Electrification of weakly conducting liquids in the neighborhood of a wall

The problem of the generation of an uncompensated electric space charge in weakly conducting viscous fluid channel flows in which the medium interacts electrochemically with an interface is investigated for an arbitrary relation between the mobilities of the charged particles of different kinds. New models of the electrochemical surface processes are considered. The effect of the parameters of these processes on the electrification current and on the time taken by the electric parameters of the medium is studied to reach saturation. The possibility of the generation of strong induced electric fields on the interface is justified theoretically, two basic parameters affecting the strength of these fields are determined, and an explanation of the discharge process observed in the experiments in the form of local fluid glow zones is proposed.