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力学进展 ›› 2011, Vol. 41 ›› Issue (6): 668-685.doi: 10.6052/1000-0992-2011-6-lxjzJ2011-070

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自由来流扰动引起的旁路转捩研究进展

潘翀,王晋军   

  1. 北京航空航天大学
  • 收稿日期:2011-05-11 修回日期:2011-09-22 出版日期:2011-11-25 发布日期:2011-12-23
  • 通讯作者: 潘翀 E-mail:airpcpan@gmail.com
  • 基金资助:

    国家自然科学基金重点项目

PROGRESS IN BYPASS TRANSITION INDUCED BY FREE-STREAM DISTURBANCE

Chong Pan,Jinjun Wang   

  • Received:2011-05-11 Revised:2011-09-22 Online:2011-11-25 Published:2011-12-23
  • Contact: Chong Pan E-mail:airpcpan@gmail.com

摘要: 本文回顾了自由来流扰动引起的边界层旁路转捩研究进展, 所讨论的自由来流扰动包含高湍流度自由来流和尾迹两大类. 首先介绍旁路转捩的定义、途经及其与规则转捩的区别; 继而讨论高湍流度自由来流引起旁路转捩的路径和机理, 涵盖感受性、瞬态增长、湍流斑、条带稳定性等旁路转捩的主要环节. 在此基础上介绍了尾迹引起旁路转捩的研究现状, 包括对流尾迹和大尺度钝体尾涡两种尾迹形式, 分析了转捩路径及机理, 最后给出研究展望.

关键词:

尾迹扰动

Abstract: Progress in bypass transition induced by free-stream disturbance is reviewed in this paper. Free-stream disturbance, as the forcing environment, can be divided into two categories, free-stream turbulence and wake. The definition, classification and general route of bypass transition is presented first, followed by reviewing the characteristics and physics of FST-induced bypass transition. In this scenario, the topics of receptivity process, transient growth theory, Klebanoff mode, streak instability, turbulent spot and breakdown have all been covered. Moreover, we go further to review the previous studies on bypass transition induced by wake, both the passage wake and the wake containing large scale coherent vortices are included. Finally, the perspective for future investigations is forcasted.

Key words:

wake disturbance

中图分类号: 

  • O357.4