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http://dx.doi.org/10.6108/KSPE.2017.21.5.010

Numerical Simulation for Detonation Characteristics of Heavily Aluminized High Explosives  

Kim, Wuhyun (Department of Mechanical and Aerospace Engineering, Seoul National University)
Gwak, Min-cheol (Department of Mechanical and Aerospace Engineering, Seoul National University)
Yoh, Jai-ick (Department of Mechanical and Aerospace Engineering, Seoul National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.21, no.5, 2017 , pp. 10-18 More about this Journal
Abstract
The problem of non-ideal detonation propagation velocities in heterogeneous hybrid mixtures is studied in the case of a high explosive with suspended fine aluminum (Al) particles. Since there exist difference in the time scales of the characteristic induction and combustion of High Explosives and solid particles, the process of energy release behind the leading shock front occurs over an extended period of time. The problem is analyzed by the theory of the mechanics of multiphase media with mass, momentum and heat exchanges between particles and gases. The numerical results match the available experimental results of heavily aluminized (5~25% Al weight) HMX explosive obtained previously.
Keywords
Thermobaric; Two-phase model; Simulation; Afterburn; Double Front Detonation;
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