Gregor Tavčar (Author), Tomaž Katrašnik (Author)

Abstract

The PEM fuel cell model presented in this paper is based on modelling species transport and coupling electrochemical reactions to species transport in an innovative way. Species transport is modelled by obtaining a 2D analytic solution for species concentration distribution in the plane perpendicular to the gas-flow and coupling consecutive 2D solutions by means of a 1D numerical gas-flow model. The 2D solution is devised on a jigsaw puzzle of multiple coupled domains which enables the modelling of parallel straight channel fuel cells with realistic geometries. Electrochemical and other nonlinear phenomena are coupled to the species transport by a routine that uses derivative approximation with prediction-iteration. A hybrid 3D analytic-numerical fuel cell model of a laboratory test fuel cell is presented and evaluated against a professional 3D computational fluid dynamic (CFD) simulation tool. This comparative evaluation shows very good agreement between results of the presented model and those of the CFD simulation. Furthermore, high accuracy results are achieved at computational times short enough to be suitable for system level simulations. This computational efficiency is owed to the semi-analytic nature of its species transport modelling and to the efficient computational coupling of electrochemical kinetics and species transport.

Keywords

gorivne celice;transport snovi;elektrokemični procesi;numerično modeliranje;fuel cells;species transport;electrochemical kinetics;analytic modelling;numerical modelling;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.352.6
COBISS: 13193243 Link will open in a new window
ISSN: 1996-1073
Views: 234
Downloads: 49
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Other data

Secondary language: Slovenian
Secondary keywords: gorivne celice;transport snovi;elektrokemični procesi;numerično modeliranje;
Type (COBISS): Article
Pages: str. 5426-5485
Volume: ǂVol. ǂ6
Issue: ǂiss. ǂ10
Chronology: Oct. 2013
DOI: 10.3390/en6105426
ID: 13299914