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Title: Modeling Hot Spot Experiments on Shocked Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine

Abstract

The cover picture shows a shock-induced reaction in a porous bed of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). Our study shows compaction, reaction, and gas jetting during the initial stages of shock in the powder bed. Shock reflection at the glass window interface increases hot spot temperatures in HMX product gas in excess of 7000 K at higher impact speeds which is readily observable using pyrometry techniques. We extract a temperature histogram from simulations at discrete times, using it to calculate an effective emission spectrum and effective temperature, Teff, for comparison to data. Calculating Teff based on Planck's Law with a gray body assumption demonstrates good agreement with hot spot temperature data. The agreement with experimental results validates our mesoscale simulations as useful tools for elucidating the role of hot spot mechanisms in the shock initiation of heterogeneous explosives. Finally, more details can be found in the Full Paper by Harry Springer, Will Bassett, Sorin Bastea, Svjetlana Stekovic, and Craig Tarver on page 330 ff.

Authors:
 [1];  [1];  [1];  [2];  [1]
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Illinois at Urbana-Champaign, IL (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1608091
Alternate Identifier(s):
OSTI ID: 1602902
Report Number(s):
LLNL-JRNL-774207
Journal ID: ISSN 0721-3115; 966739
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Propellants, Explosives, Pyrotechnics
Additional Journal Information:
Journal Volume: 45; Journal Issue: 2; Related Information: DOI for cover picture 10.1002/prep.202080201; Journal ID: ISSN 0721-3115
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Hotspot; Mesoscale; Simulations; HMX; Modeling

Citation Formats

Springer, H. Keo, Bassett, Will P., Bastea, Sorin, Stekovic, Svjetlana, and Tarver, Craig M. Modeling Hot Spot Experiments on Shocked Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine. United States: N. p., 2019. Web. doi:10.1002/prep.201900195.
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Springer, H. Keo, Bassett, Will P., Bastea, Sorin, Stekovic, Svjetlana, & Tarver, Craig M. Modeling Hot Spot Experiments on Shocked Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine. United States. https://doi.org/10.1002/prep.201900195
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Springer, H. Keo, Bassett, Will P., Bastea, Sorin, Stekovic, Svjetlana, and Tarver, Craig M. Wed . "Modeling Hot Spot Experiments on Shocked Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine". United States. https://doi.org/10.1002/prep.201900195. https://www.osti.gov/servlets/purl/1608091.
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@article{osti_1608091,
title = {Modeling Hot Spot Experiments on Shocked Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine},
author = {Springer, H. Keo and Bassett, Will P. and Bastea, Sorin and Stekovic, Svjetlana and Tarver, Craig M.},
abstractNote = {The cover picture shows a shock-induced reaction in a porous bed of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). Our study shows compaction, reaction, and gas jetting during the initial stages of shock in the powder bed. Shock reflection at the glass window interface increases hot spot temperatures in HMX product gas in excess of 7000 K at higher impact speeds which is readily observable using pyrometry techniques. We extract a temperature histogram from simulations at discrete times, using it to calculate an effective emission spectrum and effective temperature, Teff, for comparison to data. Calculating Teff based on Planck's Law with a gray body assumption demonstrates good agreement with hot spot temperature data. The agreement with experimental results validates our mesoscale simulations as useful tools for elucidating the role of hot spot mechanisms in the shock initiation of heterogeneous explosives. Finally, more details can be found in the Full Paper by Harry Springer, Will Bassett, Sorin Bastea, Svjetlana Stekovic, and Craig Tarver on page 330 ff.},
doi = {10.1002/prep.201900195},
journal = {Propellants, Explosives, Pyrotechnics},
number = 2,
volume = 45,
place = {United States},
year = {Wed Nov 27 00:00:00 EST 2019},
month = {Wed Nov 27 00:00:00 EST 2019}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1002/prep.201900195
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