Multiscale multiphase simulations at the gas channel/gas diffusion layer interface inside polymer electrolyte fuel cells
(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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- author
- Andersson, M. LU ; Yu, J. LU ; Beale, S. ; Froning, D. and Lehnert, W.
- organization
- publishing date
- 2017
- 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}}, }