Flow, heat conductivity, and gas
diffusion in partly saturated
microstructures

The calculation of effective material properties of porous media
based on the underlying 3D geometry had been established over the 
last years. In this context, the prediction of the pereability
based on the pore geometry only is a very common example.
For many industrial applications such as dewatering of paper, the 
porous media is partly saturated with significant changes of its
properties such as the permeability, the gas diffusion, or the heat
conductivity.
Here, we present a new approach to predict these relative material
properties based on its 3D pore space only which is a challange up
to now. Our method includes a drainage simulation based on morpho-
logical operations and the solution of appropriate PDEs. We 
demonstrate the capability of our approach for a prediction of 
relative material parameters of a carbon paper used as a diffusion
media in a fuel cell.