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.

Low Pt Cathodes for High Performance PEMFCs: Modeling and Experiments

F. Daouda[1], J. Hamelin[1], P. Benard[1], S. Kumar Natarajan [1]
[1]Insitut de recherche sur l'hydrogène, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada

We present a novel multi-layered electrode fabrication technique for polymer electrolyte membrane fuel cells (PEMFCs). This method consists of alternate layers of Pt deposition (0.05 mg/cm²) by sputtering on the painted multi-walled carbon-Nafion layer (CNL) with larger concentration of catalyst particles closer to the membrane. Parametric models were developed and validated by experimental ...

Three Dimensional Modeling of PEM Fuel Cells with Current Collection from the Gas Diffusion Layer

R. Pushpangadan[1], A. Soman[2], Arundas R.[2], N. G. Thoppan[2], S. P. Duttagupta[1]
[1]Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra, India
[2]College of Engineering, Munnar, Kerala, India

PEM fuel cells are very promising for portable applications. A key component of fuel cell is the flow field plate through which hydrogen will reach the anode, oxygen will reach the cathode and electron collection. Flow field plate made of silicon is not a good electrical conductor , so electrical contacts has to be attached to the Gas Diffusion Layer (GDL) for taking the power to outside ...

Modellierung von Dünnschichtzellen Thin Layer Flow Cell Modelling

E. Holzbecher[1], J. Fuhrmann[1], R. Halseid[2], and R.J. Behm[2]
[1] WIAS, Numerische Analysis, Berlin
[2] Universität Ulm, Ulm

Two designs for thin layer flow cells were set up at University of Ulm, Germany, in order to identify parameters describing the kinetics of methanol-oxydation – reactions, to be utilized in fuel cells. Computer models for two designs were constructed using COMSOL Multiphysics. Results from the numerical simulations were used to evaluate the different flow cell designs. The aim to ...

Effect of Channel Width on Fuel Cell Performance Using 3D Modelling

R. Pushpangadan, S. S. Dimble, and S. P. Duttagupta
IIT Bombay
Mumbai
Maharasthra, India

A three Dimensional model of the PEM Fuel cell is implemented using COMSOL Multiphysics and the channel width is varied to study the performance.Effect of channel width on the performance of the cell is studied by varying the width of the channel and keeping channel width to rib ratio constant at 1. Rib width is the width of the GDL area which is not covered by the channel. All other parameters ...

Flow Accelerated Corrosion Modelling of Carbon Steel using FEMLAB : A Preliminary Study

Amimer, A.1, 2, Mandin, P.3, Lincot, D.3, Horner, O.1
1 EDF R&D, Département MMC, Moret-sur-Loing, France
2 Ecole Nationale Supérieure de Chimie de Paris, Paris, France
3 Ecole Nationale Supérieure de Chimie de Paris, UMR 7575, Paris, France

Flow Accelerated Corrosion (FAC) of carbon steel has been studied world-wide for more than twenty years and is now fairly well understood. The influence of several parameters like water chemistry (pH, dioxygen content), temperature, hydrodynamic or mass transfer conditions (flow velocity, geometry) and steel composition on the corrosion kinetics has been demonstrated both theoretically (“Berge ...

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 ...

Modeling of the Transport Phenomena in Lithium-Ion Battery Electrolytes

A. Nyman, M. Behm, and G. Lindbergh
Applied Electrochemistry, School of Chemical Science and Engineering, Royal Institute of Technology Stockholm, Sweden

Modeling of mass transport is an important step in evaluating lithium-ion battery electrolytes and understanding cell performance. For high-power applications, concentration gradients in the electrolyte lead to limiting currents, which limit the power-density of the battery. The model has been used for determining a complete set of transport and thermodynamic properties for LiPF6 dissolved in an ...

Mathematical Modeling of Direct Borohydride Fuel Cells and its Experimental Validation

A. K. R. Paul[1], K. S. Gandhi[2], and A. K. Shukla[3]
[1] Central Electrochemical Research Institute – Madras Unit, CSIR Complex, Taramani, Chennai, Tamil Nadu, India
[2] Department of Chemical Engineering, Indian Institute of Science, Bangalore , Karnataka, India
[3] Solid State & Structural Chemistry Unit, Indian Institute of Science, Bangalore , Karnataka, India

  Direct borohydride fuel cells (DBFCs) use sodium borohydride (NaBH4) as fuel and hydrogen peroxide (H2O2) as an oxidant. A mathematical model encompassing mass balance of ionic species in different regions of the DBFC is developed. Both the oxidation of sodium borohydride and reduction of hydrogen peroxide are assumed to obey Tafel kinetics. This is combined with boundary conditions ...

Study of the Metastable Pitting of Stainless Steels by Computer Simulations

Malki, B., Baroux, B.
LTPCM/INPG Grenoble, France

Modelling of pit chemistry in applied polarization mode is carried out using finite element method techniques (FEM). The results lead to the formulation of critical conditions for pit stabilization in terms of pit geometry and applied potential. More detailed computing is performed to compare the stability behaviour of both ferritic AISI 430 and austenitic AISI 304 stainless steels. The ...

Convective Movements in an Electrolyser

B. Morel1, P. Namy2, C. Belhomme1, and I. Crassous3
1Comurhex, Pierrelatte, France
2SIMTEC, Grenoble, France
3LI2C, Paris, France

Modeling electrolysers is a challenge because of the strong coupling between electrical, thermal and CFD equations. Indeed the electrical conductivity of the electrolyte varies with the temperature, which in turn depends on the heat dissipated by the Joule effect and anode over-voltage.In the present study, the fluid velocity values are computed near the electrodes using a diphasic level set ...

Quick Search