A study was made to determine a mechanism which explains deflagration-to-detonation transition (DDT) in porous reactive solids. A qualitative description of the flow process is made, based on observations obtained from DDT experiments. From this, certain conclusions are reached as to the properties needed by propellants to exhibit a DDT. The numerical integration scheme itself is examined in detail in order to understand further the consequences of its use. Also, two scenarios for DDT are presented which exhibit characteristics similar to those derived from experimental evidence.
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