Growth and Decay of Longitudinal Roll Cells in Rotating Turbulent Plane Couette Flow

  • K. H. Bech
  • H. I. Andersson
Part of the Fluid Mechanics and its Applications book series (FMIA, volume 36)


The plane Couette flow, i.e. the shear-driven fluid motion between two parallel planes in relative motion, is one of the fundamental prototype flows in classical fluid mechanics. The presence of the roll-cell instability in laminar plane Couette flow subject to system rotation has been explored by Lezius & Johnston (1976) and Speziale & Wilson (1989), while the existence of persistent pairs of counterrotating longitudinal vortices or roll cells in a weakly rotating turbulent Couette flow was first observed by Bech & Andersson (1995). In the latter numerical study, roll cells were found to be present for weak anticyclonic rotation, i.e. the imposed background or system vorticity is antiparallel to the mean flow vorticity. More surprisingly, however, was that in spite of the destabilizing influence of the Coriolis force with respect to roll cell formation,the turbulence level was actually reduced.


System Rotation Fluid Mechanics Couette Flow Rotation Number Turbulence Level 
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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • K. H. Bech
    • 1
  • H. I. Andersson
    • 1
  1. 1.Division of Applied MechanicsNorwegian University of Science and TechnologyTrondheimNorway

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