DNS of convective heat transfer in a rotating cylinder

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Samenvatting

The effects of rotation on the convective heat transfer and flow structuring in a cylindrical volume of fluid is investigated with direct numerical simulation (DNS). A formulation of the discrete equations of motion in cylindrical coordinates is solved with finite-difference approximations. At constant Rayleigh (Ra; dimensionless temperature gradient) and Prandtl (s; characterises diffusive properties of the fluid) numbers, the Rossby number Ro, the ratio of buoyancy and Coriolis forces, is varied between runs with 0. 045 = Ro = 8. For Ro ¿ 1. 2 we find the so-called large-scale circulation. At Ro ¿ 1. 2 slender columnar vortical plumes are found. In a range of Ro heat transfer is increased by Ekman pumping in the vortical plumes.
Originele taal-2Engels
TitelProceedings of the Seventh International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, University of Trieste, Italy September 8-10, 2008
RedacteurenV. Armenio, J. Fröhlich, B.J. Geurts
Plaats van productieBerlin
UitgeverijSpringer
Pagina's393-398
ISBN van geprinte versie978-90-481-3651-3
DOI's
StatusGepubliceerd - 2010
Evenement7th ERCOFTAC Workshop on Direct and Large-Eddy Simulations (DLES7), September 8-10, 2008, Trieste, Italy - Trieste, Italië
Duur: 8 sep. 200810 sep. 2008

Publicatie series

NaamErcoftac Series
Volume13
ISSN van geprinte versie1382-4309

Workshop

Workshop7th ERCOFTAC Workshop on Direct and Large-Eddy Simulations (DLES7), September 8-10, 2008, Trieste, Italy
Verkorte titelDLES7
Land/RegioItalië
StadTrieste
Periode8/09/0810/09/08
AnderErcoftac Workshop Direct and Large-Eddy Simulations 7 (DLES7) ICTP, Trieste, Italy, 2008

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