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亚临界雷诺数圆柱绕流远场气动噪声实验研究

李玲 刘沛清 邢宇 郭昊 田云

李玲, 刘沛清, 邢宇, 等 . 亚临界雷诺数圆柱绕流远场气动噪声实验研究[J]. 北京航空航天大学学报, 2016, 42(5): 977-983. doi: 10.13700/j.bh.1001-5965.2015.0364
引用本文: 李玲, 刘沛清, 邢宇, 等 . 亚临界雷诺数圆柱绕流远场气动噪声实验研究[J]. 北京航空航天大学学报, 2016, 42(5): 977-983. doi: 10.13700/j.bh.1001-5965.2015.0364
LI Ling, LIU Peiqing, XING Yu, et al. Far-field aeroacoustic experimental study of flow around a circular cylinder at subcritical Reynolds number[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(5): 977-983. doi: 10.13700/j.bh.1001-5965.2015.0364(in Chinese)
Citation: LI Ling, LIU Peiqing, XING Yu, et al. Far-field aeroacoustic experimental study of flow around a circular cylinder at subcritical Reynolds number[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(5): 977-983. doi: 10.13700/j.bh.1001-5965.2015.0364(in Chinese)

亚临界雷诺数圆柱绕流远场气动噪声实验研究

doi: 10.13700/j.bh.1001-5965.2015.0364
基金项目: 国家自然科学基金(11272034)
详细信息
    作者简介:

    李玲 女,博士研究生。主要研究方向:空气动力学、飞行器气动布局、气动噪声等。Tel.:010-82339564 E-mail:lilingase@buaa.edu.cn;刘沛清 男,博士,教授,博士生导师。主要研究方向:流动分离与控制、大迎角空气动力学、飞行器气动布局、气动噪声等。Tel.:010-82339568 E-mail:lpq@buaa.edu.cn

    通讯作者:

    刘沛清,Tel.:010-82339568 E-mail:lpq@buaa.edu.cn

  • 中图分类号: V221.3

Far-field aeroacoustic experimental study of flow around a circular cylinder at subcritical Reynolds number

  • 摘要: 针对亚临界雷诺数下圆柱绕流的气动噪声问题,在北京航空航天大学D5气动声学风洞中进行了圆柱绕流远场气动噪声的实验研究。在D5气动声学风洞实验段不同来流条件下,测量消声室中距离圆柱不同位置的自由场传声器的远场声压信号,经过快速傅里叶变换(FFT)获得亚临界雷诺数下圆柱绕流气动噪声随来流速度、接收点距离的变化规律。实验结果表明:圆柱绕流的远场气动噪声在垂直气流方向最大,随着偏离垂直方向角度的增大噪声逐渐减小,属于典型的偶极子噪声源辐射特性;远场气动噪声近似与来流速度的6次方成正比,与接收点到圆柱中心距离的2次方成反比,这说明偶极子类型的噪声源是圆柱绕流的主要噪声源。

     

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出版历程
  • 收稿日期:  2015-06-03
  • 刊出日期:  2016-05-20

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