Publication de 4 numéros par an
ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360
Indexed in
NUMERICAL STUDY OF THE REACTIVE SPECIES
RÉSUMÉ
Local thermodynamic equilibrium (LTE), frequently used as first approximation in modeling of thermal plasma processes, is sometimes unable to explain experimental results. It is particularly true near a wall and a surface impacted by the plasma jet. In this work, a 2-D custom model using the CFD commercial code Fluent was developed for argon-oxygen inductively coupled plasma (ICP) at atmospheric pressure. The assumption of thermal equilibrium was made but not that of chemical equilibrium. The transport properties were calculated using higher-order approximation of Chapman-Enskog theory. Reaction kinetics rates of dissociation and ionization were also considered. The model was applied to a process torch used for carving experiments on graphite, and the distribution of reactive species brought to the surface was analyzed in terms of reaction rate distribution: the experimental effect of different injection geometries on the distribution of the reaction rate is qualitatively reproduced by the model.
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Vadon Mathieu, Sortland Øyvind, Nuta Ioana, Chatillon Christian, Tansgtad Merete, Chichignoud Guy, Delannoy Yves, CFD Modeling of Boron Removal from Liquid Silicon with Cold Gases and Plasma, Metallurgical and Materials Transactions B, 49, 3, 2018. Crossref