Applying the diffusion equation to urban scenarios: computational analysis of the diffusion coefficient

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Prediction of sound propagation is playing a key role in the planning and design process of urban areas and during the last decades different techniques have been developed for the computation of the sound fields in cities. Among them, the diffusion equation, based on the propagation of sound energy, is a simple and attractive tool for certain scenarios where the diffuse field is predominant, such as inner city environments. The diffusion equation is a well-known and efficient method to compute sound fields in rooms with a low amount of absorption. However, this method, which includes the diffusion coefficient describing the diffusivity of the energy propagation, requires further understanding for urban environments. In this work, the diffusion coefficient has been evaluated using wave-based numerical techniques for simplified two-dimensional urban scenarios. The parameter is computed spatially from the acoustic intensity and sound energy density fields in every direction for different geometries. This paper investigates the directional components of the diffusion coefficient.
Originele taal-2Engels
TitelProceedings of the ICA 2019 and EAA Euroregio
Subtitel23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019
Plaats van productieAachen
UitgeverijICA/EAA
Pagina's3756-3763
Aantal pagina's8
ISBN van elektronische versie978-3-939296-15-7
StatusGepubliceerd - 11 sep 2019
Evenement23rd International Congress on Acoustics - Aachen, Duitsland
Duur: 9 sep 201913 sep 2019

Congres

Congres23rd International Congress on Acoustics
LandDuitsland
StadAachen
Periode9/09/1913/09/19

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  • Citeer dit

    Pagán Muñoz , R., Navarro Ruiz, J. M., & Hornikx, M. (2019). Applying the diffusion equation to urban scenarios: computational analysis of the diffusion coefficient. In Proceedings of the ICA 2019 and EAA Euroregio: 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019 (blz. 3756-3763). ICA/EAA.