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.

Application of System Identification Methods to Implement COMSOL Models into External Simulation Environments

A.W.M. van Schijndel[1] and M. Gontikaki[1]

[1]Eindhoven University of Technology, Eindhoven, The Netherlands

Full coupling of distributed parameter models, like COMSOL, with the lumped models often lead to very time-consuming simulation duration times. In order to improve the speed of the simulations, the idea of using system identification methods to implement the distributed parameters models of COMSOL into external simulation environments, is explored. It is concluded that the system identification ...

Underground Coal Fire Extinction Model Using Coupled Reactive Heat and Mass Transfer Model in Porous Media

S. Suhendra[1], M. Schmidt[1], and U. Krause[1]
[1]Laboratory II.2: “Flammable Bulk Materials and Dusts, Solid Fuels”, Federal Institute for Materials Research and Testing (BAM), Berlin, Germany

Green house gases emission associated with natural hazard of underground coal seam fire has been recognized as a worldwide problem leading to global warming threat. Therefore, in this paper a model to study underground coal fire is presented and the results will be devoted to strategic development of coal fire extinction technology within the framework of Sino-German Coal Fire Research ...

Analysis of Cell Deformation with FEMLAB

El-Khatib, N.1, Huc, N.2, Goldberg, Y.3, Cedex Martiel, J.L.1
1 TIMC Laboratory, UMR CNRS 5525, Faculty of Medicine, La Tronche
2 COMSOL, Grenoble
3 INSERM EMI 01-08, Grenoble University Hospital, Grenoble

We present a simplified model of biological cells including a first layer, corresponding to the membrane and the actin cortex and a second one, representing the cell cytoplasm. The membraneactin ensemble is governed by the Navier equations while the cytoplasm is assimilated to a viscous fluid, described by the Navier-Stokes system. At the inner boundary, between the cortex and the cytoplasm, ...

COMSOL Multiphysics' Utility in a Medical Device Company: Research and Development

Kalafut, J.F.
MEDRAD Innovations, One MEDRAD Drive, Indianola

This talk will highlight, through several case studies, COMSOL Multiphysics' utility as a design tool, system analysis tool, and an aid in applied research throughout MEDRAD's product development cycle (the integrated-Product Development Process™), from applied research to product validation. Specific examples shall include the analysis of a shielding design to prevent spurious interference ...

Finite Element Simulation of the Oscillatory Flow in a Channel with the Heat Transfer through a Hot Bump

Lee, Y.
Dep. of Engineering Sciences, Embry-Riddle Aeronautical University

The present numerical simulation investigates the time-dependent flow driven by the oscillatory pressure gradient in the streamwise direction. An attempt was made to obtain the flow field that is initially stationary and evolves to the purely oscillatory flow with zero mean velocity, and the results after several cycles of oscillation are compared with the long-time analytical solution in the ...

Sensor Modeling for an Electrical Capacitance Tomography System Applied to Oil Industry

Flores, N., Gamio, J.C., Ortiz-Alemán, C., Damián, E.
Instituto Mexicano del Petróleo, México, D.F., México

Multiphase flow characterization is an important task for monitoring, measuring or controlling industrial processes. This can be done by means of process tomography. One category of process tomography, is electrical capacitance tomography (ECT), where the cross section to be imaged is surrounded by a set of capacitance electrodes formed from simple metal plates. This paper presents the ...

3-D Multiphysics Modeling of a Producing Hydrocarbon Field

McKenna, J.R.1, Blackwell, D.D.2
1 U.S. Army Engineer Research & Development Center, Geotechnical & Structures Laboratory, Vicksburg, Mississippi
2 Department of Geological Sciences, Southern Methodist University, Dallas, Texas

Thermal anomalies indicating elevated temperatures often are present in producing hydrocarbon fields. This paper discusses precision temperature logs obtained over a salt dome in the Bayou Bleu hydrocarbon field in southwest Lousiana, and presents a 3-D thermal-fluid model of the dome constrained by these types of logs. The numerical model in which both an enhanced thermal conductivity ...

Erdwärmenutzung im Eisenbahntunnelbau – Simulation und Wirtschaftlichkeitsberechnung

Oberhauser, A.1, Adam, D.2
1 Wissenschaftlicher Mitarbeiter am Institut für Eisenbahnwesen, Verkehrswirtschaft und Seilbahnen, TU Wien, Wien
2 Ingenieurkonsulent für Bauingenieurwesen, Universitätsdozent am Institut für Grundbau und Bodenmechanik der TU Wien

The usage of geothermal heat by the means of railway infrastructure is a relatively new method to tap renewable energy sources. A research project at the Department of Railway Engineering, Transport Economics and Ropeways at Vienna University of Technology in cooperation with the Department of Soil Mechanics and Geotechnical Enginering and the Atlas Copco MAI Ltd. deals with the development of ...

Interactions Between the RF-field and a Stereotactic Frame during MRI, a 3D Study

Eriksson, O., Kjäll, P.
University of Uppsala, Sweden

Stereotactic frames are used during surgical interventions in order to localise and, with high accuracy and precision, help the surgeon to reach a target in the brain. By using an image modality, e.g. MRI or CT, the target can be localised and its coordinates determined prior to the surgery. Previous phenomenological and experimental studies of the Leksell® Coordinate Frame during 3T MRI ...

Simulatorkopplung mit FEMLAB

Clauß, C.1, Martin, R.1, Nordwig, A.2, Nytsch-Geusen, C.2, Schneider, A.1, Schwarz, P.1
1 Fraunhofer-Institut für Integrierte Schaltungen, Außenstelle EAS, Dresden
2 Fraunhofer-Institut für Rechnerarchitektur und Softwaretechnik, Berlin

Der Entwurf technischer Systeme erfordert oft das Zusammenwirken verschiedener physikalischer Domänen (Mechanik, Fluidik, Elektronik, ...) sowie die gemeinsame Betrachtung verschiedener Komponenten und Subsysteme (mechanischer Verformungskörper, elektronischer Regler, digitale Signalverarbeitung, ...). Für diese komplexen Aufgaben ist in vielen Fällen Simulatorkopplung unerläßlich. Es ...

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