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 porosities of the
Solid and
Immobile Fluids subnodes under the
Porous Material node.
Select From pellet bed densities to compute the porosity using the (dry bulk)
Bed density ρb and the (single phase)
Pellet density ρpe. The porosity is then defined from
For User defined, enter a value or expression for the porosity.
