Higher-order mode filtering by a resistive layer-Reference-Cited by-同舟云学术

Higher-order mode filtering by a resistive layer

Published:2023-10-01 Issue:10 Volume:3 Page:
ISSN:2691-1191
Container-title:JASA Express Letters
language:en
Short-container-title:

Author:

Kuznetsova Svetlana¹²,Aurégan Yves¹^ORCID,Pagneux Vincent¹^ORCID

Affiliation:

1. Laboratoire d'Acoustique de l'Université du Mans (LAUM), UMR 6613, Institut d'Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université, Avenue O. Messiaen 1 , 72085 LE MANS CEDEX 9, France

2. Univ. Lille, CNRS, Centrale Lille, Junia, Univ. Polytechnique Hauts-de-France, UMR 8520 – IEMN – Institut d'Electronique de Microélectronique 2 , et de Nanotechnologie, F-59000 Lille, France Svetlana.Kuznetsova@univ-lemans.fr , yves.auregan@univ-lemans.fr , vincent.pagneux@univ-lemans.fr

Abstract

A method for filtering higher-order acoustic modes using a resistive layer is proposed and applied to a two-dimensional rectangular waveguide with a quiescent fluid. An analogue of Cremer's criterion is discussed and used to obtain the optimal modal attenuation of the non-planar waves while the plane wave is preserved. Numerical validation of the concept is performed for a straight waveguide and an abrupt expansion in a waveguide.

Funder

Agence Nationale de la Recherche

Publisher

Acoustical Society of America (ASA)

Subject

General Medicine

Link

https://pubs.aip.org/asa/jel/article-pdf/doi/10.1121/10.0021283/18156553/104001_1_10.0021283.pdf

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