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.

Microwave Heating at the Grain Level

S. Lefeuvre[1], and O. Gomonova[2]
[1]Eurl Creawave, Toulouse, France
[2]Siberian State Aerospace University, Krasnoyarsk, Russia

The microwave heating and processing of heterogeneous material is usually simulated using a set of coupled PDE equations in an homogeneous medium. Nowadays it is possible to describe more accurately the process with a suitable description of the heterogeneities that is at the grain level. Many authors work with spheres (circles) to represent the grains but it is difficult to achieve an ...

Air Flow Characteristics Inside an Industrial Wood Pallet Drying Kiln

A-G. Ghiaus, M-A. Istrate, and A-M. Georgescu
Technical University of Civil Egineering, Bucharest, Romania

Analysis and optimization of air flow distribution inside drying kiln systems contribute to the improvement of the final product quality. The present study reports on the threedimensional numerical solution of air flow within a drying kiln enclosure. The air flow field is examined in different configurations and operation conditions. Depending on the off/on switched fans, we obtain various air ...

Solid Target Cooling for High Power Neutrino Super Beam

B. Lepers, and C. Bobeth
IPHC, CNRS, Strasbourg, France

The feasibility of water cooling is investigated for a solid target which is integrated as the inner conductor in a magnetic horn for secondary particle focusing (pi; K) as used in conventional neutrino beam accelerator experiment. A simple axi-symmetric thermal model calculated in COMSOL is used to obtain the temperature distribution inside the target for different values of h; power beam and ...

Thermal FEM Simulation Of A Multilevel Lab On Chip Device For Genetic Analysis

E. Giuri, A. Ricci, and S.L. Marasso
Politecnico di Torino, Materials Science and Chemical Engineering Department, Turin, Italy

In this work, time dependent thermal analyses, performed on the 3D FE model of a multilevel Lab on Chip (LOC) platform are executed in order to gain insight into the temperature distribution within the device. By means of the COMSOL Multiphysics CAD import module, an extremely close 3D reproduction of the actual device, allowing to probe temperatures in those regions where an experimental ...

Space Charge Compensation of Negative Ion Beams

M.Cavenago[1], and P. Veltri[2]
[1]INFN-LNL, Legnaro, PD, Italy
[2]Consorzio RFX, Padova, Italy

Neutral Beam Injectors for ITER require development of negative ion sources and beams with carefully reduced beam divergence. In the accelerator this is compensated by the focusing due to the fringe effect of the electric field, while in the drift region, where the beam is propagating without further acceleration, a background positive charge is required to assure beam transmission with small ...

Optimisation Of Filament Geometry For Gas Sensor Application

S. Gidon, M. Brun, and S. Nicoletti
CEA Minatec, Optronic Department, Grenoble, France

Monitoring of indoor CO2 concentration is of particular interest to detect room occupancy in order to optimise power consumptions of building. One technological approach is to use optical detection using specific absorption lines of CO2 molecules in the infrared domain close to 4.2 μm. Key features for a wider use in public and private buildings are power consumption and price. Such optical ...

Simulation of Interaction of Low-Temperature Plasma with Immersed Solids

V. Hrubý, and R. Hrach
Department of Surface and Plasma Science, Charles University, Prague, Czech Republic

The computer simulation with COMSOL Multiphysics has become a widely used technique for the study of various problems in the field of plasma physics. Despite the increasing performance of computers, fully three-dimensional particle simulations still have got extremely high demands on hardware and computer time. Although many problems could be solved by fluid models, results obtained by these ...

Ultrasound Piezo-Disk Transducer Model For Material Parameter Optimization

L. Spicci, and M. Cati
Esaote SpA, Florence, Italy

The technology involved in high performance ultrasound imaging probes needs a reliable model to help in new projects development and performance simulations. To achieve a useful model, it is necessary to use correct values for all material parameters involved in the electro-acoustical performances of the piezoelectric material, but unfortunately some of these parameters are known only with high ...

Modeling of Laser Processing For Advanced Silicon Solar Cells

G. Poulain[1], D. Blanc[1], A. Kaminski[1], B. Semmache[2], and M. Lemiti[1]
[1]Université de Lyon: Institut des Nanotechnologies de Lyon INL, CNRS, INSA de Lyon, Villeurbanne, France
[2]SEMCO Eng., Montpellier Cedex 5 - France

Silicon solar cells still require cost reduction and improved efficiency to become more competitive. New architectures can provide a significant increase in efficiency, but today most of the approaches need additional processing steps. In this context, laser processing offers a unique way to replace technological steps like photolithography that is not compatible with the requirements of the ...

Numerical Study of a High Temperature Latent Heat Storage (200-300oC) Using Eutectic Nitrate Salt of Sodium Nitrate and Potassium Nitrate

C.W. Foong, J.E. Hustad, J. Løvseth, and O.J. Nydal
Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway

In this study, a small scale direct solar thermal energy storage system with secondary reflector is designed and developed. The main advantage of thermal energy storage is that cooking can be carried out during the time when there is little or no sun shine. In addition, no heat transport fluid is needed in this system. A well insulated heat storage should keep the heat for about 24 hours. KNO3 ...

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