Equilibrium calculations of firework mixtures

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Description

Thermochemical equilibrium calculations have been used to calculate detonation conditions for typical firework components including three report charges, two display charges, and black powder which is used as a fuse or launch charge. Calculations were performed with a modified version of the TIGER code which allows calculations with 900 gaseous and 600 condensed product species at high pressure. The detonation calculations presented in this paper are thought to be the first report on the theoretical study of firework detonation. Measured velocities for two report charges are available and compare favorably to predicted detonation velocities. However, the measured velocities may not ... continued below

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7 p.

Creation Information

Hobbs, M.L.; Tanaka, Katsumi; Iida, Mitsuaki & Matsunaga, Takehiro December 31, 1994.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 30 times . More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Thermochemical equilibrium calculations have been used to calculate detonation conditions for typical firework components including three report charges, two display charges, and black powder which is used as a fuse or launch charge. Calculations were performed with a modified version of the TIGER code which allows calculations with 900 gaseous and 600 condensed product species at high pressure. The detonation calculations presented in this paper are thought to be the first report on the theoretical study of firework detonation. Measured velocities for two report charges are available and compare favorably to predicted detonation velocities. However, the measured velocities may not be true detonation velocities. Fast deflagration rather than an ideal detonation occurs when reactants contain significant amounts of slow reacting constituents such as aluminum or titanium. Despite such uncertainties in reacting pyrotechnics, the detonation calculations do show the complex nature of condensed phase formation at elevated pressures and give an upper bound for measured velocities.

Physical Description

7 p.

Notes

OSTI as DE96000705

Source

  • 3. international symposium on pyrotechnics and explosives, Beijing (China), 6-9 Nov 1995

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  • Other: DE96000705
  • Report No.: SAND--94-3060C
  • Report No.: CONF-9511132--1
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/113860 | External Link
  • Office of Scientific & Technical Information Report Number: 113860
  • Archival Resource Key: ark:/67531/metadc625473

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 31, 1994

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 14, 2016, 8:29 p.m.

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Hobbs, M.L.; Tanaka, Katsumi; Iida, Mitsuaki & Matsunaga, Takehiro. Equilibrium calculations of firework mixtures, report, December 31, 1994; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc625473/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.