Two-Scale Modeling Approach to Predict Permeability of Fibrous Media

We previously demonstrated how one can develop a 3-D geometry to model the fibrous microstructure of a nonwoven fiberweb and use it to simulate its permeability at fiber level [1-6]. Developing 3-D models of most nonwoven fabrics (bonded fiberwebs), however, is cumbersome, as in the case of hydroent...

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Main Authors: Sudhakar Jaganathan, Behnam Pourdeyhimi, Ph.D., Hooman V. Tafreshi, Ph.D.
Format: Article
Language:English
Published: SAGE Publishing 2008-06-01
Series:Journal of Engineered Fibers and Fabrics
Online Access:http://www.jeffjournal.org/papers/Volume3/Jaganathan.pdf
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spelling doaj-835c0b8910fc43e0a5089560ca7e3cca2020-11-25T03:24:25ZengSAGE PublishingJournal of Engineered Fibers and Fabrics1558-92502008-06-0132-Filtration1318Two-Scale Modeling Approach to Predict Permeability of Fibrous MediaSudhakar JaganathanBehnam Pourdeyhimi, Ph.D.Hooman V. Tafreshi, Ph.D.We previously demonstrated how one can develop a 3-D geometry to model the fibrous microstructure of a nonwoven fiberweb and use it to simulate its permeability at fiber level [1-6]. Developing 3-D models of most nonwoven fabrics (bonded fiberwebs), however, is cumbersome, as in the case of hydroentangled fabrics, for instance. In such cases, microscopic techniques are often used to generate 3-D images of the media’s microstructures. Nevertheless, whether the microstructure is modeled or obtained from 3-D imaging, extensive computational resources are required to use them in fluid flow simulations [7]. To circumvent this problem, a two-scale modeling approach is proposed here that allows us to simulate the entire thickness of a commercial fabric/filter on a personal computer. In particular, the microscale permeability of a hydroentangled nonwoven is computed using 3-D reconstructed microstructures obtained from Digital Volumetric Imaging (DVI). The resulting microstructural permeability tensors are then used in a macroscale porous model to simulate the flow through the material’s thickness and the calculation of its overall permeability.http://www.jeffjournal.org/papers/Volume3/Jaganathan.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Sudhakar Jaganathan
Behnam Pourdeyhimi, Ph.D.
Hooman V. Tafreshi, Ph.D.
spellingShingle Sudhakar Jaganathan
Behnam Pourdeyhimi, Ph.D.
Hooman V. Tafreshi, Ph.D.
Two-Scale Modeling Approach to Predict Permeability of Fibrous Media
Journal of Engineered Fibers and Fabrics
author_facet Sudhakar Jaganathan
Behnam Pourdeyhimi, Ph.D.
Hooman V. Tafreshi, Ph.D.
author_sort Sudhakar Jaganathan
title Two-Scale Modeling Approach to Predict Permeability of Fibrous Media
title_short Two-Scale Modeling Approach to Predict Permeability of Fibrous Media
title_full Two-Scale Modeling Approach to Predict Permeability of Fibrous Media
title_fullStr Two-Scale Modeling Approach to Predict Permeability of Fibrous Media
title_full_unstemmed Two-Scale Modeling Approach to Predict Permeability of Fibrous Media
title_sort two-scale modeling approach to predict permeability of fibrous media
publisher SAGE Publishing
series Journal of Engineered Fibers and Fabrics
issn 1558-9250
publishDate 2008-06-01
description We previously demonstrated how one can develop a 3-D geometry to model the fibrous microstructure of a nonwoven fiberweb and use it to simulate its permeability at fiber level [1-6]. Developing 3-D models of most nonwoven fabrics (bonded fiberwebs), however, is cumbersome, as in the case of hydroentangled fabrics, for instance. In such cases, microscopic techniques are often used to generate 3-D images of the media’s microstructures. Nevertheless, whether the microstructure is modeled or obtained from 3-D imaging, extensive computational resources are required to use them in fluid flow simulations [7]. To circumvent this problem, a two-scale modeling approach is proposed here that allows us to simulate the entire thickness of a commercial fabric/filter on a personal computer. In particular, the microscale permeability of a hydroentangled nonwoven is computed using 3-D reconstructed microstructures obtained from Digital Volumetric Imaging (DVI). The resulting microstructural permeability tensors are then used in a macroscale porous model to simulate the flow through the material’s thickness and the calculation of its overall permeability.
url http://www.jeffjournal.org/papers/Volume3/Jaganathan.pdf
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