Hydrodynamic Studies of Bubble Effects on the IR‐Drops in a Vertical Rectangular Cell

The bubble effects on the resistivity of solution under various conditions of electrolysis was examined with a rectangular cell, in which hydrogen evolution took place from a stainless steel cathode in dilute caustic soda solution. The resistivity of electrolyte containing hydrogen bubbles was a function of the current density, the operating temperature, the flow rate of solution, and the geometry of channel. An experimental equation was obtained.