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.

Design and Simulation of Sensors to Detect Methanol

C. K. Subramaniam[1], Muthuraja[1]
[1]School of Electronics Engineering, VIT University, Vellore, Tamil Nadu, India

The Direct Methanol Fuel Cell (DMFC) working is dependent on the concentration of methanol in water before it is introduced in the anode. DMFC has a high energy density when generating electrical power from fuel, and is an attractive power source for portable devices. A fundamental limitation in DMFC technology is methanol crossover. In this process methanol diffuses from the anode through the ...

Introduction to the Modelling of Crevice Corrosion with FEMLAB

Blondel, P., Girardin, G.
AREVA, Centre Technique Framatome ANP, Dpt Corrosion-Chimie Porte Magenta, Le Creusot, France

Crevice corrosion is a form of localized corrosion, which occurs in zones where a metallic material surface is in contact with a small volume of confined, stagnant liquid whereas most of the material surface is exposed to the bulk environment. A 1D model is proposed, combining the mass transport equations written for each chemical species with the electroneutrality condition. The homogenous ...

Fuel Cell Modeling Activities

M. Noponen
VTT Technical Research Centre of Finland

Although the principle of the Fuel Cell was discovered in the first half of the 19 th century, the research on Fuel Cells is still a growing area. In this presentation we start by outlining the basic principles of the Fuel Cell. We then give a more detailed study of the Solid Oxide Fuel Cell (SOFC), and the Polymer Electrolyte Fuel Cell (PEFC). We then continue by showing experimental ...

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 ...

A 2D Axisymmetric Electrodeposition Model

R. Pryor
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 ...

Electrochemically Driven Transport in Nanopores and Membranes

H. White
University of Utah

In this presentation we outline the analysis methods applicable to the electrochemical driven transport in nanopores and membranes. This is a modern and ever growing research area with many different applications, some examples are: • iontophoretic drug delivery across skin, • protein ion channel based sensors, • resistive pulse counting of nanoparticles, • 3-D microbattery ...

Modeling of Next Generation Energy Systems by Using COMSOL: Fuel Cell, High Power Lithium Ion Battery, and Dye-Sensitized Solar Cell

Jake Kim
Samsung SDI CAE Team

In this presentation we present methods for modeling alternative energy sources such as Fuel Cells and Solar Cells. The presentation also considers aspects of the modern world and what impact the high consuming of energy sources will have on tomorrow's society. This presentation is written in Korean. --------------------------------- Keynote speaker's biography: Jake Kim received ...

Study of Hydrogen Release from a Metal Hydride Bed

K. Song[1], and H. Knickle[1]

[1]Department of Chemical Engineering, University of Rhode Island, Kingston Rhode Island, USA

In this paper we present a study of the time dependent analysis of a metal hydride bed (MHB) which provides constant flow to a fuel cell at required power loading and pressure. The hydrogen gas phase pressure, the hydrogen concentration in the metal hydride and the hydrogen desorption rate are consider as key variables in this study. Both the space scale and time scale analysis are performed. ...

Creating Business Opportunities using Mathematical Modeling

E. M. Fontes
Catella Generics AB

Computational mathematical modeling has allowed scientists and engineers to perform better, faster, and more economical virtual experiments. Through mathematical modeling, an application expert can simulate performance characteristics during different operating conditions and thereby accelerate the pace of understanding new electrochemical system in relation to specific application ...

Diffusion-controlled Redox Cycling at Nanoscale Interdigitated Electrodes

Yang, X.1, Zhang, G.1, 2, 3
1 Micro/Nano Bioengineering Laboratory, Department of Biological and Agricultural Engineering
2 Nanoscale Science and Engineering Center
3 Faculty of Engineering, The University of Georgia, Athens, GA 30602, USA

Diffusion controlled redox cycling behavior at nanoscale interdigitated electrodes (IDEs) was simulated using FEMLAB. Cyclic voltammograms were obtained for IDEs with various sizes and spacing, and current collection efficiency and cycling number were calculated. We found that as the size of the IDEs decreased, the shape of the voltammogram changed from a peak-shaped curve to a sigmoidal ...

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