Title: Influence of dynamic tortuosity and compressibility on the propagation of transient waves in porous media
Authors: Fellah, Zine El Abidine ×
Depollier, C
Fellah, M
Lauriks, Walter
Chapelon, JY #
Issue Date: Feb-2005
Publisher: Elsevier science bv
Series Title: Wave motion vol:41 issue:2 pages:145-161
Abstract: This paper provides an analytical solution in the time domain for the propagation of transient ultrasonic waves in a homogeneous, isotropic porous material with a rigid frame. The originality of this propagation equation is the use of the Pride et al. and Lafarge models, which give a better description of acoustic wave attenuation. Two parameters, p and p', are added to the description of losses in the porous material, given a modification of coefficients of the propagation equation in the time domain. The analytical solution to the wave equation has a different form as compared with that obtained from the Johnson-Allard model. This wave equation contains fractional derivative terms describing attenuation and dispersion in porous material. The Laplace transform method is used to solve the propagation equation. An experimental application to porous plastic foam is given to validate the mathematical solution to the propagation equation.
ISSN: 0165-2125
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter and Biophysics
× corresponding author
# (joint) last author

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science