Simulation of detonation of ammonium nitrate fuel oil mixture confined by aluminum: edge angles for DSD

Conference · Fri Jan 01 04:00:00 EST 2010

OSTI ID:1000932

Short, Mark ^[1]; Quirk, James J ^[1]; Kiyanda, Charles B ^[1]; Jackson, Scott I ^[1]; Briggs, Matthew E ^[1]; Shinas, Micheal A ^[1]

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1. Los Alamos National Laboratory

Non-ideal high explosives are typically porous, low-density materials with a low detonation velocity (3--5 km/s) and long detonation reaction zone ({approx} cms). As a result, the interaction of a non-ideal high explosive with an inert confiner can be markedly different than for a conventional high explosive. Issues arise, for example, with light stiff confiners where the confiner can drive the high explosive (HE) through a Prandtl-Meyer fan at the HE/confiner interface rather than the HE driving the confiner. For a non-ideal high explosive confined by a high sound speed inert such that the detonation velocity is lower than the inert sound speed, the flow is subsonic and thus shockless in the confiner. In such cases, the standard detonation shock dynamics methodology, which requires a positive edge-angle be specified at the HE/confiner interface in order that the detonation shape be divergent, cannot be directly utilized. In order to study how detonation shock dynamics can be utilized in such cases, numerical simulations of the detonation of ammonium nitrate-fuel oil (ANFO) confined by aluminum 6061 are conducted.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1000932
• Report Number(s): LA-UR-10-01904; LA-UR-10-1904
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
ALUMINIUM
AMMONIUM NITRATES
BLOWERS
CHEMICAL EXPLOSIVES
EXPLOSIONS
FUEL OILS
MIXTURES
SHAPE
SIMULATION
VELOCITY