Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity

In this paper, the propagation and scattering of acoustic waves in a flexible wave-guide involving step discontinuity at an interface is considered. The emerging boundary value problem is non-Sturm-Liouville and is solved by employing a hybrid mode-matching technique. The physical scattering process...

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Detalles Bibliográficos
Autores principales: Afzal, Muhammad, Nawaz, Rab, Ayub, Muhammad, Wahab, Abdul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4118954/
https://www.ncbi.nlm.nih.gov/pubmed/25084019
http://dx.doi.org/10.1371/journal.pone.0103807
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author Afzal, Muhammad
Nawaz, Rab
Ayub, Muhammad
Wahab, Abdul
author_facet Afzal, Muhammad
Nawaz, Rab
Ayub, Muhammad
Wahab, Abdul
author_sort Afzal, Muhammad
collection PubMed
description In this paper, the propagation and scattering of acoustic waves in a flexible wave-guide involving step discontinuity at an interface is considered. The emerging boundary value problem is non-Sturm-Liouville and is solved by employing a hybrid mode-matching technique. The physical scattering process and attenuation of duct modes versus frequency regime and change of height is studied. Moreover, the mode-matching solution is validated through a series of numerical experiments by testifying the power conservation identity and matching interface conditions.
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spelling pubmed-41189542014-08-04 Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity Afzal, Muhammad Nawaz, Rab Ayub, Muhammad Wahab, Abdul PLoS One Research Article In this paper, the propagation and scattering of acoustic waves in a flexible wave-guide involving step discontinuity at an interface is considered. The emerging boundary value problem is non-Sturm-Liouville and is solved by employing a hybrid mode-matching technique. The physical scattering process and attenuation of duct modes versus frequency regime and change of height is studied. Moreover, the mode-matching solution is validated through a series of numerical experiments by testifying the power conservation identity and matching interface conditions. Public Library of Science 2014-08-01 /pmc/articles/PMC4118954/ /pubmed/25084019 http://dx.doi.org/10.1371/journal.pone.0103807 Text en © 2014 Afzal et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Afzal, Muhammad
Nawaz, Rab
Ayub, Muhammad
Wahab, Abdul
Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity
title Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity
title_full Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity
title_fullStr Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity
title_full_unstemmed Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity
title_short Acoustic Scattering in Flexible Waveguide Involving Step Discontinuity
title_sort acoustic scattering in flexible waveguide involving step discontinuity
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4118954/
https://www.ncbi.nlm.nih.gov/pubmed/25084019
http://dx.doi.org/10.1371/journal.pone.0103807
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