期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 60, 期 -, 页码 375-379出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2013.01.025
关键词
Filtration; Non-Newtonian fluids; Transport processes; Porous media; Fibrous media; Nonwoven materials
资金
- VCU Presidential Research Incentive Program (PRIP)
- VCU Graduate School for a PhD Thesis Scholarship
- National Science Foundation CMMI program [1029924]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1029924] Funding Source: National Science Foundation
In this note, for the first time, the flow of power-law fluids is numerically simulated in 3-D fibrous structures resembling the internal microstructure of fibrous hygiene products to study the effects of fibers' in-plane and through-plane orientations on the media's permeability. It was found that while the permeability of a fibrous material to a power-law fluid hardly depends on the in-plane orientation of the fibers, it increases with increasing the fibers' through-plane orientation. Moreover, we developed a simple analytical expression that can be used together with the empirical correlation of Davies (1973) [161], modified with an equation derived by Banks (1987) [17], to predict the permeability of anisotropic fibrous media to power-law non-Newtonian fluids. The predictions of our formulation are compared with our numerical simulations and good agreement is observed. (C) 2013 Elsevier Ltd. All rights reserved.
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