CFD analysis of PEMFC flow channel cross sections
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2017
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Fuel Cells
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This paper presents a study of single-channel proton
exchange membrane fuel cells (PEMFCs) using computational
modeling and simulation. For this analysis, the commercial
software COMSOL Multiphysics was used to build a
single-phase isothermal and tridimensional fuel cell model.
For the mathematical description of the catalyst layer, the
flooded agglomerate model was implemented, and it proved
to be more accurate than Butler-Volmer model, which is the
pre-built model in the software. Such evidence was verified
when comparing the polarization curves obtained using both
models with an experimental curve. After definition of the
model, the main objective of this study was to analyze the
influence of the flow channel cross-section in the water distribution
inside the cell, studying rectangular, trapezoidal and
hybrid stepped geometries. The fuel cell with stepped channel
was equivalent to the trapezoidal cell in all aspects analyzed,
and both provided superior water management than
the rectangular cell. However, the current generation in the
rectangular design was slightly higher. It was noted that the
simulation of a tridimensional model provided a better
understanding of the regions where higher concentrations of
water can occur, and that different flow channel designs can
be used to enhance water management.
Como referenciar
PAULINO, A.L.R.; CUNHA, E.F.; ROBALINHO, E.; LINARDI, M.; KORKISCHKO, I.; SANTIAGO, E.I. CFD analysis of PEMFC flow channel cross sections. Fuel Cells, v. 17, n. 1, p. 27-36, 2017. DOI: 10.1002/fuce.201600141. Disponível em: http://repositorio.ipen.br/handle/123456789/27844. Acesso em: 11 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.