Two-phase Flow Dynamics at the Interface Between GDL and Gas Distributor Channel Using a Pore-Network Model

Abstract For improved operating conditions of a polymer electrolyte membrane (PEM) fuel cell, sophisticated water management is crucial. Therefore, it necessary to understand the transport mechanisms throughout cell constituents especially on cathode side, where excess has be removed. Pore-scale modeling diffusion layers and gas distributor been established as favorable technique investigate ongoing processes. Investigating interface between layers, particular challenge combination interaction multi-phase flow in porous material layer (GDL) with free channels. The formation, growth detachment droplets hydrophobic, surface GDL have major influence mass, momentum energy exchange layers. A dynamic pore-network model used describe through pore-scale. To capture droplet occurrence its flow, this two-phase extended formation at well due In article, developed applied single- multi-tube systems general drop behavior. These rather simple test-cases are compared experimental numerical data available literature. Finally, unit analyze channel.