Electrohydrodynamics in porous media

In this work we develop the volume averaged form of the frequency-dependent governing equations for electrohydrodynamics in a saturated porous medium. The concept of local electrical equilibrium is identified, and when this c ondition is valid we obtain a one-equation model describing the coupled tra nsport of momentum and electric charge. When local electrical equilibrium i s not valid, separate forms of Maxwell's equations must be developed for bo th the fluid and solid phases.