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.

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 ...

Simulation der elektrischen Feldverteilungen im elektrischen Rasterkraftmikroskop

Müller, F, Hietschold, M - Institut für Physik Analytik an Festkörperoberflächen (AFKO)

Passive barrier assessment of PET bottles through an FEM simulation of gas permeability

Profaizer, M.
Nestlé Waters Italy

Shelf life estimation is a very important issue in the beverage industry. Depending on the packaging application, estimation of the carbon dioxide loss through the plastic bottle walls has always been desirable and challenging at the same time. In this work an FEM approach is presented, which is shown to be able to replace time consuming, expensive lab tests. Gas permeability through the ...

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 ...

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 ...

A Computational Investigation of Flow - Mechanical Energy Loss: Relevance to the Total Cavopulmonary Connection

Wiesman, J.P.1, Hamlington, K.L.1, Gaver, D.P.1, Ross-Ascuitto, N.T.2, Ascuitto, R.J.2
1 Tulane University, Department of Biomedical Engineering
2 Tulane University, Department of Pediatrics and Physics

The “Total Cavopulmonary Connection (TCPC)”, or Fontan operation, has become the surgical treatment of choice for children with functional single-ventricle heart disease. We assessed fluid energetics relevant to TCPCs using the computational fluid-dynamics package FEMLAB 3.1 (COMSOL, Inc., Burlington, MA) to describe non-pulsatile flow through a conduit, taken to represent an obstructed ...

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