Microstructure, transport, and acoustic properties of open-cell foam samples: Experiments and three-dimensional numerical simulations

Abstract : This article explores the applicability of numerical homogenization techniques for analyzing transport properties in real foam samples, mostly open-cell, to understand long-wavelength acoustics of rigid-frame air-saturated porous media on the basis of microstructural parameters. Experimental characterization of porosity and permeability of real foam samples are used to provide the scaling of a polyhedral unit-cell. The Stokes, Laplace, and diffusion-controlled reaction equations are numerically solved in such media by a finite element method in three-dimensions; an estimation of the materials' transport parameters is derived from these solution fields. The frequency-dependent visco-inertial and thermal response functions governing the long-wavelength acoustic wave propagation in rigid-frame porous materials are then determined from generic approximate but robust models and compared to standing wave tube measurements. With no adjustable constant, the predicted quantities were found to be in acceptable agreement with multi-scale experimental data and further analyzed in light of scanning electron micrograph observations and critical path considerations.
Complete list of metadatas

Cited literature [48 references]  Display  Hide  Download

https://hal-upec-upem.archives-ouvertes.fr/hal-00731446
Contributor : Camille Perrot <>
Submitted on : Saturday, September 15, 2012 - 6:28:38 PM
Last modification on : Wednesday, September 4, 2019 - 1:52:13 PM
Long-term archiving on : Sunday, December 16, 2012 - 2:20:15 AM

File

Perrot_2012.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Camille Perrot, F. Chevillotte, M. T. Hoang, Guy Bonnet, F.-X. Bécot, et al.. Microstructure, transport, and acoustic properties of open-cell foam samples: Experiments and three-dimensional numerical simulations. Journal of Applied Physics, American Institute of Physics, 2012, 111 (1), pp.014911. ⟨10.1063/1.3673523⟩. ⟨hal-00731446⟩

Share

Metrics

Record views

437

Files downloads

823