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High Explosive Detonation–Confiner Interactions

Journal Article · · Annual Review of Fluid Mechanics
 [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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The primary purpose of a detonation in a high explosive (HE) is to provide the energy to drive a surrounding confiner, typically for mining or munitions applications. The details of the interaction between an HE detonation and its confinement are essential to achieving the objectives of the explosive device. For the high pressures induced by detonation loading, both the solid HE and confiner materials will flow. The structure and speed of a propagating detonation, and ultimately the pressures generated in the reaction zone to drive the confiner, depend on the induced flow both within the confiner and along the HE–confiner material interface. The detonation–confiner interactions are heavily influenced by the material properties and, in some cases, the thickness of the confiner. This review discusses the use of oblique shock polar analysis as a means of characterizing the possible range of detonation–confiner interactions. Computations that reveal the fluid mechanics of HE detonation–confiner interactions for finite reaction-zone length detonations are discussed and compared with the polar analysis. Furthermore this includes cases of supersonic confiner flow; subsonic, shock-driven confiner flow; subsonic, but shockless confiner flow; and sonic flow at the intersection of the detonation shock and confiner material interface. We also summarize recent developments, including the effects of geometry and porous material confinement, on detonation–confiner interactions.
Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1512758
Report Number(s):
LA-UR--17-21812
Journal Information:
Annual Review of Fluid Mechanics, Journal Name: Annual Review of Fluid Mechanics Journal Issue: 1 Vol. 50; ISSN 0066-4189
Publisher:
Annual ReviewsCopyright Statement
Country of Publication:
United States
Language:
English

Cited By (7)

The effect of compaction of a porous material confiner on detonation propagation journal November 2017
Characteristic path analysis of confinement influence on steady two-dimensional detonation propagation journal January 2019
Transients following the loss of detonation confinement journal January 2020
Detonation propagation for shock-driven, subsonic and supersonic confiner flow journal December 2019
Triple points and sign of circulation journal December 2019
Calibration of the Pseudo-Reaction-Zone model for detonation wave propagation journal March 2018
Triple points and sign of circulation text January 2019

Figures / Tables (13)

Figure 1(p. 4)figure Figure 1
Figure 2(p. 7)figure Figure 2
Figure 3(p. 8)figure Figure 3
Figure 4(p. 9)figure Figure 4
Figure 5(p. 11)figure Figure 5
Figure 6(p. 12)figure Figure 6
Figure 7(p. 15)figure Figure 7
Table 1(p. 16)table Table 1
Figure 8(p. 19)figure Figure 8
Figure 10(p. 21)figure Figure 10
Figure 9(p. 21)figure Figure 9
Figure 11(p. 23)figure Figure 11
Figure 12(p. 24)figure Figure 12

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Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
compaction
confinement
detonation
detonation–confiner interaction
energetic materials
high explosives
material interfaces
shocks