GENERATION OF HIGH DYNAMIC PRESSURES BY MEANS OF GASEOUS EXPLOSIVE MIXTURES

Abstract

This paper describes two setups devoted to the investigation of the characteristics of the detonation products of gaseous explosive mixtures at high initial pressures. Despite numerous studies performed in the field of the equations of state of dense gases, a lack of knowledge actually remains in the range of pressures from several hundreds of bars up to several kilobars. Such pressures can be obtained in the detonation products of gaseous explosive mixtures ac a high initial pressure. The main difficulty arising when such explosives are used, is the design of appropriate devices that can withstand safely quite high detonation pressures. In order to provide data on the properties of detonation waves of gaseous explosive mixtures at elevated initial pressures, an investigation has been undertaken. The aim of the present paper is to describe two devices that allow the detonation of gaseous mixtures at initial pressures reaching 200 bars. Their common feature is the high pressure technology involved in their design. The experimental study is focused on the measurement of the detonation velocity. In that purpose, ionization probes are used and the mixtures are ignited by means of a powerful energy delivered through a detonator. In such a case, a stable detonation can be expected.