S. Bechu, T. V. Tran, A. Lacoste, A. Bès, M. Rayar, and J. Pelletier
Laboratoire de Physique Subatomique et de Cosmologie Centre de Recherche Plasma, Matériaux-Nanostructures, Université J. Fourier, Grenoble, France
The simulation of plasma produced by a dipolar source requires a global, self consistent, modeling of its function. A first optimization of the dipolar source, magnetostatics, microwave propagation and fast electron trajectories (Particles in Cell (PIC) and Monte-Carlo hybrid method) have been performed with COMSOL Multiphysics and MATLAB.
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 ...
H. Neubert1, A. Kamusella1, and T. Q. Pham2
1Institute of Electromechanical and Electronic Design, Technische Universität Dresden, Dresden, Germany
2OptiY e.K., Aschaffenburg, Germany
The optimization of design parameters with regard to tolerances is an important reason for design processing. We used a COMSOL Multiphysics structural mechanics model with the OptiY tool for finding an optimized design of a thick film accelerometer conforming to our sensitivity and cross sensitivity requirements, including resonance frequency. We calculated the probability of a system failure due ...
R. Wislati, and H. Haase
Institut für Grundlagen der Elektrotechnik und Messtechnik, Leibniz Universität Hannover, Hannover, Germany
In this paper a 2-phase hybrid linear stepper motor (HLSM), also known as Sawyer linear motor, has been considered as a potential approach in Variable Valve Actuation (VVA) Systems for Internal Combustion Engines.Initially, the reluctance network approach (RNA) with lumped parameters has been used assuming an infinite permeability of the steel core. The results have then been compared with a ...
R. Wislati, and H. Haase,
Leibniz University of Hanover, Germany
In this paper a 2-phase hybrid linear stepper motor (HLSM), also known as Sawyer linear motor, has been considered as a potential approach in Variable Valve Actuation (VVA) Systems for Internal Combustion Engines. Initially, the reluctance network approach (RNA) with lumped parameters has been used assuming an infinite permeability of the steel core. The results have then been compared with a ...
RF MEMS Research Group
Eindhoven, The Netherlands
In this paper it is shown how the equivalent circuit parameters of a MEMS resonator can be simply obtained from an eigenfrequency simulation. Additionally, it is demonstrated that the Q-factor as a result of support losses in a MEMS resonator can be determined using a matched boundary layer. The method is applied to calculate the frequency dependent admittance of a diamond disk resonator. Results ...
Faculty of Safety Engineering, VSB-Technical University of Ostrava, Ostrava-Vyskovice, Czech Republic
The fire resistance of building structures is determined mostly by testing in an accredited laboratory. New findings have enabled the calculation of structural fire resistance. A progressive method of calculation of the fire resistance is also mentioned in the body of European standards. Calculation of the fire resistance demands determination of temperature distribution in the cross-section ...
G. Cammarata, M. Iacono, L. Cammarata, and G. Petrone
Department of Industrial and Mechanical Engineering, University of Catania, Catania, Italy
In this study, fluid-dynamics and thermal performance of active-chilled beams are investigated through 2D and 3D modeling in COMSOL Multiphysics. Three different typologies of air conditioning systems are considered. Results, obtained for typical ranges of variation in operational conditions, are principally produced as temperature and velocity distributions.Special attention is paid to the ...
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. ...
Energy Engineering Department, Università degli Studi di Firenze, Firenze, Italy
The natural ventilation of buildings provides improvement of internal comfort and air quality conditions leading to a significant reduction of the consumption of cooling energy. In the present paper the air flow patterns, velocity and air temperature distributions inside a historical building in Palermo (Italy), at present used as a library, were investigated by a 3D transient simulation using ...