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Title: Effect of Gas Diffusion Layer Surface Wettability Gradient on Water Behavior in a Serpentine Gas Flow Channel of Proton Exchange Membrane Fuel Cell
Authors: Malhotra S.
Ghosh, Sumana
Published in: Journal of Fluids Engineering, Transactions of the ASME
Abstract: Water removal and behavior, in proton exchange membrane fuel cell (PEMFC) gas flow channel has been investigated in this work. Single serpentine gas flow channel has been simulated. Hydrodynamics of water drops in a serpentine channel are studied as a function of nature of gas diffusion layer (GDL) surface wettability. In one case, the surface becomes gradually hydrophobic starting from 90 deg to 170 deg. In this second case, the value of contact angle reduces to 10 deg. A three-dimensional model has been developed by using CFD software. Two different drop of diameter 0.2mm and 0.4mm are simulated for all the cases. It is observed that, water coverage is always lesser for a gradual hydrophobic surface. Also at low air velocity and gradual hydrophobic GDL surface results in lesser pressure drop as well as water coverage. Copyright © 2018 by ASME.
Citation: Journal of Fluids Engineering, Transactions of the ASME, 140(8)
Issue Date: 2018
Publisher: American Society of Mechanical Engineers (ASME)
Keywords: CFD
contact angle
droplet translation
proton exchange fuel cell
wettability gradient
ISSN: 982202
Author Scopus IDs: 15035763600
Author Affiliations: Malhotra, S., Department of Chemical Engineering, IIT Roorkee, Roorkee, 247667, India
Ghosh, S., Department of Chemical Engineering, IIT Roorkee, Roorkee, 247667, India
Funding Details: The Young Scientist Scheme of Science and Engineering Research Board, India (Grant No. SB/FTP/ETA-0156/2014). Science and Engineering Research Board, SERB: SB/FTP/ETA-0156/2014
Corresponding Author: Ghosh, S.; Department of Chemical Engineering, India; email:
Appears in Collections:Journal Publications [CH]

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