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.

Calculation of the Magnetic Field Intensity in a Rectangular Conductor Carrying Current in Electromagnetism Introductory Courses

J.C. Olivares-Galvan[1], I. Hernandez[2] , P.S. Georgilakis[3], and L.E. Campero[1]

[1]Universidad Autónoma Metropolitana, Azcapotzalco, Mexico, D.F.
[2]Centro de Investigacion y de Estudios Avanzados del IPN, Unidad Guadalajara, Guadalajara, Jalisco, Mexico
[3]School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece

This paper describes a type of didactic material used when teaching electromagnetism. The purpose is to guide the students to verify the results of a Finite Element (FE) simulation using those obtained analytically. This procedure has shown to be of great help during their learning of the FE method. The example in this paper uses a 2D analytical method to estimate the magnetic field generated by ...

Fast Computation of Capacitance Matrix and Potential Distribution for Multiconductor in Non-Homogenous Multilayered Dielectric Media

S.M. Musa[1], and M.N.O. Sadiku[1]

[1]Prairie View A&M University Networking Academy, Prairie View, Texas, USA

This paper presents the fast computational and modeling of multiconductor transmission lines interconnect in non-homogenous multilayered dielectric media using the finite element method (FEM). We illustrate the potential distribution of the multiconductor transmission lines for the models and their solution time. We compared some of our results of computing the capacitance matrix with method of ...

Using a Linux Cluster for Parallel Simulations of an Active Magnetic Regenerator Refrigerator

T.F. Petersen, N. Pryds, and A. Smith
Risø National Laboratory, Fuel Cells and Solid State Chemistry Department, Roskilde

The Magnetic Refrigerator (MR) is a special type of refrigerator with potential to reduce the energy consumption of household refrigeration by a factor of two or more. To conduct numerical analysis of an experimental MR, a mathematical model was developed. The model solves the coupled Navier-Stokes and heat transfer equations which describe the physical phenomenon occurring within the MR. To ...

Taking COMSOL Multiphysics Beyond Traditional Finite Elements

John Dunec
COMSOL Inc.
Palo Alto, USA

This talk will give you some tips and tricks for using techniques in COMSOL Multiphysics that you might not have known about. --------------------------------- Keynote speaker's biography: John Dunec received his Ph.D. from Stanford, specializing in numerical simulation of thermal-fluid systems. He has over two decades of experience in the field: first as a product engineer and manager at ...

Thermo-fluid-dynamic evaluation of a microsystem to analyse radioactive solutions

G. Janssens-Maenhout
Joint Research Centre Ispra
Ispra, Italy

It has become common place to use micro-electromechanical systems (MEMS) to evaluate the chemical properties of solutions. However, such microchips have not yet been applied to the analysis of radioactive solutions, for the purpose of nuclear safeguards, in the nuclear reprocessing industry. Implementing MEMS in this area results in a reduced volume of the sample to be analysed. This has many ...

The pianistic touch: FEMLAB modeling of a grand piano action

Riccardo Ferrari
University of Trieste
Trieste, Italy

In this presentation we will show how to partially model a grand piano action. Then we will apply different touches to this virtual action and try to hear any difference. --------------------------------- Riccardo Ferrari was one of the keynote speakers at the COMSOL User's Conference, fall 2005 in Milano

Modelling Nutrient Transport in a Hollow-Fiber Membrane Bioreactor with Considerating the sub-Cellular Scale Mass Transfer

N. S. Abdullah1, D. B. Das2, and D. R. Jones1
1Department of Engineering Science, University of Oxford, Oxford, UK
2Department of Chemical Engineering, Loughborough University, Leicestershire, UK

Current bone tissue engineering protocols allow ex vivo growth of soft bone tissues in bioreactors. Recent experimental studies suggest that hollow fiber membrane bioreactors (HFMBs) may be used for growing 3-dimensional, clinically viable bone tissues. In order to facilitate the design of the HFMB for growing bone tissues, it is necessary to elucidate the quantitative relationships between cell ...

Convective Movements in an Electrolyser

B. Morel1, P. Namy2, C. Belhomme1, and I. Crassous3
1Comurhex, Pierrelatte, France
2SIMTEC, Grenoble, France
3LI2C, Paris, France

Modeling electrolysers is a challenge because of the strong coupling between electrical, thermal and CFD equations. Indeed the electrical conductivity of the electrolyte varies with the temperature, which in turn depends on the heat dissipated by the Joule effect and anode over-voltage.In the present study, the fluid velocity values are computed near the electrodes using a diphasic level set ...

Numerical Simulation of the Heat Transfer to Suspensions of Microencapsulated Phase Change Material (MEPCM)

F. Dammel, and P. Stephan
Technische Universität, Darmstadt, Darmstadt, Germany

The addition of microencapsulated phase change material particles can improve the characteristics of a heat transfer fluid. The numerical simulation of the heat transfer to such MEPCM suspensions with COMSOL Multiphysics is the subject of this contribution. The suspensions are treated as homogeneous liquids with appropriate models for viscosity, thermal conductivity and, most important, specific ...

Software Simulation of Electromagnetic Fields for Wood-Based Material Property Evaluation

X. Liu1, J. Zhang1, P. H. Steele1, and J. P. Donohoe2
1Dept. of Forest Products, Mississippi State University, MS, USA
2Dept. of Electrical & Computer Engineering, Mississippi State University, MS, USA

A technique based on the interaction of electromagnetic (EM) fields with the dielectric material is used for the non-destructive evaluation of wood-based material properties. An understanding of how the electromagnetic field is affected by the wood properties is necessary in order to optimize the system performance based on the frequency of the EM field. The COMSOL Multiphysics software package ...

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