A Numerical Model of an Acoustic Metamaterial Using the Boundary Element Method Including Viscous and Thermal Losses

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In recent years, boundary element method (BEM) and finite element method (FEM) implementations of acoustics in fluids with viscous and thermal losses have been developed. They are based on the linearized Navier–Stokes equations with no flow. In this paper, such models with acoustic losses are applied to an acoustic metamaterial. Metamaterials are structures formed by smaller, usually periodic, units showing remarkable physical properties when observed as a whole. Acoustic losses are relevant in metamaterials in the millimeter scale. In addition, their geometry is intricate and challenging for numerical implementation. The results are compared with existing measurements
Original languageEnglish
JournalJournal of Computational Acoustics
Volume25
Issue number4
Number of pages11
ISSN0218-396X
DOIs
Publication statusPublished - 2016

Bibliographical note

Electronic version of an article published as V. Cutanda Henríquez et al, J. Comp. Acous. 25, 1750006 (2017) - https://doi.org/10.1142/S0218396X17500060
Erratum to this article can be found at:https://doi.org/10.1142/S0218396X17920011

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    Research areas

  • Boundary element method, Acoustic metamaterials, Viscous and thermal acoustic losses
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