Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Electric Field Calculations for AC and DC Applications of Water Controlled Cable Termination - new

T. Karmokar[1], R. Pietsch[1]
[1]HIGHVOLT Prüftechnik Dresden GmbH, Dresden, Sachsen, Germany

The computation of electric field strength is the state-of-the-art technique for designing and optimizing High-Voltage (HV) equipment. In this research, the equipment under analysis is Cable Termination (CaTr) which is used to apply high-voltage (75 kV – 800 kV AC) on the cable to be tested (Figure 1). The CaTr is based on the principle of linear electric field control using deionised water with ...

Structural Analysis of the Advanced Divertor eXperiment's Proposed Vacuum Vessel

J. Doody [1], R. Vieira [1], B. LaBombard [1], R. Leccacorvi [1], J. Irby [1], R. Granetz [1]
[1] Plasma Science and Fusion Center - Massachusetts Institute of Technology, Cambridge, MA, USA

The goal of a tokamak is to use high magnetic fields to contain plasma and produce nuclear fusion that can be used for power generation. MIT’s Plasma Science Fusion Center (PSFC) and collaborators are proposing a machine, the Advanced Divertor eXperiment (ADX) to test new technology for these systems at reactor level heat fluxes and magnetic fields. COMSOL Multiphysics® software is used to ...

Remote Sensing of Electromagnetically Penetrable Objects: Landmine and IED Detection

R. Eze [1], G. Sivulka [2], ,
[1] City University of New York - LaGuardia Community College, Long Island City, NY, USA
[2] Regis High School, New York, NY, USA

The detection, characterization, and classification of underground environmental hazardous objects [mines, IEDs, and other unexploded military hardware] is a worldwide problem that needs urgent attention and solution. While electromagnetic sensor technologies have been applied to identify these hazards, increasingly low dielectric contrast between newer, sophisticated landmines, and complex ...

Ampacity Simulation of a High Voltage Cable Used in Offshore Wind Farms

E. Pelster[1]
[1]Wenger Engineering, Ulm, Germany

The ampacity of a cable depends on the cross section of its conductor. When selecting a cable design for a specific application it is of interest to choose the lowest possible conductor cross section in order to reduce material costs. Therefore an exact calculation of the ampacity is necessary (it is usually limited by the thermal resistance of the insulating cable materials). Commonly the ...

The Simulation of Electric Field Distribution in Electrospinning Process - new

Y. Zheng[1], B. Xin[2]
[1]Donghua University, Shanghai, China
[2]Shanghai University of Engineering Science, Shanghai, China

The electric field plays a very important role in the electrospinning process, which needs to be seriously considered in the electrospinning configuration developing. High voltage involved in electrospinning process leads to difficulty in measuring the electric field. Numerical simulation is used to design the electric field, and experiments are carried out to validate the spinneret and ...

Analysis of Stress-induced Pockels Effect in Silicon Waveguides

C. L. Manganelli [1], P. Pintus [1], C. Bonati [2], F. Di Pasquale [1]
[1] Scuola Superiore Sant'Anna, Pisa, Italy
[2] INFN - Sezione di Pisa, Pisa, Italy

The recently discovered Pockels effect in strained silicon has made silicon a promising candidate material for optical modulators and switches. In this work, we propose a model that links the electro-optic effect to the applied strain (in fact to the strain gradient). This model may be a big breakthrough in silicon photonic for the optimization of optical devices in the presence of future ...

Current Density Distribution for a Full Scale Industrial Alluminization Process

A. Giaccherini [1], S. Martinuzzi [2], E. Berretti [1], A. De Luca [3], A. Lavacchi [4], S. Caporali [2], M. Innocenti [3]
[1] Chemistry Department, University of Firenze, Firenze, Italy
[2] Consorzio INSTM, Firenze, Italy
[3] Chemistry Department, University of Firenze, Firenze, Italy
[4] Institute of Chemistry of Organometallic Compounds, CNR, Firenze, Italy

Respect to the previous approaches, in this communication the electrochemical and chemical kinetics as well as the transport phenomena, were modelled at very high level of theory, taking into account all the parameters affecting the galvanic process, including turbulent convection fields. In particular, we considered tertiary current distribution, chemical equilibria and turbulence models, such ...

Modeling the Electrical Parameters of a Loudspeaker Motor System with the AC/DC Module

M. Cobianchi [1], M. Rousseau [1], S. Xavier [1],
[1] B&W Group Ltd., Worthing, West Sussex, United Kingdom

The main purpose of a drive unit is to transform the electrical signal at its terminals into acoustic waves via two transduction mechanisms: electro-mechanical and mechano-acoustical. In this paper only the electro-mechanical transformation is discussed in view of a future optimization of the main electrical parameters for a loudspeaker motor: the Force Factor (Bl) and the Blocked Impedance (Zb) ...

Experimental Validation of Induction Heating of MS Tube for Elevated Temperature NDT Application

B. Patidar [1],
[1] Bhabha Atomic Research Centre, Mumbai India

Induction heating is multiphysics process, which includes electromagnetic induction and heat transfer. Both the physics are nonlinearly coupled with each other. In this paper, mathematical modeling of induction heating of MS tube for elevated temperature NDT application is presented. Mathematical modeling of electromagnetic field is done by using magnetic vector potential formulation. Heat ...

Plasmonic Scattering Structures for Improved Performance of Thin Film Solar Cells

M. Vijayalakshmi [1], R. Divya [1], R. C. Thiagarajan [1],
[1] ATOA Scientific Technologies Pvt. Ltd., Bangalore, India

Solar Photovoltaics is an alternate green energy source to the depleting fossil fuel technologies. Solar energy cost needs to be reduced significantly for competitiveness and proliferation in residential solar. Thin film photovoltaics is a promising technology for the growth of solar industry. In this paper, nano scale plasmonic structures are explored for performance improvement. These ...