| Abstract
| - A gas-evolving electrochemical cell with natural convection due to buoyancy is modeled using ahydrodynamic two-phase mixture model. Physical parameters are taken from the chlorateprocess, where hydrogen is evolved at the cathode. Constitutive closure laws, based on empiricalrelations developed for sedimenting particles, give the motion of the monodisperse gas phaserelative to the mixture. Typical results display the effect of bubble size, channel width, andcurrent density on the buoyant flow rate of the electrolyte through the channel. Results fromthe numerical simulations are also compared to data measured by Boissonneau and Byrne ona cell with gas evolution on both the anode and the cathode. Qualitatively good agreement wasfound.
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