In a potential accident scenario with a solid-propellant fire, aluminum present in the propellant and in surrounding structures is exposed to high-temperature environments. The enthalpy present in the aluminum particles is a substantial component of the heat release, both in terms of the particle sensible energy and its chemical energy. This paper examines the consequences of the deposition of aluminum particles present in the propellant in terms of heat transfer to surfaces. Also examined is the possibility that deposited aluminum will ignite in the high-temperature oxidizing environment. The examination is made using a computational fluid dynamics approach with some new models to describe the aluminum oxidation. In addition, these models provide a means to predict the aluminum ignition criteria that will be discussed.

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