NDLI: Effects of Roughness of Gas Diffusion Layer Surface on Liquid Water Transport in Micro Gas Channels of a Proton Exchange Membrane Fuel Cell

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Effects of Roughness of Gas Diffusion Layer Surface on Liquid Water Transport in Micro Gas Channels of a Proton Exchange Membrane Fuel Cell

Content Provider	Semantic Scholar
Author	Chen, Li Luan, Hui-Bao He, Ya-Ling Tao, Wen-Quan
Copyright Year	2012
Abstract	Effects of surface roughness of a gas diffusion layer (GDL) on liquid water transport in a micro gas channel (GC) of a proton exchange membrane fuel cell (PEMFC) are investigated by using the volume of fluid (VOF) method in the commercial CFD package, FLUENT 6.3.26. An array of cubic holes under the GDL surface is used to describe the GDL surface roughness. The simulation results show that a Cassie droplet is inclined to form on the hydrophobic rough GDL surface and the surface roughness greatly affects the transport of the droplet. Effects of GDL surface roughness on forces acting on the droplet are carefully studied, and it is found that GDL surface roughness reduces the retentive forces and increases the detaching forces. In addition, effects of GDL surface roughness on the time required for a droplet to be removed out of the GC, liquid water coverage area ratio on GDL surface, and pressure drop in the GC are explored. The removal time of the water droplet decreases as the GDL roughness increases. The ...
Starting Page	295
Ending Page	318
Page Count	24
File Format	PDF HTM / HTML
DOI	10.1080/10407782.2012.670586
Alternate Webpage(s)	http://nht.xjtu.edu.cn/paper/en/2012213.pdf
Alternate Webpage(s)	https://doi.org/10.1080/10407782.2012.670586
Volume Number	62
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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