P. Pianko-Oprych, E. Kasilova, Z. Jaworski
West Pomeranian University of Technology, Faculty of Chemical Technology and Engineering, Szczecin, Poland
Micro-tubular Solid Oxide Fuel Cells (mSOFC) are attracting more and more interest as new generation of energy conversion devices. Although commercial applications still suffer from high costs, there is a need for further improvement of the cell performance, durability and start-up. To resolve those challenges, knowledge of the distributions of species concentration, temperature and current ...
Optimisation of the Electrochemical Instrumentation of a Wear Simulator through Finite Element Modelling
Déforge, D.1, 2, Ponthiaux, P.2, Wenger, F.2, Lina, A.1, Ambard, A.1
1 Electricité de France (EDF) R&D, Chemistry and corrosion group, Les Renardières, Moret sur Loing cedex, France
2 Laboratory LGPM, Ecole Centrale Paris, Chatenay-Malabry cedex, France
Stainless steels are often used in nuclear power plants due to their good corrosion resistance. This good behaviour is due to an oxide film which forms on their surface and insulates them from the corrosive media. Sometimes, flow-induced vibrations can however lead to some contacts between the components, and thus to the degradation of this oxide film. The mechanical removal leads to an increase ...
A. E. Khabbazi, A.J. Richards, and M. Hoorfar
School of Engineering, UBC Okanagan, Kelowna, BC Canada, Canada
Using COMSOL Multiphysics 3.5, a numerical model has been developed to determine the effect of the channel geometry and electrode configuration on cell performance based on polarization curves. The Butler-Volmer equation was implemented to determine the reaction rates at the electrodes. The Conductive Media DC module is used to model the electric fields within the fuel cell.
National University of Tainan
This presentation considers multiphysics modeling of Fuel Cells. The presentation introduces the fundamentals of Fuel Cells, the need for computer aided modeling of them, different difficulties and hindrances one encounters when modeling Fuel Cells, and methods to overcome these difficulties when modeling them. A good understanding and thorough discussion on different types of Fuel Cells ...
Numerical Modeling of the Electrochemical Behaviour of Metallic Alloys based upon Experimental Measurements at the Macro- and Microscale
H. Krawiec1, V. Vignal2, and R. Akid3
1AGH University of Science and Technology, Krakow, Poland
2ICB, UMR 5209 CNRS, Université de Bourgogne, Dijon, France
3Sheffield Hallam University, Sheffield, UK
Micro capillary-based techniques allow the interrogation of single metallurgical sites and are therefore becoming increasingly popular for the investigation of the electrochemical behavior of metallic phases and non-metallic heterogeneities in alloys. This study was carried out to assess the differences between current measurements made using a 'closed' micro-capillary system (the electrochemical ...
Pryor Knowledge Systems, Inc.
Bloomfield Hills, MI
Electroplating is a vital technology widely employed for many technological applications ranging from decorative or anti-corrosion coatings to high precision nanotechnology passive electromagnetic cloaking devices. This 2D Axisymmetric Electroplating Model demonstrates one of the modeling methodologies that can be used to calculate the transient generation of a coating thickness of a deposited ...
A. Aman, R. Gentile, Y. Xu, N. Orlovskaya
Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL, USA
Fuel cells are devices that convert chemical energy of a fuel into electrical energy through electrochemical processes. One of the types of fuel cell is the Solid Oxide Fuel Cell (SOFC) that uses solid ceramics for electrolytes. Numerical simulation involves constructing a mathematical model of the SOFC and use of specifically designed software programs that allows the user to manipulate the ...
Transient Simulation of the Electrolyte Flow in a Closed Device for Precise Electrochemical Machining
M. Hackert-Oschätzchen, M. Penzel, M. Kowalick, G. Meichsner, A. Schubert[1,2]
Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
Precise electrochemical machining (PEM) is an innovative machining technology which results from further development of the electrochemical sinking. PEM works with pulsed low frequency direct current and oscillation of the tool electrode. As part of the project ‘Electrochemical machining of internal precision and micro-geometries with high aspect ratios by process-state-dependent electrolyte ...
Amimer, A.1, 2, Mandin, P.3, Lincot, D.3, Horner, O.1
1 EDF R&D, Département MMC, Moret-sur-Loing, France
2 Ecole Nationale Supérieure de Chimie de Paris, Paris, France
3 Ecole Nationale Supérieure de Chimie de Paris, UMR 7575, Paris, France
Flow Accelerated Corrosion (FAC) of carbon steel has been studied world-wide for more than twenty years and is now fairly well understood. The influence of several parameters like water chemistry (pH, dioxygen content), temperature, hydrodynamic or mass transfer conditions (flow velocity, geometry) and steel composition on the corrosion kinetics has been demonstrated both theoretically (“Berge ...
Malki, B., Baroux, B.
LTPCM/INPG Grenoble, France
Modelling of pit chemistry in applied polarization mode is carried out using finite element method techniques (FEM). The results lead to the formulation of critical conditions for pit stabilization in terms of pit geometry and applied potential. More detailed computing is performed to compare the stability behaviour of both ferritic AISI 430 and austenitic AISI 304 stainless steels. The ...