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Localization and increased damping in irregular acoustic cavities Laboratoire de Physique de la Mati`ere Condensee, UMR CNRS 7643, Ecole
 

Summary: Localization and increased damping in irregular acoustic cavities
S. F´elix
Laboratoire de Physique de la Mati`ere Condens´ee, UMR CNRS 7643, Ecole
Polytechnique, 91128 Palaiseau Cedex, France.
M. Asch
Laboratoire Ami´enois de Math´ematique Fondamentale et Appliqu´ee, UMR
CNRS 6140, Universit´e de Picardie Jules Verne, 80039 Amiens Cedex 1,
France.
M. Filoche and B. Sapoval
Laboratoire de Physique de la Mati`ere Condens´ee, UMR CNRS
7643, Ecole Polytechnique, 91128 Palaiseau Cedex, France.
Centre de Math´ematiques et de Leurs Applications, UMR CNRS 8536,
Ecole Normale Sup´erieure, 94235 Cachan Cedex, France.
Localization in irregular cavities 1
Abstract
The present study is concerned with the properties of 2D shallow cav-
ities having an irregular boundary. The eigenmodes are calculated
numerically on various examples, and it is shown first that, whatever
the shape and characteristic sizes of the boundary, irregularity always
induces an increase of localized eigenmodes and a global decrease of

  

Source: Asch, Mark - Faculté de Mathématiques et d' Informatique, Université de Picardie Jules Verne

 

Collections: Mathematics; Computer Technologies and Information Sciences