Abstract:The electrolyte circulations in monopolar cell and two-compartment bipolar cell with   submerged electrodes were described by a hydraulic model.  The influence of current density. electrode tilt，anode-cathode distance (ACD) and immersion depth of electrodes on the electrolyte circulation ve locities between electrodes had been studied. Results demonstrated that the flow rates in the two com-partments of bipolar cell were very different，which provided impartant information for the structure de-sign of bipolar cell.

Key words: aluminum electrolysis  hydraulic model   bipolar cell