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AuthorsA. Koponen, B.D. Kandhai, E. Hellen, M. Alava, A.G. Hoekstra, M. Kataja, K. Niskanen, P.M.A. Sloot, J. Timonen
TitlePermeability of three-dimensional random fibre webs
JournalPhysical Review Letters
FacultyFaculty of Science
Institute/dept.FNWI: Informatics Institute (II)
Keywordscreeping flow; permeability; fibres; porosity; porous materials
AbstractWe report the results of essentially ab initio simulations of creeping flow through large three-dimensional random fiber webs that closely resemble fibrous sheets such as paper and nonwoven fabrics. The computational scheme used in this Letter is that of the lattice-Boltzmann method and contains no free parameters concerning the properties of the porous medium or the dynamics of the flow. The computed permeability of the web is found to be in good agreement with experimental data, and confirms that permeability depends exponentially on porosity over a large range of porosity.
Document typeArticle
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