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.
Palo Alto Research Center
In this presentation we present our analysis of the PARC Nanocalorimeter. Calorimetry is basically the measuring of heat of chemical reactions or physical changes. Nanocalorimetry is Calorimetry at the Nanometer scale. The PARC Nanocalorimeter is a special type of Calorimeter, it consists of arrays of Nanocalorimeters. The PARC Nanocalorimeter is intended to be used for screening biochemical ...
Naval Surface Warfare Center Crane Division, CRANE, IN, USA
A model of a horizontal atmospheric pressure chemical vapor deposition reactor was implemented to aid in the design of a laboratory based one. The model coupled momentum transport, energy transport, and mass transport phenomena to account for reacting fluid flow of a compressible gas in a heated chamber. The system modeled was silicon deposition from trichlorosilane in hydrogen carrier gas.
D. Dalle Nogare and P. Canu
Department of Chemical Engineering Principles and Practice, University of Padova, Padova, Italy
This work investigates the effects of boundary conditions on the species profiles in heterogeneous catalysis, with low Péclet systems. Hydrogen combustion in Helium was chosen because of the high diffusivities. Furthermore, already at T=300°C over a Pt catalyst, kinetics is very fast and the composition gradients at the inlet extremely steep. The issue is analyzed with 1D models, ...
Cormier, J.M., Semmar, N., Ouni, M.F.
GREMI, UMR 6606, Orléans
Les décharges luminescentes à pression atmosphérique sont étudiées expérimentalement en laboratoire pour la valorisation des alcanes et notamment la production d'hydrogène à partir du méthane. La modélisation des dispositifs usuels est complexe compte tenu de l'aspect non stationnaire des décharges. Afin d'évaluer le poids des paramètres de réglage d'un réacteur nous avons ...
COMSOL Computational Fluid Dynamics for Microreactors Used in Volatile Organic Compounds Catalytic Elimination
M. Olea, S. Odiba, S. Hodgson, A. Adgar
School of Science and Engineering, Teesside University, Middlesbrough, United Kingdom
Volatile organic compounds (VOCs) are organic chemicals that will evaporate easily into the air at room temperature and contribute majorly to the formation of photochemical ozone. They are emitted as gases from certain solids and liquids in to the atmosphere and affect indoor and outdoor air quality. They includes acetone, benzene, ethylene glycol, formaldehyde, methylene chloride, ...
F. Zonfrilli, V. Guida, L. Scelsi
Procter & Gamble Italia, Pomezia, Roma, Italy
Powder detergents containing sodium percarbonate and bleach activators undergo chemical decomposition when exposed to high relative humidity. Controlling the moisture intake in finished product packs is therefore a fundamental need in order to guarantee product stability during the whole supply chain. In this paper we show how we have leveraged COMSOL Multiphysics capability in order to model the ...
R&D Process Design Principal Engineer, Procter & Gamble, Italy
Outline of presentation: Comsol is a very flexible platform, ideal to model rheology modification under flow Analogy with reactive flows allows modeling of both thixotropy and gelation with decent level of accuracy and predictability It is possible, to a certain extent, to use 1D rheology to extrapolate 3D behavior ---------------------------------- Keynote speaker's biography:Vincenzo ...
S. Ungermann, M. Votsmeier, J. Gieshoff, and H. Vogel
 Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Darmstadt
 Umicore AG& Co. KG, Hanau-Wolfgang
This work focuses on simulations for design optimization by dividing a filter into two zones with different amounts of noble metal in a porous wall. For this, a two-dimensional stationary model with a simplified kinetics is devised and different appendages are followed up. Furthermore, time-dependent simulations with this 2D-model are presented.
R.E. Tosh, H. Chen-Mayer
National Institute of Standards and Technology, Gaithersburg, MD, USA
The technique of water calorimetry for primary-standard dosimetry of radiotherapy-level ionizing radiation is well established at national metrology institutes around the world, where such a direct realization of absorbed dose establishes the basis for calibrating instruments used for dosimetry in medical settings. The typical calorimeter system uses miniature thermistor beads to measure ...