Print Email Facebook Twitter New mass-lumped tetrahedral elements for 3D wave propagation modelling Title New mass-lumped tetrahedral elements for 3D wave propagation modelling Author Geevers, S. (University of Twente) Mulder, W.A. (TU Delft Applied Geophysics and Petrophysics; Shell) van der Vegt, J (University of Twente) Date 2019 Abstract We present a new accuracy condition for constructing mass-lumped elements. This condition is less restrictive than the one previously used and enabled us to construct new mass-lumped tetrahedral elements for 3D wave propagation modelling. The new degree-2 and degree-3 elements require significantly fewer nodes than previous versions and mass-lumped tetrahedral elements of higher degree had not been found before. We also present a new accuracy condition for evaluating the stiffness matrix-vector product. This enabled us to obtain tailored quadrature rules for the new elements that further reduce the computational cost. Subject mass lumpingtetrahedral elementspectral elementwave equation To reference this document use: http://resolver.tudelft.nl/uuid:4ebcb0ef-4d71-4aae-88ed-ac8a0bdd465a Event 14th International Conference on Mathematical and Numerical Aspects of Wave Propagation, 2019-08-25 → 2019-08-30, Vienna University of Technology (TU Wien), Vienna, Austria Part of collection Institutional Repository Document type abstract Rights © 2019 S. Geevers, W.A. Mulder, J van der Vegt Files PDF Geevers_New_Mass_Lumped_T ... ng_170.pdf 232.91 KB Close viewer /islandora/object/uuid:4ebcb0ef-4d71-4aae-88ed-ac8a0bdd465a/datastream/OBJ/view