Comparison of Isobaric and Non-isobaric Operations on a Two-Phase Dynamic Model for PEFC Cathode Gas Diffusion Layer

Key words,： Two 1-D dynamical and isothermal models of cathode gas diffusion layer（GDL） with isobaric and non-isobaric operations for polymer electrolyte fuel cells（PEFCs） were developed and implemented in COMSOL Multiphysics v3.5.The artificial diffusion coefficient was introduced as well to make t...

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Published in	东华大学学报（英文版） Vol. 28; no. 6; pp. 539 - 546
Main Author	纪光霁陈翌周苏陈凤祥
Format	Journal Article
Language	English
Published	Chinesisch-Deutsche Hochschulkolleg,Tongji University,Shanghai 200092,China 2011 School of Automotive Studies,Tongji University,Shanghai 201804,China%School of Automotive Studies,Tongji University,Shanghai 201804,China
Subjects	gas diffusion layer (GDL) polymer electrolyte fuel cell (PEFC) isobaric and non-isobaric operations two-phase model
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ISSN	1672-5220

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Summary:	Key words,： Two 1-D dynamical and isothermal models of cathode gas diffusion layer（GDL） with isobaric and non-isobaric operations for polymer electrolyte fuel cells（PEFCs） were developed and implemented in COMSOL Multiphysics v3.5.The artificial diffusion coefficient was introduced as well to make the numerical computation be stable.In the non-isobaric model,the pressure of gas mixture was obtained by summing up the governing equations of gaseous components,instead of Navier-Stoks equation.Comparison of the two models were carried out with the steady-states and dynamical simulations under given conditions.The corresponding analysis based on the simulated results was also given simultaneously.This paper is contributed to finding the differences between the isobaric and non-isobaric operation in the two-phase model of cathode GDL.
Bibliography:	31-1920/N JI Guang-ji, CHEN Yi, ZHOU Su, CHEN Feng-xiang（ 1 School of Automotive Studies, Tongji University, Shanghai 201804, China; 2 Chinesisch-Deutsche Hochschulkolleg, Tongji University, Shanghai 200092, China） two-phase model; gas diffusion layer （GDL） ; isobaric and non-isobaric operations; polymer electrolyte fuel cell （PEFC） Key words,： Two 1-D dynamical and isothermal models of cathode gas diffusion layer（GDL） with isobaric and non-isobaric operations for polymer electrolyte fuel cells（PEFCs） were developed and implemented in COMSOL Multiphysics v3.5.The artificial diffusion coefficient was introduced as well to make the numerical computation be stable.In the non-isobaric model,the pressure of gas mixture was obtained by summing up the governing equations of gaseous components,instead of Navier-Stoks equation.Comparison of the two models were carried out with the steady-states and dynamical simulations under given conditions.The corresponding analysis based on the simulated results was also given simultaneously.This paper is contributed to finding the differences between the isobaric and non-isobaric operation in the two-phase model of cathode GDL.
ISSN:	1672-5220