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.

Modeling of High Temperature Crystal Growth Process

J-.M. Dedulle1,2, F. Mercier1, D. Chaussende1, and M. Pons3
1Laboratoire des Matériaux et du Génie Physique, Grenoble, France
2IRIS Technologies, Grenoble, France
3Science et Ingénierie des Matériaux et Procédés, Saint-Martin d'Hères, France

The main problem for the development of 3C-SiC electronics is the lack of an adapted bulk growth process.Indeed, sublimation, which is the classical process for the growth of 4H-SiC and 6H-SiC ingots, is not adapted for the 3C polytype because of the solid state transition from cubic to hexagonal crystals, which occurs at high temperature. We therefore choose growth from liquid phase rather than ...

Flow Modeling in a Flat Membrane Module

B. Balannec1, J. M. Gozálvez-Zafrilla2, D. Delaunay1, and M. Rabiller-Baudry1
1UMR - "Sciences Chimiques de Rennes", Université de Rennes, Rennes, France
2Departamento de Ingeniería Química y Nuclear, Universidad Politécnica de Valencia, Valencia, Spain

A CFD calculation of the complex three dimensional flow in a flat membrane module (Rayflow X100, Orelis- Novasep) was made under the conditions of a typical fouling study in order to compare velocity distribution to fouling deposit (with charcoal). The flow was turbulent in the inlet/outlet pipes of the module and laminar in the channel containing the membrane. The local Reynolds number was ...

Underpaint Corrosion Modelling

T. Machado Amorim, and C. Allély
ArcelorMittal Research and Development, Automotive Products Center, Maizières les Metz, France

Underpaint corrosion is one of the most important degradation modes for galvanized steel sheets employed in automotive and building industry. Simplified systems (metal coated with thin polymer layer) under corrosion situations have been studied in the past few years and it is now widely accepted that one of the mechanisms responsible for the paint disbonding is cathodic delamination. In this ...

FEM Analysis in Sensor Development - Siemens VDO

M. Sas, L. Bizon, and A. Krsjak
Siemens VDO Automotive, Frenstat, Czech Republic

When developing sensors with electrical output in automotive applications, different optimizations are taken into consideration; geometry shape, placement of the sensor, ambient conditions, chemical interaction, material composition, electrical components and their influence, accuracy, response and durability.These parameters and factors are designed, evaluated and simulated by proper CAD/CAE ...

Numerical Modeling of a Levitated Liquid in a Cold Crucible

R. Ernst, C. Garnier, P. Petitpas, and C. Trassy
SIMAP-EPM Laboratory (CNRS), Saint Martin d'Hères, France

The cold crucible is a useful tool for the elaboration of high purity materials by electromagnetic fields. The application areas range from titanium part elaboration, for the aeronautic industry or in medical prosthesis, to silicon purification for the photovoltaic industry. In this paper, the main results of a 3D electromagnetic model of a cold crucible from a former paper are briefly ...

On the Use of COMSOL Multiphysics to Understand and Optimize the Filling Phase in the Injection and Micro-Injection Molding Process

M. Moguedet1, P. Namy2, and Y. Béreaux3
1Pôle Européen de Plasturgie, Bellignat, France
2SIMTEC, Grenoble, France
3LAMCOS, Site de Plasturgie, INSA Lyon, Bellignat, France

The work presented here deals with the simulation of the cavity filling stage of the injection and micro-injection molding process for thermoplastic materials.COMSOL Multiphysics gives us the means to take into consideration some other aspects usually neglected in commercial 3D softwares dedicated to polymer processing. In particular, tracking of the flow front is based on a Level Set approach. ...

Modeling of Natural and Combined Natural-Marangoni Convection Flows in a Low Prandtl Number Material Filled in a Square Mold by using COMSOL

F. Mechighel1,2,3, M. El Ganaoui2, B. Pateyron2 and M. Kadja3
1Mechanical Engineering Department, Annaba University, Annaba, Algeria
2SPCTS Laboratory, Limoges University, Limoges, France
3Mechanical Engineering Department, Constantine University, Constantine, Algeria

In the present paper a problem with both natural and combined natural-Marangoni convection flow of materials (having small Prandtl numbers of 0.0128, 0.054 and 0.71, respectively) filled in an enclosure has been investigated by a numerical simulation using COMSOL. Solutions have been obtained for different values of the Rayleigh number. The generated flow under buoyancy and surface tension forces ...

Numerical Model for Transient Analysis of Multilayer Thin Films Irradiated by a Moving Laser Source

N. Bianco1, O. Manca2, and D. Ricci2
1Dipartimento di Energetica, Termofluidodinamica applicata e Condizionamenti ambientali, Università degli Studi di Napoli Federico II, Napoli, Italy
2Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Napoli, Italy

A two-dimensional transient analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure on a glass substrate by a moving Gaussian laser source is carried out numerically.The workpiece is considered semi-infinite along the motion direction and the optical and thermophysical properties are assumed to be temperature dependent. The optical field is considered locally ...

Mechanical Simulation of Electrical Wafer Sort using PAD Over Active Structures in 0.18μm Smart Power Technology

L. Cecchetto1, L. Zullino1, R. Vallauri1, A. Andreini1, L. Redaelli2, P. Anghilieri2, and R. Vettori2
1STMicroelectronics, Agrate Brianza, Italy
2Technoprobe, Agrate Brianza, Italy

The Electrical Wafer Sort (EWS) process is performed on all electronic devices at the end of the silicon diffusion steps to verify IC functionality. This process is performed by probing ICs with suitable tips on a flat metal surface (PAD).A mechanical simulation feasibility of EWS process is presented here. In most advanced technologies, in order to optimize the area consumption, PAD Over Active ...

Simulation of Salt Diffusion in a Pork (bacon) Side using 3D Imaging

R. Said1, R. B. Schüller2, P. Young3, A. Aastveit2, and B. Egelandsdal2
1Simpleware Ltd, Exeter, UK
2Norwegian University of Life Sciences, Ås, Norway
3University of Exeter, SECAM, Exeter, UK

Simulation of salt diffusion in a pork (bacon) side is a relatively complex task since such a piece often consists of different regions of skin, meat, fat and bone; each with diffusion coefficients that vary by orders of magnitude. Adding to this complexity is the arbitrary shape and topology of each region; separately and combined.This paper will present a comprehensive solution for constructing ...

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