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.

Control of Preheating Process of Casting Die as Distributed Parameter System

C. Belavý[1], G. Hulkó[1], K. Ondrejkovic[1], and P. Zajícek[1]
[1]Institute of Automation, Measurement and Applied Informatics, Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic

In the paper distributed parameter system models in the form of lumped-input/distributed-output systems are introduced and modeling of temperature fields of the die in the benchmark casting plant is presented. Temperature fields were modeled and studied using a finite element method based software package COMSOL Multiphysics and numerical models in the form of a lumped-input/distributed-output ...

Numerical and Experimental Study of Flow, Heat Transfer and Concentration in a Scaled-up Fuel Cell Anode Channel Model

J. C. Torchia-Nüñez[1], and J.G. Cervantes-de-Gortari[1]

[1]Department of Thermal Engineering, National University of Mexico, UNAM, Mexico City, Mexico

Flow, concentration and temperature fields are studied with numerical and experimental methods inside a scaled-up fuel cell anode channel model. The low aspect ratio channel has a porous medium as the inferior wall where a mixing of different pH solutions occurs. Chromatic change of phenolphthalein is used to visualize concentration field and Particle Image Velocimetry (PIV) is used to visualize ...

Multiphysics Modelling of an Electromagnetic Horn Dedicated to a Neutrino Superbeam Facility

F. Osswald, and G. Gaudiot
IPHC, Univ. Louis Pasteur, Strasbourg

This paper presents thermo-mechanical and electromagnetic computational results in the time-harmonic and transient domains. This includes the stress analysis induced by the magnetic field and resulting pressure, the Joule heating with skin effects and the corresponding deformation.

A Tool for Studying the Ecology of Hydrosystems

D. Peyrard[1], Ph. Vervier[1], S. Sauvage[1], J.M. Sánchez-Pérez[1], and M. Quintard[2]
[1] Laboratoire d’Ecologie des Hydrosystèmes, Toulouse
[2] Institut de Mécanique des Fluides de Toulouse

The hyporheic zone is defined as an area where water and matter exchange through the sand, gravel, sediments and other permeable soils under and beside streams. Its impact on the hydro-system function is determined by the proportion of subsurface biogeochemical reactions and the fluxes of water exchanging with the hyporheic zone and flowing through the porous sediments. The objective of our ...

Simulation and in-situ Investigation of the Water Transport in the Porous Layers of Hydrogen Operated PEM Fuel Cells

C. Ziegler, T. Heilmann, and J. Hermann
Fraunhofer Institut für Solare Energiesysteme, Freiburg

Water management is one of the most important issues of current research in the field of proton exchange membrane fuel cells (PEMFCs). Understanding the transport of liquid water in the fuel cell is necessary for the optimization of the design and the control of PEMFCs. This paper presents a mathematical model that describes the dynamic two-phase transport and the experimentally observed ...

Educational and Industrial Multiphysics Modeling in Czech Republic

K. Bittner
HUMUSOFT s.r.o.

Humusoft was founded in 1990 and has been a representative for COMSOL since 1999, for several countries in Eastern Europe. In this presentation we begin with a short overview of the and historical milestones for Humusoft. The essence of this presentation concerns the wide ranging branches in which COMSOL Multiphysics is used from the Automotive industry to the Medical. From the corporate ...

COMSOL Multiphysics (FEMLAB) Modelling of Field Enhancements as a Result of Scattering from Metallic Nanostructures

Jian Wang
National Physical Laboratory
Teddington, UK

SERS is a candidate method for signle molecule detection. "Rough" metal surfaces or structured metal surfaces are often employed to obtain the desired enhancement through a coherent scattering process. We have modeled this process to gain a better understanding of it, and here present the results. --------------------------------- Keynote speaker's biography: Dr Jian Wang is a senior ...

Taking COMSOL Multiphysics Beyond Traditional Finite Elements

John Dunec
COMSOL Inc.
Palo Alto, USA

This talk will give you some tips and tricks for using techniques in COMSOL Multiphysics that you might not have known about. --------------------------------- Keynote speaker's biography: John Dunec received his Ph.D. from Stanford, specializing in numerical simulation of thermal-fluid systems. He has over two decades of experience in the field: first as a product engineer and manager at ...

Modeling of the Selective-area Epitaxial Growth of Compound Semiconductors and Application to the Design of Integrated Optical Devices

Masakazu Sugiyama
Associate Professor
Department of Electronics Engineering
University of Tokyo

In this presentation, selective-area growth (SAG) is simulated and the strain distribution in the selectively-grown area is estimated using the simulation. It is found that strain control is possible and polarization-insensitive integrated devices can be designed. Keynote speaker's biography:Masakazu Sugiyama received a PhD in Chemical Systems Engineering in 2001 and has been an Associate ...

NASA's Life Support Developments

Jim Knox
Technical Manager
NASA Marshall Space Flight Center
Huntsville, AL

This presentation deals with the investigation of new methods for the adsorption of carbon dioxide and water vapor from manned spacecraft atmospheres. The presentation touches not only the modeling of such methods, but also the important applications. Apart from modeling results on water adsorption and determination of heat transfer coefficients, an historical overview of spacecraft atmosphere ...

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