Pore-network modeling of isothermal drying in porous media

In this paper we present numerical results obtained with a pore-network model for the drying of porous media that accounts for various processes at the pore scale. These include mass transfer by advection and diffusion in the gas phase, viscous flow in the liquid and gas phases and capillary effects...

Full description

Saved in:
Bibliographic Details
Published in:Transport in porous media 2005, Vol.58 (1-2), p.63-86
Main Authors: YIOTIS, A. G, STUBOS, A. K, BOUDOUVIS, A. G, TSIMPANOGIANNIS, I. N, YORTSOS, Y. C
Format: Article
Language:English
Subjects:
Capillarity
Drying
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Hydrocarbons
Hydrogeology
Hydrology. Hydrogeology
Mass transfer
Mathematical models
Phase distribution
Pollution, environment geology
Porous materials
Porous media
Sedimentary rocks
Vapor phases
Viscous flow
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper we present numerical results obtained with a pore-network model for the drying of porous media that accounts for various processes at the pore scale. These include mass transfer by advection and diffusion in the gas phase, viscous flow in the liquid and gas phases and capillary effects at the liquid--gas interface. We extend our work by studying the effect of capillarity-induced flow in macroscopic liquid films that form at the pore walls as the liquid--gas interface recedes. A mathematical model that accounts for the effect of films on the drying rates and phase distribution patterns is presented. It is shown that film flow is a major transport mechanism in the drying of porous materials, its effect being dominant when capillarity controls the process, which is the case in typical applications.
ISSN:0169-3913
1573-1634
DOI:10.1007/s11242-004-5470-8