up by non-homogeneous porous cylindrical particles using four known boundary conditions,
such as Happel's, Kuwabara's, Kvashnin's, Mehta-Morse/Cunningham's. For different values
of flow parameters, the variations of the hydrodynamic permeability are presented
graphically and discussed. Some earlier results reported for the drag force and the
hydrodynamic permeability, have been verified.