K.J. Alme , and S. Mylvaganam 
 Telemark Technological R&D Centre (tel-tek),Norway
 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 ...
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 ...
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 ...
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, ...
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 ...
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.
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.
Chalmers University of Technology, Sweden
In this paper, we perform simulations of the auto-thermal reforming of a hydrocarbon fuel in a monolithic reactor. The partial differential equations describing mass, heat and momentum transport were formulated and solved using COMSOL Multiphysics. It was found that mass transport limitations in the washcoat could also severely limit the rate of the reforming reaction. Heat transport ...
M. Olin , L. Laakso , J. Hannula , T. Galkin , K. Väkeväinen , and K. Hartikainen 
 University of Helsinki, Finland
 Nokia Corporation, Finland
 Ambertec Oy, Finland
In this paper, we perform a leakage analysis fitted to approximate analytical diffusion and air exchange models, by the helium injection method for one mobile phone type. In order to extend the applicability of our models, we developed a more complicated numerical model for diffusion, thermal conduction and free convection inside the phone.
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.