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Abstract
The dimensionality of defects in high explosives controls their heat generation and the expansion of deflagrations from them. We compare the behaviour of spherical voids in three dimensions to that of circular voids in two dimensions. The behaviour is qualitatively similar, but the additional focusing along the extra transverse dimension significantly reduces the piston velocity needed to initiate reactions. However, the reactions do not grow as well in three dimensions, so detonations require larger piston velocities. Pressure exponents are seen to be similar to those for the two-dimensional system.
Additional information
Funding
This report was prepared by Los Alamos National Security under contract with the US Department of Energy [contract no. DE-AC52-06NA25396]. Funding was provided by the Advanced Simulation and Computing (ASC) program; the Materials Design Institute [contract no. 75782-001-09]; and the Fannie and John Hertz Foundation.