A Numerical Approach to Space-Time Finite Elements for the Wave Equation
arXiv:gr-qc/0601099 · doi:10.1016/j.jcp.2007.04.021
Abstract
We study a space-time finite element approach for the nonhomogeneous wave equation using a continuous time Galerkin method. We present fully implicit examples in 1+1, 2+1, and 3+1 dimensions using linear quadrilateral, hexahedral, and tesseractic elements. Krylov solvers with additive Schwarz preconditioning are used for solving the linear system. We introduce a time decomposition strategy in preconditioning which significantly improves performance when compared with unpreconditioned cases.
9 pages, 5 figures, 5 tables