A characterization of singular electromagnetic fields by an inductive approach
F. Assous 1, P. Ciarlet, Jr. 2, E. Garcia 31 Ariel University Center, 40700 Ariel and Bar-Ilan University, 52900 Ramat-Gan, Israel
2 Laboratoire POEMS, UMR 2706 CNRS
3 ASTRIUM Space Transportation, Electrical Design Office and EMC, 66 route de Verneuil, BP 3002, 78133 Les Mureaux, France
Received by the editors May 18, 2007 and, in revised form, September 25, 2007
In this article, we are interested in the mathematical modeling of singular electromagnetic fields, in a non-convex polyhedral domain. We first describe the local trace (i. e. defined on a face) of the normal derivative of an L-2 function, with L-2 Laplacian. Among other things, this allows us to describe dual singularities of the Laplace problem with homogeneous Neumann boundary condition. We then provide generalized integration by parts formulae for the Laplace, divergence and curl operators. With the help of these results, one can split electromagnetic fields into regular and singular parts, which are then characterized. We also study the particular case of divergence-free and curl-free fields, and provide non-orthogonal decompositions that are numerically computable.
Key words: Maxwell's equations, singular geometries, polyhedral domains
Email: FranckAssous@netscape.net (F. Assous), email@example.com (P. Ciarlet, Jr.), firstname.lastname@example.org (E. Garcia)