Acta Mechanica Sinica

, Volume 5, Issue 1, pp 31–36 | Cite as

Some new results of the observation on the coherent structures of turbulent boundary layer in flow with adverse pressure gradient

  • Lian Qixiang


By a suitable manipulation of hydrogen bubble generation, some new results were obtained: (1) The long-streaks are generated along the interfaces between low and high-speed streaks. The long-streaks are generally stretching and are moving faster than its neighboring high-speed streaks. The hydrogen bubbles in long-streaks have longer life. (2) The stream-wise vortices are also generated along the interfaces.

Key Words

coherent structure turbulent boundary layer adverse pressure visualization long-streaks streamwise vortices 


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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 1989

Authors and Affiliations

  • Lian Qixiang
    • 1
  1. 1.Beijing University of Aero. and Astr.BeijingChina

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