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.

Control of Systems Modeled by COMSOL Multiphysics® as Distributed Parameter Systems

G. Hulkó[1], C. Belavý[1], P. Bucek[1], K. Ondrejkovic[1], and P. Zajícek[1]

[1]Institute of Automation, Measurement and Applied Informatics of Slovak University of Technology, Bratislava, Slovak Republic

In systems and control theory dynamical systems described by partial differential equations are known as distributed parameter systems. So for modeling and dynamical analysis of distributed parameter systems wide possibilities are offered by COMSOL Multiphysics® based on numerical solution of sets of partial differential equations by finite element method. Paper presents actual possibilities ...

The Use of Multiphysics Modeling in the Steel Industry

Filip Van den Abeele
Simulation Expert, OCAS, Belgium

OCAS is a joint venture between ArcelorMittal and the Flemish Region. She uses COMSOL Multiphysics for the following: Enamel solidification Magnetic Pulse Forming Electromagnetic modelling of electric machines Vortex Induced Vibrations Model Identification for Orthotropic Materials and much more ---------------------------------- Keynote speaker's biography:Filip Van den Abeele has a ...

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 ...

Accelerated Virus Capture to Surfaces Inside Physiological Media by using AC Electrokinetic Effects

Zhang, B., Docoslis, A
Department of Chemical Engineering, Queen’s University, Kingston, ON Canada

This paper presents a numerical investigation of the mechanism by which nonuniform electric fields, created by planar microfabricated electrodes, can cause accelerated transport and capture of virus to a surface inside media of physiological ionic strength. Numerical calculations presented here suggest that the primary mechanism of expeditious virus transport from the bulk of a sample to the ...

Virtual Homogeneous Isotropic and Real Unhomogeneous Anisotropic Metamaterials

Akalin, T.
IEMN (Institut d’Electronique de Microélectronique et de Nanotechnologie), CNRS UMR 8520, Dpt DHS, USTL (Université des Sciences et Technologies de Lille)

Characteristics on metamaterials and potential applications are presented with the FEMLAB® software simulations results. By definition, metamaterials are materials which exhibit properties which do not exist naturally. Another point is that metamaterials are associated with the negative refractive index property. In the first part, negative refraction will be defined and illustrated by ...

Study of the Metastable Pitting of Stainless Steels by Computer Simulations

Malki, B., Baroux, B.
LTPCM/INPG Grenoble, France

Modelling of pit chemistry in applied polarization mode is carried out using finite element method techniques (FEM). The results lead to the formulation of critical conditions for pit stabilization in terms of pit geometry and applied potential. More detailed computing is performed to compare the stability behaviour of both ferritic AISI 430 and austenitic AISI 304 stainless steels. The ...

Dimensioning simultaneous polymerase chain reactions (PCR) in capillary tubes

Berthier, J., Chatelain, F.
CEA/LETI

Polymerase chain reaction is the most usual way to amplify DNA strands for detection and biorecognition. However efficient biorecognition requires to perform many different PCRs at the same time. We present here a new concept of simultaneous PCRs in capillary tubes and more specifically the dimensioning of such a microsystem. The concept consists in performing different PCRs in annular rings ...

Effects of plasma rotation and magnetic fields on convection flows in the horizontal burning high intensity discharge lamps

Li, Y.M.
OSRAM SYLVANIA, Beverly, MA, USA

Convection is critical in shaping the plasma temperature profiles, species segregation, arctube temperature distributions, plasma stability and a whole range of phenomena of importance to the high intensity discharge (HID) lamp performance and maintenance. A 2D local thermodynamic equilibrium (LTE) arc plasma model is developed using FEMLAB. The model can be described by the energy balance ...

A multiphysics approach of the styrene free radical polymerization modeling performed in different microreactors

Serra, C., Sary, N., Schlatter, G.
LIPHT-CNRS UMR 7165, ECPM-ULP Strasbourg

This paper investigates the modeling of styrene free radical polymerization in two different types of microreactor for which the wall temperature is kept constant. The simulations are performed with the help of FEMLAB 3.1 to solve simultaneously partial differential equations resulting from the hydrodynamics, thermal and mass transfer (convection, diffusion and chemical reaction). The ...

Aharonov-Bohm interferometry with quantum dots as phase shifters : simulations

Alberty, J.M.
EIHES, Ecole d’Ingénieurs de Genève

Electron interferometry using the Aharonov-Bohm (AB) effect finds many applications in industrial areas such as future nanocomputer technologies, physical random number generators, electron phase microscopy and holography, to name just a few. The presence of a confined magnetic field surrounded by the interferometer arms, as originally proposed by Aharonov and Bohm is however a source of ...

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