Comparing outdoor sound propagation simulation methods based on geometrical and numerical methods

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

Conventional simulations of outdoor noise propagation often rely on geometrical acoustic methods
such as ray tracing or mirror sources. Especially for low frequencies, these methods deliver physically
implausible results due to their inherent approach not resolving the properties of the acoustic field.
In this contribution, the results of a conventional noise propagation simulation software based on
geometrical acoustics are compared to numerical results originating from solving the Helmholtz
equation with the Finite Element Method (FEM). A 2.6 km long cross-section through an alpine
valley with a railway line is considered as an exemple. In comparison with the FEM results, the
shortcomings of geometrical acoustic methods are demonstrated, which underline the need for
powerful and computationally efficient numerical approaches for outdoor noise propagation.
Originalspracheenglisch
TitelINTER-NOISE and NOISE-CON Congress and Conference Proceedings
Herausgeber (Verlag)INTERNATIONAL INSTITUTE OF NOISE CONTROL ENGINEERING
Seiten2719-2730
DOIs
PublikationsstatusVeröffentlicht - Aug. 2024
Veranstaltung53rd International Congress & Exposition on Noise Control Engineering: INTER-NOISE 2024 - Nantes, Frankreich
Dauer: 25 Aug. 202429 Aug. 2024

Konferenz

Konferenz53rd International Congress & Exposition on Noise Control Engineering
KurztitelInter-Noise 2024
Land/GebietFrankreich
OrtNantes
Zeitraum25/08/2429/08/24

Fingerprint

Untersuchen Sie die Forschungsthemen von „Comparing outdoor sound propagation simulation methods based on geometrical and numerical methods“. Zusammen bilden sie einen einzigartigen Fingerprint.

Dieses zitieren