20.500.12556/RUL-129248 An innovative hybrid 3D analytic-numerical approach for system level modelling of PEM fuel cells 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. fuel cells species transport electrochemical kinetics analytic modelling numerical modelling gorivne celice transport snovi elektrokemični procesi numerično modeliranje true false true Angleški jezik Slovenski jezik Članek v reviji 2021-08-31 11:18:28 2021-08-31 11:18:32 2022-09-08 04:07:30 0000-00-00 00:00:00 2013 0 0 Str. 5426-5485 iss. 10 Vol. 6 Oct. 2013 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.352.6 1996-1073 10.3390/en6105426 13193243 RAZ_Tavcar_Gregor_2013.pdf RAZ_Tavcar_Gregor_2013.pdf 1 87003E6D99C61E8C88BDAB12978392CF 8679112c2dddf791284a5589e6ec296ace9830c34945f6885e07b500df7d73d4 9811b437-0a3c-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146213 https://www.mdpi.com/1996-1073/6/10/5426 0 65d0b879-0a3c-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146212 Fakulteta za strojništvo 0 0 0