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On the mechanism of low-velocity detonation in liquid explosives.
Astronaut Acta 1972 Oct; 17(4-5):575-587
A theoretical description of low-velocity detonation (LVD) in liquid explosives has been developed, based upon a cavitation model of the phenomena. This model, precursor waves cause cavitation of the liquid; the cavities are then shock-initiated by the advancing detonation front. The Chapman-Jouguet (C-J) condition of classical detonation theory has been extended to this case where precursor wave effects are important. In essence, it is shown that coupling of rate processes through a precursor wave limits the number of Hugoniot adiabat states that are accessible. For the case of LVD in liquid explosives, six rate processes are identified and treated analytically to yield an expression coupling the detonation pressure, extent of liquid cavitation, and wall shock attenuation rate. Calculated detonation velocities, pressures, and stability conditions are in very good agreement with the available experimental data for nitroglycerin, ethylene glycol dinitrate, and nitromethane.
Explosives; Mathematical models
Robert F. Chaiken, Pittsburgh Mining and Safety Research Center, Bureau of Mines, U.S. Department of the Interior, Pittsburgh, Pennsylvania 15213
OP; Journal Article
Issue of Publication
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division