Anisotropy in turbulent rotating convection

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Abstract

A simple model for many geophysical and astrophysical flows, such as oceanic deep convection and the convective outer layer of the Sun, is found in rotating Rayleigh.BéLenard convection: a horizontal fluid layer heated from below and cooled from above is rotated about a vertical axis. Three dimensionless parameters characterise this flow: the Rayleigh number Ra describes the strength of the destabilising temperature gradient, the Prandtl number relates the diffusion coefficients for heat and momentum of the fluid, and the Rossby number Ro is the ratio of buoyancy and Coriolis forces (when rotation is absent and Ro 1 for rotation-dominated flow). We investigate the effect of rotation on the flow anisotropy in turbulent convection in an upright cylinder of equal height and diameter, with experiments and numerical simulations.
Original languageEnglish
Title of host publicationAdvances in Turbulence XII: Proceedings of the 12th EUROMECH European Turbulence Conference, 7-10 September, 2009, Marburg, Germany
EditorsB. Eckhardt
Place of PublicationBerlin
PublisherSpringer
Pages418-418
ISBN (Print)978-3-642-03084-0
DOIs
Publication statusPublished - 2009
Eventconference; 12th EUROMECH European Turbulence Conference; 2009-09-07; 2009-09-10 -
Duration: 7 Sep 200910 Sep 2009

Publication series

NameSpringer Proceedings in Physics
Volume132
ISSN (Print)0930-8989

Conference

Conferenceconference; 12th EUROMECH European Turbulence Conference; 2009-09-07; 2009-09-10
Period7/09/0910/09/09
Other12th EUROMECH European Turbulence Conference

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