Numerical Prediction of the Performance of Integrated Planar Solid-Oxide Fuel Cells, With Comparisons of Results from Several Codes. 6th International Conference on Fuel Cell Science Engineering, and Technology (Preprint).

Hawkes, G. L. ; O'Brien, J. E. ; Haberman, B. A. ; Marquis, A. J. ; Baca, C. M.

Technical Information Center Oak Ridge Tennessee

关键词: Solid oxide fuel cells;    Computerized simulation;    Current density;    Electrochemical cells;    Fluid flow;   

RP-ID  :  DE2008935463

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A numerical study of the thermal and electrochemical performance of a single-tube Integrated Planar Solid Oxide Fuel Cell (IP-SOFC) has been performed. Results obtained from two finite-volume computational fluid dynamics (CFD) codes FLUENT and SOHAB and from a two-dimensional inhouse developed finite-volume GENOA model are presented and compared. Each tool uses physical and geometric models of differing complexity and comparisons are made to assess their relative merits. Several single-tube simulations were run using each code over a range of operating conditions. The results include polarization curves, distributions of local current density, composition and temperature. Comparisons of these results are discussed, along with their relationship to the respective imbedded phenomenological models for activation losses, fluid flow and mass transport in porous media. In general, agreement between the codes was within 15% for overall parameters such as operating voltage and maximum temperature. The CFD results clearly show the effects of internal structure on the distributions of gas flows and related quantities within the electrochemical cells.