Burning and detonation
The effect of confined burning explosive abutting nonburning explosive in a variety of one-dimensional geometries has been studied by numerical simulation, demonstrating the effects of confinement, burning rate, and shock sensitivity. The model includes porous bed burning, compressible solids and gases, shock-induced decomposition with possible transition to detonation, and constant velocity ignition waves. Two-phase flow, gas relative to solid, is not allowed. Because the shock sensitivity of an explosive changes with explosive density and because such experimental data is rarely available over a range of densities, a method for the calculation of the density effect on the initial-shock-pressure, distance-to-detonation (wedge test) measure of shock sensitivity is given. The calculation uses the invariance with density of the shock particle velocity as a function of time to detonation, and the experimental data at some high density.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6586749
- Report Number(s):
- LA-UR-81-839; CONF-810602-21
- Country of Publication:
- United States
- Language:
- English
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Numerical modeling of the deflagration-to-detonation transition
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Related Subjects
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
CHEMICAL EXPLOSIVES
CHEMICAL REACTIONS
COMBUSTION
DATA
DENSITY
DETONATIONS
EQUATIONS
EQUATIONS OF STATE
ESTERS
EXPERIMENTAL DATA
EXPLOSIVES
INFORMATION
MATHEMATICAL MODELS
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PETN
PHYSICAL PROPERTIES
SENSITIVITY
SHOCK WAVES
THEORETICAL DATA
THERMOCHEMICAL PROCESSES