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Prediction of the sound pressure levels using a diffusion model: numerical validations and experimental comparisons
Billon, Alexis; Picaut, Judicaël
2008In Journal of the Acoustical Society of America, 123 (5), p. 3924-3924
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Keywords :
Acoustics; Urban Acoustics; Diffusion model
Abstract :
[en] redictions of sound propagation in urban areas have attracted a considerable over the years. If the sound energy is assimilated to particles with a constant energy, their movement can be described by a transport equation. In canyon streets, this transport equation can be reduced to a diffusion equation whose expression is more simple. In this presentation, sound absorption at the boundaries (buildings facades and ground), as well as atmospheric sound attenuation are introduced. The problem is then solved numerically using a finite elements method for the configuration of a canyon street. A systematic validation of the obtained model is carried out in terms of sound pressure level by comparison to numerical simulations taken from the literature. Comparisons with experimental data are then conducted. Finally, applications in more complex configurations are presented.
Disciplines :
Mechanical engineering
Author, co-author :
Billon, Alexis ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electroacoustique, acoustique appliquée et éclairage
Picaut, Judicaël
Language :
English
Title :
Prediction of the sound pressure levels using a diffusion model: numerical validations and experimental comparisons
Publication date :
2008
Event name :
Acoustic'08
Event organizer :
EAA et ASA
Event place :
Paris, France
Event date :
juin 2008
Audience :
International
Journal title :
Journal of the Acoustical Society of America
ISSN :
0001-4966
eISSN :
1520-8524
Publisher :
American Institute of Physics, Melville, United States - New York
Volume :
123
Issue :
5
Pages :
3924-3924
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie [FR]
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since 19 February 2010

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