Description
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.Period | 26 Aug 2024 |
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Event title | 53rd International Congress & Exposition on Noise Control Engineering: INTER-NOISE 2024 |
Event type | Conference |
Location | Nantes, FranceShow on map |
Degree of Recognition | International |
Related content
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Publications
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Comparing outdoor sound propagation simulation methods based on geometrical and numerical methods
Research output: Chapter in Book/Report/Conference proceeding › Conference paper
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Activities
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53rd International Congress & Exposition on Noise Control Engineering
Activity: Participation in or organisation of › Conference or symposium (Participation in/Organisation of)