Transient and turbulent mass transfer in rotating shallow electrochemical cells

Turbulent mass transfer in a rotating shallow electrochemical cell was inve stigated experimentally. Six local miniprobes embedded in the cathode were used to measure the local mass transfer rate and to detect unsteady turbule nt convection. The mass transfer rates were nondimensionalized and correlat ed. A critical parameter was obtained to describe the onset of transient an d turbulent conditions in the rotating electrochemical cells. The transient and turbulent phenomena in the rotating system are more complex than natur al convection in vertical enclosures because of gravity-gradient effects.