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dc.contributor.authorGaweł, Duncan Albert Wojciechen
dc.date2013-10-01 09:41:47.617
dc.date.accessioned2013-10-03T20:15:56Z
dc.date.available2013-10-03T20:15:56Z
dc.date.issued2013-10-03
dc.identifier.urihttp://hdl.handle.net/1974/8399
dc.descriptionThesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2013-10-01 09:41:47.617en
dc.description.abstractA numerical model was developed to evaluate the performance of detailed solid oxide fuel cell (SOFC) anode microstructures obtained from experimental reconstruction techniques or generated from synthetic computational techniques. The model is also capable of identifying the linear triple phase boundary (TPB) reaction sites and evaluating the effective transport within the detailed structures, allowing a comparison between the structural properties and performance to be conducted. To simulate the cell performance, a novel numerical coupling technique was developed in OpenFOAM and validated. The computational grid type and mesh properties were also evaluated to establish appropriate mesh resolutions to employ when studying the performance. The performance of a baseline synthetic electrode structure was evaluated using the model and under the applied conditions it was observed that the ionic potential had the largest influence over the performance. The model was used in conjunction with a computational synthetic electrode manufacturing algorithm to conduct a numerical powder to power parametric study investigating the effects of the manufacturing properties on the performance. An improvement in the overall performance was observed in structures which maximized the number of reaction sites and had well established transport networks in the ion phase. From the manufacturing parameters studied a performance increase was observed in structures with low porosity and ionic solid volume fractions near the percolation threshold, and when the anodes were manufactured from small monosized particles or binary mixtures comprising of smaller oxygen ion conductive particles. Insight into the anode thickness was also provided and it was observed that the current distribution within the anode was a function of the applied overpotential and an increase in the overpotential resulted in the majority of the current production to increase and shift closer to the electrode-electrolyte interface.en
dc.language.isoengen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectMicroFOAMen
dc.subjectTriple phase boundary lengthen
dc.subjectPowder to Poweren
dc.subjectSample sizeen
dc.subjectMicrostructure discretizationen
dc.subject3D microstructure modelen
dc.subjectCurrent Generationen
dc.subjectAnodeen
dc.subjectCoupled physics and kinetics modelen
dc.subjectOpenFOAMen
dc.subjectSolid Oxide Fuel Cellsen
dc.titleThe Development of a Coupled Physics and Kinetics Model to Computationally Predict the Powder to Power Performance of Solid Oxide Fuel Cell Anode Microstructuresen
dc.typethesisen
dc.description.degreeM.A.Sc.en
dc.contributor.supervisorPharoah, Jon G.en
dc.contributor.supervisorBeale, Steven B.en
dc.contributor.departmentMechanical and Materials Engineeringen
dc.degree.grantorQueen's University at Kingstonen


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