Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17015
Title: Numerical simulation of the transient heat and liquid moisture transfer through porous textiles with consideration of electric double layer
Authors: Zhu, QY
Li, Y 
Keywords: Electric double layer (EDL)
Electric resistance number
Electroviscous effect
Porous textiles
Issue Date: 2010
Publisher: Pergamon Press
Source: International journal of heat and mass transfer, 2010, v. 53, no. 7-8, p. 1417-1425 How to cite?
Journal: International journal of heat and mass transfer 
Abstract: The liquid water transport coupled with moisture and heat transfer through porous textiles is a complicated process involving simultaneous, coupled heat and mass transfers. The flows in porous textiles are different from the traditional flows transfer in porous media due to the adsorption of moisture by fibers. Based on the Poisson-Boltzmann equation for electric double layers and Navier-Stokes equation for liquid flows, a mathematical model for describing resistance effects of electric double layer (EDL) on the coupled heat and liquid moisture transfer in porous textiles is developed. The resistance effect of the EDL in porous textiles can be measured by a dimensionless number, which is called electric resistance number. It is proportional to the square of the liquid dielectric constant, the solid surface zeta potential and inversely proportional to the liquid dynamic viscosity, electric conductivity and the square of the effective pore size. With specification of initial and boundary conditions, the distributions of the temperature, moisture concentration, and liquid water content in porous textiles have been obtained. The theoretical predictions are compared with experimental data, and good agreement is observed between the two, indicating that the heat and mass transfer process are influenced by the EDL in porous textiles.
URI: http://hdl.handle.net/10397/17015
ISSN: 0017-9310
EISSN: 1879-2189
DOI: 10.1016/j.ijheatmasstransfer.2009.12.014
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