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Original Articles

Etude par simulation numérique d’un réacteur de synthèse de nanopoudres

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Pages 775-794 | Published online: 15 May 2012
 

Abstract

Dans le cas de la synthèse de poudres céramiques par pyrolyse laser, un modèle de calcul numérique a été développé. Ce modèle prend en considération les transferts d’énergie et les réactions chimiques, le but étant de comprendre les différents mécanismes responsables de la formation et de la collecte des poudres. Une étude du réacteur dans un regime turbulent a été réalisée dans le but de concevoir un réacteur industriel.

In the present work, a numerical model was developed for the simulation of the process of ceramic powder synthesis by the laser pyrolysis. It takes into account the flow, heat transfer and chemical reactions. The aim of this investigation is to develop a three dimensional model of the reactor and to characterize the influence of the various involved thermal parameters during the process. This will contribute to an improved fundamental understanding of the heat and mass transfer and fluid flow during the synthesis of ceramic nanopowdera. In addition, The reactor is studied under turbulent flow regime in order to provide first guidance of the design and the optimisation of the geometry of an industrial synthesis reactor.

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