Empirical model for the temporally resolved temperatures of post-detonation fireballs for aluminized high explosives

J. Motos Gordon; Kevin C. Gross; Glen P. Perram

doi:10.1117/12.883515

3 June 2011 Empirical model for the temporally resolved temperatures of post-detonation fireballs for aluminized high explosives

J. Motos Gordon, Kevin C. Gross, Glen P. Perram

Author Affiliations +

Proceedings Volume 8018, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XII; 80181M (2011) https://doi.org/10.1117/12.883515
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

A physics-based empirical model is developed to characterize the time varying temperature profile from post-detonation combustion. Fourier-transform infrared signatures are collected from field detonations of RDX-based aluminized high explosives surrounded by an aluminized plastic-bonded spin-cast liner. The rate of change of temperature in the postdetonation combustion fireballs are modeled using a radiative cooling term and a double exponential combustion source term. Optimized nonlinear least-squares fit of the numerical solution of the empirical model to the temperature data yields peak temperatures of 1290-1850. The observed heat released in the secondary combustion is well correlated with the high explosive and liner heat of combustion with an average efficiency of 54%.

Citation Download Citation

J. Motos Gordon, Kevin C. Gross, and Glen P. Perram "Empirical model for the temporally resolved temperatures of post-detonation fireballs for aluminized high explosives", Proc. SPIE 8018, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XII, 80181M (3 June 2011); https://doi.org/10.1117/12.883515

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