7.2.1. Geom.Porosity.Type
string Geom.geometry_name.Porosity.Type [no default]
This key specifies which method is to be used to assign porosity data to the named geometry, geometry_name. The only choice currently available is Constant which indicates that a constant is to be assigned to all grid cells within a geometry.
pfset Geom.background.Porosity.Type Constant