Numerical predictions of sound propagation from a cutting over a road-side noise barrier
2005 (English)In: Journal of Computational Acoustics, ISSN 0218-396X, Vol. 13, no 1, 145-162 p.Article in journal (Refereed) Published
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.
boundary element method, sound propagation, noise barrier, cutting
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-36071DOI: 10.1142/S0218396X05002517ISI: 000229916800010ScopusID: 2-s2.0-18644378661OAI: oai:DiVA.org:kth-36071DiVA: diva2:430337
QC 20110708 International Congress of Theoretical and Computational Acoustics, Waikiki, HI, AUG 11-15, 20032011-07-082011-07-082011-10-12Bibliographically approved