Three-dimensional hydrodynamic hot-spot model. [HMX, nitroguanidine; interactions of shock waves and voids]
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 hot-spot formation, interaction, and the resulting buildup toward 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 differences between shock sensitive explosives (PETN, HMX) and shock insensitive explosives (TATB, NQ) may be described using the hydrodynamic hot-spot model. The reactive hydrodynamics of desensitization of heterogeneous explosives by a weak preshock has been numerically modeled. The preshock desensitizes the heterogeneous explosive by closing the air holes and making it more homogeneous. A higher pressure second shock has a lower temperature in the multiple shocked explosive than in single shocked explosives. The multiple shock temperature may be low enough to cause a detonation wave to fail to propagate through the preshocked explosive. 10 refs., 12 figs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5780913
- Report Number(s):
- LA-UR-85-742; CONF-850706-6; ON: DE85009587
- Resource Relation:
- Conference: 8. international symposium on detonation, Albuquerque, NM, USA, 15 Jul 1985; Other Information: Portions of this document are illegible in microfiche products
- 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
CHEMICAL EXPLOSIVES
ACTIVATION ENERGY
DETONATIONS
HYDRODYNAMICS
PETN
TATB
ARRHENIUS EQUATION
EQUATIONS OF STATE
MATHEMATICAL MODELS
NUMERICAL DATA
SHOCK WAVES
THREE-DIMENSIONAL CALCULATIONS
DATA
ENERGY
EQUATIONS
ESTERS
EXPLOSIVES
FLUID MECHANICS
INFORMATION
MECHANICS
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives