Abstract
When PEFC is operated at high power, a drop of water is appeared in the channel and the gas diffusion layer. And the gas supply is blocked, and then the cell voltage decreaces and becames unstable. So we are developing a PEFC numerical code considering gas-liquid two-phase flow to elucidate the problem of water. In the numerical model, the water vapor is condensed when the vapor perssure exceeds its saturation vapor pressure. In this report, we show the outline of the code and an example of the saturation distribution in cathode.
