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  1. Computation of linear dispersive electromagnetic waves.

    Article - En anglais

    Numerical solutions of the equations describing electromagnetic pulse propagation in geometrically complex Debye-dispersive dielectrics are used in the development of safety standards for human exposure to non-ionizing radiation.

    Debye dispersion is a relaxation process, a phenomenon which occurs when the underlying material is forced into non-equilibrium due to the passing waves.

    This relaxation is typically stiff in applications, and the system of equations is then singularly perturbed.

    Such systems are notoriously expensive to solve with standard numerical methods.

    We review previous work related to the numerical solution of such problems, and consider a representative numerical scheme in order to elucidate the nature of the challenge posed to Computational Electromagnetics by the stiffness.

    Further, an analysis of the stiffness leads us to propose a scheme that seems'natural'for the problem at hand.

    Mots-clés Pascal : Théorie, Méthode numérique, Relaxation diélectrique, Diélectrique, Géométrie, Prévention accident, Norme, Technique perturbation, Théorie champ électromagnétique, Transmission onde électromagnétique

    Mots-clés Pascal anglais : Debye dispersion, Computational electromagnetics, Theory, Numerical methods, Dielectric relaxation, Dielectric materials, Geometry, Accident prevention, Standards, Perturbation techniques, Electromagnetic field theory, Electromagnetic wave transmission

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 96-0169643

    Code Inist : 001D04B04. Création : 199608.