Abstract
In this paper two-dimensional (2D), two-phase numerical model is proposed to investigate the effect of water velocity in the channel on the two-phase flow regime in polymer electrolyte membrane (PEM) electrolyzer porous transport layer (PTL). To simulate the movement of gas-liquid interface finite element method has been used. The model includes a porous media as PTL and a water channel. The water and air is considered as incompressible. The results showed different water velocities although causing different paths of two-phase flow in the PTL have little effect on the type of two-phase flow regimes in the porous media. On the other hand, different water velocities cause different two-phase flows in the channel. For effective removal of airflow in the PTL, the range of water velocities in which the two-phase flow regime in the channel is a bubbly flow is recommended. Therefore, the minimum velocity is necessary for the bubbly flow in the channel.
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