Asymptotic behavior of acoustic waves scattered by very small obstacles

Autor: Sébastien Tordeux, Hélène Barucq, Julien Diaz, Vanessa Mattesi

Publikováno v: ESAIM: Mathematical Modelling and Numerical Analysis
ESAIM: Mathematical Modelling and Numerical Analysis, EDP Sciences, In press, 55, pp.705-731. ⟨10.1051/m2an/2020047⟩
ESAIM: Mathematical Modelling and Numerical Analysis, 2021, 55, pp.705-731. ⟨10.1051/m2an/2020047⟩

International audience; The direct numerical simulation of the acoustic wave scattering created by very small obstacles is very expensive, especially in three dimensions and even more so in time domain. The use of asymptotic models is very efficient

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c4ad810739c32184e25b177c35792a0
https://hal.archives-ouvertes.fr/hal-01250654v2/document

From the Newton Equation to the Wave Equation: The Case of Shock Waves

Autor: Marc Josien, Xavier Blanc

Publikováno v: Applied Mathematics Research eXpress
Applied Mathematics Research eXpress, 2017, ⟨10.1093/amrx/abx001⟩
Applied Mathematics Research eXpress, Oxford University Press (OUP): Policy H-Oxford Open Option A, 2017, ⟨10.1093/amrx/abx001⟩

International audience; Nous considérons la limite macroscopique d'une chaîne d'atomes interagissant de proche en proche par l'équation de Newton. Depuis les travaux de Blanc, Le Bris et Lions, on sait que cette limite est la solution d'une équat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ceeb2a83279e4c7751ef7b4da0411b8
https://doi.org/10.1093/amrx/abx001

Stability analysis of coupled ordinary differential systems with a string equation : application to a drilling mechanism

Autor: Barreau, Matthieu

Publikováno v: Automatic Control Engineering. Université Paul Sabatier-Toulouse III, 2019. English. ⟨NNT : 2019TOU30058⟩

This thesis is about the stability analysis of a coupled finite dimensional system and an infinite dimensional one. This kind of systems emerges in the physics since it is related to the modeling of structures for instance. The generic analysis of su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a671e2b0c29061cae56e93fb96a52c6c
https://theses.hal.science/tel-02194414v3/file/2019TOU30058B.pdf

Active acoustic noise control in a closed cavity

Autor: Boultifat, Chaouki Nacer

Publikováno v: Automatique. Ecole nationale supérieure Mines-Télécom Atlantique, 2019. Français. ⟨NNT : 2019IMTA0134⟩

This thesis deals with active noise control (ANC) in a cavity. The aim is to mitigate the effect of a disturbing sound wave at some points or in a volume. This is achieved using ananti-noise generated, for example, by a loudspeaker. This study requir

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______212::3ab3016051b924fbffc24cdd474b351b
https://tel.archives-ouvertes.fr/tel-02096011

Lectures on elliptic methods for hybrid inverse problems

Autor: Giovanni S. Alberti, Capdeboscq, Y.

Publikováno v: Société Mathématique de France, Paris, 25, pp.vii + 230, 2018, Cours Spécialisés [Specialized Courses], 978-2-85629-872-5
Julie DÉSERTI. Société Mathématique de France, Paris, 25, pp.vii + 230, 2018, Cours Spécialisés [Specialized Courses], Stéphane SEURET, 978-2-85629-872-5
Scopus-Elsevier

International audience; In recent years, several new imaging modalities have been developed in order to be able to detect physical parameters simultaneously at a high spatial resolution and with a high sensitivity to contrast. These new approaches ty

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e6803ddde094c49d1f545c64317a65ef
https://hal.archives-ouvertes.fr/hal-02083835