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.

COMSOL application in modeling PEMFC transients

X. Li
Chinese Academy of Sciences, Dalian Institute of Chemical Physics, Beijing, China

We studied the transient characteristics of PEMFC and water transport during PEMFC start-up, concerning the following aspects: Effect of air stoichiometry change on transient behavior of PEMFC, Transient behavior of water transport during PEMFC start-up, and high temperature PEMFC modeling.

Simulation of MEA in PEMFC and Interface of Nanometer-Sized Electrodes

Q. Zhang, Y. Liu, and S. Chen
Wuhan University, College of Chemistry and Molecular Science, Wuhan, China

COMSOL Multiphysics is a very helpful simulation software in our researches on both PEMFC and nanometer-sized electrodes. In the first part of our presentation, the influence of humidity and temperature to the performance of PEMFC are studied by simulating the MEA (membrane electrode assembly) in PEMFC. In the second part, models of different nanometer-sized electrodes, including spherical ...

Cluster Diameter Determination of Gas-solid Dispersed Particles in a Fluidized Bed Reactor

M. Das
Department of Biotechnology, PESIT, Bangalore, Karnataka, India

Clustering is a common hydrodynamic characteristic observed among suspended gas-solid particles in a fast fluidized bed (FFB) regime of a circulating fluidized bed (CFB) system. In this paper clustering behavior has been studied with Geldart group B particles like coal and iron ore in a circulating fluidized bed of diameter 0.1016 m and height 5.62 m. The cluster size when calculated from the ...

Two Dimensional Model of a Catalytic Plate Reactor for Methane Steam Reforming Using Different Kinetic Mechanisms

M.A. Mundhwa[1], C.P. Thurgood[1], and B.A. Peppley[2]
[1]Royal Military College of Canada, Kingston, ON, Canada
[2]Queen's University, Kingston, ON, Canada

Coupling of an endothermic reaction and an exothermic reaction using catalytic plate reactor (CPR) is a well known concept for industrial processes such as steam reforming, dehydrogenation and hydrocarbon cracking. In the CPR, the exothermic reaction (e.g., combustion of methane) can provide the necessary heat to drive the endothermic reaction (e.g., steam reforming of methane). The present work ...

Simulating the Electrical Double Layer Capacitance

G. Zhang
Clemson University, Clemson, SC, USA

When a solid surface makes contact with a liquid medium, an electrical double layer (EDL) structure forms spontaneously through thermodynamic interaction between electrons and ions. In this study, we developed a computational model using commercial finite element analysis package COMSOL Multiphysics to simulate the double layer structure and quantify the EDL capacitance for the first time. In the ...

Modeling of Transport Phenomena during Hydrogen Uptake in an Alanate Storage System Equipped With Metallic Honeycomb Heat Exchanger

M. Bhouri[1], J. Goyette[1], B.J. Hardy[2], and D.L. Anton[2]
[1]Hydrogen Research Institute, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
[2]Savannah River National Laboratory, Aiken, SC, USA

In this paper, a metallic honeycomb structure is used as a heat exchanger in order to improve the hydrogen refuelling time for an alanate storage system. Using COMSOL software, the heat exchanger structure and the hydride bed are modeled as a two separate media and the governing equations describing the physics phenomena occurring during the loading process, are solved. The simulation results ...

Two Dimension Model of Solid Oxide Fuel Cell Using COMSOL

K. Song, and H. Knickle
University of Rhode Island, Kingston, RI, USA

As a promising candidate for future electricity providing, solid oxide fuel cell (SOFC) exhibit high efficiency, quiet operation and near zero emissions. In this work, two 2-dimension models of SOFC are constructed in COMSOL. Model 1 includes porous anode and cathode simulations with a thin electrolyte. The fuel cell is operated isothermally under fixed output voltages of 0.4, 0.6 and 0.8. The ...

Optimizing Bio-Inspired Flow Channel Design on Bipolar Plates of PEM Fuel Cells

X. Wang[1], J. Peitzmeier [2], and S. Kapturowski[3]
[1]Oakland University, Rochester, MI, USA
[2]Michigan Technological University, Houghton, MI, USA
[3]The State University of New York at Buffalo, Buffalo, NY, USA

The flow channel design on bipolar plates affects proton exchange membrane (PEM) fuel cell performance by influencing reactant distribution and water removal in an operating fuel cell. The fuel cell performance can be improved by varying the type, size, or arrangement of channels. Two bio-inspired designs have been proposed by a research group at Oakland University, which results in improvement ...

Mixers and Pumps for Microfluidic Systems, based on Conducting Polymer Oxidation Wave

K. Kannappan, G. Bogle, J. Travas-Sejdic, and D.E. Williams
University of Auckland, Auckland, New Zealand

Electrochemically-active conducting polymers (ECP) swell or shrink in response to ion and solvent incorporation or ejection as a result of electrochemical reaction of the polymer. When anodic potential is applied to an electrode attached to one end of ECP strip, the oxidation process starts from the electrode and proceeds along the polymer, propagating as a wave. This wave is driven as a ...

Electrochemical Modeling of Passive Film Formation on Steel in Simulated Concrete Pore Solutions

H.M. Bernardes[1], M. Mancio[2], and P.J.M. Monteiro[2]
[1]São Paulo State University, Ilha Solteira, SP, Brazil
[2]University of California, Berkeley, CA, USA

In this work, a tridimensional model of the electrochemical reactions taking place on the alloy/solution interface has been developed in the COMSOL Multiphysics environment. The model accounts for solution chemistry, cell potential, and solves the related mass, momentum and energy balances. The simulation is based mainly on the experimental results obtained by Mancio et al, which have employed ...

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