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Liquid permeability of an anisotropic fiber web
Chalmers University of Technology, Department of Applied Mechanics.
School of Textiles, University College of Borås.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
2005 (English)In: Textile research journal, ISSN 0040-5175, E-ISSN 1746-7748, Vol. 75, no 4, p. 304-311Article in journal (Refereed) Published
Abstract [en]

The Darcian permeability of a dense network of fibers with general orientation is examined experimentally and analytically. The permeability of a carded PA6 fiber web is measured in the three principal directions using a saturated parallel flow technique. A model is introduced that generalizes existing theories for unidirectional fiber arrays to fiber networks of general orientation distribution. The average drag on a given fiber is assumed to be independent of the overall fiber orientation distribution. A second-order orientation tensor describes the orientation dependence. Our generalization applied to the models of Gebart predicts reasonably well the in-plane permeability, but overestimates the out-of-plane permeability by a factor of four.

Place, publisher, year, edition, pages
2005. Vol. 75, no 4, p. 304-311
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-3001DOI: 10.1177/0040517505054736ISI: 000232607400005Scopus ID: 2-s2.0-24944570004Local ID: 0c047590-a26f-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-3001DiVA, id: diva2:975856
Note
Validerad; 2005; 20070110 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Lundström, Staffan

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