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

Vicente Cutanda Henriquez; Peter Risby Andersen; Jakob Søndergaard Jensen; P. Møller Juhl; J. Sánchez-Dehesa

doi:10.1142/S0218396X17500060

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

Vicente Cutanda Henriquez
, Peter Risby Andersen
, Jakob Søndergaard Jensen
, P. Møller Juhl
, J. Sánchez-Dehesa

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Abstract

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 language	English
Journal	Journal of Computational Acoustics
Volume	25
Issue number	4
Number of pages	11
ISSN	0218-396X
DOIs	https://doi.org/10.1142/S0218396X17500060
Publication status	Published - 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

Keywords

Boundary element method
Acoustic metamaterials
Viscous and thermal acoustic losses

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10.1142/S0218396X17500060

1 1750006Accepted author manuscript, 1.52 MB

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

abstract = "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",

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AU - Møller Juhl, P.

AU - Sánchez-Dehesa, J.

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AB - 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

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KW - Viscous and thermal acoustic losses

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

Abstract

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Keywords

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