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圆柱绕流尾迹流态特征和涡的演化过程分析

董双岭 吴颂平

董双岭, 吴颂平. 圆柱绕流尾迹流态特征和涡的演化过程分析[J]. 北京航空航天大学学报, 2009, 35(8): 933-937.
引用本文: 董双岭, 吴颂平. 圆柱绕流尾迹流态特征和涡的演化过程分析[J]. 北京航空航天大学学报, 2009, 35(8): 933-937.
Dong Shuangling, Wu Songping. Analysis of wake pattern and vortex evolution in flow past circular cylinder[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(8): 933-937. (in Chinese)
Citation: Dong Shuangling, Wu Songping. Analysis of wake pattern and vortex evolution in flow past circular cylinder[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(8): 933-937. (in Chinese)

圆柱绕流尾迹流态特征和涡的演化过程分析

详细信息
    作者简介:

    董双岭(1981-),男,河北唐山人,博士生, dilingzi@163.com.

  • 中图分类号: O 357.5

Analysis of wake pattern and vortex evolution in flow past circular cylinder

  • 摘要: 低雷诺数圆柱绕流中存在着复杂的流动过程,比如,尾迹中涡的发展显然不是理想的轴对称卷绕和扩散的过程.针对上述问题,用场观点和拉各朗日观点分别分析了固定时刻的流场特征和不同时刻的流动过程.首先通过等压线和相对流线的叠加,分析了相邻涡间通道内的流动.其次从涡结构的角度解释了尾迹中流体速度随时间的变化规律,并利用流体在不同时刻受不同流动结构控制的观点解释了染色线多次折回中粒子间的显著间断现象.最后对绕圆柱附近的流动进行了分区界定,分析了其中部分流体的变形情况和运动过程.

     

  • [1] Perry A E,Chong M S,Lim T T. The vortex shedding process behind two-dimensional bluff bodies[J]. Journal of Fluid Mechanics ,1982, 116:77-90 [2] Williamson C H K. Vortex dynamics in the cylinder wake[J]. Annual Review of Fluid Mechanics, 1996,28:477-539 [3] Pedram R, Wu X L. Universal wake structures of Kármán vortex streets in two-dimensional flows[J]. Physics of Fluids,2005,17(7):073601-1-073601-8 [4] Grove A S ,Shair F H ,Petersen E E,et al. An experiment investigation of the steady separated flow past a circular cylinder[J]. Journal of Fluid Mechanics,1964,19:60-80 [5] Braza M,Chassaing P,Haminh H.Numerical study and physical analysis of the pressure and velocity fields in the near wake of a circular cylinder[J]. Journal of Fluid Mechanics Digital Archive,1986,165: 79-130 [6] Anagnostopoulos P. Computer-aided flow visualization and vorticity balance in the laminar wake of a circular cylinder[J]. Journal of Fluids and Stuctures,1997,11(1):33-72 [7] Donald R. Vortex formation in shallow flow[J]. Physics of Fluids,2008,20(3):031303-1-031303-8 [8] David J,Morteza G.On the relationship between the vortex formation process and cylinder wake vortex patterns[J]. Journal of Fluid Mechanics,2004,519:161-181
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出版历程
  • 收稿日期:  2008-06-30
  • 网络出版日期:  2009-08-31

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