μ-diff: An open-source Matlab toolbox for computing multiple scattering problems by disks

B Thierry, X Antoine, C Chniti, H Alzubaidi - Computer Physics …, 2015 - Elsevier
The aim of this paper is to describe a Matlab toolbox, called μ-diff, for modeling and
numerically solving two-dimensional complex multiple scattering by a large collection of …

Formulation and accuracy of on-surface radiation conditions for acoustic multiple scattering problems

H Alzubaidi, X Antoine, C Chniti - Applied Mathematics and Computation, 2016 - Elsevier
The aim of this paper is (1) to address an extension of the On-Surface Radiation Condition
(OSRC) method to multiple scattering by a cluster of convex obstacles and (2) to analyze the …

Localization of small obstacles from back-scattered data at limited incident angles with full-waveform inversion

H Barucq, F Faucher, H Pham - Journal of Computational Physics, 2018 - Elsevier
We investigate numerically the inverse problem of locating small circular obstacles in a
homogeneous medium from multi-frequency back-scattered data limited to four angles of …

[HTML][HTML] A remark on the single scattering preconditioner applied to boundary integral equations

B Thierry - Journal of Mathematical Analysis and Applications, 2014 - Elsevier
This article deals with boundary integral equation preconditioning for the multiple scattering
problem. The focus is put on the single scattering preconditioner, corresponding to the …

Numerical robustness of single-layer method with Fourier basis for multiple obstacle acoustic scattering in homogeneous media

H Barucq, J Chabassier, H Pham, S Tordeux - Wave Motion, 2018 - Elsevier
We investigate efficient methods to simulate the multiple scattering of obstacles in
homogeneous media. With a large number of small obstacles on a large domain, optimized …

A coupling between integral equations and on-surface radiation conditions for diffraction problems by non convex scatterers

SM Alzahrani, X Antoine, C Chniti - Mathematics, 2021 - mdpi.com
The aim of this paper is to introduce an orignal coupling procedure between surface integral
equation formulations and on-surface radiation condition (OSRC) methods for solving two …

Far field model for time reversal and application to selective focusing on small dielectric inhomogeneities

C Burkard, A Minut, K Ramdani - Inverse Problems and Imaging, 2013 - hal.science
Based on the time-harmonic far field model for small dielectric inclusions in 3D, we study the
so-called DORT method (DORT is the French acronym for''Diagonalization of the Time …

Spectral and condition number estimates of the acoustic single-layer operator for low-frequency multiple scattering in dilute media

X Antoine, B Thierry - Computer Methods in Applied Mechanics and …, 2013 - Elsevier
The aim of this paper is to develop an analysis of the distribution of the eigenvalues of the
acoustic single-layer potential for various low frequency two-dimensional multiple scattering …

[PDF][PDF] Imagerie ultrasonore de fantômes biologiques par optimisation topologique

P Sahuguet - 2012 - core.ac.uk
L'échographie est une méthode d'imagerie médicale qui repose sur la propagation d'ondes
acoustiques de hautes fréquences. L'origine de l'échographie repose sur deux découvertes …

Equivalent multipolar point-source modeling of small spheres for fast and accurate electromagnetic wave scattering computations

J Labat, V Péron, S Tordeux - Wave Motion, 2020 - Elsevier
In this paper, we develop reduced models to approximate the solution of the electromagnetic
scattering problem in an unbounded domain which contains a small perfectly conducting …