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Numerical predictions of sound propagation from a cutting over a road-side noise barrier
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
2005 (English)In: Journal of Computational Acoustics, ISSN 0218-396X, Vol. 13, no 1, 145-162 p.Article in journal (Refereed) Published
Abstract [en]

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. The numerical solution of the coupled boundary integral equations by a simple boundary element method is then described. Predictions of A-weighted insertion losses for a traffic noise spectrum are made illustrating the effects of depth of the cutting and the profile of the associated noise barrier.

Place, publisher, year, edition, pages
2005. Vol. 13, no 1, 145-162 p.
Keyword [en]
boundary element method, sound propagation, noise barrier, cutting
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-36071DOI: 10.1142/S0218396X05002517ISI: 000229916800010Scopus ID: 2-s2.0-18644378661OAI: oai:DiVA.org:kth-36071DiVA: diva2:430337
Note
QC 20110708 International Congress of Theoretical and Computational Acoustics, Waikiki, HI, AUG 11-15, 2003Available from: 2011-07-08 Created: 2011-07-08 Last updated: 2017-12-11Bibliographically approved

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