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: http://num-meth.srcc.msu.ru/english/zhurnal/tom_2004/v5r104.html
Дата изменения: Fri Oct 19 15:09:56 2007 Дата индексирования: Mon Oct 1 22:37:51 2012 Кодировка: |
"The subgrid problem of thermal convection in the Earth's liquid core" Reshetnyak M. and Steffen B. |
The problem of turbulent thermal convection in the Earth's liquid core is considered. Following assumptions on decreasing of the spatial scales due to rapid rotation, we propose a subgrid model of eddy diffusivity used in the large-scale model. This approach makes it possible to model realistic regimes with small Ekman and Rossby numbers and with a sufficiently large Rayleigh number. An estimate obtained for the averaged kinetic energy is comparable with observations. The model includes rotation of the solid core due to viscous torque. |
M. Reshetnyak - United Institute of Physics of the Earth, Russian Acad. Sci, 123995, Moscow,
Russian Federation;
e-mail: maxim@uipe-ras.scgis.ru ;
Research Computing Center of Moscow State University, 119992, Moscow, Russian Federation;
e-mail: reshet@srcc.msu.ru Steffen B. - Central Institute for Applied Mathematics (ZAM) of Fofshungszentrum Jülich, D-52425, Jülich, Germany; e-mail: b.steffen@fz-juelich.de |