High-Rayleigh-number convection in spherical shells
- 1 May 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 53 (5) , 4847-4851
- https://doi.org/10.1103/physreve.53.4847
Abstract
Convection in a self-gravitating spherical shell is simulated numerically for Prandtl numbers between 10 and 0.06. This geometry introduces asymmetries between the boundary layers whose influence on the scaling properties of the Nusselt and Reynolds numbers is investigated. The observed Prandtl number dependences are compared with predictions from mixing length theory and more recent theories which describe the "hard turbulence" regime of convection.Keywords
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