Thermoelectrical Regime of a Vertical Electrolyzer. Part 2:Numerical Modeling of Two-Phase Electrolyte Convection

摘要

The results of numerical modeling of two-phase electrolyte thermo- and hydrodynamics in theworking space of a separate electrolyzer cell with vertical electrode arrangement are presented. The problem issolved in a self-consistent formulation taking into account the electric current, Joule heat evolution, gas evolu-tion, gas and liquid flows, and electric conductivity of the disperse phase. Within the framework of the proposedtwo-liquid approach, near-wall bubbly flow is calculated using a model of expanding gas plume, which is basedon the introduction of an effective force acting upon the gas phase. The results of several variants of such cal-culations are compared. The numerical solution is also compared to approximate analytical solutions of theproblem. The results of this study can be used to calculate estimations of the electrical and thermal regimes ofvertical electrolyzers.