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.

The Ginzburg-Landau Equation Solved by the Finite Element Method

T.S. Larsen, M.P. Sørensen, N.F. Pedersen, and S. Madsen
Technical University of Denmark

Around 1950 V.L. Ginzburg and L.D. Landau proposed a phenomenological theory for phase transitions. One of the more successful applications of the theory is to superconductivity and in particular to superconductors placed in a magnetic field. Some superconductors allow for magnetic field penetration through quantized current vortices when the magnetic field exceeds a threshold value. In ...

Topology Optimization in Multiple Physics Problems

O. Sigmund
Technical University of Denmark

Topology optimization in physics requires a deeper understanding of the physical mechanisms. Multiphysics modeling brings the challenge of understanding such physics to a higher level. In this presentation we present the fundamentals of Topology Optimization, accompanied with many examples from different branches such as Automotive Applications, Structural Mechanics, MEMS, Flow Transistors, ...

Automotive Headlamp - Analytic Solution and Measurements of Condensation Inside a Headlamp

E. Preihs
General Motors Europe, Sweden

Dew points higher than the inner surface temperature of a headlight can become cosmetic problems. In this paper, a suggested analytical approach of dew point analysis in headligths is brought forward. The analytical solution is based on a temperature map consisting of heat transfer, natural convection and radiation. An empirical expression for relative humidity is then implemented based on the ...

Modelling Multilayer Systems with Time-Depended Heaviside and New Transition Functions

Y. Bilotsky, and M. Gasik
Helsinki University of Technology, Finland

In this paper, a five-layerered, thin-film assembly (TFA) with time-dependent internal geometry (layers thickness) was considered. This is a practical case for multilayer structures such as layered composites and coatings. The thermoelasticity analysis of the system with residual stress was carried out using COMSOL Multiphysics. Heaviside functions applicable for such problems has ...

Design and Measurements on a Small Radial Flux Permanent Magnet Generator with Concentrated Coils

Ø. Krøvel, and R. Nilssen
Dept. of Electric Power Engineering, Trondheim, Norway

This paper shows calculations of inductance, induced voltage and torque using COMSOL Multiphysics. Results from cogging torque calculations gave a considerable DC-offset, but the curve shape resembled expectations. The values are compared with experimental data.

Conductivity Effects in Electrical Tomography Systems

K.J. Alme [1], and S. Mylvaganam [2]
[1] Telemark Technological R&D Centre (tel-tek),Norway
[2] Telemark University College, Faculty of Technology, Norway

Electrical tomography systems estimate the cross-sectional distribution of an object by performing boundary measurements. These non-invasive measurements are sensitive to the electrical properties of the objects under investigation. The main focus in this paper is how to model these sensor systems using COMSOL Multiphysics. Results due to increasing conductivity and their effect on the ...

FEM Modeling of an Industrial Scale Electrolysis Cell

I.S. Laitinen, and J.T. Tanttu
Tampere University of Technology, Finland

In this paper, shell elements are used to reduce the complexity of a geometry in the modeling of an industrial scale copper electrolysis cell. The proposed model is described by multipysical since it takes into account interaction between electrical conduction and temperature. The model accuracy is estimated by comparing the simulation results to actual measurements.

Surface Acoustic Wave Generation in Wurtzite and Zincblende Piezoelectric Materials

D.B. Carstensen, T.A. Christensen, and M. Willatzen
University of Southern Denmark

A surface acoustic wave (SAW) device consists of a piezoelectric material (or film) on which interdigitated transducers (IDT) are placed. Here, they are analyzed based on PZT-5H wurtzite ceramics and InSb zincblende crystals. In PZT-5H, it is possible to generate SAW’s by aligning the interdigitated transducers (IDT) with the crystal axes. In the case with InSb zincblende structures ...

Current Distribution in the Electrodes of Industrial Three-phase Electric Smelting Furnaces

H.L. Larsen
Elkem AS Research, Oslo, Norway

In this paper, a model for a cross-section of the three electrodes in an industrial three-phase smelting furnace is made. The resulting current distribution within the electrodes is a function of the skin-effect within each electrode, and the mutual influence between the magnetic fields of the electrode currents - the so-called proximity effect.

A Complete Transport Model of Components through Zeolite Membranes in a Wicke-Kallenbach Permeation Cell

C.J. Kamp, I. Perdana, and D. Creaser
Chalmers University of Technology, Gothenburg, Sweden,

This study discusses the development of a complete model for multi-component mass transport through a zeolite membrane in a Wicke-Kallenbach permeation cell. A three dimensional permeation cell model was built in COMSOL Multiphysics. The general PDE mode was used to apply the Maxwell-Stefan equations for surface diffusion, the dominant transport mechanism in zeolite micropores, while the ...

Quick Search

1 - 10 of 23 First | < Previous | Next > | Last