Gas-Liquid Phenomena With Dynamic Contact Angles In The Cathode Of A Parallel Proton Exchange Membrane Fuel Cell

Among the numerical studies on liquid water transport in Proton Exchange Membrane Fuel Cells (PEMFCs), the static contact angle (SCA) model is generally used, while the dynamic contact angle (DCA) model is only applied on the simulation of droplet behaviors with simple geometries like a single microchannel. In this study, the DCA model is employed to study the gas-liquid phenomena inside the cathode of PEMFC with parallel flow field design, i.e., Parallel-DCA model. The water emerging and transport processes are simulated based on this Parallel-DCA model using the volume of fluid (VOF) method. The numerical results are also compared to those from the Parallel-SCA model with the same computational domain and operating conditions.