Contribution
Wave Propagation through a Dense Cluster of Cylinders: Radiative Transfer and Equivalent Fluid Models
* Presenting author
Abstract:
Clusters of cylinders are a useful way to model the wave propagation through several natural and complex media: crowds of people, forests, arrays of scatterers, or various materials. This paper investigates the modelling of low frequency sound propagation through dense clusters, where the wavelength is much larger than both the cylinder diameter and spacing. The first approach uses the radiative transfer model to capture the multiple scattering effects within the cluster and examine the coherency of the signal. The second approach considers the cluster as a porous medium, modelled as an equivalent fluid with a log-normal pore size distribution. This approach allows to calculate the speed of sound and accounts for the visco-thermal effects.