Volume 35 Issue 8
Aug.  2009
Turn off MathJax
Article Contents
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)

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

  • Received Date: 30 Jun 2008
  • Publish Date: 31 Aug 2009
  • In low-Reynolds-number flow passing circular cylinder, fluid experiences a relatively complex process,for instance,the vortex in the near wake does not roll up and diffuse axisymmetrically.Field and Lagrange viewpoint were used to analyze flow field characteristic at fixed time and flow process during a time interval separately.Through the superposition of pressure contours and relative streamline, alleyway flow between votices was analyzed. The time-dependent fluid velocities were interpreted from the viewpoint of vortex structure.The standpoint that part of fluid was governed by distinct flow structures at different time gave insight to the phenomenon of substantial gaps between successive points in multiple folding steaklines.Several subzones were divided around the circular cylinder, the moving process and deformation of partial fluid were analyzed.

     

  • loading
  • [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
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(2920) PDF downloads(1854) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return