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Title: High-order shock-fitted detonation propagation in high explosives

Authors:
;
Publication Date:
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1416824
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Computational Physics
Additional Journal Information:
Journal Volume: 332; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-01-12 09:29:38; Journal ID: ISSN 0021-9991
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

Citation Formats

Romick, Christopher M., and Aslam, Tariq D. High-order shock-fitted detonation propagation in high explosives. United States: N. p., 2017. Web. doi:10.1016/j.jcp.2016.11.049.
Romick, Christopher M., & Aslam, Tariq D. High-order shock-fitted detonation propagation in high explosives. United States. doi:10.1016/j.jcp.2016.11.049.
Romick, Christopher M., and Aslam, Tariq D. Wed . "High-order shock-fitted detonation propagation in high explosives". United States. doi:10.1016/j.jcp.2016.11.049.
@article{osti_1416824,
title = {High-order shock-fitted detonation propagation in high explosives},
author = {Romick, Christopher M. and Aslam, Tariq D.},
abstractNote = {},
doi = {10.1016/j.jcp.2016.11.049},
journal = {Journal of Computational Physics},
number = C,
volume = 332,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.jcp.2016.11.049

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • This paper considers the location of the sound points normal in a stationary detonation front in a condensed explosive, if the mass flow rate of the shock-compressed substance u is less on the shock polar than at the point of maximal angle of stream rotation. The known construction of the ordinary form of the shock polar in gases is extended by graphical construction to estimate the slope of the isentropy at point A of the shock adiabat. The conditions that a condensed medium must satisfy for the sound point to occupy a normal location on its theoretical shock polars aremore » determined. It is found, according to this analysis performed on the theoretical shock polars of condensed HE, that the sound points do occupy the normal location.« less
  • Initiating detonation in a solid explosive using a weak shockwave effect, the detonation front in the initial stage of formation consists of a multitude of hot points as a direct result of the heterogeneity of the substance. The authors maintain that the total effect of all emitted shockwave pulses should result in the development of a propagating shock-wave front as their round surface is similar to that formed by a continuous wave front on the basis of the classical Huygens principle in the wave theory of light shown here. The authors analyze the results of this interpretation. The pattern describedmore » can also be expanded to include blended commercial explosives with an inert filler, where the process of the formation of a detonation front now evolves not so much from point to point as from granule to granule.« less
  • We describe experimental studies of the initiation of liquid explosives by strong plane shocks (pressures 50 to 100 kbar). These experiments demonstrate thermal explosion as a result of shock heating in the explosive. When the shock enters the explosive, the explosive is heated. After a delay, detonation in the heated, compressed explosive begins at the interface, where the explosive has been hot longest. The detonation proceeds through the compressed explosive at a velocity greater than the steady state velocity in uncompressed explosive, overtaking the initial shock and overdriving detonation in the unshocked explosive. Most of the work was done onmore » nitromethane, but molten TNT, molten DINA, Dithekite 13, and single crystals of PETN are shown to behave in the same way. Experiments showing the effects of bubbles and shock interactions in the explosive are presented.« less
  • In this review the construction of models of the appearance of detonation in heterogeneous explosives and the realization of numerical programs are considered as well as comparison of theoretical and experimental data. Models of explosive breakdown including analysis of the dynamics of pore collapse and models based on formalized kinetics are discussed, mechanisms of hot spot formation are enumerated, and modern experimental methods used to obtain quantitative information are briefly considered, together with Lagrangian analysis of the reacting fluxes. The review illustrates the diversity of existing modeling approaches and macrokinetic equation forms which allow initiation to be described in amore » one-dimensional formulation and, in some cases, in two-dimensional geometry.« less
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