S. Pietrzyk, F. Dhainaut, A. Khodakov, and P. Granger
Université de Lille
In this paper, we present the modeling of catalytic reactions under non-steadystate conditions. Particularly, we study the Fisher-Tropsch reaction in a pulse reactor.
Implementation of a Multi-Axial Pseudoelastic Model to Predict the Dynamic Behavior of Shape Memory Alloys
F. Thiebaud, M. Collet, E. Foltête, and C. Lexcellent
Institut FEMTO-ST, Besancon
Shape Memory Alloys are good candidates for being used as passive dampers, strain sensors, stiffness or shape drivers. In order to develop the use of these alloys in structural vibration control, we present in this paper how to implement a phenomenological model based on the Rl model in COMSOL Multiphysics. We use this implementation to simulate internal loops in order to characterize the ...
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 ...
S. Momjian, and D. Bichsel
 Hôpitaux Universitaires de Genève, Switzerland
 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.
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.
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 ...
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.
D. Peyrard, Ph. Vervier, S. Sauvage, J.M. Sánchez-Pérez, and M. Quintard
 Laboratoire d’Ecologie des Hydrosystèmes, Toulouse
 Institut de Mécanique des Fluides de Toulouse
The hyporheic zone is defined as an area where water and matter exchange through the sand, gravel, sediments and other permeable soils under and beside streams. Its impact on the hydro-system function is determined by the proportion of subsurface biogeochemical reactions and the fluxes of water exchanging with the hyporheic zone and flowing through the porous sediments. The objective of our ...
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.
S. Bourbigot, M. Jimenez, and S. Duquesne
Laboratoire Procédés d’Elaboration des Revêtements Fonctionnels, Ecole Nationale Supérieure de Chimie de Lille, Lille
In this paper, different approaches for modeling heat transfer in materials are examined: Heat anisotropy in styreneacrylonitrile copolymer provided by the nanodispersion and the orientation of single wall carbon nanotubes Heat protection of aluminum plate using nonwoven material made with high performance fibers Fire protection using intumescent paint on steel plate. It is shown that ...