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The kerosene explosibility: modelling and application to safety systems

Published online by Cambridge University Press:  15 March 2000

J. M. Pascaud ,
J. Brossard  and
D. Valeze
J. M. Pascaud
Affiliation:
LEES, Université d'Orléans, 63 avenue de Lattre de Tassigny, 18020 Bourges Cedex, France
J. Brossard
Affiliation:
LEES, Université d'Orléans, 63 avenue de Lattre de Tassigny, 18020 Bourges Cedex, France
D. Valeze
Affiliation:
DGA/CEG, 46500 Gramat, France
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Abstract

The aim of this work is to study the kerosene explosibility in closed or vented vessels and to develop an application to safety systems. The basic characteristics of the model have been developed for the ignition and the combustion of propulsive powders and adapted to liquid fuels with appropriate parameters linked to simplified kinetics. A simple representation of the combustion phenomena based on energy transfers and the action of specific molecular species is presented. The pressure venting, due to the vent breaking is calculated taking into account the mass rate of discharge of the different products in the assumption of the standard orifice equations. The model allows the study of various parameters such as the nature of the kerosene, the fuel ratio of the mixture, the ignition energy, the thermal exchanges and the influence of the pressure venting or the vent area. The theoretical results have been compared with data obtained in the course of experiments performed in small vessel volumes (V0 = 13 and 33 l) and indicate correct preliminary tendencies.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 9 , Issue 3 , March 2000 , pp. 215 - 225
Copyright
© EDP Sciences, 2000

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