Hybrid Fourier pseudospectral/discontinuous Galerkin time-domain method for arbitrary boundary conditions

R. Pagan Munoz; M.C.J. Hornikx

doi:10.1121/1.4988418

Hybrid Fourier pseudospectral/discontinuous Galerkin time-domain method for arbitrary boundary conditions

R. Pagan Munoz, M.C.J. Hornikx

Building Acoustics

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic

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The wave-based Fourier Pseudospectral time-domain (Fourier-PSTD) method was shown to be an effective way of modeling outdoor acoustic propagation problems as described by the linearized Euler equations (LEE), but is limited to real-valued frequency independent boundary conditions and predominantly staircase-like boundary shapes. A hybrid modeling approach was recently presented to solve the LEE, coupling Fourier-PSTD with the nodal discontinuous Galerkin (DG) time domain method. The hybrid approach allows the computation of complex geometries by using the benefits of the DG methodology at the boundaries while keeping Fourier-PSTD in the bulk of the domain. This paper presents the implementation of arbitrary boundary conditions in the novel methodology, for instance, frequency dependent boundaries. The paper includes an application case of sound propagation for an urban scenario.

Originele taal-2	Engels
Titel	173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum
Plaats van productie	Boston, Massachusetts
Uitgeverij	Acoustical Society of America
Pagina's	3809-3809
Volume	141
ISBN van geprinte versie	0001-4966
DOI's	https://doi.org/10.1121/1.4988418
Status	Gepubliceerd - jun. 2017
Evenement	173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum (Acoustics2017), 25-29 June 2017, Boston, USA - Boston, Verenigde Staten van Amerika Duur: 25 jun. 2017 → 29 jun. 2017 http://acousticalsociety.org/content/acoustics-17-boston

Congres

Congres	173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum (Acoustics2017), 25-29 June 2017, Boston, USA
Verkorte titel	Acoustics'17
Land/Regio	Verenigde Staten van Amerika
Stad	Boston
Periode	25/06/17 → 29/06/17
Internet adres	http://acousticalsociety.org/content/acoustics-17-boston

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10.1121/1.4988418

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@inproceedings{81c0eb6bcbde4982bdf38d1d4b2d9415,

title = "Hybrid Fourier pseudospectral/discontinuous Galerkin time-domain method for arbitrary boundary conditions",

abstract = "The wave-based Fourier Pseudospectral time-domain (Fourier-PSTD) method was shown to be an effective way of modeling outdoor acoustic propagation problems as described by the linearized Euler equations (LEE), but is limited to real-valued frequency independent boundary conditions and predominantly staircase-like boundary shapes. A hybrid modeling approach was recently presented to solve the LEE, coupling Fourier-PSTD with the nodal discontinuous Galerkin (DG) time domain method. The hybrid approach allows the computation of complex geometries by using the benefits of the DG methodology at the boundaries while keeping Fourier-PSTD in the bulk of the domain. This paper presents the implementation of arbitrary boundary conditions in the novel methodology, for instance, frequency dependent boundaries. The paper includes an application case of sound propagation for an urban scenario.",

keywords = "Boundary value problems, Sound propagation, Linear Euler equations, Acoustic model, Pseudospectral time-domain method, Discontinuous Galerkin",

author = "{Pagan Munoz}, R. and M.C.J. Hornikx",

year = "2017",

month = jun,

doi = "10.1121/1.4988418",

language = "English",

isbn = "0001-4966",

volume = "141",

pages = "3809--3809",

booktitle = "173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum",

publisher = "Acoustical Society of America",

address = "United States",

note = "173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum (Acoustics2017), 25-29 June 2017, Boston, USA, Acoustics'17 ; Conference date: 25-06-2017 Through 29-06-2017",

url = "http://acousticalsociety.org/content/acoustics-17-boston",

}

Pagan Munoz, R & Hornikx, MCJ 2017, Hybrid Fourier pseudospectral/discontinuous Galerkin time-domain method for arbitrary boundary conditions. in 173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum. vol. 141, Acoustical Society of America, Boston, Massachusetts, blz. 3809-3809, 173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum (Acoustics2017), 25-29 June 2017, Boston, USA, Boston, Massachusetts, Verenigde Staten van Amerika, 25/06/17. https://doi.org/10.1121/1.4988418

Hybrid Fourier pseudospectral/discontinuous Galerkin time-domain method for arbitrary boundary conditions. / Pagan Munoz, R.; Hornikx, M.C.J.
173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum. Vol. 141 Boston, Massachusetts: Acoustical Society of America, 2017. blz. 3809-3809.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic

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N2 - The wave-based Fourier Pseudospectral time-domain (Fourier-PSTD) method was shown to be an effective way of modeling outdoor acoustic propagation problems as described by the linearized Euler equations (LEE), but is limited to real-valued frequency independent boundary conditions and predominantly staircase-like boundary shapes. A hybrid modeling approach was recently presented to solve the LEE, coupling Fourier-PSTD with the nodal discontinuous Galerkin (DG) time domain method. The hybrid approach allows the computation of complex geometries by using the benefits of the DG methodology at the boundaries while keeping Fourier-PSTD in the bulk of the domain. This paper presents the implementation of arbitrary boundary conditions in the novel methodology, for instance, frequency dependent boundaries. The paper includes an application case of sound propagation for an urban scenario.

AB - The wave-based Fourier Pseudospectral time-domain (Fourier-PSTD) method was shown to be an effective way of modeling outdoor acoustic propagation problems as described by the linearized Euler equations (LEE), but is limited to real-valued frequency independent boundary conditions and predominantly staircase-like boundary shapes. A hybrid modeling approach was recently presented to solve the LEE, coupling Fourier-PSTD with the nodal discontinuous Galerkin (DG) time domain method. The hybrid approach allows the computation of complex geometries by using the benefits of the DG methodology at the boundaries while keeping Fourier-PSTD in the bulk of the domain. This paper presents the implementation of arbitrary boundary conditions in the novel methodology, for instance, frequency dependent boundaries. The paper includes an application case of sound propagation for an urban scenario.

KW - Boundary value problems

KW - Sound propagation

KW - Linear Euler equations

KW - Acoustic model

KW - Pseudospectral time-domain method

KW - Discontinuous Galerkin

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DO - 10.1121/1.4988418

M3 - Conference contribution

SN - 0001-4966

VL - 141

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BT - 173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum

PB - Acoustical Society of America

CY - Boston, Massachusetts

T2 - 173rd Meeting of the Acoustical Society of America and the 8th Forum Acusticum (Acoustics2017), 25-29 June 2017, Boston, USA

Y2 - 25 June 2017 through 29 June 2017

ER -

Hybrid Fourier pseudospectral/discontinuous Galerkin time-domain method for arbitrary boundary conditions

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Congres

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