A. Freni, and F. Cipiti
CNR- Institute for Advanced Energy Technologies “Nicola Giordano”, Messina, Italy
In this paper, a 3D dynamic simulation for a portion of a metal hydride-based (LaNi5) hydrogen storage tank is presented. The model is based on heat and mass balances and considers coupled heat and mass transfer resistance through a non-uniform pressure and temperature sorbent bed. The governing equations were implemented and solved using the COMSOL Multiphysics software package. The simulation ...
Sz. Beleznai, I. Maros
Budapest University of Technology and Economics, Budapest, Hungary
General Electric Lighting, GE Hungary KFT, Budapest, Hungary
Two-dimensional plasma transport model was developed in COMSOL Multiphysics Plasma Module to investigate fundamental issues in ceramic metal halide (CMH) lamps starting using Ar/Hg penning gas mixture. The intent of this work is to provide insight into possible design rules that might be applied to the improvement of start-up in moderate pressure metal halide lamps. The model gives a complete ...
Numerical modeling of coupled heat and mass transport during frying and cooling of wood in contact with oil
Grenier, D.1, 2, Bohuon, P.1, 3, Baillière, H.1, Ben Lalli, A., Méot, J.M.1
1 CIRAD, Montpellier cedex, France
2 CTBA, Bordeaux cedex, France
3 ENSIA, 1101, Montpellier cedex, France
This paper proposes a model of coupled heat and mass (water, oil) transport in a porous medium (timber) soaked first in a hot oil bath, then in a cold oil bath. The timber is soaked at hot temperature to dry it (water vaporization, resulting in increased pressure and therefore vapor transport) and at cold temperature to treat it (vapor condensation, resulting in decreased pressure and oil ...
C. Hurt, P. Angelo, R. Pevey
Department of Nuclear Engineering, University of Tennessee, Knoxville, TN, USA
Y-12 National Security Complex, Safety Analysis Engineering, Oak Ridge, TN, USA
Simulation of criticality accident transients offers the ability to confirm understanding of critical configurations, bound accident scenarios and aid comprehensive emergency planning. Computational ability to recreate excursion power histories in fissile solution is sought due to the predominance of solutions in process criticality accidents. Applicable solution transient physics methodologies ...
Simulations of Scanning Electrochemical Microscopy Experiments in Pure Negative and Positive Feedback Mode with Ring Microelectrodes
J. Mauzeroll, M. Mayoral, and D. Fabre
Department of Chemistry, Université du Québec à Montréal, Montreal, Quebec, Canada
Scanning electrochemical microscopy (SECM) is a powerful tool recently developed for studying structures and processes in micrometer and submicrometer sized systems. It can probe electron, ion, and molecule transfers, and other reactions at solid-liquid, and liquid-liquid, interfaces . This versatility allows for the investigation of a wide variety of processes, from metal corrosion to metabolism ...
A. W. M. van Schijndel
Technische Universiteit Eindhoven, Eindhoven, Netherlands
The paper presents the modeling and simulation of 2D heat and moisture transport with and without air movement for a building construction. The research focuses on the effect of air movement through building constructions. Although the typical air movement inside building constructions is quite small (velocity is of order ~10-5 m/s), this research shows it might have much more impact on the ...
Caribbean Industrial Research Institute, Calibration Laboratory, University of the West Indies, St. Augustine, Trinidad and Tobago
The Polymer Electrolyte Membrane fuel cell is one of the most promising green technologies for addressing portable, as well as transportation power needs. However, the science behind the fuel cell, in many regards, is still an enigma, and even more so, with the vast numbers of novel materials created annually; designed to offset issues related to durability, conductivity, cost- effectiveness and ...
Bernard, T., Herrero Blanco, I., Peters, M.
Fraunhofer Institute for Information and Data Processing IITB, Business Unit Systems for Measurement, Control, and Diagnosis (MRD), Karlsruhe
Rheological forming processes of glass and plastics, where heat conduction, radiation and fluid dynamics are the main physical effects, are strongly nonlinear. The aim of this paper is to investigate a control design with the use of the spatially distributed model. As control methodology we investigate linear and nonlinear model predictive control (MPC, NMPC) schemes. These approaches are ...
J. Frassy, C. Lécot, C. Delattre, and A. Soucemarianadin
 LEGI UMR 5519, Grenoble
 LAMA UMR 5127, Le Bourget-du-Lac
 LETI, CEA Grenoble
We present simulations of drops spreading on heterogeneous surfaces. The droplet height is the solution of a time-dependent non-linear fourth order partial differential equation, which is solved using COMSOL Multiphysics. In the fully wetting case, we compare our results with experimental data and with previous results reported in the literature. The simulation results reveal how ...
S. Quiniou, F. Lesage , V. Ventenat, and M.A. Latifi
 Laboratoire des Sciences du Génie Chimique, Nancy
 Centre de recherche Décathlon, Villeneuve d’Ascq
In this paper, an investigation of heat and mass transfer in fabrics used in the manufacture of comfortable sportswear is presented. It is based on a model which is described by partial differential equations representing the mass balance of free and adsorbed water and vapour and the heat balance in the fabric. The model involves several unknown physical and transfer parameters. Two ...