Microstructure-based numerical modeling of the solid-fluid coupling interaction in acoustic foams
2013 (English)In: Poromechanics V - Proceedings of the 5th Biot Conference on Poromechanics, 2013, 2123-2130 p.Conference paper (Refereed)
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.
Place, publisher, year, edition, pages
2013. 2123-2130 p.
IdentifiersURN: urn:nbn:se:kth:diva-136771ScopusID: 2-s2.0-84887392957OAI: oai:DiVA.org:kth-136771DiVA: diva2:677078
5th Biot Conference on Poromechanics,July 10-12 2013, Vienna/Austria
QC 201401022013-12-092013-12-092014-01-02Bibliographically approved