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.

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.

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.

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 ...

Predicting Tsunami Waves by Combining Analytical and Finite Element Methods

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.

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.

The Motion of Submerged Objects Falling Down an Inclined Plane

L. Engvik
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 ...

Stresses in Carotid Plaques Using MRI-based Fluid Structure Interaction Models

S.A. Kock [1], E. Fründ [1], W.Y. Kim [1], and J.V. Nygaard [2]
[1] Aarhus University Hospital, Denmark,
[2] 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 ...

Deposition of Aerosol Particles in Electronic Devices

M. Olin [1], L. Laakso [1], J. Hannula [2], T. Galkin [2], and K. Väkeväinen [2]
[1] University of Helsinki, Finland
[2] 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 ...

Modeling of Heat and Mass Transport in a Nonlinear Catalytic Bed Reactor

A. Machac [1], R. Henda [2], and B. Nilsson [2]
[1] School of Engineering, Laurentian University, Sudbury, ON, Canada
[2] 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 ...

Quick Search

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