A numerical model of an acoustic metamaterial using the boundary element method including viscous and thermal losses

Peter Møller Juhl, Vicente Cutanda Henríquez, Peter Risby Andersen, Jacob Søndergaard Jensen, Jose Sánchez-Dehesa

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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Resumé

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.
OriginalsprogEngelsk
Artikelnummer1750006
TidsskriftJournal of Computational Acoustics
Vol/bind25
Udgave nummer4
Antal sider11
ISSN0218-396X
DOI
StatusUdgivet - 2017

Fingeraftryk

Metamaterials
boundary element method
Boundary element method
Boundary Elements
Numerical models
Acoustics
acoustics
Physical property
Navier-Stokes Equations
Physical properties
physical properties
Finite element method
Unit
Geometry
Hot Temperature
geometry
Model

Citer dette

Juhl, Peter Møller ; Cutanda Henríquez, Vicente ; Andersen, Peter Risby ; Jensen, Jacob Søndergaard ; Sánchez-Dehesa, Jose. / A numerical model of an acoustic metamaterial using the boundary element method including viscous and thermal losses. I: Journal of Computational Acoustics. 2017 ; Bind 25, Nr. 4.
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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.",
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A numerical model of an acoustic metamaterial using the boundary element method including viscous and thermal losses. / Juhl, Peter Møller; Cutanda Henríquez, Vicente; Andersen, Peter Risby; Jensen, Jacob Søndergaard; Sánchez-Dehesa, Jose.

I: Journal of Computational Acoustics, Bind 25, Nr. 4, 1750006, 2017.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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T1 - A numerical model of an acoustic metamaterial using the boundary element method including viscous and thermal losses

AU - Juhl, Peter Møller

AU - Cutanda Henríquez, Vicente

AU - Andersen, Peter Risby

AU - Jensen, Jacob Søndergaard

AU - Sánchez-Dehesa, Jose

PY - 2017

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DO - 10.1142/S0218396X17500060

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JO - Journal of Computational Acoustics

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