Title: 2+1D modelling of a polymer electrolyte fuel cell with glassy-carbon microstructures
Authors : Schumacher, Jürgen
Eller, Jens
Sartoris, Guido
Colinart, Thibaut
Seyfang, Bernhard C.
Published in : Mathematical and Computer Modelling of Dynamical Systems
Volume(Issue) : 18
Issue : 4
Pages : 355
Pages to: 377
Publisher / Ed. Institution : Taylor & Francis
Issue Date: 3-Jan-2012
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (publication)
Language : English
Subjects : Model reduction; Modelling; Polymer electrolyte fuel cell
Subject (DDC) : 621.3: Electrical engineering and electronics
Abstract: A computationally efficient model of a polymer electrolyte fuel cell (PEFC) is presented, based on a 2+1D FEM modelling approach. This approach is suitable to take the high aspect ratio between the in-plane and the through-plane dimensions of fuel cells into account, and to avoid expensive 3D calculations. The anode and cathode are described by 2D transport models. The coupling between the anode and cathode side is established by a nonlinear point-to-point 1D model representing the membrane electrode assembly (MEA). This 1D boundary value problem is formulated using the computer algebra software Mathematica. The approach is based on the symbolic weak form expressions of a nonlinear system of PDEs. The integrands of the tangential element stiffness matrix and the element residual vector of the coupled FEM problem are computed analytically. These integrands are converted to C code automatically. The model is applied to simulate a micro PEFC without gas diffusion layers (GDLs). The simulations reveal an inhomogeneous in-plane electric current density. Further, neutron radiography data obtained with the micro fuel cell is compared to the calculated water flux between the 1D MEA model and the 2D domains. The model is used to explain the locations where water condensation is found.
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Article in scientific journal
DOI : 10.1080/13873954.2011.642390
ISSN: 1387-3954
URI: https://digitalcollection.zhaw.ch/handle/11475/11608
Appears in Collections:Publikationen School of Engineering

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