中国物理B ›› 2000, Vol. 9 ›› Issue (7): 508-514.doi: 10.1088/1009-1963/9/7/007

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ON THE BREAKDOWN OF A LONG STREAK IN A TRANSITIONAL BOUNDARY LAYER

符松1, 李存标2   

  1. (1)Laboratory of Fluid Mechanics, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China; (2)Laboratory of Fluid Mechanics, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China; State key Laboratory of Turbulence Research, Peking University, Beijing 100871, China
  • 收稿日期:1999-04-24 修回日期:2000-01-11 出版日期:2000-07-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China(Grant Nos. 199720343 and in part by the Isaac Newton Institute for Mathematical Sciences, University of Cambridge, UK.

ON THE BREAKDOWN OF A LONG STREAK IN A TRANSITIONAL BOUNDARY LAYER

Lee Cun-biao (李存标)ab, Fu Song (符松)b   

  1. a Laboratory of Fluid Mechanics, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China; b State key Laboratory of Turbulence Research, Peking University, Beijing 100871, China
  • Received:1999-04-24 Revised:2000-01-11 Online:2000-07-15 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China(Grant Nos. 199720343 and in part by the Isaac Newton Institute for Mathematical Sciences, University of Cambridge, UK.

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摘要： Transition in regular K-regime of boundary layer is studied. The features of the long streak that is considered as a form of soliton/like coherent structure (CS-soliton) are investigated briefly. The experiment shows that the breakdown of long streak is generated by chain of ring-like vortices.

Abstract: Transition in regular K-regime of boundary layer is studied. The features of the long streak that is considered as a form of soliton/like coherent structure (CS-soliton) are investigated briefly. The experiment shows that the breakdown of long streak is generated by chain of ring-like vortices.

Key words: boundary layer transition, chain of ring-like vortices, secondary closed vortex, long streak breakdown

中图分类号:  (Inviscid flows with vorticity)

  • 47.15.ki
47.27.nb (Boundary layer turbulence ?) 47.35.Fg (Solitary waves)