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.

Using Computational Multiphysics to Optimise Channel Design for a Novel PEM Fuel Cell Stack

F. A. Daniels[1], D. J. L. Brett[1], A. R. Kucernak[2], and C. Attingre[2]
[1]University College London, London, UK
[2]Imperial College London, London, UK

Polymer electrolyte membrane (PEM) fuel cells have significant potential as a source of clean, efficient energy production. This study presents a three-dimensional, non-isothermal, fully-coupled model of a PEM fuel cell with printed circuit board current collectors. The effect of the current collector design on transport phenomena and consequent cell performance is investigated. The model ...

Improving Fuel Usage in Microchannel Based Fuel Cells

P. Fodor, and J. D'Alessandro
Dept. of Physics
Cleveland State University
Cleveland, OH

In this work a miniaturized fuel cell design based on microchannels, into which the liquid fuel and oxidizer streams are fed through T shaped connectors, is optimized for improved fuel usage. This particular design exploits the laminar nature of the fluid flow at small Reynolds numbers to keep the fuel and oxidizer confined in the vicinity of the corresponding electrodes without the need of a ...

Simulating the Influence of the Nozzle Diameter on the Shape of Micro Geometries Generated with Jet Electrochemical Machining

A. Schubert[1][2], M. Hackert[1], and G. Meichsner[2]

[1]Chair Micromanufacturing Technology, Faculty of Mechanical Engineering, Chemnitz University of Technology, Chemnitz, Germany
[2]Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

Jet Electrochemical Machining (Jet-ECM) is an unconventional procedure for micromachining. Based on localized anodic dissolution three-dimensional geometries and microstructured surfaces can be manufactured using Jet-ECM. COMSOL Multiphysics is used at Chemnitz UT to simulate the electric current density in the jet and the dissolution process. A mesh displacement dependent on the normal current ...

A Comparative Study of the Basic Flow Field Designs for High Temperature Proton Exchange Membrane Fuel Cells - new

A. Lele[1], N. Lodha[1], R. Srivastava[1], A. Pandey[2], A. Paul[3]
[1]CSIR - National Chemical Laboratory, Pune, Maharashtra, India
[2]Reliance Industries Ltd., Reliance Technology Group, Navi Mumbai, Maharashtra, India
[3]CSIR - Central Electrochemical Research Institute, Karaikudi, Tamil Nadu, India

A Proton Exchange Membrane Fuel Cell (PEMFC) comprises a membrane-electrode assembly sandwiched between two conducting ‘monopolar’ plates having engraved gas flow channels, also called the flow field. The purpose of the flow field is to provide sufficient residence time for the gases to undergo reactions at the two electrodes, effect a homogeneous distribution of reactant gases over the given ...

Clean Energy Technologies: Growing Need for Multiphysics Modeling

Iouri Balachov
Senior Scientist,
SRI International, Menlo Park, CA, USA

Iouri Balachov is a Senior Scientist at SRI International (Menlo Park, CA) where he is leading development of Direct Carbon Fuel Cell technology for clean and efficient power generation from coal, biomass, and a wide variety of carbon containing fuels. Prior to SRI he was an engineer at Westinghouse nuclear (Pittsburgh, PA), researcher at Penn State University (State College, PA), and researcher ...

Determining Degradation in Solid Oxide Fuel Cells Electrode Materials Using COMSOL Multiphyics® Software - new

G. Cui[1], Z. Chen[1], F. Tariq[1], V. Yufit[1], N. Brandon[1]
[1]Imperial College London, London, UK

Solid Oxide Fuel Cells (SOFCs) are one of the most attractive technologies for meeting our future energy demands. They promise the efficient conversion of chemical to electrical energy and are a growing area of both academic and industrial interests. Typical electrode-supported SOFCs consist of three key components, two porous functional electrode layers (anode and cathode) and one dense ...

Finite Element Analysis of an Enzymatic Biofuel Cell: The Orientations of a chip inside a blood artery

C. Wang[1], Y. Parikh[1], Y. Song[1], and J. Yang[1]
[1]Mechanical & Materials Science Engineering, Florida International University, Miami, Florida, USA

Output performance of an implantable enzymatic biofuel cell (EBFC) with three- dimensional highly dense micro-electrode arrays has been simulated with a finite element analysis approach. The purpose of this research is to optimize the orientation of this EBFC chip inside a blood artery such that the mass transport of glucose around all the micro-electrodes can be improved and hence output ...

Advanced 3D Imaging Coupled to Modeling of Fuel Cell and Battery Electrodes

F. Tariq[1], V. Yufit[1], M. Marinescu[1], G. Cui[1], M. Kishimoto[1], N. Brandon[1]
[1]Imperial College London, London, United Kingdom

Solid Oxide Fuel Cells (SOFC) and Li-ion batteries (LIB) are electrochemical devices where performance is dependent on reactions inside porous electrode microstructures. Here we use tomographic techniques to probe 3D electrode structures (anodes and cathodes) at micro-nanometer length scales. Subsequently, micro/nano structural changes in electrodes are characterized and quantified. Utilizing ...

State of Charge (SOC) Governed Fast Charging Method for Lithium Based Batteries

F. Naznin[1]
[1]TVS Motor Company Ltd., Hosur, Tamil Nadu, India

The proposed State of Charge (SOC) governed fast charging method for secondary lithium based batteries charges a battery many times faster than the normal Constant Current-Constant Voltage (CC-CV) charging and reduces the side-effects generally accompanied by various fast charging methods. The proposed charging algorithm takes into account the varying internal impedance of the battery at ...

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 ...