Two-grid hp-version DGFEMs for strongly monotone second-order quasilinear elliptic PDEs

In this article we develop the a priori error analysis of so-called two-grid hp-version discontinuous Galerkin finite element methods for the numerical approximation of strongly monotone second-order quasilinear partial differential equations. In this setting, the fully nonlinear problem is first ap...

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Bibliographic Details
Main Authors: Congreve, Scott, Houston, Paul, Wihler, Thomas P.
Format: Article
Published: Wiley-VCH 2011
Online Access:https://eprints.nottingham.ac.uk/1481/
Description
Summary:In this article we develop the a priori error analysis of so-called two-grid hp-version discontinuous Galerkin finite element methods for the numerical approximation of strongly monotone second-order quasilinear partial differential equations. In this setting, the fully nonlinear problem is first approximated on a coarse finite element space V(H,P). The resulting `coarse' numerical solution is then exploited to provide the necessary data needed to linearize the underlying discretization on the finer space V(h,p); thereby, only a linear system of equations is solved on the richer space V(h,p). Numerical experiments confirming the theoretical results are presented.