Chemistry Resolved Kinetic Flow Modeling of TATB Based Explosives

Conference · Thu Jul 21 04:00:00 EDT 2011

DOI:https://doi.org/10.1063/1.3686328· OSTI ID:1022950

Vitello, P A; Fried, L E; Howard, W M; Levesque, G; Souers, P C

Detonation waves in insensitive, TATB based explosives are believed to have multi-time scale regimes. The initial burn rate of such explosives has a sub-microsecond time scale. However, significant late-time slow release in energy is believed to occur due to diffusion limited growth of carbon. In the intermediate time scale concentrations of product species likely change from being in equilibrium to being kinetic rate controlled. They use the thermo-chemical code CHEETAH linked to an ALE hydrodynamics code to model detonations. They term their model chemistry resolved kinetic flow as CHEETAH tracks the time dependent concentrations of individual species in the detonation wave and calculates EOS values based on the concentrations. A HE-validation suite of model simulations compared to experiments at ambient, hot, and cold temperatures has been developed. They present here a new rate model and comparison with experimental data.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1022950
• Report Number(s): LLNL-PROC-491346
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CARBON
CHEMISTRY
DETONATION WAVES
DIFFUSION
EXPLOSIONS
EXPLOSIVES
HYDRODYNAMICS
KINETICS
SIMULATION
TATB