Modelling the core convection using finite element and finite difference methods

Details Modelling the core convection using finite element and finite difference methods Modelling the core convection using finite element and finite difference methods

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pepi..157..124c&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 157, Issue 1-2, p. 124-138.

Physics

5

Scientific paper

Applications of both parallel finite element and finite difference methods to thermal convection in a rotating spherical shell modelling the fluid dynamics of the Earth’s outer core are presented. The numerical schemes are verified by reproducing the convection benchmark test by Christensen et al. [Christensen, U.R., Aubert, J., Cardin, P., Dormy, E., Gibbons, S., Glatzmaier, G.A., Grote, E., Honkura, Y., Jones, C., Kono, M., Matsushima, M., Sakuraba, A., Takahashi, F., Tilgner, A., Wilcht, J., Zhang, K., 2001. A numerical dynamo benchmark. Phys. Earth Planet. Interiors 128, 25 34.]. Both global average and local characteristics agree satisfactorily with the benchmark solution. With the element-by-element (EBE) parallelization technique, the finite element code demonstrates nearly optimal linear scalability in computational speed. The finite difference code is also efficient and scalable by utilizing a parallel library Aztec [Tuminaro, R.S., Heroux, M., Hutchinson, S.A., Shadid, J.N., 1999. Official AZTEC User’s Guide: Version 2.1.].

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