The purpose of this dissertation is the study, the analysis and the modeling of a Proton Exchange Membrane fuel cell (PEMFC). This type of fuel cell has been chosen because it is the most promising candidate for replacing the internal combustion engine in automobiles, for lower power CHP systems, and for replacing batteries in portable and micro applications.
Specifically, there is a need to investigate the most important factors that influence the fuel cell's performance using a 3D Computational Fluid Dynamics (CFD) analysis, taking into account simultaneous multi-component, multi-phase, multi-dimensional fluid flow with heat and mass transfer as well as and electrochemical reactions.
The first aim of this investigation is to select an appropriate geometry of a PEM fuel cell accompanied with experimental results, simulate the chosen geometry and produce similar results using the commercial CFD software FLUENT in order to validate the simulation procedure.
Finally, the parametric studies are applied which help to discover new behaviors in order to optimize the performance of the fuel cell.