A model for vortical plumes in rotating convection

J.W. Portegies, R.P.J. Kunnen, G.J.F. van Heijst, J. Molenaar

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18 Citations (Scopus)

Abstract

In turbulent rotating convection a typical flow structuring in columnar vortices is observed. In the internal structure of these vortices several symmetries are approximately satisfied. A model for these columnar vortices is derived by prescribing these symmetries. The symmetry constraints are applied to the Navier¿Stokes equations with rotation in the Boussinesq approximation. It is found that the application of the symmetries results in a set of linearized equations. An investigation of the linearized equations leads to a model for the columnar vortices and a prediction for the heat flux (Nusselt number) that is very appropriate compared to the results from direct numerical simulations of the full governing equations
Original languageEnglish
Article number066602
Number of pages10
JournalPhysics of Fluids
Volume20
Issue number6
DOIs
Publication statusPublished - 2008

Keywords

  • rayleigh-benard convection
  • prandtl number
  • nonlinear convection
  • greenland sea
  • linear-theory
  • fluid layer
  • cylinder
  • motion

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