Volume 59, Number 2, July 2002
|Page(s)||212 - 217|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 July 2002|
Combined grid-shell approach for convection in a rotating spherical layer
Institute of Continuous Media Mechanics -
Korolyov 1, 614061 Perm, Russia
2 Institute of Physics of the Earth - 123995 Moscow, Russia
3 Department of Physics, Moscow State University - 119899 Moscow, Russia
Accepted: 1 May 2002
A model of Boussinesq convection in a fast rotating spherical layer with the free-rotating inner core is considered. To solve the problem, two sets of equations are used. First, we solve the original Navier-Stokes equation and thermal-flux equation on the coarse grid. The small-scale flow features are described in terms of the shell model technique. The influence of small scales on large-scales is taken into account by means of effective viscosity, which is calculated from the spectral energy flux defined in the shell model. The properties of the turbulent spectrum is considered.
PACS: 47.27.Eq – Turbulence simulation and modeling
© EDP Sciences, 2002
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