Species transport through a porous medium is affected both by properties of the fluid phase, and as well as properties of the solid matrix. These properties are defined in the Fluid and
Porous Matrix subnodes respectively. The Porous Medium node supports material properties using a
Porous Material node (described in the
COMSOL Multiphysics Reference Manual), where properties are defined per phase in a similar manner.
Add an Adsorption or a
Dispersion subfeature to the
Porous Medium to account for the corresponding transport mechanism.