Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-4949
Title: Lagrangian model using CFD flow data to predict the current-voltage characteristics of a solid oxide fuel cell repeat unit
Authors : Meier, Christoph
Meier, Daniel
Vandercruysse, Felix
Hocker, Thomas
Published in : The International journal of multiphysics
Volume(Issue) : 12
Issue : 4
Pages : 393
Pages to: 411
Publisher / Ed. Institution : Multi-Science Publishing
Issue Date: 2018
License (according to publishing contract) : CC BY 4.0: Attribution 4.0 International
Type of review: Peer review (publication)
Language : English
Subjects : SOFC; Fuel cell model
Subject (DDC) : 530: Physics
621.3: Electrical engineering and electronics
Abstract: A model framework is presented to predict the current-voltage (I-U) characteristics and hence the electrical performance of a solid oxide fuel cell (SOFC) repeat unit, i. e., a planar SOFC with adjacent current collector plates. The model uses as input residence times obtained from 3D CFD data for the fuel flowing through the anodic gas channels of a current collector plate. These residence times are then used by an electrochemical model to predict the fuel conversion along different flow paths for various electrical loads. This way, the overall (I-U) behaviour of the repeat unit follows from combining the fuel conversion rates (and respective electrical currents) for the individual flow paths. Since we use a Lagrangian reference frame for the electrochemical model, for a given electrical load, only a simple time-integration of a first-order ODE is required. Therefore, this modelling approach is very efficient and well suited for extensive parameter studies, e. g., to optimise the fuel residence times with respect to the electrical performance of the repeat unit. To ensure its reliability, the model has been validated by comparison with both experimental data and other (I-U) models.
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Article in scientific journal
DOI : 10.21256/zhaw-4949
10.21152/1750-9548.12.4.393
ISSN: 1750-9548
2048-3961
URI: https://digitalcollection.zhaw.ch/handle/11475/14148
Appears in Collections:Publikationen School of Engineering

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