A numerical dynamo benchmark

U. R. Christensen , J. Aubert (1) , P. Cardin (2) , E. Dormy (3) , S. Gibbons , G. A. Glatzmaier , E. Grote , Y. Honkura , C. Jones , M. Kono , M. Matsushima , A. Sakuraba , F. Takahashi , A. Tilgner , J. Wicht , K. Zhang

1 OSUG - Observatoire des Sciences de l'Univers de Grenoble
2 LGIT - Laboratoire de Géophysique Interne et Tectonophysique
3 IPGP - Institut de Physique du Globe de Paris

We present the results of a benchmark study for a convection-driven magnetohydrodynamic dynamo problem in a rotating spherical shell. The solutions are stationary aside from azimuthal drift. One case of non-magnetic convection and two dynamos that differ in the assumptions concerning the inner core are studied. Six groups contributed numerical solutions which show good agreement. This provides an accurate reference standard with high confidence.

Domaines: Planète et Univers [physics]

U. R. Christensen, J. Aubert, P. Cardin, E. Dormy, S. Gibbons, et al.. A numerical dynamo benchmark. Physics of the Earth and Planetary Interiors, 2001, 128, pp.25-34. ⟨10.1016/S0031-9201(01)00275-8⟩. ⟨insu-03606657⟩