Title
High-order explicit local time-stepping methods for damped wave equations
Abstract
Locally refined meshes impose severe stability constraints on explicit time-stepping methods for the numerical simulation of time dependent wave phenomena. Local time-stepping methods overcome that bottleneck by using smaller time-steps precisely where the smallest elements in the mesh are located. Starting from classical Adams-Bashforth multi-step methods, local time-stepping methods of arbitrarily high order of accuracy are derived for damped wave equations. When combined with a finite element discretization in space with an essentially diagonal mass matrix, the resulting time-marching schemes are fully explicit and thus inherently parallel. Numerical experiments with continuous and discontinuous Galerkin finite element discretizations corroborate the expected rates of convergence and illustrate the usefulness of these local time-stepping methods.
Year
DOI
Venue
2013
10.1016/j.cam.2012.09.046
J. Computational Applied Mathematics
Keywords
DocType
Volume
classical adams-bashforth multi-step method,finite element discretization,wave equation,numerical experiment,explicit time-stepping method,local time-stepping method,discontinuous galerkin finite element,numerical simulation,time dependent wave phenomenon,explicit local time-stepping method,smallest element,local time,finite element methods,numerical analysis,finite element
Journal
239,
ISSN
Citations 
PageRank 
0377-0427
12
0.67
References 
Authors
15
2
Name
Order
Citations
PageRank
Marcus J. Grote140151.61
Teodora Mitkova2373.20