Presentazioni e Articoli Tecnici

In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Prediction of the Transmitted Light Through a Nano-Aperture of SNOM Probes

G. Louarn, S. Taleb, and S. Cuenot
Institut des Matériaux Jean Rouxel, Nantes

The knowledge of the light propagation through a nanometer-size aperture is crucial for Scanning Optical Near Field Microscopy (SNOM). In this work, we address a numerical study of the transmitted electric field through a SNOM probe. The influence of the wavelength is also studied. Our results show that the logarithmic power decreases linearly as a function of the aperture size, and the ...

Modeling of Different Shaped Micro-Cantilevers Used as Chemical Sensors

G. Louarn, M. Collet, and S. Cuenot
Institut des Matériaux Jean Rouxel, Nantes

In this work, we present the modeling of V-shaped silicon micro-cantilevers. The sensitivity of different V-shaped silicon cantilevers is estimated, as a function of the geometrical dimensions of the cantilever.

Elastic and Poro-Elastic Models of Ventricular Dilatation in Hydrocephalus

S. Momjian[1], and D. Bichsel[2]
[1] Hôpitaux Universitaires de Genève, Switzerland
[2] HESSO Ecole d’Ingénieurs de Genève, Switzerland

Elastic and poro-elastic models of ventricular dilatation in hydrocephalus are presented in this paper. An important result was the accumulation of fluid capping the horns of the ventricles. This indicates the importance of interstitial fluid in calculating of the deformation of the brain.

Propagation of Crevice Corrosion by Numerical Modelling

A. Proust[1], G. Girardin[1], B. Vuillemin[2], P. Combrade[1], and R. Oltra[2]
[1] AREVA NP - Centre Technique - Département Corrosion-Chimie, Le Creusot
[2] Université de Bourgogne - Laboratoire de Recherche sur la Réactivité des Solides

The most common case of crevice corrosion occurs on passive materials such as stainless steels, in oxidizing-chloride environments. A flexible crevice propagation model has been developed to allow parametric studies of the solution. Our main results allow us to establish diagrams of stability of solid and gas phases within the crevice and to evaluate the influence of the external ...

Multiphysics Modelling of an Electromagnetic Horn Dedicated to a Neutrino Superbeam Facility

F. Osswald, and G. Gaudiot
IPHC, Univ. Louis Pasteur, Strasbourg

This paper presents thermo-mechanical and electromagnetic computational results in the time-harmonic and transient domains. This includes the stress analysis induced by the magnetic field and resulting pressure, the Joule heating with skin effects and the corresponding deformation.

Low Frequency Electromagnetic Wave Propagation in Large Cavities, Study of the Cavity of Titan after the Cassini-Huygens Mission

F. Simões, and M. Hamelin
CETP/IPSL-CNRS 4, Saint Maur, France

The propagation of low frequency electromagnetic waves in the cavity of celestial bopdies with ionospheres has been studied, namely for inferring thunderstorm and lightning activity. The measurement of resonant states provides useful information for the analysis of the electric environment in the cavity. We present a 3D finite element model of the cavity, compute the lowest eigenfrequencies ...

Heat Transfer Models for Microwave Thawing Applications

S. Curet, O. Rouaud, and L. Boillereaux

This study deals with numerical and experimental investigations of a microwave thawing process. The microwave power generation is calculated from Maxwell’s equations and then from Lambert’s law, using COMSOL Multiphysics. For those two different approaches, the heat source term depends on the dielectric properties of the material. Numerical simulations are compared with experimental ...

Multiphysics Simulations of Tunneling Current Modulation using Ultra-Thin Membranes Micromachined on SOI

B. Bercu, L. Montès, G. Bacles, J. Zimmermann, and P. Morfouli
Institute of Microelectronics, Electromagnetism and Photonics, Grenoble

In this paper, we study a novel type of NEMS - tunnel junctions mounted on thin membranes. Mechanical stress applied to the junction induces changes in the height and length of the barrier, allowing the modulation of the tunnelling current.

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