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 ...
A. Michau, F. Silva, K. Hassouni, and A. Gicquel
Laboratoire d’Ingénierie des Matériaux et des Hautes Pressions, Villetaneuse
A reduced equivalent plasma model is proposed for thermal dissociation of molecular hydrogen, which allows a detailed description of atomic hydrogen recombination. This model, implemented with COMSOL Multiphysics, also accounts for surface temperature and thermal exchange on cavity walls. A self-consistent model previously developed in our laboratory has enabled us to determine that, at ...
J.M. Cormier, F. Ouni, and A. Khacef
Gliding discharges at atmospheric pressure were investigated in the GREMI laboratory for different applications such as syngas production from methane steam reforming. In our case, the kinetics could be described by using a simplified second order model in which the rate reaction coefficient is obtained from a linearization of parameters. Calculated and experimental data are presented ...
B. Longuet[1,2], J.M. Pascaud, and P. Gillard
 Laboratoire Energétique Explosions et Structures, Université d’Orléans
 DGA/ETBS, Bouges
In this paper, we model the thermal decomposition of an energetic materiel inside a vessel located in the furnace of a thermal gravimetric apparatus. As a case study, we treat the case with ammonium perchlorate single particles.
Using COMSOL for Studying the Occurrence of a Constant-shaped Concentration Front in the Retention of Gaseous Pollutants by Adsorption Columns
A. Joly, V. Volpert, and A. Perrard
 Université de Lyon
 Institut de Recherches sur la Catalyse, Lyon
Various models, based on mass transfer and different isothermal adsorption equilibrium laws, are developed using COMSOL Multiphysics. These isotherms are representative of the adsorption of various pollutant-adsorbent systems frequently found in decontamination processes. Consequences on breakthrough curves are examined and possible applications to decontamination processes are discussed.
LAAS, Groupe M2D, Paris
La présentation repose sur l’analyse de l’influence de la rugosité du diélectrique sur la capacité à l’état bas.
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.
G. Debenest, and M. Quintard
Institut de Mécanique des Fluides de Toulouse
Flows in highly heterogeneous media are found in many practical fields, such as hydrology, petroleum engineering, and chemical engineering. The case of two-region heterogeneous media (fractured media, catalytic beds, etc.) plays a fundamental role. The different questions associated to this specific case are illustrated in this paper for two different kinds of transport: (i) flow of a slightly ...
Numerical Simulation of Moving Boundary Problems with the ALE Method: Validation in the Case of a Free Surface and a Moving Solidification Front
Université de Bretagne Sud
This work investigates numerical simulations of problems involving moving boundaries. The first case concerns the simulation of incompressible Newtonian fluid flow problems with free surfaces in the presence of surface tension (the sloshing problem). The second case deals with a problem of heat transfer in the presence of an advancing solidification front (the Stefan problem).
Modeling the Coupled Mass Transfer Phenomena During Osmotic Dehydration of Fresh and Frozen Mango Tissues
J. Floury, Q.T. Pham, and A. Le Bail
 UMR STLO–INRA–Agrocampus
 School of Chemical Engineering and Industrial Chemistry, UNSW
 UMR CNRS GEPEA–ENITIAA, Nantes
In this paper, we present a mathematical model for simulating the mass transfer, during the osmotic dehydration of mango cubes. The mass balance equation for the transport of each constituent is established separately for intracellular and extracellular volumes but accounts for the mass exchange across the cell membrane and the shrinkage of whole tissue.