The default Porosity εp of the solid matrix is taken
From material. The Porous Matrix node supports the use of a
Porous Material node, where the porosity is defined in the manner of
where θs,i and
θimf,i are the volume fractions given in
Solid and
Immobile Fluids subnodes under the
Porous Material node.
For User defined, enter a value or expression for the porosity.
In a Porous Catalyst, the dry bulk density
ρ of the porous medium is needed. This is used to compute mass phase transfer due to adsorption or desorption.
Select Dry bulk density when this quantity is known. Or select
Solid phase density to instead compute the dry bulk density from the solid phase one. In both cases the density definition can be taken
From material or
User-defined.
