Print Email Facebook Twitter A Comparison of Continuous Mass-lumped Finite Elements and Finite Differences for 3D Title A Comparison of Continuous Mass-lumped Finite Elements and Finite Differences for 3D Author Zhebel, E. Minisini, S. Kononov, A. Mulder, W.A. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2012-06-04 Abstract The finite-difference method is widely used for time-domain modelling of the wave equation because of its ease of implementation of high-order spatial discretization schemes, parallelization and computational efficiency. However, finite elements on tetrahedral meshes are more accurate in complex geometries near sharp interfaces. We compared the fourth-order finite-difference method to fourth-order continuous masslumped finite elements in terms of accuracy and computational cost. The results show that for simple models like a cube with constant density and velocity, the finite-difference method outperforms the finite-element method by at least an order of magnitude. For a model with interior complexity and topography, however, the finite elements are about two orders of magnitude faster than finite differences. To reference this document use: http://resolver.tudelft.nl/uuid:c45304e8-b3df-4a0e-a95a-d998235a51a1 Publisher EAGE ISBN 978-90-73834-27-9 Source 74th EAGE Conference & Exhibition incorporating SPE EUROPEC 2012, Copenhagen, Denmark, 4-7 June 2012 Part of collection Institutional Repository Document type conference paper Rights (c) 2012 The Author(s) Files PDF 294730.pdf 570.36 KB Close viewer /islandora/object/uuid:c45304e8-b3df-4a0e-a95a-d998235a51a1/datastream/OBJ/view