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@ARTICLE{Froning:857772,
author = {Froning, Dieter and Yu, Junliang and Reimer, Uwe and
Lehnert, Werner},
title = {{S}tochastic {A}nalysis of the {G}as {F}low at the {G}as
{D}iffusion {L}ayer/{C}hannel {I}nterface of a
{H}igh-{T}emperature {P}olymer {E}lectrolyte {F}uel {C}ell},
journal = {Applied Sciences},
volume = {8},
number = {12},
issn = {2076-3417},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2018-06740},
pages = {2536 -},
year = {2018},
abstract = {Gas diffusion layers (GDLs) play a significant role in the
efficient operation of high-temperature polymer electrolyte
fuel cells. They connect the electrodes to the gas channels
of the bipolar plate by porous material with a meso-scale
geometric structure. The electrodes must be sufficiently
supplied by gases from the channels to operate fuel cells
efficiently. Furthermore, reaction products must be
transported in the other direction. The gas transport is
simulated in the through-plane direction of the GDL, and its
microstructure created by a stochastic model is equivalent
to the structure of real GDL material. Continuum approaches
in cell-scale simulations have model parameters for porous
regions that can be taken from effective properties
calculated from the meso-scale simulation results, as one
feature of multi-scale simulations. Another significant
issue in multi-scale simulations is the interface between
two regions. The focus is on the gas flow at the interface
between GDL and the gas channel, which is analyzed using
statistical methods. Quantitative relationships between
functionality and microstructure can be detected. With this
approach, virtual GDL materials can possibly be designed
with improved transport properties. The evaluation of the
surface flow with stochastic methods offers substantiated
benefits that are suitable for connecting the meso-scale to
larger spatial scales},
cin = {IEK-3 / JARA-HPC},
ddc = {600},
cid = {I:(DE-Juel1)IEK-3-20101013 / $I:(DE-82)080012_20140620$},
pnm = {135 - Fuel Cells (POF3-135) / Stochastic Aspects of
Transport Processes in Gas Diffusion Layers of HT-PEFCs
$(jiek30_20120501)$},
pid = {G:(DE-HGF)POF3-135 / $G:(DE-Juel1)jiek30_20120501$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000455145000204},
doi = {10.3390/app8122536},
url = {https://juser.fz-juelich.de/record/857772},
}