Noise propagation from a cutting of arbitrary cross-section and impedance
Peplow, A. T. LU
and Chandler-Wilde, S. N.
(1999)
In Journal of Sound and Vibration
223(3).
p.355-378
- Abstract
A boundary integral equation is described for the prediction of acoustic propagation from a monofrequency coherent line source in a cutting with impedance boundary conditions onto surrounding flat impedance ground. The problem is stated as a boundary value problem for the Helmholtz equation and is subsequently reformulated as a system of boundary integral equations via Green's theorem. It is shown that the integral equation formulation has a unique solution at all wavenumbers. The numerical solution of the coupled boundary integral equations by a simple boundary element method is then described. The convergence of the numerical scheme is demonstrated experimentally. Predictions of A-weighted excess attenuation for a traffic noise... (More)
A boundary integral equation is described for the prediction of acoustic propagation from a monofrequency coherent line source in a cutting with impedance boundary conditions onto surrounding flat impedance ground. The problem is stated as a boundary value problem for the Helmholtz equation and is subsequently reformulated as a system of boundary integral equations via Green's theorem. It is shown that the integral equation formulation has a unique solution at all wavenumbers. The numerical solution of the coupled boundary integral equations by a simple boundary element method is then described. The convergence of the numerical scheme is demonstrated experimentally. Predictions of A-weighted excess attenuation for a traffic noise spectrum are made illustrating the effects of varying the depth of the cutting and the absorbency of the surrounding ground surface.
(Less)
- author
- Peplow, A. T.
LU
and Chandler-Wilde, S. N.
- publishing date
- 1999-06-10
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Sound and Vibration
- volume
- 223
- issue
- 3
- pages
- 24 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:0007294296
- ISSN
- 0022-460X
- DOI
- 10.1006/jsvi.1999.2126
- language
- English
- LU publication?
- no
- additional info
- Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
- id
- b1c6ecc2-7a7d-42b5-8447-46f3bb698523
- date added to LUP
- 2021-03-08 15:21:43
- date last changed
- 2022-02-01 20:36:57
@article{b1c6ecc2-7a7d-42b5-8447-46f3bb698523,
abstract = {{<p>A boundary integral equation is described for the prediction of acoustic propagation from a monofrequency coherent line source in a cutting with impedance boundary conditions onto surrounding flat impedance ground. The problem is stated as a boundary value problem for the Helmholtz equation and is subsequently reformulated as a system of boundary integral equations via Green's theorem. It is shown that the integral equation formulation has a unique solution at all wavenumbers. The numerical solution of the coupled boundary integral equations by a simple boundary element method is then described. The convergence of the numerical scheme is demonstrated experimentally. Predictions of A-weighted excess attenuation for a traffic noise spectrum are made illustrating the effects of varying the depth of the cutting and the absorbency of the surrounding ground surface.</p>}},
author = {{Peplow, A. T. and Chandler-Wilde, S. N.}},
issn = {{0022-460X}},
language = {{eng}},
month = {{06}},
number = {{3}},
pages = {{355--378}},
publisher = {{Elsevier}},
series = {{Journal of Sound and Vibration}},
title = {{Noise propagation from a cutting of arbitrary cross-section and impedance}},
url = {{http://dx.doi.org/10.1006/jsvi.1999.2126}},
doi = {{10.1006/jsvi.1999.2126}},
volume = {{223}},
year = {{1999}},
}