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Effect of channel-to-channel cross-flow on local flooding in serpentine flow-fields
K. B.Shyam Prasad,
Published in
Volume: 180
Issue: 1
Pages: 227 - 231
Serpentine flow-fields have long been used in polymer electrolyte membrane (PEM) fuel cells for effective transportation of reactants from the flow-field to the reaction sites. It has been observed in the literature that localized flooding near the U-bend region of serpentine flow-fields occurs at high current densities. This has been attributed to the boundary layer separation and recirculation of flow in the U-bend. In the present study, it is established, using computational fluid dynamics (CFD) simulations, that this is due to lower channel-to-channel cross-flow in the electrodes between consecutive serpentine channels rather than to the flow-field in the gas distribution channels. © 2008 Elsevier B.V. All rights reserved.
About the journal
JournalJournal of Power Sources
Open AccessNo
Concepts (10)
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    Boundary layer flow
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    Channel flow
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    Computational fluid dynamics
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    Computer simulation
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    Proton exchange membrane fuel cells (pemfc)
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    Boundary layer separation
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    Serpentine channels
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    Flow fields