Explosions de poussières et de mélanges hybrides : étude paramétrique et relation entre la cinétique de combustion et la violence de l'explosion

Abstract : Dust explosions risks linked with their occurrence and their gravity are very high. In consequence, we try to understand this phenomenon by studying the influence of various parameters on the dust inflammability (minimum inflammation concentration, temperature and energy) and dust explosivity (maximum overpressure and rate of pressure rise) for both metallic (aluminium) and organic (icing sugar and polyethylene) dusts. Concentration, particle size distribution, water and solvent (hybrid mixtures) contents influences on dust explosion sensibility and severity have been studied. For example, we observed an increase of dust explosivity in the presence of solvent. Thanks to these parametric studies, we initiated a dust explosion modelling by linking combustion kinetic and explosion violence
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Mamadou Traore. Explosions de poussières et de mélanges hybrides : étude paramétrique et relation entre la cinétique de combustion et la violence de l'explosion. Autre. Institut National Polytechnique de Lorraine, 2007. Français. ⟨NNT : 2007INPL019N⟩. ⟨tel-01752813⟩

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