Analysis of transient scattering problems using a discontinuous Galerkin method: application to the shielding effectiveness of enclosures with heterogeneous walls

Abstract

International audienceIn this paper, different formulations of Maxwell equations are combined for computing the shielding effectiveness of enclosures made from heterogeneous periodic materials. The validity of the homogenized parameters given by Maxwell-Garnett rules in the frequency domain are tested in the time domain by using a nodal DG method, which uses an interface condition based on analytical solution in the frequency domain to replace a conductive sheet. This interface condition allows to avoid meshing the thin sheet, thus reducing the computational cost. Results of scattering by composite enclosures are presented in the frequency domain thanks to a FFT

Efficient Krylov‐based 3D FVTD schemes with adaptive domain decomposition for graphene and nanostructured EMC components

“…Moreover, results are compared with those from very fine FDTD serialized implementations and from other algorithms used as reference solutions, with all simulations performed on a 3.47GHz Intel Xeon dual‐processor X5690 computer with 96GB RAM. Particularly, the reference plots are obtained via the numerical techniques of Sarto et al, Boubekeur et al, and Schilders et al The latter methods (and some of the measurements in these works) have been successfully verified by means of commercial computational packages and alternative computational schemes for a multitude of problems. Therefore, the extracted waveforms can be safely deemed trustworthy and capable of acting as reference solutions.…”

“…One of the most flourishing fields that contributes notably in the evolution of high‐end electromagnetic compatibility (EMC) nanotechnology components is the design, assessment, and fabrication of advanced media with unique properties and reconfigurable performance . Among them, graphene and metamaterials have gained tremendous recognition, due to their compact size, large‐density integration, and efficient energy handling.…”

Special Issue: The 9th International Symposium on Electric and Magnetic Fields (EMF 2013)

“…Caire et al present a semi‐analytical computation of the quasi‐static field induced by a 3D eddy‐current probe scanning a 2D layered conductor with parallel rough interfaces. Finally, Durochat et al and Boubekeur et al present Discontinuous Galerkin Time Domain methods for the simulation of electromagnetic wave problems. The former present an application to the simulation of human exposure to electromagnetic waves, while the latter present an application to the evaluation of the shielding effectiveness of enclosures with heterogeneous walls.…”