Study of deflagration-to-detonation transition (DDT) in the granular explosive, CP
In this report, we present an experimental and theoretical study of the combustion processes associated with deflagration-to-detonation transition in the granular explosive, CP. Image-enhanced, high-speed streak photography recorded the various stages of flame spread within heavily confined charges as viewed through a lexan window in a thick wall, stainless steel tube. To describe these observations we apply a multiphase reactive flow model based on the theory of mixtures. This nonequilibium model treats each phase as fully compressible and incorporates a compaction model for the granular reactant. Formulation of the constitutive models includes a pressure-dependent burn rate and experimentally-determined porous bed permeability. Predictions of this model agree well with experimental observations.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5150322
- Report Number(s):
- SAND-83-1929; ON: DE84009500
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermal-mechanical model of deflagration-to-detonation in granular energetic materials
Modeling and computation of deflagration-to-detonation transition in reactive granular materials
Related Subjects
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
CHEMICAL EXPLOSIVES
CHEMICAL REACTIONS
COMBUSTION
DETONATIONS
EXPLOSIVES
FLAMES
OXIDATION
PHOTOGRAPHY
STREAK PHOTOGRAPHY
THERMOCHEMICAL PROCESSES