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.

Determination of the Stress and Strain States in Metallic Structures using Piezoelectrical Transducers

D. Popovici, V. Paltânea, G. Paltânea, and G. Jiga
University of Bucharest

In this paper, we present a modern non-destructive method, using COMSOL Multiphysics, for the evaluation of the stress and strain states in metallic structures. This method can be successfully applied in civil engineering, installations or in structures where the determination of stress state can ot be realized by conventional method.

Simulation of Electromagnetic Shielding in the COMSOL Multiphysics Environment

J. Cuntala
Department of Mechatronics and Electronics, Faculty of Electrical Engineering, University of Žilina

The paper presents results of energy radiation from a point source, which is situated in a metal case with a quadrangular opening. The opening is shielded with a transparent metal grid to prevent the leakage of electromagnetic field. The cases with and without the grid are simulated.

Heat Transfer in Ferrofluid in Channel with Porous Walls

T. Strek
Institute of Applied Mechanics, Poznan University of Technology, Poland

The viscous, two-dimensional, incompressible and laminar time dependent heat transfer flow through a ferromagnetic fluid is considered in this paper. Flow takes place in channel between two porous walls under the influence of the magnetic dipole located beyond the channel. Results are obtained using standard computational fluid dynamics code in COMSOL with modifications to account for ...

Effect of Dielectric Barriers on the Electric Field of Rod-Plane Air Gap

A. Kara, Ö. Kalenderli, and K. Mardikyan
Istanbul Technical University, Turkey

The rod-plane gap is extensively used for studies on the breakdown characteristics of gases. In this study, influence of a dielectric barrier on the electric field and potential distributions in a vertically arranged rod-plane gap was numerically analysed by using the finite element method. Maximum field in the gap was examined for different gap distances, size and material of the ...

Application of COMSOL Multiphysics to Finite Strain Viscoelasticity of an Elastomeric Solid

B. Marvalov
Technical University of Liberec, Czech Republic

The paper presents an implementation in COMSOL Multiphysics of Holzapfel's material model for the viscoelastic stress response of carbon-black filled rubber at large strains. The simulation uses the Structural Mechanics Module finite strain formulation based on the material configuration with the right Cauchy-Green tensor as a strain measure. The time independent response of the rubber is ...

Selected Magnetostatic Analysis of 3 Coils Active Magnetic Bearing

A. Pilat
AGH University of Science and Technology, Krakow, Poland

A two dimensional model of a three-coil Active Magnetic Bearing (AMB) is considered where effects associated with stator and shaft lengths are omitted. The performed analysis plays an important role in the design procedures of AMB and helps in the verification of the construction assumptions.

Electromagnetic Resistance

G. Cibira
Akadémia ozbrojených síl, Liptovský Mikuláš

Both electromagnetic and thermal energy have influences on composite electronic machines. COMSOL Multiphysics has the tools for non-destructive EMC valuation. Simulated microwave owen and TEM models were field tested and the simulated results are comparable with real measurements.

Optimal Electrical Design of Spherical Photovoltaic Cells

A.M. Morega, J.C. Ordonez, P.A. Negoias, M. Morega, and R. Hovsapian

This paper reports the optimization results of the new generation of honeycomb spherical photovoltaic cells (SPVC) with respect to the series electrical resistance. The electrical potential (voltage) distribution is found by numerically integrating the mathematical model of the DC current distribution within the SPVC. --------------------------------- Keynote speaker's ...

Poisson Based Modeling of DC and AC Electroosmosis in Microfluidic Channels

M. Pribyl, and D. Snita
Department of Chemical Engineering, Institute of Chemical Technology, Prague

Two mathematical models of the electrokinetic flow are presented where the electroosmotic flow is induced by the interaction of a surface electric charge with a perpendicularly imposed electric field. In order to solve such problems, an anisotropic mesh of rectangular finite elements is developed. Stationary distributions of the model variables are computed for various sets of model ...

FE Model of Thermo-Mechanical Interaction in Rubber Blocks under Dynamic Cyclic Stress

L. Pešek
Petr Šulc Institute of Thermomechanics

In this paper, we investigate the feedback thermo-mechanical interaction in a pre-pressed rubber block used for resilient elements of composed tram wheels. The structural motion and heat conduction equations are solved interactively as a time-dependent problem. The equality of heat energy density and dissipation energy density realizes the coupling between the equations. The dissipation ...

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