Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23481
Title: Transverse permeability determination of dual-scale fibrous materials
Authors: Shou, D
Ye, L
Tang, Y
Fan, J
Ding, F 
Keywords: Analytical model
Dual-scale
Fibrous media
Permeability
Issue Date: 2013
Publisher: Pergamon Press
Source: International journal of heat and mass transfer, 2013, v. 58, no. 1-2, p. 532-539 How to cite?
Journal: International journal of heat and mass transfer 
Abstract: Transverse flow through aligned yarns with two length scales is theoretically studied. Darcy's law and Stokes equation are employed to describe flow behaviors inside the porous yarns and in the open channels between yarns, respectively. Beavers and Joseph's semi-empirical model and Brinkman's extension of Darcy's law are used to characterize the jump-velocity and continuum-stress boundary condition at the interface layer between the clear fluid and the porous yarn. The analytical model for predicting permeability is developed as a function of porosity, fiber radius, fiber cross-sectional shape, and fiber packing pattern, which would help improve the physical understandings of dual-scale flows in fibrous media. Additionally, a simple but effective semi-analytical model is provided for easy use. Permeability predictions calculated from our model agree fairly well with experimental and numerical results in literature.
URI: http://hdl.handle.net/10397/23481
ISSN: 0017-9310
EISSN: 1879-2189
DOI: 10.1016/j.ijheatmasstransfer.2012.11.017
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