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.

Confinement Loss Computations in Photonic Crystal Fibres using a Novel Perfectly Matched Layer Design

Viale, P., Février, S., Gérôme, F., Vilard, H.
IRCOM, CNRS UMR 6615, Limoges, France

To modelize infinite photonic crystal fibre (PCF) with 2D-finite-geometry mode solver, it is necessary to use a perfectly matched layer (PML). We have performed a new type of PML design to simulate propagation in PCFs. The results obtained with index-guiding PCFs are in very good agreement with previous theoretical published results. Our PML is quickly optimized. The link between MATLAB and ...

Optimization of thin film heater/sensor design for miniature devices using finite element analysis

Hoang, V.N., Kaigala, G.V., Backhouse, C.J.
ECERF, University of Alberta, Edmonton, Alberta, Canada

Localized heating is poised to become an integral part of microfluidic devices in various life-science applications. This is catalyzed by the scale of economics, the advantageous fluidic behavior at small volumes, and the ever increasing need for rapid and high throughput assays for pharmaceutical industry and other combinatorialbased studies. For precision confined heating, thin film resistive ...

Mathematical modeling of nanomaterials

Strauss, D.J., Trenado, C.
Institute of New Materials, Saarbrücken

Mathematical modeling at the Institute of New Materials has played a crucial role in supporting the manufacturing and design of new technologies of nanomaterials, whose applications range from transportation, electronics and optics engineering to environmental sciences. In this paper, we focus our attention to two mathematical models together with their corresponding FEMLAB simulations: The ...

Electromagnetic material properties sensor

Gamache, R.W.
TransTech Systems, Inc

Recent research conducted by the author has shown that electromagnetic sensors can be utilized to determine selected properties of heterogeneous material mixtures containing water by observing the manifestations of surface polarization effects that occur in the radio frequency portion of the electromagnetic spectrum. Prior to the availability of multiphysics finite element (FEM) or finite ...

Automatische Modellgenerierung für Anwendungen aus Mikrosystemtechnik und Mikroelektronik

Martin, R., Reitz, S., Bastian, J.
Fraunhofer-Institut für Integrierte Schaltungen, Außenstelle EAS, Dresden

Bei der Entwicklung von Systemen werden oft Finite-Elemente-Simulatoren für die genaue Berechnung des Verhaltens einzelner Komponenten eingesetzt. Dies ist in der Regel mit langen Rechenzeiten verbunden. Für die Simulation des Gesamtsystems in Schaltungs- und Systemsimulatoren werden jedoch Verhaltensmodelle aller Komponenten benötigt, die bei hinreichender Genauigkeit eine schnelle Berechnung ...

Simulation of conventional and induced-charge electroosmotic flows

Schonfeld, F.1, Hardt, S.2
1 Institut für Mikrotechnik Mainz GmbH
2 Darmstadt University of Technology

The fluidic motion driven by Coulomb forces on charge clouds in the vicinity of charged walls immersed into an electrolyte is termed electroosmotic flow (EOF). Since the generated EOF pressure increases with decreasing hydrodynamic diameter, such actuation mechanisms are ideally suited for microfluidic applications and are widely discussed in the literature (see e.g. Li 2004). In addition to ...

Multiphysics Modelling of Coating Process Technology

Alam, P., Toivakka, M.
Laboratory of Paper Coating and Converting, Åbo Akademi University, Turku, Finland

Multiphysics phenomena that occur when metering coating colours between paper and a composite polymeric-steel blade are simulated in this paper. The paper discusses modelling requirements for coating process technologies that have been fulfilled using the FEMLAB software, as well as requirements that still need to be modelled in order to accurately simulate the complex interdependent ...

Finite Elemente Methode an zwei Stromungsbeispielen

Vogel, H-H.
Institut für Fahrzeugbau Wolfsburg, Fachhochschule Braunschweig/Wolfenbüttel

Die Finite Elemente Methode des Programmes FEMLAB wurde an zwei bekannten Beispielen der Stromungsmechanik und Warmeubertragung gepruft, um die Anwendungsmoglichkeiten in der Heizungs- und Klimatechnik aufzuzeigen. Modellfluid war jeweils trockene Luft im Umge-bungszustand. Der experimentelle Widerstandsbeiwert einer Kugel, der eine Funktion von der Reynolds-Zahl Re ist, wird bei vorgegebener ...

Coupling FEMLAB and modeFRONTIER for Multiobjective Shape Optimization of Convective Wavy Channels

Pinto, F., Rizzetto, G., Nobile, E.
DINMA, Sezione di Fisica Tecnica, Università di Trieste, Trieste, ITALY

Convective wavy channels represent the building block of an ample variety of heat exchangers, and from an engineering point of view a desired target is to modify the shape of the channels in order to maximize their heat transfer rate, without an excessive penalty in their pressure losses. In this paper we describe how this has been achieved by coupling FEMLAB, a general purpose unstructured ...

Analysis and Modelling of a Low NOx “Swirl Burner”

Alecci, M., Cammarata, G., Petrone, G.
Università degli Studi di Catania, Dipartimento di Ingegneria Industriale e Meccanica, Catania, Italia

A three dimensional numerical simulation of the fluid dynamics of a swirling gas jet is proposed in this study. In the present paper we discuss a three-dimensional numerical simulation of a turbulent swirling jet entering a combustion reactor. Swirl effect is obtained by introducing the flow through a specific device (swirler) characterized by a series of guided deviatory vanes, able to ...

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