Quick Search

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.

Dual Phononic And Photonic Band Gaps In A Periodic Array Of Pillars Deposited On A Membrane

Y. Pennec, Y. El Hassouani, C. Li, B.D. Rouhani, E.H. El Boudouti, H. Larabi, and A. Akjouj
Institut d’Electronique, de Microélectronique et de Nanotechnologie, Université de Lille, Villeneuve d’Ascq, France

Phononic crystals are a class of materials that exhibit periodic variations in their density and elastic properties. Such crystals modify the propagation of acoustic waves and prohibit the propagation of sound for frequencies within the band gap. We discuss the simultaneous existence of phononic and photonic band gaps in a periodic array of silicon pillars deposited on a homogeneous SiO2 ...

Features and Limitations of 2D Active Magnetic Levitation Systems Modeling in COMSOL Multiphysics

A. Piłat
AGH University of Science and Technology, Kraków, Poland

This elaboration presents the Active Magnetic Suspension (AMS) and radial Active Magnetic Bearing (AMB) as a representative of the Active Magnetic Levitation Systems (AMLS). The laboratory test rigs are analyzed in the 2D space. The control algorithm as well as the motion dynamics are implemented directly in COMSOL Multiphysics. The discussion on features and limitations is provided to show an ...

Modeling and Simulation of a Thermal Swing Adsorption Process for CO2 Capture and Recovery

M. Lei, C. Vallieres, G. Grevillot, and M.A. Latifi
LRGP - CNRS - ENSIC, Nancy, France

The present study deals with a twodimensional modeling and simulation of a thermal swing adsorption (TSA) process used for the capture of CO2 from CO2/N2 mixture. The models are described by partial differential equations (PDEs) including conservation equations, models for equation of state, equilibrium, thermodynamic and transport properties. The resulting models involve different unknown ...

2D Axial-Symmetric Model For Fluid Flow And Heat Transfer In The Melting And Resolidification Of A Vertical Cylinder

S. Morville[1], M. Carin[1], M. Muller[2], M. Gharbi[2], P. Peyre[2], D. Carron[1], P. Le Masson[1], and R. Fabro[2]
[1]Laboratoire LIMATB, Université de Bretagne Sud, Lorient , France
[2]Laboratoire PIMM, Arts et Métiers ParisTech, Paris, France

Laser direct deposition is a process, different from molding or machining, which allows the producing of fully densified and operational components. This technique involves injecting metal powder through a coaxial nozzle into a melt pool obtained by a moving laser beam. The final object is obtained by superimposing the layers created by the process. The roughness of the functional part is ...

Finite Element Analysis Of Permeation Tests On Articular Cartilage Under Different Testing Conditions Using COMSOL Multiphysics

G. Spatafora[1], and F. Boschetti[1][2]
[1]Structural Engineering Department, Politecnico di Milano, Milan, Italy
[2]IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

Articular cartilage is composed by a charged solid matrix (proteoglycan and collagen fibres) and an interstitial fluid phase. The permeability of articular cartilage is a function of compression load applied on the tissue, the solid matrix underwent a compaction that decreased its value for increasing deformation. The study of the permeability is very useful to understand the onset and ...

Using COMSOL Multiphysics in Eddy Current Non Destructive Testing Context

L. Santandrea, and Y. Le Bihan
Laboratoire de Génie Electrique de Paris, Gif-sur-Yvette, France

Eddy current testing (ECT) is widely used to check the integrity of electrically conducting parts and notably to detect flaws. It is based on the interaction between a probe and the part under testing. The finite element method (FEM) is well fitted to the modelling of these kinds of problems because of its large flexibility which allows to deal with complex probe and part configurations. In this ...

Two-Dimensional FEM Analysis Of Brillouin Gain Spectra In Acoustic Guiding And Acoustic Antiguiding Single Mode Optical Fibers

Y.S. Mamdem[4], X. Pheron[2], F.Taillade[3], Y. Jaouën[4], R. Gabet[4], V. Lanticq[1,3], G. Moreau[1], A. Boukenter[5], Y. Ouerdane[5], S. Lesoille[3], and J. Bertrand[2]
[1]EDF R&D, Chatou, France
[2]ANDRA, Chatenay-Malabry, France
[3]LCPC, Paris, France
[4]Telecom ParisTech, Paris, France
[5]Laboratoire Hubert Curien, Saint-Etienne, France

We present a full modal -analysis of optical and acoustic properties based on two-dimensional finite-element method (2D-FEM) for Brillouin Gain spectrum (BGS) determination in optical fibers with COMSOL. This model enables us to predict precisely the BGS of any kind of silica fiber knowing well the geometry of doping composition. The results of numerical modeling have shown good agreement in ...

Modelling Of Magnetoelectric Effects In Magnetostrictive/Piezoelectric Multi-Layers Using A Multiphysics Simulator

F. Rasoanoavy[1], V. Laur[1], R. Smaali[2], and P. Queffelec[1]
[1]University of Brest Lab-STICC, Brest, France
[2]Clermont Université, Université Blaise Pascal, Cleremeont-Ferrand, France

In this paper, we use COMSOL, finite element software, to compute the magnetodielectric effect in a multiferroic structure based on a {ferromagnetic /piezoelectric} multi-layer. We also investigate the potential tunable applications of such structures at microwave frequencies. In a first part, we present the piezoelectric and magnetostrictive equations which were then used to develop the global ...

Finite Element Approach for Optimizing the Cooling of the Metallic Bipolar plates for Fuel Cell Applications

E. Firat[1,2], C. Siegel[1,2], L. Kühnemann[1,2], P. Beckhaus[1], and A. Heinzel[1,2]
[1]Zentrum für Brennstoffzellentechnik (ZBT) GmbH, Duisburg, Germany
[2]University of Duisburg Essen, Duisburg, Germany

Metallic bipolar plates promise several advantages for fuel cell applications. On the other hand, cooling of these plates is a critical task regarding design optimization. The high thermal conductivity of the material and the complex geometry of these plates affect directly the cooling performance. To analyze this phenomenon, a 3D model is set-up and solved using a FEM (finite element method) ...

Simulation And Verification Of Thomson Actuator Systems

A. Bissal, G. Engdahl, E. Salinas, and M. Ohrstrom
ABB / KTH, Stockholm, Sweden

The Thomson coil’s (TC) inherent characteristics are appropriate to meet the needs of high speed actuators for mechanical switching devices in so-called smart grids. This is due to the massive forces that it can exert in the time scale of milliseconds. A coupled COMSOL Multiphysics model is developed in 2D involving spice circuits, Magneto-statics, and Moving Mesh Mode for predicting the motion ...