Performance Analysis of Polymer Electrolyte Membrane Water Electrolyzer Using OpenFOAM: Two-Phase Flow Regime, Electrochemical Model.

In this study, an electrochemical model was incorporated into a two-phase model using OpenFOAM (London, United Kingdom) to analyze the two-phase flow and electrochemical behaviors in a polymer electrolyte membrane water electrolyzer. The performances of serpentine and parallel designs are compared. The current density and overpotential distribution are analyzed, and the volume fractions of oxygen and hydrogen velocity are studied to verify their influence on the current density.