Emission and propagation of sound waves in porous media with active inner heat sources

Abstract:

Wave propagation through porous media with active inner heat sources is investigated in this paper. Through the use of the two-scale asymptotic method of homogenisation, it is found that a macroscopic non-homogeneous wave equation describes the emission and propagation of sound waves in such active porous media. The upscaled model is verified numerically for the cases of single and double porosity media, and shows that the general properties of the effective parameters of the porous media are not altered by the inner heat sources. Instead, the inner heat sources contribute to the non-homogeneous term in the upscaled wave equation. This paper also explores the potential of using active inner heat sources in porous media for controlling incident sound waves in a practical scenario.

Año de publicación:

2022

Keywords:

Fuente:

scopus