Diffraction by an acoustic grating perturbed by a bounded obstacle
| Main Authors: | Bonnet-Bendhia, Anne-Sophie, Dhia, Anne-Sophie Bonnet-Ben, Ramdani, Karim |
|---|---|
| Format: | Article Journal |
| Terbitan: |
, 2002
|
| Online Access: |
https://zenodo.org/record/291422 |
Daftar Isi:
- International audience ; 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.