Shock Interaction of Metal Particles in Condensed Explosive Detonation

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Authors
  1. Ripley, R.C.
  2. Zhang, F.
  3. Lien, F-S.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN)
Abstract
Three-dimensional mesoscale modeling is conducted to study the two-phase momentum and heat transfer during shock and thin-detonation-front interaction with metal particles in liquid nitromethane under various particle packing configurations and inter-particle spacings. The results showed that the particle velocity after the shock is a strong function of material density ratio of liquid to metal and volume fraction of particles. In the detonation case, it also depends on the expansion rate of the detonation products. The pressure at the leading edge of particles in a closely-packed particle bed achieves more than twice that of the theoretical 1D transmission pressure and the corresponding fluid temperature reaches 3828 K, providing hot spots that are responsible for detonation propagation in these heterogeneous explosives.
Report Number
DRDC-SUFFIELD-SL-2005-071 — Scientific Literature
Date of publication
15 Sep 2006
Number of Pages
5
DSTKIM No
CA027963
CANDIS No
525848
Format(s):
Hardcopy;Document Image stored on Optical Disk

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