Abstract
Aluminium is a common fuel component in propellants and explosives. There is a wealth of literature on Aluminium combustion in gases at relatively low pressure but limited data on combustion at high pressure (as in explosive detonation products). In this work we have carried out and analysed cylinder tests with Aluminium loaded explosives with a view to assessing the applicability of low pressure burning rates in this regime. The analysis makes use of detailed numerical two phase flow modelling and a range of experiments used to validate other relevant aspects of the physics, such as drag laws. We conclude that the burning rate is significantly faster than that implied by extrapolating laws applicable at lower pressures.
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