Thehp-local discontinuous Galerkin method for low-frequency time-harmonic Maxwell equations

Authors:
Ilaria Perugia;Dominik Schötzau
Affiliations:
Dipartimento di Matematica, Università di Pavia, Via Ferrata 1, 27100 Pavia, Italy;Department of Mathematics, University of Basel, Rheinsprung 21, CH-4051 Basel, Switzerland
Venue:
Mathematics of Computation
Year:
2003

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Abstract

The local discontinuous Galerkin method for the numerical approximation of the time-harmonic Maxwell equations in a low-frequency regime is introduced and analyzed. Topologically nontrivial domains and heterogeneous media are considered, containing both conducting and insulating materials. The presented method involves discontinuous Galerkin discretizations of the curl-curl and grad-div operators, derived by introducing suitable auxiliary variables and so-called numerical fluxes. An hp-analysis is carried out and error estimates that are optimal in the meshsize h and slightly suboptimal in the approximation degree p are obtained.