Microstructure-based numerical modeling of the solid-fluid coupling interaction in acoustic foams

K. Gao, J.A.W. van Dommelen, P. Göransson, M.G.D. Geers

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

In this paper, based on a representative volume element (RVE) and Slattery's averaging theorem, parameters of Biot's poroelastic equations for homogenous isotropic porous materials are obtained. According to Slattery's averaging theorem, the coupling terms, which describe the inertial effects and the viscous effects, are represented by an integral of the solid-fluid interaction force. This relation provides a new approach to obtain the parameters required in Biot's equations through a direct numerical simulation of the RVE. An example of a 2D RVE is given and simulations of sound propagation in an impedance tube with a foam are conducted using Biot's equations. It is shown that the numerical coupling mass obtained from this new approach behaves qualitatively the same as an associated phenomenological model.

Original languageEnglish
Title of host publicationPoromechanics V - Proceedings of the 5th Biot Conference on Poromechanics
Pages2123-2130
Number of pages8
DOIs
Publication statusPublished - 2013
Event5th Biot Conference on Poromechanics - Vienna, Austria
Duration: 10 Jul 201312 Jul 2013
Conference number: 5
http://biot2013.conf.tuwien.ac.at/

Conference

Conference5th Biot Conference on Poromechanics
Abbreviated titleBIOT 2013
CountryAustria
CityVienna
Period10/07/1312/07/13
Internet address

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