Stability of Self-Sustaining Combustion of Energetic Materials with Pronounced Condensed Phase Reactions

Abstract

Typically, simulations of the combustion of energetic materials have focused on a detailed description of the processes in the gas phase. This is due to an implicit assumption that the burning rate control zone is located in the gas phase at moderate pressures. However, at the present time new arguments in favor of the concept of the condensed phase being the locus of the burning rate control zone for typical energetic materials in "rocket" pressure range have become available. These are based on data of the temperature profiles in the combustion wave of modern energetic materials. Analysis shows that, with pronounced heat release in the condensed phase, self-sustaining combustion can be unstable. This effect may result in the existence of combustion regimes with "cross-surface" combustion waves. The difficulty of formulating a description of the combustion of energetic materials with pronounced condensed phase reactions are discussed.

Universal Concept of Self-Synchronization of the Micro/Nano- Structures of the Energetic Materials Reactionary Zones and Micro-Scale Combustion Mechanisms

“…Presented research is devoted to further development of his ideas at the new qualitative level. In the last decades, researchers have observed the excitation of micro/nano -structures and the presence of micro-torches over the burning surface of the energetic materials (EM), [1][2][3][4][5][6][7]. It can be stated now that such local unstable behavior is typical for the EM with well pronounced exothermic reactions in the condensed phase and evaporation on the burning surface.…”