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.

Induction Heating of Samples in Vacuum Systems

A. Della Savia
SAES Getters Group, Lainate, Italy

Getter materials need to be activated in a vacuum system, where induction heating is one of the fastest processes. In this case, eddy currents generated by high frequency AC in a coil surrounding a bulb heat the materials.The temperature profile inside these items depends on geometry configurations, along with the coupling of the samples and material properties.In this article we analyze the ...

Numerical Simulation of a Dezincification Process Controlled by Electromagnetic Fields

S. Letout1, J. C. Tissier2 , G. Cognet1, Y. Fautrelle1, and Y. Du Terrail Couvat1
1SIMAP Laboratory (INPG-CNRS), Saint Martin d’Hères, France
2Ecole Centrale de Lille, Villeneuve D'Ascq, France

A parametric simulator for a dezincification process industrial device analysis has been developed. The device is built upon a COMSOL Multiphysics magneto-thermo-hydraulic coupled model in a cylindrical coordinate system.We study effects of electromagnetic forces on a cast iron load and consequently on Zn gas bubbles trajectories included in the metal.Trajectories are obtained according to mass ...

Multiphysics Modeling of Radio-Frequency Cooking

M. Rayner
Department of Food Technology, Engineering and Nutrition, Faculty of Engineering, Lund University, Lund, Sweden

A radio frequency-based cooking process for a meat product was modeled using the Heat Transfer Module. Included wasa term for internal heat generation as generated by Joule heating caused by an applied electric field. The dielectric and thermal properties were implemented as a function of temperature. The resulting simulation showed good agreement with experimental end point temperature data from ...

Modeling the Coupled Heat and Mass Transfer during Fires in Stored Biomass, Coal and Recycling Deposits

F. Ferrero, M. Malow, A. Berger, and U. Krause
Bundesanstalt für Materialforschung und prüfung (BAM), Berlin, Germany

In this paper, advances in the development of a numerical model for predicting the possibility of self-ignition in stored biomass, coal heaps or underground seams and dump deposits are presented. Results from the performed simulations are compared with experimental data. Finally, some conclusions and the possibilities for future work are drawn.

3-D Modeling of a Differential Impedance Obstacle Detection Sensor for Horizontal Directional Drilling Operations

J. N. Shah1, A. Jaganathan1, E. N. Allouche1, M. Kieba2, and C. J. Ziolkowski2
1Louisiana Tech University, Ruston, LA, USA
2Gas Technology Institute, Chicago, IL, USA

Horizontal Directional Drilling (HDD) is a commonly used technology for the installation of pipelines, conduits and cables in urban areas and across obstacles such as rivers, railways and freeways. A main concern in using the HDD method is the risk of hitting existing buried utilities during the boring process. The Differential Impedance Obstacle Detection (DIOD), developed by the Gas Technology ...

It Looked Great on Paper! - Use of COMSOL Multiphysics Software to Bridge the Gap between Hand Calculations and Experimental Results in Undergraduate Heat Transfer Education

K. K. Bhatia
Rowan University, Glassboro, NJ, USA

A project involving the design, building, and testing of a hot liquid thermos was implemented in a junior level mechanical engineering heat transfer class. COMSOL Multiphysics software was used to bridge the typical gap between hand calculations of heat transfer performance and experimental results. Student self-assessment survey results showed an overall positive feeling regarding the project.

A Finite Element Analysis of the Influence of Morphology on Barrier Properties of Polymer-Clay Nanocomposites

D. L. Statler Jr., and R. K. Gupta
Department of Chemical Engineering, West Virginia University, Morgantown, WV, USA

Nanocomposites, formed by dispersing a few weight-percent of nanometer-thick platelets of organically-coated montmorillonite clay in a variety of polymers, are being used in food packaging applications. The clay platelets reduce the diffusion coefficient of gases, such as carbon dioxide and water vapor, and prolong the shelf-life of packaged foods and carbonated beverages. Here we use the COMSOL ...

Wind Field Generation for an Urban Scale using COMSOL

H.-J. Jeong
Korea Atomic Energy Research Institute, Korea

This paper presents the application of the nesting method to wind fields on coarse grid to then produce a fine grid wind fields. This is done using COMSOL Multiphysics. Fine-grid wind fields, which are considered to be an urban structure, were useful in drawing scenarios for counter terrorist attacks.Also, it was confirmed that COMSOL Multiphysics could be easily applicable to multi-nesting to ...

A Numerical Approach to the Heat Transfer Studies inside the Human Eye

E. H. Ooi, and E. Ng Yin Kwee
School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore

In this presentation, abnormalities in the human eye are studied. The outline for the presentation is:Background of the ResearchModel DevelopmentSteady state solution of a normal eyeEffects of aqueous humor hydrodynamics on the temperature distribution inside the human eyeSummary

Modeling of Microstructures in Dissimilar Copper/Stainless Steel Electron Beam Welds

I.Tomashchuk, P. Sallaman, and J.-M. Jouvard
Institut Carnot de Bourgogne, Université de Bourgogne, Le Creusot, France

In the case of electron beam welding of copper with stainless steel, two principal cases of welding pool morphology are possible: a droplet-like microstructure where the electron beam deviates to the copper side due to the thermoelectric effect, so the volume of molten copper is much bigger than steel, and an emulsion-like microstructure, volumes of melted materials are closely equal. Reproducing ...

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