Three-dimensional hydrodynamic hot-spot
The basic processes in the shock initiation of heterogeneous explosives have been investigated theoretically using a model of a cube of nitromethane containing 91 cubic air holes. The interaction of a shock wave with a single air hole and a matrix of air holes in PETN, HMX, and TATB has been numerically modeled. The interaction of a shock wave with the density discontinuities, the resulting hot-spot formation and interaction, and the buildup to propagating detonation were computed using three-dimensional numerical Eulerian hydrodynamics with Arrhenius chemical reaction and accurate equations of state according to the hydrodynamic hot-spot model. The basic processes in the desensitization of a heterogeneous explosive by preshocking with a shock pressure too low to cause propagating detonation was numerically modeled. The basic differences between shock sensitive explosives such as PETN or HMX and shock insensitive explosives such as TATB or NQ may be described using the hydrodynamic hot-spot model.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6555967
- Report Number(s):
- LA-UR-84-2752; CONF-8409128-1; ON: DE84016821
- Country of Publication:
- United States
- Language:
- English
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Three-dimensional hydrodynamic hot-spot model applied to PETN, HMX, TATB, and NQ
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Related Subjects
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
ARRHENIUS EQUATION
CHEMICAL EXPLOSIVES
EQUATIONS
ESTERS
EXPLOSIVES
FLUID MECHANICS
HETEROGENEOUS EFFECTS
HOT SPOTS
HYDRODYNAMIC MODEL
HYDRODYNAMICS
IMPACT SHOCK
MATHEMATICAL MODELS
MECHANICS
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PARTICLE MODELS
PETN
STATISTICAL MODELS
TATB
THERMODYNAMIC MODEL
THREE-DIMENSIONAL CALCULATIONS