Titre : |
Diffraction by an acoustic grating perturbed by a bounded obstacle |
Année : |
2002 |
Type : |
article (revue avec comité de lecture) |
Auteurs : |
A.-S. Bonnet-BenDhia, K. Ramdani |
Résumé : |
An original approach to solve 2D time harmonic diffraction problems involving locally perturbed gratings is proposed. The propagation medium is composed of a periodically stratified half-space and a homogeneous half-space containing a bounded obstacle. Using Fourier and Floquet transforms and integral representations, the diffraction problem is formulated as a coupled problem of Fredholm type with two unknowns: the trace of the diffracted field on the interface separating the two half-spaces on one hand, and the restriction of the diffracted field to a bounded domain surrounding the obstacle, on the other hand. |
Thèmes : |
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Référence : |
Advances in Computational Mathematics - vol. 16(2-3) (pp 113-138 ) |