Abstract
A two dimensional network model is implemented to simulate the capillary-driven two-phase flow regime taking place inside a fuel cell. The fuel cell model is of the cathode and includes a catalyst layer, a gas diffusion media, and a single gas channel. Water generation is modeled as a source term proportional to the fuel cell current intensity. The pore size distribution is generated using a Weibull distribution functions. Six different porous transport layers models are considered. These models correspond to six different pore size distributions generated by varying the scale and shape parameters in the Weibull probability distribution function. A parametric study of the wetting properties of the gas diffusion media is also carried out considering five typical contact angle values for non-wetting surfaces. The average pressure at the water injection place, the non-dimensional water-air interface length and the non-dimensional wetted area are discussed for each simulation.
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