Publication type: Conference other
Type of review: Peer review (abstract)
Title: Ensemble-based study of equilibrium liquid water distribution in PEM gas diffusion layer
Authors: Marmet, Philip
Capone, Luigino
Lamibrac, Adrien
Dujc, Jaka
Schumacher, Jürgen
et. al: No
Conference details: 13th Symposium on Modeling and Experimental Validation of Fuel Cells, Electrolysers and Batteries, EPFL Lausanne, Switzerland, 22 March 2016
Issue Date: 22-Mar-2016
Language: English
Subjects: PEM fuel cell; Gas diffusion layer; Water management; Ensemble-based simulation
Subject (DDC): 530: Physics
621.04: Energy engineering
Abstract: Macro-homogenous models enable the study of the complex interplay between operating conditions, materials response and cell performance, which is needed for the optimisation of the cell performances. However, input parameters to the macro-homogenous models are needed to account for the micro-scale properties of the single components and interfaces. For this purpose the water filled and open pore domains of gas diffusion layers (GDL) are determined depending on the boundary (and operating) conditions using the geometric input of the fiber/pore morphologies provided by tomography. The ultimate aim is to calculate the effective transport properties for different degrees of saturation, based on water distributions that are obtained with pore-scale modeling and from tomography. Considering the liquid water as statistical ensemble, a Monte Carlo-based approach based on the energetic balance between solid, liquid and gaseous phases in the porous medium, has been used to determine water distribution. PSMC (Pore Scale Monte Carlo) code we developed, is shown to be able to simulate the equilibrium distribution of the water (EWD) in the porous structure, minimizing the surface free energy of the water-solid-air system. Such an information will be later used to calculate the effective transport properties (e.g. permeability, conductivity) needed for a macroscopic simulation of the full PEM fuel cell.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Published as part of the ZHAW project: Designing multifunctional materials for proton exchange membrane fuel cells
Appears in collections:Publikationen School of Engineering

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