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The role of viscosity in TATB hot spot ignition

Authors :
Laurence E. Fried
W. Michael Howard
Fady Najjar
John E. Reaugh
Luis Zepeda-Ruis
Source :
AIP Conference Proceedings.
Publication Year :
2012
Publisher :
AIP, 2012.

Abstract

The role of dissipative effects, such as viscosity, in the ignition of high explosive pores is investigated using a coupled chemical, thermal, and hydrodynamic model. Chemical reactions are tracked with the Cheetah thermochemical code coupled to the ALE3D hydrodynamic code. We perform molecular dynamics simulations to determine the viscosity of liquid TATB. We also analyze shock wave experiments to obtain an estimate for the shock viscosity of TATB. Using the lower bound liquid-like viscosities, we find that the pore collapse is hydrodynamic in nature. Using the upper bound viscosity from shock wave experiments, we find that the pore collapse is closest to the viscous limit.

Details

ISSN :
0094243X
Database :
OpenAIRE
Journal :
AIP Conference Proceedings
Accession number :
edsair.doi...........23c80a5ec809ab87703a1241861cbde5
Full Text :
https://doi.org/10.1063/1.3686278