Journal article

Ellipsis 3D: A particle-in-cell finite-element hybrid code for modelling mantle convection and lithospheric deformation

Craig O'Neill, Louis Moresi, Dietmar Muller, Rich Albert, Frederic Dufour

COMPUTERS & GEOSCIENCES | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2006

Abstract

We have extended the two-dimensional geodynamics finite-element code "Ellipsis" to three-dimensions. Ellipsis uses a hybrid particle in a cell scheme, which combines a fixed mesh of computational points and a dense arrangement of mobile material points. The fixed Eulerian mesh allows very fast computation, performed in Ellipsis via a multigrid iteration method, while the Lagrangian particle reference frame allows the tracking of material interfaces and history-dependent properties such as strain history for strain-softening materials. The method is exceptionally useful in very large deformation analyses, where purely Lagrangian approaches would be severely hampered by the need for remeshing ..

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University of Melbourne Researchers