Uniform radiation conditions for a sound propagation model
(2009) In Journal of Computational Acoustics 17(2). p.135-157- Abstract
In this work, a new set of uniform radiation boundary conditions for a half-space model are derived and applied to a fundamental problem in outdoor sound propagation. This original approach derived here relies upon a high-order family of local radiation boundary conditions related to plane wave reflection coefficients. Validity of the approximation is carried out by examining sound propagation above an impedance ground using a spectral finite element method. This is followed by computational results verified against an analytic solution for sound propagation over hard ground. Finally, the case of sound propagation above a grass-strip surrounded by rigid ground and a rigid-strip in a grassland environment with atmospheric profiles are... (More)
In this work, a new set of uniform radiation boundary conditions for a half-space model are derived and applied to a fundamental problem in outdoor sound propagation. This original approach derived here relies upon a high-order family of local radiation boundary conditions related to plane wave reflection coefficients. Validity of the approximation is carried out by examining sound propagation above an impedance ground using a spectral finite element method. This is followed by computational results verified against an analytic solution for sound propagation over hard ground. Finally, the case of sound propagation above a grass-strip surrounded by rigid ground and a rigid-strip in a grassland environment with atmospheric profiles are studied.
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- author
- Peplow, A. T. LU and Finnveden, S.
- publishing date
- 2009-06
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Boundary conditions, Finite element method, Nonreflecting, Sound propagation
- in
- Journal of Computational Acoustics
- volume
- 17
- issue
- 2
- pages
- 23 pages
- publisher
- World Scientific Publishing
- external identifiers
-
- scopus:67650488630
- ISSN
- 0218-396X
- DOI
- 10.1142/S0218396X09003896
- language
- English
- LU publication?
- no
- id
- b35edd4b-3fff-4f32-9009-62e6ae6caa73
- date added to LUP
- 2021-02-04 09:56:10
- date last changed
- 2022-02-01 20:00:08
@article{b35edd4b-3fff-4f32-9009-62e6ae6caa73, abstract = {{<p>In this work, a new set of uniform radiation boundary conditions for a half-space model are derived and applied to a fundamental problem in outdoor sound propagation. This original approach derived here relies upon a high-order family of local radiation boundary conditions related to plane wave reflection coefficients. Validity of the approximation is carried out by examining sound propagation above an impedance ground using a spectral finite element method. This is followed by computational results verified against an analytic solution for sound propagation over hard ground. Finally, the case of sound propagation above a grass-strip surrounded by rigid ground and a rigid-strip in a grassland environment with atmospheric profiles are studied.</p>}}, author = {{Peplow, A. T. and Finnveden, S.}}, issn = {{0218-396X}}, keywords = {{Boundary conditions; Finite element method; Nonreflecting; Sound propagation}}, language = {{eng}}, number = {{2}}, pages = {{135--157}}, publisher = {{World Scientific Publishing}}, series = {{Journal of Computational Acoustics}}, title = {{Uniform radiation conditions for a sound propagation model}}, url = {{http://dx.doi.org/10.1142/S0218396X09003896}}, doi = {{10.1142/S0218396X09003896}}, volume = {{17}}, year = {{2009}}, }