Characterization of acoustic metasurface absorbers usingnumerical methods including viscous and thermal losses

Peter Risby Andersen, Vicente Cutanda Henriquez, Luis Godinho, Jean-Daniel Chazot, Jesús Carbajo San Martín

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

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Abstract

Acoustic meta-surfaces are periodic structures commonly realised using subwavelength sized resonators. One of their possible applications is in noise control where they can be applied to create very compact sound absorbers. Numerical modelling and characterization of meta-surfaces require the inclusion of acoustic viscous and thermal dissipation effects. Several variations of numerical methods are available that include such losses, each having different computational benefits and limitations. In this work, numerical methods that incorporate dissipation are applied to study the normal absorbing properties of several meta-surface designs. The results will be used to both benchmark the different numerical methods, but also to extract data for simplified fluid equivalent models that can be used as input for large-scale simulations including meta-surfaces.
Original languageEnglish
Title of host publicationProceedings of internoise 2019
Number of pages11
PublisherInternational Institute of Noise Control Engineering
Publication date2019
Article number1889
ISBN (Print)978-84-87985-31-7
Publication statusPublished - 2019
Event48th International Congress and Exhibition on Noise Control Engineering - IFEMA Palacio Municial, Madrid, Spain
Duration: 16 Jun 201919 Jun 2019
https://internoise2019.org/

Conference

Conference48th International Congress and Exhibition on Noise Control Engineering
LocationIFEMA Palacio Municial
CountrySpain
CityMadrid
Period16/06/201919/06/2019
Internet address

Keywords

  • Numerical methods
  • Viscothermal losses
  • Sound absorption
  • Meta-surfaces

Cite this

Andersen, P. R., Cutanda Henriquez, V., Godinho, L., Chazot, J-D., & Carbajo San Martín, J. (2019). Characterization of acoustic metasurface absorbers usingnumerical methods including viscous and thermal losses. In Proceedings of internoise 2019 [1889] International Institute of Noise Control Engineering.
Andersen, Peter Risby ; Cutanda Henriquez, Vicente ; Godinho, Luis ; Chazot, Jean-Daniel ; Carbajo San Martín, Jesús. / Characterization of acoustic metasurface absorbers usingnumerical methods including viscous and thermal losses. Proceedings of internoise 2019. International Institute of Noise Control Engineering, 2019.
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abstract = "Acoustic meta-surfaces are periodic structures commonly realised using subwavelength sized resonators. One of their possible applications is in noise control where they can be applied to create very compact sound absorbers. Numerical modelling and characterization of meta-surfaces require the inclusion of acoustic viscous and thermal dissipation effects. Several variations of numerical methods are available that include such losses, each having different computational benefits and limitations. In this work, numerical methods that incorporate dissipation are applied to study the normal absorbing properties of several meta-surface designs. The results will be used to both benchmark the different numerical methods, but also to extract data for simplified fluid equivalent models that can be used as input for large-scale simulations including meta-surfaces.",
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Andersen, PR, Cutanda Henriquez, V, Godinho, L, Chazot, J-D & Carbajo San Martín, J 2019, Characterization of acoustic metasurface absorbers usingnumerical methods including viscous and thermal losses. in Proceedings of internoise 2019., 1889, International Institute of Noise Control Engineering, 48th International Congress and Exhibition on Noise Control Engineering , Madrid, Spain, 16/06/2019.

Characterization of acoustic metasurface absorbers usingnumerical methods including viscous and thermal losses. / Andersen, Peter Risby; Cutanda Henriquez, Vicente; Godinho, Luis; Chazot, Jean-Daniel; Carbajo San Martín, Jesús.

Proceedings of internoise 2019. International Institute of Noise Control Engineering, 2019. 1889.

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

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AU - Godinho, Luis

AU - Chazot, Jean-Daniel

AU - Carbajo San Martín, Jesús

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N2 - Acoustic meta-surfaces are periodic structures commonly realised using subwavelength sized resonators. One of their possible applications is in noise control where they can be applied to create very compact sound absorbers. Numerical modelling and characterization of meta-surfaces require the inclusion of acoustic viscous and thermal dissipation effects. Several variations of numerical methods are available that include such losses, each having different computational benefits and limitations. In this work, numerical methods that incorporate dissipation are applied to study the normal absorbing properties of several meta-surface designs. The results will be used to both benchmark the different numerical methods, but also to extract data for simplified fluid equivalent models that can be used as input for large-scale simulations including meta-surfaces.

AB - Acoustic meta-surfaces are periodic structures commonly realised using subwavelength sized resonators. One of their possible applications is in noise control where they can be applied to create very compact sound absorbers. Numerical modelling and characterization of meta-surfaces require the inclusion of acoustic viscous and thermal dissipation effects. Several variations of numerical methods are available that include such losses, each having different computational benefits and limitations. In this work, numerical methods that incorporate dissipation are applied to study the normal absorbing properties of several meta-surface designs. The results will be used to both benchmark the different numerical methods, but also to extract data for simplified fluid equivalent models that can be used as input for large-scale simulations including meta-surfaces.

KW - Numerical methods

KW - Viscothermal losses

KW - Sound absorption

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Andersen PR, Cutanda Henriquez V, Godinho L, Chazot J-D, Carbajo San Martín J. Characterization of acoustic metasurface absorbers usingnumerical methods including viscous and thermal losses. In Proceedings of internoise 2019. International Institute of Noise Control Engineering. 2019. 1889