초록

The dynamic interaction of liquid droplets emerging from the gas diffusion layer surface is modeledto study the behavior of liquid water inside the gas channel of a polymer electrolyte membrane fuel cellwith the volume of fluid formulation(VOF). The surface contact angle of gas diffusion layer is varied as45, 90, and 140 degrees. The gas channel air inlet velocity is varied as 5, 10, and 15 m/s. The waterinlet velocity from micro pores is varied as 0.5, 1, and 2 m/s. As the contact angle increases, watercoverage ratio increases. As the air inlet velocity and the water inlet velocity increase, water dropletsmove faster toward the channel exit as evidenced from the water front location plots. In summary, thehydrophobic wall contact angle and higher air/water inlet velocities provide better water removalcharacteristics.

키워드

PEMFC(고분자 전해질 연료전지), Liquid droplet(액적), Gas channel(가스채널) Gas diffusion layer (기체확산층), Micro pore(미세구멍)

참고문헌(12)open

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