369 citations · 1.3k across the 38 of their papers we have counts for
6 papers · 1 filter
From zero transmission to trapped modes in waveguides
Lucas Chesnel, Vincent Pagneux
We consider the time-harmonic scattering wave problem in a 2D waveguide at wavenumber such that one mode is propagating in the far field. In a first step, for a given , play…
Duality of bounded and scattering wave systems with local symmetries
I. Kiorpelidis, F. K. Diakonos, G. Theocharis +4
We investigate the spectral properties of a class of hard-wall bounded systems, described by potentials exhibiting domain-wise different local symmetries. Tuning the distance of th…
Acoustic Propagation in lined ducts with varying cross-section using a Mild-Slope approximation
Maaz Farooqui, Yves Aurégan, Vincent Pagneux
A modelling of low-frequency sound propagation in slowly varying ducts with smoothly varying lining is proposed leading to an acoustic mild-slope equation analogue to the with mild…
Explicit approximation of the wavenumber for lined ducts
Maaz Farooqui, Yves Aurégan, Vincent Pagneux
For acoustic waves in lined ducts, at given frequencies, the dispersion relation leads to a transcendental equation for the wavenumber that has to be solved by numerical methods. B…
Using liner surface modes in ducts to make obstacles reflectionless
Maaz Farooqui, Yves Aurégan, Vincent Pagneux
Acoustic cloaking for the suppression of backscattering inside ducts is proposed in the audible range where plane waves are curved around the object using the surface modes of the…
Trapped modes and reflectionless modes as eigenfunctions of the same spectral problem
Anne-Sophie Bonnet-Ben Dhia, Lucas Chesnel, Vincent Pagneux
We consider the reflection-transmission problem in a waveguide with obstacle. At certain frequencies, for some incident waves, intensity is perfectly transmitted and the reflected…