Numerical Simulation on Detonation Process in Variable-Section Charge under Condition of End-Point Detonation Model

Abstract:

when detonation wave is spreading in cylindrical charge which has a shell constraint, the border of the shell will reflect the detonation wave, reflection wave still has a strong influence on charge’s centerline. Compared with cylindrical charge, the influence of variable-section charge’s stack reflection wave on centerline is unsteady, relating to the gradual trends height of section area. On the condition of end-point detonation, doing the numerical simulation on detonation process of equal-section charge 、reduced-increased charge and increased-reduced charge, analyzing the pressure and velocity of detonation products on position of centerline, founding in the range of gradually decreasing section al, detonation wave through reflecting and then occur oblique collision that induce the pressure increasing rapidly. Doing the numerical simulation on variable-section charge’s detonation, promoting the understand of the reflection wave mechanism and the velocity of detonation product, this can be a practical significance to further improve the charge structure design and realize the efficient utilization of detonation energy.

• Periodical: Applied Mechanics and Materials (Volumes 799-800)
• Pages: 728-733
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.799-800.728
• Online since: October 2015
• Authors: Jun Ting Yin, Gang Li*
• Keywords: Charge, Constraint, Detonation, Reflection Wave, Variable-Section Al

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