Implementation aspects of the Boundary Element Method including viscous and thermal losses

Vicente Cutanda Henriquez, Peter Møller Juhl

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The implementation of viscous and thermal losses using the Boundary Element Method (BEM) is based on the Kirchhoff’s dispersion relation and has been tested in previous work using analytical test cases and comparison with measurements. Numerical methods that can simulate sound fields in fluids including losses are particularly interesting whenever small cavities and narrow passages are present, as is the case with many acoustic devices such as transducers and small audio appliances.
The present paper describes current work aimed at improving the method by addressing some specific issues related with mesh definition, geometrical singularities and treatment of closed cavities. These issues are specific of the BEM with losses. Using examples, some strategies are presented that can alleviate shortcomings and improve performance.
Original languageEnglish
Title of host publicationProceedings of 43rd International Congress on Noise Control Engineering : Internoise 2014
EditorsJohn Davy, Charles Don, Terry McMinn, Liz Dowsett, Norm Broner, Marion Burgess
Number of pages8
Place of PublicationMelbourne, Australia
PublisherThe Australian Acoustical Society
Publication date16 Nov 2014
Article number858
ISBN (Electronic)978-0-909882-04-4
Publication statusPublished - 16 Nov 2014
Externally publishedYes

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