Viscous effects in the frictional formalism of non-equilibrium thermodynamics

Abstract

A hydrodynamic interpretation of the frictional formalism of non-equilibrium thermodynamics indicates that viscous effects are inherent in the formalism, provided the component velocities are properly averaged. Under these circumstances transport processes in porous media can be treated without reference to the structure of the medium. The treatment can be applied to open pore structures as well as to dense gels, and takes into account both diffusive transport and viscous flow phenomena.