Isothermal Drying of Pore Networks: Influence of Friction for Different Pore Structures

Abstract

An existing network model for isothermal drying of capillary porous media is extended to account for viscosity in the liquid phase so that it is no longer restricted to structures with large pores. Modeling challenges and solution methods are presented in detail. The model is compared with a bundle of capillaries model of drying. Finally, simulation results for two-dimensional pore networks with mono-modal and bimodal pore structure are shown and discussed.

Keywords:

• Bundle of capillaries
• Capillary porous media
• Drying curves
• Phase distribution
• Pore size distribution
• Viscous effect