E. Gutierrez-Miravete, M. Turner
Rensselaer at Hartford, Hartford, CT, USA
General Dynamics-Electric Boat, Groton, CT, USA
Galvanic corrosion is encountered in marine applications because one often has dissimilar metal joints and seawater acts as an electrolyte. One metal acts predominantly as anode and undergoes material dissolution while the other acts predominantly as cathode and is the site where a cathodic reaction takes place. Assuming a stagnant electrolyte, the equation governing the distribution of ...
M.S. Nesro, I.M. Elfadel
Masdar Institute of Science and Technology, Masdar City, Abu Dhabi, UAE
Lithium microbatteries are replacing conventional power sources in many microsystems areas such as wireless sensors and biomedical monitors. In many of these applications, compact models of micro batteries are needed both at the microsystems design stage and at the real-time power management stage. These compact models are typically derived from physics-based discretized formulations. We have ...
F.T. Wandschneider, M. Küttinger, P. Fischer, K. Pinkwart, J. Tübke, H. Nirschl
Fraunhofer-Institute for Chemical Technology, Pfinztal, Germany
Karlsruhe Institute for Technology, Karlsruhe, Germany
A two-dimensional stationary model of a vanadium oxygen fuel cell is developed in COMSOL Multiphysics®. This energy storage device combines a vanadium flow battery anode and an oxygen fuel cell cathode. The oxygen reduction reaction generates additional water, leading to a degradation of the catalyst performance over time. A logistic function is introduced to the Butler-Volmer equation in order ...
H. Kwon, and E. Akyiano
Dept. of Engineering and Computer Science
Berrien Springs, MI
In this paper, the cyclic voltammetry behavior of Ferrocyanide/Ferricyanide, which is commonly used for electrochemical DNA detection experiment, was studied in the commercial EQCM-D setup (Q-sense) using the COMSOL Multiphysics. The model was established in a 3D geometry of QCM liquid cell. The simulation shows depletion of concentration of ferrocyanice following applied electrode potential. ...
F. Lima, U. Mescheder, H. Reinecke
Hochschule Furtwangen University, Furtwangen, Baden-Wuerttemberg, Germany
Institut für Mikrosystemtechnik, Freiburg im Breisgau, Baden-Wuerttemberg, Germany
Electrodeposition has a major advantage over other methods of thin film deposition. It allows deposition at atmospheric pressure and room temperature, requiring inexpensive equipment. However, there are several parameters which can influence an electroplated metal layer quality. The current density distribution is taken into consideration. The Hull cell is an electrodeposition tank with a ...
A. Paulino, E. Cunha, E. Robalinho, R. Passos, E. Santiago
Instituto de Pesquisas Energéticas e Nucleares, São Paulo, SP, Brazil
Universidade Nove de Julho, São Paulo, SP, Brazil
Universidade Federal do Amazonas, Manaus, AM, Brazil
In this paper, PEM fuel cells with serpentine and interdigitated flow channel patterns were studied. The main objective was to analyze the influence of the flow channel design in the current distribution over the cell. A 3D isothermal model comprising the entire 5 cm² cell was developed for this study. Polarization curves show that both cells have very similar performances. However, current ...
Transient Modelling of a Fluorine Electrolysis Cell; Fully Coupled Electric Currents, Heat-Transfer, Diluted Species Transport and Laminar Bubbly Flow
R. Pretorius, P. L. Crouse, and C. J. Hattingh
University of Pretoria, Pretoria, Gauteng, South Africa
Metallurgical Testing and Consultation (MTC) cc, Farrarmere, South Africa
A laboratory-scale fluorine reactor was simulated with COMSOL Multiphysics®. This model employs fundamental fully coupled electron-, heat-, mass- and momentum transfer (two-phase) equations to deliver a transient model of the above-mentioned reactor. Quasi-steady-state results were produced for the current density, electric field, temperature, reactive species concentration, gas- and liquid ...
D. Sujish, Jinimol Joy, B. Muralidharan, G. Padmakumar , K.K. Rajan
Fast Reactor Technology Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
Pyrochemical reprocessing is a non-aqueous method for reprocessing spent metallic fuels. Electrorefining is an important step in pyrochemical reprocessing. Ambient temperature electrorefiner (ATER) is a facility to demonstrate the various mechanisms and associated interlocks. Here the electrolysis of copper in acidified copper sulphate electrolyte will be carried out to demonstrate the ...
G. Madabattula, S. K. Gupta
Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India
Low cost high energy density batteries that can be charged and discharged rapidly are required in a number of applications. Tapping energy from renewal resources such as solar, wind and tide requires rapidly generated energy to be first stored and then used round the clock. Storing energy of a moving vehicle as it slows down and recovering it to accelerate the vehicle later can significantly ...
Comparison of Darcy's Law, the Brinkman Equation, the Modified Navier-Stokes Equation and the Pure Diffusion Equation in PEM Fuel Cell Modeling
Z. Shi and X. Wang
Oakland University, Rochester, MI, USA
A two dimensional isothermal single phase PEM fuel cell model is developed and implemented in COMSOL Multiphysics, where Darcy's law, the Brinkman equation, the modified Navier-Stokes equation, and the pure diffusion equation are applied separately in porous electrodes. Three values of GDL permeability are investigated. Additionally, the order of the magnitude of each term in the modified N-S ...