Coupled mechanical stress and multi-dimensional CFD analysis for high temperature proton exchange membrane fuel cells (HT-PEMFCs)

Title
Coupled mechanical stress and multi-dimensional CFD analysis for high temperature proton exchange membrane fuel cells (HT-PEMFCs)
Authors
주현철
Keywords
Proton exchange membrane fuel cell Polybenzimidazole (PBI) Gas diffusion layer GDL compression GDL intrusion
Issue Date
2013
Publisher
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Series/Report no.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; vol.38 no.18 startpage 7715 endpage 7724
Abstract
We use a combined finite element method (FEM)/computational fluid dynamics (CFD) methodology to numerically investigate the effects of gas diffusion layer (GDL) compression/ intrusion on the performance of a phosphoric acid-doped polybenzimidazole (PBI) membrane-based high temperature proton exchange membrane fuel cell (HT-PEMFC). Three-dimensional (3-D) FEM simulations are conducted under various displacement clamping conditions to analyze cell deformation characteristics. Then, a multidimensional HT-PEMFC CFD model is applied to the deformed cell geometries to study transport and electrochemical processes during HT-PEMFC operations. Our numerical simulation results reveal that the maximum stresses in the deformed GDLs always occur near the edge of the ribs. The combined effects of GDL compression/intrusion considerably increase spatial non-uniformity in the species and current density distributions, and reduce cell performance.
URI
http://dx.doi.org/10.1016/j.ijhydene.2012.07.122
http://dspace.inha.ac.kr/handle/10505/31598
ISSN
0360-3199
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Journal Papers, Reports(기계공학 논문, 보고서)
Files in This Item:
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