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Finite Element Method (FEM) Model and Performance Analysis of Solid Oxide Fuel Cells
This work presents a numerical FEM framework, capable of predicting SOFC performance under technically relevant, planar stack contacting conditions. A high level of confidence in the model predictions is supplied by using exclusively experimentally determined material/kinetic parameters and by a comprehensive validation. The presented model aids SOFC stack development by pre-evaluating possible material choices and design combinations for cells/interconnectors without any experimental effort.
Modellgestützte Analyse des Stackbetriebs von Festoxidzellen
In dieser Arbeit wird der Stackbetrieb von Festoxidzellen (engl. Solid Oxide Cells, SOCs) mit Hilfe eines Simulationsmodells analysiert. Hierfür werden sämtliche gekoppelten physikalischen und chemischen Teilprozesse innerhalb einer zweidimensionalen Geometrie einer einzelnen Stackebene abgebildet. Nach der Parametrierung mit experimentellen Daten und einer umfangreichen Validierung, wird das Modell auf drei Fragestellungen der SOC-Technologie angewendet. - In this work, the stack operation of solid oxide cells (SOCs) is analyzed by a simulation model. For this purpose, all coupled physical and chemical sub-processes are represented within a two-dimensional geometry of a single stack level. After parameterization with experimental data and extensive validation, the model is applied to three research issues in SOC technology.
Post-Roman Towns, Trade and Settlement in Europe and Byzantium: Byzantium, Pliska, and the Balkans
In this collection leading international authorities analyse the structures and economic functions of non-agrarian centres between ca. 500 and 1000 A.D. - their trade, their surrounding settlements, and the agricultural and cultural milieux. The thirty-one papers presented at an international conference held in Bad Homburg focus on recent archaeological discoveries in Central Europe (Vol. 1), as well as on those from southeastern Europe to Asia Minor (Vol. 2).
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Task Design In Mathematics Education
*THIS BOOK IS AVAILABLE AS OPEN ACCESS BOOK ON SPRINGERLINK* This open access book is the product of ICMI Study 22 Task Design in Mathematics Education. The study offers a state-of-the-art summary of relevant research and goes beyond that to develop new insights and new areas of knowledge and study about task design. The authors represent a wide range of countries and cultures and are leading researchers, teachers and designers. In particular, the authors develop explicit understandings of the opportunities and difficulties involved in designing and implementing tasks and of the interfaces between the teaching, researching and designing roles – recognising that these might be undertaken by...
Post-Roman Towns, Trade and Settlement in Europe and Byzantium: Byzantium, Pliska, and the Balkans
In this collection leading international authorities analyse the structures and economic functions of non-agrarian centres between ca. 500 and 1000 A.D. - their trade, their surrounding settlements, and the agricultural and cultural milieux. The thirty-one papers presented at an international conference held in Bad Homburg focus on recent archaeological discoveries in Central Europe (Vol. 1), as well as on those from southeastern Europe to Asia Minor (Vol. 2).
