Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 369851
Title A model for vortical plumes in rotating convection
Author(s) Portegies, J.W.; Kunnen, R.P.J.; Heijst, G.J.F. van; Molenaar, J.
Source Physics of Fluids 20 (2008)6. - ISSN 1070-6631 - 10 p.
Department(s) Biometris (WU MAT)
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) rayleigh-benard convection - prandtl number - nonlinear convection - greenland sea - linear-theory - fluid layer - cylinder - motion
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
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