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圆盘阻力非定常特性测量

胡 烨 王晋军

胡 烨, 王晋军. 圆盘阻力非定常特性测量[J]. 北京航空航天大学学报, 2009, 35(7): 783-785.
引用本文: 胡 烨, 王晋军. 圆盘阻力非定常特性测量[J]. 北京航空航天大学学报, 2009, 35(7): 783-785.
Hu Ye, Wang Jinjun. Unsteady drag measurements for flow over a circular disk[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 783-785. (in Chinese)
Citation: Hu Ye, Wang Jinjun. Unsteady drag measurements for flow over a circular disk[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 783-785. (in Chinese)

圆盘阻力非定常特性测量

基金项目: 国家杰出青年基金资助项目(10425207)
详细信息
    作者简介:

    胡 烨(1984- ), 女, 江西九江人, 博士生, 32050314@ase.buaa.edu.cn.

  • 中图分类号: O 351.2

Unsteady drag measurements for flow over a circular disk

  • 摘要: 对垂直于来流方向的圆盘进行非定常测力实验,研究上游二维干扰圆杆和圆盘绕流雷诺数(雷诺数范围为0.44×105~2.74×105)对圆盘阻力及其脉动特性的影响.实验结果表明,无论有无上游干扰,圆盘平均阻力系数均不随雷诺数改变.上游干扰圆杆在降低圆盘阻力系数的同时,使圆盘阻力脉动量增大,而且当圆盘绕流雷诺数大于1.84×105时阻力脉动量的增幅将随雷诺数的加大而迅速增加.对圆盘阻力的频谱分析表明,在圆盘上游无干扰时,圆盘绕流形成的螺旋状涡引起的非轴对称波动频率(斯特劳哈尔数为0.135)为阻力脉动的主频.

     

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出版历程
  • 收稿日期:  2008-06-05
  • 网络出版日期:  2009-07-31

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