Abstract
Computational fluid dynamics (CFD) simulations were conducted to study the liquid water transport behaviors in flow channels of polymer electrolyte membrane fuel cells (PEMFCs). The effects of geometries and surface properties of flow channels on the liquid water exhaust capabilities were quantitatively analyzed based on the exhaust time and stagnant volume data obtained by the CFD simulations. Two different liquid morphologies were found to develop during the two-phase (water/air) transport in flow channels: liquid film morphology for hydrophobic channels and droplet morphology for hydrophilic channels. It was also observed that hydrophobic channels exhausted liquid water much faster than hydrophilic channels, but the stagnant liquid volume in corners of hydrophobic channels was larger than that of hydrophilic channels. The exhaust capability results determined by the quantitative analysis were explained by referring to the different morphologies of liquid water in flow channels.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
