POROUS MEDIA EVALUATION USING FREQUENCY-DEPENDENT ELECTROKINETICS

摘要

Frequency-dependent electrokinetics offers a different approach to obtaining information about porous media. In this work, we examine the possibility of using frequency-dependent streaming potential (FDSP) and frequency-dependent electro-osmosis (FDE) to obtain information concerning porous media. The theoretical basis for this work is done using the simple geometry of a capillary because it allows for an easier interpretation of the underlying physics. Pride [1994] formulated a more generalized porous media case which has been shown to give equivalent results to the capillary case for streaming potentials [Reppert et al., 2001].