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.
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 ...
N. Aage, R. Sigurbjörnsson, S. Laustsen, and O. Skovgaard
Technical University of Denmark
In this paper, a simple tsunami wave problem is studied. The geometry of consideration is an infinite ocean with appreciable variations of the ocean bottom. Long-wave theory is applied and the flow equations are linearized over depth. It is verified that it is possible to combine the use of analytical methods and COMSOL Multiphysics.
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.
Sør Trøndelag University College, Norway
In this paper, we investigate a two-dimensional, small-scale model of a rigid block subjected to gravity, combined with the complete dynamical interaction with the surrounding liquid. Both the linear and rotational equations of motion of the body are coupled to the Navier- Stokes equations for the fluid flow using COMSOL Multiphysics. For the shapes studied in this work, we find that the ...
S.A. Kock , E. Fründ , W.Y. Kim , and J.V. Nygaard 
 Aarhus University Hospital, Denmark,
 Aarhus University, Denmark
Using magnetic resonance images, a model was created of an atherosclerotic plaque in a patient. A fluid-structure interaction analysis was then carried out in order to determine principal stresses in the protective fibrous cap. Results indicate stresses at high blood pressure in excess of 300 kPa, the established cap rupture strength. The technique could prove to be of great value to ...
Optimization of the Temperature Distribution in a Chemical Microreactor using a Multi-Segment Integrated Thin Film Heater
T.R. Henriksen, S. Jensen, U. Quaade, and O. Hansen
Technical University of Denmark
COMSOL Multiphysics has been used to study the effect of different heater design parameters on the temperature distribution in a chemical microreactor. The primary objective of the simulations has been to optimize the temperature uniformity inside the reaction chamber. In the simulations, special attention has been given to how the number, positions and widths of the heater strips relate ...
M. Olin , L. Laakso , J. Hannula , T. Galkin , and K. Väkeväinen 
 University of Helsinki, Finland
 Nokia Corporation, Finland
Small electronic devices are nowadays used in varying conditions, which expose them to stresses. One part of this stress is related to transport of potentially harmful chemical substances into small mechanical structures of devices, which happens by molecular diffusion and advection by air flow. We have applied a simplified contamination model, whose parameters, though, are estimated by ...
A. Machac , R. Henda , and B. Nilsson 
 School of Engineering, Laurentian University, Sudbury, ON, Canada
 Lund University, Sweden
Heat and mass transport phenomena in a tubular catalytic bed reactor are numerically investigated. A two-dimensional pseudo-heterogeneous model, accounting for transport in the solid and fluid phases, with axial and radial dispersions, is used to describe the reactor. The calculation results show the development of a hot spot in the reactor. The effects of inlet process conditions are ...