Modeling of the multimodal radiation from an open-ended waveguide

Simon Félix; Jean-Baptiste Doc; Matthew Boucher

doi:10.1121/1.5041268

Article dans une revue

Modeling of the multimodal radiation from an open-ended waveguide

Simon Félix ¹ Jean-Baptiste Doc ² Matthew Boucher ³

1 LAUM - Laboratoire d'Acoustique de l'Université du Mans

2 LMSSC - Laboratoire de Mécanique des Structures et des Systèmes Couplés

3 Department of Mechanical Engineering [Leuven]

Abstract : The multimodal radiation from the open end of a cylindrical waveguide with arbitrary wall thickness is solved by deriving algebraic solutions of the radiation impedance matrix, without restrictive hypothesis on the frequency range. The basic idea of the method is to turn the original unbounded problem into the problem of a cylindrical waveguide embedded in an infinite waveguide with an annular perfectly matched layer (PML) on its wall. Then, using a multimodal formalism of the guided wave propagation and a complex coordinate stretching PML, algebraic expressions are derived for the continuity and radiation conditions in this coupled system.

Keywords : Partial differential equations Mechanical instruments Operator theory Acoustic transducers Vector fields Finite difference methods Exhaust engine Wave mechanics Acoustic waveguides Musical instruments

Type de document :

Article dans une revue

Domaine :

Physique [physics] / Mécanique [physics] / Acoustique [physics.class-ph]

Liste complète des métadonnées

https://hal-univ-lemans.archives-ouvertes.fr/hal-02406123
Contributeur : Simon Félix Connectez-vous pour contacter le contributeur
Soumis le : jeudi 12 décembre 2019 - 08:39:58
Dernière modification le : jeudi 25 novembre 2021 - 09:16:03

Modeling of the multimodal radiation from an open-ended waveguide

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