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Dive into the research topics where Anne-Sophie Bonnet-Ben Dhia is active.

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Featured researches published by Anne-Sophie Bonnet-Ben Dhia.


Journal of the Acoustical Society of America | 2008

Transparent boundary condition for acoustic propagation in lined guide with mean flow

Emmanuel Redon; Boureima Ouedraogo; Anne-Sophie Bonnet-Ben Dhia; Jean-François Mercier; Colin Chambeyron

A finite element analysis of acoustic radiation in an infinite lined guide with mean flow is studied. In order to bound the domain, transparent boundary conditions are introduced by means of a Dirichlet to Neumann (DtN) operator based on a modal decomposition. This decomposition is easy to carry out in a hard‐walled guide. With absorbant lining, many difficulties occur even without mean flow. Since the eigenvalue problem is no longer selfadjoint, acoustic modes are not orthogonal with respect to the L2‐scalar product. However, an orthogonality relation exists which permits writing the modal decomposition. For a lined guide with uniform mean flow, modes are no longer orthogonal but a new scalar product allows us to define the DtN operator. We consider first the case of an infinite rectangular two‐dimensional lined guide with uniform mean flow in order to present the methodology. Then, some extensions will be presented: non‐uniform two‐dimensional geometries by calculating potential mean flow, and cylindric...


Archive | 2011

Optimality of T-coercivity for scalar interface problems between dielectrics and metamaterials

Anne-Sophie Bonnet-Ben Dhia; Lucas Chesnel; Patrick Ciarlet


Archive | 2014

Transmission eigenvalues and far field invisibility for a finite number of incident/scattering directions

Anne-Sophie Bonnet-Ben Dhia; Lucas Chesnel; Sergey A. Nazarov


Archive | 2015

New Results - Numerical Analysis

Antoine Tonnoir; Sonia Fliss; Anne-Sophie Bonnet-Ben Dhia; Sébastien Imperiale; Juliette Chabassier; Bruno Burtschell; Dominique Chapelle; Philippe Moireau


Archive | 2014

New Results - Spectral theory and modal approaches for waveguides

Sonia Fliss; Patrick Joly; Khac Long Nguyen; Elizaveta Vasilevskaya; Geoffrey Beck; Jean-François Mercier; Anne-Sophie Bonnet-Ben Dhia; Camille Carvalho; Patrick Ciarlet


Archive | 2014

New Results - Wave propagation in non classical media

Anne-Sophie Bonnet-Ben Dhia; Camille Carvalho; Patrick Ciarlet; Maxence Cassier; Christophe Hazard; Patrick Joly; Eliane Bécache; Maryna Kachanovska; Valentin Vinoles; Aurore Castanié; Jean-François Mercier


Archive | 2014

New Results - Inverse problems

Laurent Bourgeois; Marc Bonnet; Rémi Cornaggia; Anne-Sophie Bonnet-Ben Dhia; Arnaud Recoquillay


Archive | 2014

New Results - Domain decomposition methods

Anne-Sophie Bonnet-Ben Dhia; Sonia Fliss; Antoine Tonnoir; Patrick Joly; Matthieu Lecouvez; Patrick Ciarlet; Léandre Giret


8th GDR Conference | 2014

Finite element computation of leaky modes in straight and helical elastic waveguides

Khac-Long Nguyen; Fabien Treyssède; Christophe Hazard; Anne-Sophie Bonnet-Ben Dhia


12ème Congrès Français d'Acoustique | 2014

Modélisation numérique des guides d’onde ouverts : cas des structures élastiques courbes

Khac-Long Nguyen; Fabien Treyssède; Anne-Sophie Bonnet-Ben Dhia; Christophe Hazard

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Christophe Hazard

École Normale Supérieure

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Colin Chambeyron

École Normale Supérieure

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Marc Lenoir

Centre national de la recherche scientifique

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Samir Kaddouri

Centre national de la recherche scientifique

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