Lower branch coherent states in shear flows: transition and control.

Academic Article


  • Lower branch coherent states in plane Couette flow have an asymptotic structure that consists of O(1) streaks, O(R(-1)) streamwise rolls and a weak sinusoidal wave that develops a critical layer, for large Reynolds number R. Higher harmonics become negligible. These unstable lower branch states appear to have a single unstable eigenvalue at all Reynolds numbers. These results suggest that lower branch coherent states control transition to turbulence and that they may be promising targets for new turbulence prevention strategies.
  • Authors

  • Wang, Jue
  • Gibson, John
  • Waleffe, Fabian
  • Status

    Publication Date

  • May 18, 2007
  • Has Subject Area

    Published In


  • Prevention
  • Digital Object Identifier (doi)

    Pubmed Id

  • 17677701
  • Start Page

  • 204501
  • Volume

  • 98
  • Issue

  • 20