Prof. Dr. S. Majid Hassanizadeh from Utrecht University will give a short course for doctoral students on "Capillarity in porous media at different scales":
Date: October 7 to 11, 2019.
Place: University of Stuttgart, Pfaffenwaldring 61, Room U1.003 (MML)
The short course is jointly organized by IRTG DROPIT and SFB 1313. All members and associated international members of SFB 1313 and DROPIT are kindly invited to attend the short course. The course is free of charge. Possible costs for accommodation or travel expenses cannot be reimbursed.
About the short course
In this short course, a systematic approach is taken to the understanding of capillarity in porous media at different scales. Current definitions of capillary pressure, which are mostly empirical in nature are revisited and it is shown that they are special cases of a more general theory of capillarity.
First, capillary pressure is defined at pore scale based on the equation of momentum conservation for a fluid-fluid interface. It is shown that, even at microscale, capillary pressure is equal to the difference in pressures of the two fluids only under static conditions. General equations for dynamic or non- equilibrium conditions are derived. Then, capillary pressure at the macroscale (Darcy scale) is introduced based on principle of thermodynamics, and its relationship to fluid pressures under static and dynamic conditions is explored. Non-equilibrium capillarity theory and its effects on the modelling of moisture transport and two-phase flow processes are discussed. Computational and experimental studies are presented that investigate new generalized equations in variety of systems, such water infiltration into dry soil, penetration of liquids into absorbing hygienic tissues, moisture transport in fuel cells.