Permeability of three-dimensional random fiber webs

• Main Authors: Koponen, A., Kandhai, D., Hellén, E., Alava, M., Hoekstra, Alfons G., Kataja, M., Niskanen, K., Sloot, Peter M. A., Timonen, J.
• Other Authors: School of Computer Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Computer science and engineering
• Online Access: https://hdl.handle.net/10356/84474; http://hdl.handle.net/10220/10194
• Institution: Nanyang Technological University

We 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.