Prediction of scattering effects by sonic crystal noise barriers in 2-D and 3-D finite difference simulations

Sorrel Harriet Nicola Hoare; Damian Thomas Murphy

Prediction of scattering effects by sonic crystal noise barriers in 2-D and 3-D finite difference simulations

Sorrel Harriet Nicola Hoare, Damian Thomas Murphy

Research output: Contribution to conference › Paper › peer-review

Abstract

Sonic crystals have been investigated in recent years both as a potential form of noise barrier, and as a form of sonic art aimed at enhancing perception of the surrounding acoustic environment. The broader aim of this research is concerned with the auralization of these structures, which has, as yet, rarely been attempted. In a previous publication, prediction of the acoustic wave propagation through 2-D arrays of solid, cylindrical scatterers embedded in air was performed in 2-D Finite Difference Time Domain (FDTD) simulations. In this paper, the model has been extended into the third dimension and the results are compared with those obtained in the previous experiment. In both the 2-D and 3-D simulations the location of the fundamental band gap corresponds with the predicted location - predictions being based on simple theoretical considerations relating the frequency of the transmission gaps to the array configuration.

Original language	English
Publication status	Published - 24 Apr 2012
Event	Acoustics 2012 - Nantes, France Duration: 23 Apr 2012 → 27 Apr 2012 http://www.acoustics2012-nantes.org/index.php/en.html

Conference

Conference	Acoustics 2012
Country/Territory	France
City	Nantes
Period	23/04/12 → 27/04/12
Other	Joint meeting : 11th Congrès Français d'Acoustique and 2012 IOA annual meeting
Internet address	http://www.acoustics2012-nantes.org/index.php/en.html

Access to Document

H000457.pdfFinal published version, 1.45 MB

Cite this

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title = "Prediction of scattering effects by sonic crystal noise barriers in 2-D and 3-D finite difference simulations",

abstract = "Sonic crystals have been investigated in recent years both as a potential form of noise barrier, and as a form of sonic art aimed at enhancing perception of the surrounding acoustic environment. The broader aim of this research is concerned with the auralization of these structures, which has, as yet, rarely been attempted. In a previous publication, prediction of the acoustic wave propagation through 2-D arrays of solid, cylindrical scatterers embedded in air was performed in 2-D Finite Difference Time Domain (FDTD) simulations. In this paper, the model has been extended into the third dimension and the results are compared with those obtained in the previous experiment. In both the 2-D and 3-D simulations the location of the fundamental band gap corresponds with the predicted location - predictions being based on simple theoretical considerations relating the frequency of the transmission gaps to the array configuration.",

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T1 - Prediction of scattering effects by sonic crystal noise barriers in 2-D and 3-D finite difference simulations

AU - Hoare, Sorrel Harriet Nicola

AU - Murphy, Damian Thomas

PY - 2012/4/24

Y1 - 2012/4/24

N2 - Sonic crystals have been investigated in recent years both as a potential form of noise barrier, and as a form of sonic art aimed at enhancing perception of the surrounding acoustic environment. The broader aim of this research is concerned with the auralization of these structures, which has, as yet, rarely been attempted. In a previous publication, prediction of the acoustic wave propagation through 2-D arrays of solid, cylindrical scatterers embedded in air was performed in 2-D Finite Difference Time Domain (FDTD) simulations. In this paper, the model has been extended into the third dimension and the results are compared with those obtained in the previous experiment. In both the 2-D and 3-D simulations the location of the fundamental band gap corresponds with the predicted location - predictions being based on simple theoretical considerations relating the frequency of the transmission gaps to the array configuration.

AB - Sonic crystals have been investigated in recent years both as a potential form of noise barrier, and as a form of sonic art aimed at enhancing perception of the surrounding acoustic environment. The broader aim of this research is concerned with the auralization of these structures, which has, as yet, rarely been attempted. In a previous publication, prediction of the acoustic wave propagation through 2-D arrays of solid, cylindrical scatterers embedded in air was performed in 2-D Finite Difference Time Domain (FDTD) simulations. In this paper, the model has been extended into the third dimension and the results are compared with those obtained in the previous experiment. In both the 2-D and 3-D simulations the location of the fundamental band gap corresponds with the predicted location - predictions being based on simple theoretical considerations relating the frequency of the transmission gaps to the array configuration.

M3 - Paper

T2 - Acoustics 2012

Y2 - 23 April 2012 through 27 April 2012

ER -