[HTML][HTML] The point-interaction approximation for the fields generated by contrasted bubbles at arbitrary fixed frequencies

H Ammari, DP Challa, AP Choudhury, M Sini - Journal of Differential …, 2019 - Elsevier
We deal with the linearized model of the acoustic wave propagation generated by small
bubbles in the harmonic regime. We estimate the waves generated by a cluster of M small …

Homogenization of sound-soft and high-contrast acoustic metamaterials in subcritical regimes

F Feppon, H Ammari - ESAIM: Mathematical Modelling and …, 2023 - esaim-m2an.org
We propose a quantitative effective medium theory for two types of acoustic metamaterials
constituted of a large number N of small heterogeneities of characteristic size s, randomly …

Acoustic multiple scattering using recursive algorithms

FA Amirkulova, AN Norris - Journal of Computational Physics, 2015 - Elsevier
Acoustic multiple scattering by a cluster of cylinders in an acoustic medium is considered. A
fast recursive technique is described which takes advantage of the multilevel Block Toeplitz …

Eigenvalue problem in a solid with many inclusions: asymptotic analysis

VG Maz'ya, AB Movchan, MJ Nieves - Multiscale Modeling & Simulation, 2017 - SIAM
We construct the asymptotic approximation to the first eigenvalue and corresponding
eigensolution of Laplace's operator inside a domain containing a cloud of small rigid …

The Foldy--Lax approximation for the full electromagnetic scattering by small conductive bodies of arbitrary shapes

A Bouzekri, M Sini - Multiscale Modeling & Simulation, 2019 - SIAM
We deal with the electromagnetic wave propagation in the harmonic regime. We derive the
Foldy--Lax approximation of the scattered fields generated by a cluster of small conductive …

Analysis of the acoustic waves reflected by a cluster of small holes in the time-domain and the equivalent mass density

M Sini, H Wang, Q Yao - Multiscale Modeling & Simulation, 2021 - SIAM
We study the time-domain acoustic scattering problem by a cluster of small holes (ie, sound-
soft obstacles). Based on the retarded boundary integral equation method, we derive the …

Mesoscale approximation of the electromagnetic fields

A Bouzekri, M Sini - Annales Henri Poincaré, 2021 - Springer
The point-interaction approximation (or the Foldy–Lax approximation) of the electromagnetic
fields generated by a cluster of small-scaled inhomogeneities is derived in the mesoscale …

The Foldy‐Lax approximation of the scattered waves by many small bodies for the Lamé system

DP Challa, M Sini - Mathematische Nachrichten, 2015 - Wiley Online Library
We are concerned with the linearized, isotropic and homogeneous elastic scattering
problem by many small rigid obstacles of arbitrary, Lipschitz regular, shapes in 3D case. We …

Asymptotic analysis of solutions to transmission problems in solids with many inclusions

MJ Nieves - SIAM Journal on Applied Mathematics, 2017 - SIAM
We construct an asymptotic approximation to the solution of a transmission problem for a
body containing a region occupied by many small inclusions. The cluster of inclusions is …

Multiscale analysis of the acoustic scattering by many scatterers of impedance type

DP Challa, M Sini - Zeitschrift für angewandte Mathematik und Physik, 2016 - Springer
We are concerned with the acoustic scattering problem, at a frequency κ κ, by many small
obstacles of arbitrary shapes with impedance boundary condition. These scatterers are …