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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/8344

Title: Simulation of liquid water beakthrough in a nano-tomography reconstruction of a carbon paper gas diffusion layer
Authors: Rama, Pratap
Liu, Yu
Chen, Rui
Ostadi, Hossein
Jiang, Kyle
Gao, Yuan
Zhang, Xiaoxian
Fisher, Rosemary
Jeschke, Michael
Keywords: Polymer electrolyte fuel cell
Gas diffusion layer
Porous flow simulation
Lattice Boltzmann
X-ray nano-tomography
Microscopic flow
Two-phase flow
Pore size distribution
Liquid intrusion
Issue Date: 2012
Publisher: Wiley (© American Institute of Chemical Engineers)
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.
Abstract: This 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.
Description: 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.12581
Version: Accepted for publication
DOI: 10.1002/aic.12581
URI: https://dspace.lboro.ac.uk/2134/8344
Publisher Link: http://dx.doi.org/10.1002/aic.12581
ISSN: 1547-5905
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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