This title appears in the Scientific Report :
2019
Please use the identifier:
http://dx.doi.org/10.1016/j.ijhydene.2019.02.166 in citations.
Modeling of Droplet Detachment Using Dynamic Contact Angles in Polymer Electrolyte Fuel Cell Gas Channels
Modeling of Droplet Detachment Using Dynamic Contact Angles in Polymer Electrolyte Fuel Cell Gas Channels
Climate change, energy security and air pollution are all motivators for the further development of fuel cells. A volume of fluid approach was used to investigate the impact of dynamic contact angle boundary conditions (Kistler model), mainly at the gas diffusion layer surface but also at the channe...
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Personal Name(s): | Andersson, Martin (Corresponding author) |
---|---|
Vukcevic, V. / Zhang, Shidong / Qi, Y. / Jasak, H. / Beale, Steven / Lehnert, Werner | |
Contributing Institute: |
JARA - HPC; JARA-HPC Technoökonomische Systemanalyse; IEK-3 |
Published in: | International journal of hydrogen energy, 44 (2019) 21, S. 11088 - 11096 |
Imprint: |
New York, NY [u.a.]
Elsevier
2019
|
DOI: |
10.1016/j.ijhydene.2019.02.166 |
Document Type: |
Journal Article |
Research Program: |
Flexible Simulation of Fuel Cells with OpenFOAM Fuel Cells |
Publikationsportal JuSER |
Climate change, energy security and air pollution are all motivators for the further development of fuel cells. A volume of fluid approach was used to investigate the impact of dynamic contact angle boundary conditions (Kistler model), mainly at the gas diffusion layer surface but also at the channel wall, of a polymer electrolyte fuel cell gas channel. From this study, it is clear that a dynamic contact angle boundary condition, with advancing and receding contact angles, influences the droplet detachment characteristics, for example, the detachment time and droplet size. Implementing dynamic contact angle boundary conditions for a thin channel causes the droplet, after being reattached to the wall on the side opposite the GDL, to flow very slowly when attached to the wall, until it is merged with a second droplet and they exit the channel (but remain attached to the wall) fairly quickly. Similar phenomena are not observed while using a static contact angle. |