The Role of Viscosity in TATB Hot Spot Ignition
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 1022916
- Report Number(s):
- LLNL-CONF-491839; TRN: US201118%%597
- Resource Relation:
- Conference: Presented at: 17th APS Shock Compression of Condensed Matter Conference, Chicago, IL, United States, Jun 26 - Jul 01, 2011
- Country of Publication:
- United States
- Language:
- English
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