Journal Article

Large-scale adaptive mantle convection simulation

Carsten Burstedde, Georg Stadler, Laura Alisic, Lucas C. Wilcox, Eh Tan, Michael Gurnis and Omar Ghattas

in Geophysical Journal International

Volume 192, issue 3, pages 889-906
Published in print March 2013 | ISSN: 0956-540X
Published online January 2013 | e-ISSN: 1365-246X | DOI: http://dx.doi.org/10.1093/gji/ggs070
Large-scale adaptive mantle convection simulation

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A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency and parallel scalability of both mesh handling and numerical solvers. Rhea builds mantle convection solvers on a collection of parallel octree-based adaptive finite element libraries that support new distributed data structures and parallel algorithms for dynamic coarsening, refinement, rebalancing and repartitioning of the mesh. In this study we demonstrate scalability to 122 880 compute cores and verify correctness of the implementation. We present the numerical approximation and convergence properties using 3-D benchmark problems and other tests for variable-viscosity Stokes flow and thermal convection.

Keywords: Numerical solutions; Mantle processes; Dynamics: convection currents, and mantle plumes

Journal Article.  13159 words.  Illustrated.

Subjects: Geophysics

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