AIChE_water breakthroughFinal submission version.pdf (3.34 MB)
Simulation of liquid water beakthrough in a nano-tomography reconstruction of a carbon paper gas diffusion layer
journal contribution
posted on 2011-05-04, 15:06 authored by Pratap Rama, Yu Liu, Rui Chen, Hossein Ostadi, Kyle Jiang, Yuan Gao, Xiaoxian Zhang, Rosemary Fisher, Michael JeschkeThis study reports the feasibility of newly simulating liquid water intrusion into the porous gas diffusion
layer (GDL) of a polymer electrolyte fuel cell (PEFC) using X-ray nano-tomography and two-phase
lattice Boltzmann (LB) simulation. A digital 3D model of the GDL is reconstructed using X-ray nanotomography
while two-phase porous flow is simulated at two different levels of surface wettability by
applying a newly-developed numerical LB model. The results show liquid infiltration in a hydrophobic
GDL is comparatively lower (pore saturation of 0.11 to 0.90) than that for a hydrophilic GDL (pore
saturation of 0.36 to 0.96) over the liquid intrusion range of 1 kPa . 100 kPa. Visualisation of simulated
results in three dimensions reveal dissimilar liquid infiltration characteristics for the two levels of
wettability considered, yet also reveal a general breakthrough of liquid water at a pressure of 10 kPa
due to specific structural features of the GDL.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Citation
RAMA, P. ... et al, 2012. Simulation of liquid water beakthrough in a nano-tomography reconstruction of a carbon paper gas diffusion layer. AIChe Journal, 58 (2), pp. 646-655.Publisher
Wiley (© American Institute of Chemical Engineers)Version
- AM (Accepted Manuscript)
Publication date
2012Notes
This is a preprint of an article published in the AIChe Journal [© American Institute of Chemical Engineers]. The published version can be found at: http://dx.doi.org/10.1002/aic.12581ISSN
1547-5905Publisher version
Language
- en