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Multiscale multiphase simulations at the gas channel/gas diffusion layer interface inside polymer electrolyte fuel cells

Andersson, M. LU ; Yu, J. LU ; Beale, S. ; Froning, D. and Lehnert, W. (2017) 7th European Fuel Cell Piero Lunghi Conference, EFC 2017 p.435-436
Abstract

A computational fluid dynamic model describing a straight channel, relevant for water removal inside a PEFC, is developed. A volume of fluid (VOF) approach is used to investigate the two-phase interface resolved flow behavior inside the gas channel including the gas diffusion layer (GDL) surface. The size and contact angle of the liquid inlet at the interface are calculated with the lattice Boltzmann approach. From our study, it is clear that the impact on the two-phase flow pattern for different hydrophobic/hydrophilic characteristics, i.e., contact angles, at the walls and at the GDL surface is significant, compared to a situation where the walls and the interface are neither hydrophobic nor hydrophilic, i.e., 90° contact angle at the... (More)

A computational fluid dynamic model describing a straight channel, relevant for water removal inside a PEFC, is developed. A volume of fluid (VOF) approach is used to investigate the two-phase interface resolved flow behavior inside the gas channel including the gas diffusion layer (GDL) surface. The size and contact angle of the liquid inlet at the interface are calculated with the lattice Boltzmann approach. From our study, it is clear that the impact on the two-phase flow pattern for different hydrophobic/hydrophilic characteristics, i.e., contact angles, at the walls and at the GDL surface is significant, compared to a situation where the walls and the interface are neither hydrophobic nor hydrophilic, i.e., 90° contact angle at the walls and also at the GDL surface. A location at the side of the channel gives corner flow with a convex surface shape, while a location of the GDL surface liquid inlet in the middle of the gas channel gives droplet formation, having hydrophilic walls and a hydrophobic GDL surface.

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Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
gas channel, gas diffusion layer, PEFC, volume of fluid
host publication
EFC 2017 - Proceedings of the 7th European Fuel Cell Piero Lunghi Conference
editor
Cigolotti, Viviana ; Barchiesi, Chiara and Chianella, Michela
pages
2 pages
publisher
ENEA
conference name
7th European Fuel Cell Piero Lunghi Conference, EFC 2017
conference location
Naples, Italy
conference dates
2017-12-12 - 2017-12-15
external identifiers
  • scopus:85173560910
ISBN
9788882863241
language
English
LU publication?
yes
additional info
Publisher Copyright: © EFC 2017 - Proceedings of the 7th European Fuel Cell Piero Lunghi Conference.
id
10b381a5-af8a-4e96-a410-611d42a3a84e
date added to LUP
2023-10-19 07:02:07
date last changed
2023-10-26 15:54:43
@inproceedings{10b381a5-af8a-4e96-a410-611d42a3a84e,
  abstract     = {{<p>A computational fluid dynamic model describing a straight channel, relevant for water removal inside a PEFC, is developed. A volume of fluid (VOF) approach is used to investigate the two-phase interface resolved flow behavior inside the gas channel including the gas diffusion layer (GDL) surface. The size and contact angle of the liquid inlet at the interface are calculated with the lattice Boltzmann approach. From our study, it is clear that the impact on the two-phase flow pattern for different hydrophobic/hydrophilic characteristics, i.e., contact angles, at the walls and at the GDL surface is significant, compared to a situation where the walls and the interface are neither hydrophobic nor hydrophilic, i.e., 90° contact angle at the walls and also at the GDL surface. A location at the side of the channel gives corner flow with a convex surface shape, while a location of the GDL surface liquid inlet in the middle of the gas channel gives droplet formation, having hydrophilic walls and a hydrophobic GDL surface.</p>}},
  author       = {{Andersson, M. and Yu, J. and Beale, S. and Froning, D. and Lehnert, W.}},
  booktitle    = {{EFC 2017 - Proceedings of the 7th European Fuel Cell Piero Lunghi Conference}},
  editor       = {{Cigolotti, Viviana and Barchiesi, Chiara and Chianella, Michela}},
  isbn         = {{9788882863241}},
  keywords     = {{gas channel; gas diffusion layer; PEFC; volume of fluid}},
  language     = {{eng}},
  pages        = {{435--436}},
  publisher    = {{ENEA}},
  title        = {{Multiscale multiphase simulations at the gas channel/gas diffusion layer interface inside polymer electrolyte fuel cells}},
  year         = {{2017}},
}