Thermal-mechanical model of deflagration-to-detonation in granular energetic materials
In this work we present a multiphase, reactive flow model, based on the theory of mixtures and utilize it to describe deflagration-to-detonation transition in granular explosives and propellants. This nonequilibrium model treats each phase as fully compressible and incorporates a dynamic compaction model for the granular reactant. Formulation of the constitutive models include a pressure-dependent burn rate and experimentally-determined porous bed permeability. Numerical solutions of the one-dimensional Eulerian equations are obtained using an implicit method-of-lines solver. The model has examined two explosives: CP and HMX. Predictions with this model agree well with existing experimental observations and demonstrate that a thermodynamically-consistent multiphase model can describe the flame-spread processes of convective burning, compressive burning and detonation.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6750918
- Report Number(s):
- SAND-84-0282C; CONF-8406136-1; ON: DE84012809
- Country of Publication:
- United States
- Language:
- English
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Study of deflagration-to-detonation transition (DDT) in the granular explosive, CP
An experimental and theoretical study of deflagration-to-detonation transition (DDT) in the granular explosive, CP
Related Subjects
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
CHEMICAL EXPLOSIVES
DETONATION LIMITS
DETONATIONS
ENERGY LEVELS
ENERGY MODELS
EXPLOSIVES
GRANULAR MATERIALS
MATERIALS
MECHANICAL PROPERTIES
THERMAL ANALYSIS