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.

Numerische Berechnungen zum Einfluss der Hydrophobierung auf die Carbonatisierung von Beton

Heinrichs, J.1, Gerdes, A.2, 3
1 Hochschule Karlsruhe - Technik und Wirtschaft, Institut für Angewandte Forschung
2 Hochschule Karlsruhe - Technik und Wirtschaft , Fakultät für Mechatronik und Naturwissenschaften
3 Forschungszentrum Karlsruhe, Institut für Technische Chemie, Bereich für Wasser- und Geotechnologie

Aus technischen, ökologischen und ökonomischen Gründen nimmt die Dauerhaftigkeit von Stahlbetonbauwerken in der heutigen Zeit einen immer größeren Stellenwert ein. Schadensursachen an solchen Bauwerken werden oft durch chemisch-physikalische Prozesse, wie z.B. den kapillaren Transport betonaggressiver Wässer in die Betonrandzone, hervorgerufen. Um nun die Dauerhaftigkeit bzw. die ...

Thermal Stability of an HTS AC Armature Winding

Morega, A.M.1, Ordonez, J.C.2
1 Department of Electrical Engineering, POLITEHNICA University of Bucharest, Bucharest, Romania
2 Department of Mechanical Engineering and Center for Advanced Power Systems, Florida State University, Tallahassee, FL

The armature of a High Temperature Superconductor (HTS) motor is usually an AC copper air winding mounted in an iron-less stator. This unconventional winding is the siege of intense power dissipation by Joule and variable magnetic field effects, and has to be thoroughly designed to provide for the thermal stability of the HTS motor. For a more detailed knowledge of the thermal field beyond ...

Simulation of magnetic injection moulding

Ogur, E.O., Goodship, V., Smith, G.F.
University of Warwick

Magnetic fields play a crucial role in materials science and they have been used extensively in the study of materials where they tend to alter the dynamics of charged particles. The purpose of this paper is to investigate the effect of an external magnetic field generated from a permanent magnet and its interaction, during the injection moulding, with polymer containing ferromagnetic nickel ...

Analysis of magnetohydrodynamics GTAW arc behavior

Roger, F.
Ecole Nationale Superieure de Techniques Avancées, PARIS

Argon plasma behavior in gas tungsten arc welding (GTAW) is directly linked to the weld quality. Indeed, the arc is the heat source which drives the weld shape. Solution of an induction-diffusion equation under axial symmetry conditions has been developped using thermal conduction and convection module of FEMLAB 3.1©. We predict current distribution in electric arc, induced magnetic field ...

Solid Modeling of Living Endothelial Cells

Butler, P.J.1, Ferko, M.C.2
1 Department of Bioengineering, Penn State University
2 Stryker Orthopedics Corporation

Biological cells are complex structures which are internally and externally regulated by mechanical forces and chemical signals. To better understand these complex interrelationships, bioengineers have developed numerous mathematical predictive models which characterize discrete biological functions of idealized cells. However, it is increasingly apparent that cell structure and function are ...

Simulation of electrokinetic instabilities using COMSOL Multiphysics

Carl Meinhart
University of California Santa Barbara
Santa Barbara, USA

This presentation shows a number of models of electrokinetic behaviour, each differentiated by a specific assumption. The purpose is to show how such assumptions can lead to varying results in elektrokinetic simulations. --------------------------------- Keynote speaker's biography: Professor Meinhart completed his Ph.D and Postdoctoral work at the University of Illinois in June of 1995. At ...

A predictive model for the micro-porosity quantitative in Al-Si alloy

Battaglia, J.L., Rozot, J.M.
France

The fatigue is the most important criterion for the securities parts (brake system for example). The increasing use of shaped cast aluminium in the security automotive parts has focused interest on the fatigue of theses alloys. The specific foundry software use empirical laws that do not fit with the reality, above all concerning the aluminium alloys. We proposed a new physical parsimonious ...

FEMLAB as a general tool to investigate the basic laws of physics

Bräuer, K.
Universität Tübingen, Inst. f. Theoretische Physik, Tübingen

The common basis of physical laws is the continuity of the action field. It implies Structural mechanics, Hydrodynamics, Quantum mechanics, Electrodynamics and the self-organisation of matter. A general tool to investigate all the basic equations is FEMLAB. In academic training it allows to take the concentration away from the manifold of mathematical methods of solutions and draw it to the real ...

Modeling of Thermal Microbial Destruction of Dried Powder Related to Properties Evolution and Granulometry

Ferret, E., Fine, F., Gervais, P.
Laboratoire de Génie des Procédés Alimentaires et Biotechnologiques, Dijon, France

Yeast cells of Saccharomyces cerevisiae were homogeneously incorporated to dried wheat flour particles, and then thermally treated in a new HTST (High Temperature Short Time) process for powders decontamination developed by our laboratory. A thermal modeling of spherical particles during treatment was developed with FEMLAB, taking into account thermal properties of each component and their ...

Modeling dynamic of composite plate with PZT patches embedded by using FEMLAB3.1

Wang, J.
Mads Clausen Institute, University of Southern Denmark

As an important part of the smart/intelligent structures, the composite plate with piezoelectric-ceramics (PZT) patches embedded has numerous values in many engineering applications, such as: aerospace, automotive, civil and mechanical engineering. A composite thin plate excited by PZT actuators is considered in this work. To describe the dynamic response of the quadrate plate clamped at its ...

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