:010-82338753,E-mail:zheng_yun@buaa.edu.cn

    通讯作者:

    郑赟,Tel.:010-82338753,E-mail:zheng_yun@buaa.edu.cn

  • 中图分类号: V211.3

Effect of surface roughness on flow transition and heat transfer of turbine blade

  • 摘要: 为研究表面粗糙度对涡轮叶片流动转捩以及传热特性的影响,在自行开发的CFD程序平台上提出了对γ-Reθ转捩模型的粗糙度修正方法,并参考平板绕流和涡轮叶栅的实验数据对该方法进行验证。考虑粗糙度效应的影响,对Mark Ⅱ涡轮导叶5411工况进行数值模拟,得到如下结论:表面粗糙度对层流边界层换热系数影响不大,而对湍流边界层则有较大影响,进而显著改变壁面温度分布;与光滑壁面相比,5μm的等效沙粒粗糙度使吸力面湍流区域壁面温度升高约5.7K,100μm粗糙度使壁面温度升高28.4 K,增幅达5%左右;当壁面粗糙度较低时,激波干涉对吸力面边界层的转捩起主导作用,而当粗糙度大于某临界值时,其作用会使转捩位置突然变化,本算例中该临界值近似为150μm。

     

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出版历程
  • 收稿日期:  2015-10-13
  • 刊出日期:  2016-10-20

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