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Predicting the pass-by signature of vehicle sound sources including the influence of nearby built environment
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0002-7006-067X
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0003-0176-5358
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0003-4103-0129
2017 (English)In: Proceedings of Meetings on Acoustics, ISSN 1939-800X, Vol. 30, no 1, p. 1-11, article id 030010Article in journal (Refereed) Published
Abstract [en]

A numerical methodology is presented aimed at evaluating the sound field generated by acoustic sources from ground vehicles using monopoles moving in a simplified urban environment. The approach includes reflection and scattering on nearby building surfaces, differentiating it from standard pass-by test simulations, which are performed on an ideal track in a free-field. In the example shown in this study, the sound sources consist of a group of incoherent monopoles representing the flow sound from a NACA air inlet, which were identified using numerical beamforming in a previous study. Other sources such as the engine or the exhaust could also be included as long as they can be modelled with one or more monopoles. Propagation is computed using a method previously developed by the authors, based on a point-to-point moving source Green's function and a modified Kirchhoff integral under the Kirchhoff approximation to compute first-and second-order reflections on built surfaces. This methodology has the potential to be used by vehicle manufacturers to assess the acoustic impact of a particular vehicle design in urban operating conditions, or by urban planners to get local predictions of the sound levels caused by a single vehicle pass-by. 

Place, publisher, year, edition, pages
2017. Vol. 30, no 1, p. 1-11, article id 030010
National Category
Fluid Mechanics and Acoustics Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-199855DOI: 10.1121/2.0000633Scopus ID: 2-s2.0-85049433005OAI: oai:DiVA.org:kth-199855DiVA, id: diva2:1065636
Note

QC 20171113

Available from: 2017-01-16 Created: 2017-01-16 Last updated: 2018-10-16Bibliographically approved

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Pignier, NicolasO'Reilly, Ciarán J.Boij, Susann
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Aeronautical and Vehicle EngineeringVinnExcellence Center for ECO2 Vehicle designMarcus Wallenberg Laboratory MWL
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