A dynamo model in a spherical shell

Authors

  • M. Reshetnyak Schmidt Institute of Physics of the Earth of RAS (IPE RAS) https://orcid.org/0000-0003-2071-1232
  • B. Steffen Central Institute for Applied Mathematics (ZAM) of Fofshungszentrum Jülich

Keywords:

метод контрольных объемов, магнитное поле, внутреннее ядро, инверсии, геодинамо, стратификация, планеты-гиганты

Abstract

For the convection-driven dynamo in the Boussinesq approximation in a rotating spherical shell, we study various regimes of thermal convection which may occur in the planetary cores. Our dynamo model is based on the control volume method, which is well suited for parallel computers using message passing. We consider different boundary conditions at the surface of the shell and mimic a regime with stratification, which is typical for compositional convection. The influence of the inner solid conductive core on reversals is considered. Applications of our modeling to the two different planetary geometries mdash; the Earth and Giant planets mdash; are discussed.

Author Biographies

M. Reshetnyak

Schmidt Institute of Physics of the Earth of RAS (IPE RAS)

B. Steffen

Central Institute for Applied Mathematics (ZAM) of Fofshungszentrum Jülich
Forschungszentrum Jülich GmbH, 52425 Jülich, Germany

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Published

18-01-2005

How to Cite

Решетняк М., Штеффен Б. A Dynamo Model in a Spherical Shell // Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie). 2005. 6. 27-34

Issue

Vol. 6 (2005): Issue 1.

Section

Section 1. Numerical methods and applications