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.

Large and High Power Cylindrical Batteries - Analysis of the Battery Pack Temperature Distributions Using the COMSOL Multiphysics® and MATLAB® Simulation Softwares - new

O. Capron[1], A. Samba[1], N. Omar[1], H. Gualous[2], P. Van den Bossche[1], J. Van Mierlo[1]
[1]MOBI - Mobility, Logistics and Automotive Technology Research Centre, VUB - Vrije Universiteit Brussel, Brussels, Belgium
[2]Laboratoire LUSAC, Université de Caen Basse Normandie, Cherbourg-Octeville, France

The temperature distributions inside two packs (in-line and staggered) made of large cylindrical lithium iron phosphate cells (of 18 Ah nominal capacity) are analysed in this paper during a 90 A constant discharge current. The analysis of the battery packs temperature distributions is based on the results obtained with a two-dimensional modelling approach. For both packs, the simulations ...

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 ...

Numerical Modeling of the Bistability of Electrolyte Transport in Conical Nanopores

H. White[1], L. Luo[1]
[1]Department of Chemistry, University of Utah, Salt Lake City, UT, USA

A characteristic feature of nanochannels is that surface properties (e.g., electrical charge) play a more significant role in the transport of fluid and electrolyte. Two oppositely directed flows (electroosmotic flow and pressure-driven flow) determine the flow profile at the nanopore orifice as well as electrolyte distribution. Once there are two electrolyte solutions with different ...

Modeling of Liquid Water Distribution at Cathode Gas Flow Channels in Proton Exchange Membrane Fuel Cell – PEMFC

S. Skoda[1], E. Robalinho[2], A. Paulino[1], E.F. Cunha[1], M. Linardi[1]
[1]Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brazil
[2]Universidade Nove de Julho, São Paulo, Brazil

The objective of this study is to determine the locations where liquid water accumulates at cathode gas flow channels, and the corresponding operating conditions. In such way it is possible to mitigate slug flow, responsible for channel blockage and hindering the diffusion of reactants to the catalytic sites. The model presented here is a comprehensive PEMFC 3D model, which includes liquid water ...

Solid Oxide Fuel Cell Material Structure Grading in the Direction Normal to the Electrode/Electrolyte Interface Using COMSOL Multiphysics® - new

M. Andersson[1], B. Sundén[1]
[1]Department of Energy Sciences, Lund University, Lund, Sweden

Fuel cells (FCs) are promising as an energy producing device, which at this stage of development will require extensive analysis and benefit from numerical modeling at different time- and length scales. COMSOL Multiphysics® is used to describe an intermediate temperature solid oxide fuel cell (SOFC). Governing equations for heat, gas-phase species, electron, ion and momentum transport are ...

Electrochemical Li-Ion Battery Modelisation for Electric Vehicles

A. Falconi [1], D. Sicsic [2], R. Cornut [3], C. Lefrou [4]
[1] Renault s.a.s, CEA/DSM/IRAMIS/NIMBE/LICSEN, Université de Grenoble Alpes, Grenoble, France
[2] Renault s.a.s, Renault technocentre, Guyancourt, France
[3] CEA/DSM/IRAMIS/NIMBE/LICSEN, Gif Sur Yvette Cedex, France
[4] Université de Grenoble Alpes, LEPMI, CNRS, Grenoble, France

The future development of electric vehicles is now strictly linked with their batteries. In parallel of the actual research focused on the development of new materials and increase their performances in terms of energy, power, cost, durability and weight, it is necessary to develop modeling tools. The simulations are helpful for improving the knowledge of both physical and chemical phenomena, ...

Analysis of Electro-Thermal Hot Spot Formation in Li-Ion-Battery-Cells

W. Beckert[1], C. Freytag[1], T. Frölich[1], G. Fauser[1]
[1]Fraunhofer IKTS, Dresden, Germany

The presented model approach offers a computational efficient tool to analyze the influences of geometrical design details, material selection and operational conditions on the electro-thermal behavior of a full Li ion battery cell geometry. It considers typical aspects as anisotropic winding structure, electro-thermal coupling and nonlinear electrical characteristics for moderate computational ...

Primary Current Distribution Model for Electrochemical Etching of Silicon through a Circular Opening

A. Ivanov [1], U. Mescheder [1],
[1] Hochschule Furtwangen University, Furtwangen im Schwarzwald, Germany

Primary current distribution model for anodization of low-doped p-type silicon through a circular opening in frontside insulating mask is developed. The model is applied in two regimes of the process – pore formation and electropolishing – by definition of current density dependent functions of porosity and dissolution valence based on experimental results. As found also experimentally, ...

Analysis of 3-D Printed Structural Components for Cube Satellites - new

C. Herzfeld[1]
[1]SPAWAR Systems Center (SSC) ATLANTIC, Charleston, SC, USA

Additive manufacturing uses 3D printing to build physical parts from CAD-based designs. The technology includes fused deposition modeling (FDM) and selective laser sintering (SLS) methods. 3-D printing is of particular interest for smaller, one-of-a-kind, customizable products. A cube satellite (CubeSat) containing fiber reinforced SLS parts has been successfully launched (Ref 1). Lower ...

Parameter Estimation in a Single Particle Model Using COMSOL Multiphysics® Software and MATLAB® Optimization

B. Rajabloo [1], M. Désilets [1], Y. Choquette [2],
[1] Département de Génie Chimique et de Génie Biotechnologique, Université de Sherbrooke, QC, Canada
[2] Institut de recherche d’Hydro-Québec, Varennes, QC, Canada

When it comes to study the behavior of the secondary batteries, physics-based models are more representative of the real behaviour than equivalent circuit models, especially for the estimation of the life and capacity fading. On the other hand, the complexity and computational cost of sophisticated physics-based models like pseudo two-dimensional (P2D) models justify the use of more simplified ...