Reactive flow modeling of the polymer bonded explosive LX-17 double shock experiments

Rehagen, Thomas J.; Vitello, Peter; Bastea, Sorin; Fried, Laurence E.

doi:10.1063/1.5029740

Title: Reactive flow modeling of the polymer bonded explosive LX-17 double shock experiments

Journal Article · Fri Sep 28 00:00:00 EDT 2018 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.5029740· OSTI ID:1476190

Rehagen, Thomas J. ^[1]; Vitello, Peter ^[1]; Bastea, Sorin ^[1];

^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Overdriven double shock experiments provide a measurement of the properties of the reaction product states of the 1-3-5-triamino-2-4-6trinitrobenzene-based explosive LX-17. These experiments used two flyer materials mounted on the end of a projectile to send an initial shock through the LX-17, followed by a second shock of a higher magnitude into the detonation products. The experimental results are compared to 2D reactive flow modeling. A reactive flow model that describes only the kinetics of the LX-17 decomposition fails to accurately reproduce the decay of the first shock or the curvature or strength of the second shock. A new model is proposed in which the carbon condensate produced in the reaction zone is controlled by a kinetic rate. This allows the carbon condensate to be initially out of chemical equilibrium with the product gas. Finally, this new model reproduces the initial detonation peak and decay and matches the curvature of the second shock; however, it still over-predicts the strength of the second shock.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1476190

Report Number(s):: LLNL-JRNL-747438; 931124

Journal Information:: Journal of Applied Physics, Vol. 124, Issue 12; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 2 works

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Cited By (1)

High-pressure isothermal equation of state of composite materials: A case study of LX-17 polymer bonded explosive Leversee, River A.; Zaug, Joseph M.; Sain, John D. Applied Physics Letters, Vol. 115, Issue 5 https://doi.org/10.1063/1.5108677	journal	July 2019

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