Speaker
Description
The polymer electrolyte membrane fuel cell~(PEMFC) is a potential alternative in the backdrop of
an evolving energy landscape i.e. emission norms, electrification and sustainability.
The commercialization of PEMFC has been a challenging process inspite of advantages like zero emissions, high efficiency
and power density. The hurdles on the other hand include the cost of the catalyst, the water-transport or
water balance problem and durability.
The design of the gas diffusion layer~(GDL) of a PEMFC plays a crucial role in its performance
as it helps maintain an appropriate water balance at different loads.
The liquid transport in the pores of GDL is transient phenomenon which is required to
modelled for through understanding. Previously (cite 1&2), our team investigated experimentally using
a simple pore structure with connecting pores so as to gain an insight into the transient
nature of liquid invasion including the Haines jump. The change in the preferred pathway was
shown to be strongly influenced by the pore lengths, pore radii ratios and droplet detachment
volumes.
We aim to further provide a precise picture of flow/liquid invasion by the use of
numerical simulations. The Shan and Chen multicomponent multiphase model (MCMP-SC; cite 3)
is a mesoscopic model from the lattice Boltzmann family that can be used for simulating dynamic
multiphasic flow in porous media. The results thus obtained would be analysed and validated using
the experimental results.
References:
1: https://doi.org/10.1063/1.5006185
2: https://iopscience.iop.org/article/10.1149/08613.0119ecst/pdf
3: https://doi.org/10.1103/PhysRevE.47.1815
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