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Title: A numerical study on the effects of gas channel wettability in PEM fuel cells
Authors: Alrahmani, Mosab
Chen, Rui
Ibrahim, Salah S.
Keywords: Wettability
Fuel cells
Gas diffusion layer
Polymer electrolyte fuel cells
Issue Date: 2012
Publisher: © Electrochemical Society
Citation: ALRAHMANI, M., CHEN, R. and IBRAHIM, S., 2012. A numerical study on the effects of gas channel wettability in PEM fuel cells. In: Vondrák, J., Novák, V. and Bača, P. (eds.). Proceedings of 2012 13th International Conference on Advanced Batteries, Accumulators and Fuel Cells (ABAF 13), Brno, Czech Republic, 26-30 August.
Abstract: The wettability of channel walls and gas diffusion layer has a great influence on the water management of fuel cells. In this paper, a numerical study has been carried out to examine the effect of the wall and gas diffusion layer wettability on gas channels. The investigation employed a three dimensional numerical simulation using the volume-of-fluid (VOF) method to simulate the air-water flow in a straight micro-channel representing a gas channel in a PEM fuel cell. Nine combinations of wall and GDL wettabilities were investigated. Different wettability combinations were found to give different water behaviour. For fixed wall wettability, the pattern of the analysed parameters was changing between uniform cyclic, random cyclic and continuous. In addition, it was found that changing the GDL wettability has a greater impact on the analysed parameter compared to changing the wall wettability.
Description: © The Electrochemical Society, Inc. 2014. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in: ECS Transactions, 2014, 48 (1), pp. 81-92.
Version: Accepted for publication
DOI: 10.1149/04801.0081ecst
URI: https://dspace.lboro.ac.uk/2134/15641
Publisher Link: http://dx.doi.org/10.1149/04801.0081ecst
ISBN: 9788021445703
ISSN: 1938-6737
Appears in Collections:Conference Papers and Contributions (Aeronautical and Automotive Engineering)

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