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.

A Numerical Investigation on Active Chilled Beams for Indoor Air Conditioning

G. Cammarata, and G. Petrone
Department of Industrial and Mechanical Engineering, University of Catania, Catania, Italy

In this study fluid-dynamical and thermal performance of active chilled beams is investigated by 2D and 3D modelling in COMSOL Multiphysics. Three different typologies of those air conditioning systems are considered. Results, obtained for typical range of variation of operational conditions, are principally produced as temperature and velocity distributions. Special attention is paid to the ...

Three-Dimensional Simulation of Signal Generation in Wide-Bandgap Semiconductor Radiation Detectors

J. E. Toney[1]
[1]Pennsylvania State University Electro-Optics Center, Freeport, Pennsylvania, USA

We demonstrate the use of Comsol Multiphysics with Matlab to model signal generation in wide-bandgap semiconductor radiation detectors. A quasi-hemispherical detector design is compared with a simple, planar detector. Results show that the quasi-hemispherical design can simply and effectively compensate for the poor hole transport of most compound semiconductor materials.

The Effect of Electrochemical Micro-Milling by Rotating Magnetic Field

H-Y. Shen[1], H-P. Tsui[1], J-C .Hung[1], S-Y. Lin[2], and B-H. Yan[2]
[1]Metal Industries Research and Development Centre, Taichung, Taiwan
[2]National Central University, Chungli, Taiwan

In this work, the process of micro-channels in electrochemical micro-milling by using rotating magnet assisted helical tool is presented. The results show helical tool and Lorentz force of the rotating magnetic field that enhance the renewal of the electrolyte and machining efficiency. The feed rate can be raised under the magnetic field assisted in terms of experimental results; moreover, the ...

Determination of Electric Potential Distribution and Cell Resistance of a Uranium Electrorefining Cell

S.P. Ruhela, S. Agarwal, B. Muralidharan, B.K. Sharma, B.P. Reddy, G. Ravisankar, K. Nagarajan, C.A. Babu, and P. Kalyanasundaram
Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India

Electrorefining is an electrolytic process for obtaining high purity metal. In this process the impure metal is made anode and the high purity metal is deposited on cathode. Electrorefining is a key step in pyrochemical reprocessing of spent fuel from metal fuel fast reactors. Development of an electrorefining cell, in which processing of 10 kg of simulated spent fuel will be demonstrated, is ...

Detection of E.coli Cell using Capacitance Modulation

A.K. Dwivedi, R.M. Patrikar, R.B. Deshmukh, and G. Pendharkar
Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India

Testing and verification is very important to increase reliability of a system. In water analysis its purity is verified using different test methods. Biosensors are very useful to detect the microorganisms present in water. This paper presents a method to detect E.coli bacteria in water depending upon the capacitance modulation in the presence and absence of E.coli cell, which is simulated in ...

Finite Element Analysis of Multilayer Transmission Lines for High-Speed Digital Interconnects

S.M. Musa, and M.N.O. Sadiku
Prairie View A&M University, Prairie View, TX, USA

In this paper, we consider the finite element modeling of multilayer transmission lines for high-speed digital interconnects. Using COMSOL we mainly focused on the modeling of the transmission structures with both cases of symmetric and asymmetric geometries. We specifically designed asymmetric coupled microstrips and four-line symmetric coupled microstrips with a two-layer substrate. We ...

A Biological Gear in the Human Middle Ear

H. Cai, R.P. Jackson, C. Steele, and S. Puria
Stanford University, Stanford, CA, USA

To support high frequency transmission, the mammalian middle ear construction is unique. The middle ear bones are connected through two mobile joints, the malleus-incus joint (MIJ) and the incudostapedial joint (ISJ). These synovial joints, consisting of joint capsule and synovial fluid inside, play an important role in sound transmission. We developed our current FE model using COMSOL that ...

Hydro-Mechanical Modelling of a Shaft Seal in a Deep Geological Repository

D. Priyanto
Atomic Energy of Canada Limited, Pinawa, MB, Canada

The hydro-mechanical (HM) numerical simulation of a shaft seal installed at a fracture zone in a hypothetical host rock using COMSOL is presented. Two different stages are considered in the numerical modelling. Stage 1 simulates the groundwater flow into an open shaft. Stage 2 simulates the groundwater flow after installation of shaft sealing-components. The shaft sealing components include: ...

Upgrading the HFIR Thermal-Hydraulic Legacy Code Using COMSOL

I.T. Bodey[1], R.V. Arimilli[1], and J.D. Freels [2]
[1]The University of Tennessee, Knoxville, TN, USA,
[2]Oak Ridge National Laboratory, Oak Ridge, TN, USA

Modernization of the High Flux Isotope Reactor (HFIR) thermal-hydraulic (TH) design and safety analysis capability is an important step in preparation for the conversion of the HFIR core from a high enriched Uranium (HEU) fuel to a low enriched Uranium (LEU) fuel. Currently, an important part of the HFIR TH analysis is based on the legacy Steady State Heat Transfer Code (SSHTC). The SSHTC is a ...

Acoustic streaming flows in discharge lighting

T. Dreeben
Osram Sylvania, Beverly, MA, USA

Thomas Dreeben received his B.A. in Philosophy and Mathematics in 1985, and his Ph.D. in Mechanical Engineering in 1997, both from Cornell University. He has worked in automotive fuel systems at Ford Motor Company, and in turbulence at Sandia National Laboratories. He currently works in lighting research at OSRAM SYLVANIA, where his modeling focuses on fluid mechanics and heat transfer as they ...

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