Modeling gas-phase transport in polymer-electrolyte fuel cells
In this transaction, the equations and methodology for modeling convection and ordinary, Knudsen, and pressure diffusion of gases in a fuel-cell gas-diffusion layer are described. Some results examining the magnitudes of the various terms are also made. This derivation results in a self-consistent description of the various transport mechanisms and is robust for numerical solutions, especially for conditions involving different flow regimes or where the regime is not known a priori.
Weber, AZ., & Newman, J. (2005). Modeling gas-phase transport in polymer-electrolyte fuel cells. ECS Transactions, 1(16), 61-66. https://doi.org/10.1149/1.2214625