Technical Papers and Presentations

Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Modeling the Electroplating of Hexavalent Chromium

N. Obaid[1], R. Sivakumaran[1], J. Lui[1], A. Okunade[1]
[1]University of Waterloo, Waterloo, ON, Canada

This project modeled an industrial chromium plating process for automotive components. The process was modeled via the COMSOL Multiphysics® Electrodeposition Module. The simulation examined the effect of solution conductivity, electrode spacing, and anode height utilizing a factorial design approach. A sensitivity analysis was used to study the effect of these variables on the thickness value at ...

Modeling Galvanic Corrosion

E. Gutierrez-Miravete[1], M. Turner[2]
[1]Rensselaer at Hartford, Hartford, CT, USA
[2]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 ...

Modeling the Vanadium Oxygen Fuel Cell

F.T. Wandschneider[1], M. Küttinger[1], P. Fischer[1], K. Pinkwart[1], J. Tübke[1], H. Nirschl[2]
[1]Fraunhofer-Institute for Chemical Technology, Pfinztal, Germany
[2]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 ...

Simulation of Cyclic Voltammetry of Ferrocyanide/Ferricyanide Redox Reaction in the EQCM Sensor

H. Kwon, and E. Akyiano
Dept. of Engineering and Computer Science
Andrews University
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. ...

Current Distribution on PEM Fuel Cells with Different Flow Channel Patterns

A. Paulino[1], E. Cunha[1], E. Robalinho[2], R. Passos[3], E. Santiago[1]
[1]Instituto de Pesquisas Energéticas e Nucleares, São Paulo, SP, Brazil
[2]Universidade Nove de Julho, São Paulo, SP, Brazil
[3]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 ...

Electrochemical Modeling of Copper Electrorefining in Lab Scale and Pilot Plant Scale

D. Sujish[1], Jinimol Joy[1], B. Muralidharan[1], G. Padmakumar [1], K.K. Rajan[1]
[1]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 ...

Simulation of Current Density for Electroplating on Silicon Using a Hull Cell

F. Lima[1], U. Mescheder[1], H. Reinecke[3]
[1]Hochschule Furtwangen University, Furtwangen, Baden-Wuerttemberg, Germany
[3]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 ...

Transient Modelling of a Fluorine Electrolysis Cell; Fully Coupled Electric Currents, Heat-Transfer, Diluted Species Transport and Laminar Bubbly Flow

R. Pretorius[1], P. L. Crouse[1], and C. J. Hattingh[2]
[1]University of Pretoria, Pretoria, Gauteng, South Africa
[2]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 ...

Modeling of Supercapacitor

G. Madabattula[1], S. K. Gupta[1]
[1]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 ...

The Effect of Electrolyte Flow Slots in Tooling Electrodes on Workpiece Surface Finish in Electrochemical Machining

B. Bingham[1]
[1]Oregon State University, Corvallis, OR, USA

Electrochemical machining (ECM) uses electrolysis to precisely remove material at high rates. ECM has many advantages over conventional machining: no tool wear, no induced mechanical or thermal stresses, high removal rates virtually independent of material hardness or strength, and excellent surface finishes. However, challenges can arise during the design of the tooling electrode when ...

Quick Search