High-order localized time integration for grid-induced stiffness
We discuss two time integration techniques, aimed at overcoming local grid-induced stiffness in discontinuous Galerkin methods. A local time-stepping approach, utilizing the local properties of the scheme, is shown to work very well. Recently developed additive Runge-Kutta methods are more general and found to be promising when combined with efficient local preconditioning.
- View record in Web of Science
Keywords: discontinuous Galerkin methods ; penalty methods ; nodal elements ; unstructured grids ; local time-stepping ; additive Runge-Kutta methods ; high-order accuracy ; grid induced stiffness ; Maxwell's equations ; conservation laws
2nd MIT Conference on Computational Fluid and Solid Mechanics, MIT, CAMBRIDGE, MA, JUN 17-20, 2003
Record created on 2013-11-12, modified on 2016-08-09