Dimensionality effects in void-induced explosive sensitivity

Herring, Stuart Davis; Germann, Timothy Clark; Gronbech-Jensen, Niels

doi:10.1080/13647830.2016.1189598

Dimensionality effects in void-induced explosive sensitivity

Journal Article · Fri Sep 02 00:00:00 EDT 2016 · Combustion Theory and Modelling

DOI:https://doi.org/10.1080/13647830.2016.1189598· OSTI ID:1296680

Herring, Stuart Davis ^[1]; Germann, Timothy Clark ^[1]; Gronbech-Jensen, Niels ^[2]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of California, Davis, CA (United States)

Here, 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.

Research Organization:: Los Alamos National Laboratory (LANL)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1296680

Report Number(s):: LA-UR-16-20616

Journal Information:: Combustion Theory and Modelling, Journal Name: Combustion Theory and Modelling; ISSN 1364-7830

Publisher:: Taylor & FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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Multi-dimensional mesoscale simulations of detonation initiation in energetic materials with density-based kinetics Jackson, Thomas Luther; Jost, Antoine M. D.; Zhang, Ju Combustion Theory and Modelling, Vol. 22, Issue 2 https://doi.org/10.1080/13647830.2017.1401121	journal	December 2017

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