Chemical-kinetic prediction of critical parameters in gaseous detonations

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A theoretical model including a detailed chemical kinetic reaction mechanism for hydrogen and hydrocarbon oxidation is used to examine the effects of variations in initial pressure and temperature on the detonation properties of gaseous fuel-oxidizer mixtures. Fuels considered include hydrogen, methane, ethane, ethylene, and acetylene. Induction lengths are computed for initial pressures between 0.1 and 10.0 atmospheres and initial temperatures between 200K and 500K. These induction lengths are then compared with available experimental data for critical energy and critical tube diameter for initiation of spherical detonation, as well as detonation limits in linear tubes. Combined with earlier studies concerning variations ... continued below

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Pages: 23

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Westbrook, C.K. & Urtiew, P.A. January 12, 1982.

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Description

A theoretical model including a detailed chemical kinetic reaction mechanism for hydrogen and hydrocarbon oxidation is used to examine the effects of variations in initial pressure and temperature on the detonation properties of gaseous fuel-oxidizer mixtures. Fuels considered include hydrogen, methane, ethane, ethylene, and acetylene. Induction lengths are computed for initial pressures between 0.1 and 10.0 atmospheres and initial temperatures between 200K and 500K. These induction lengths are then compared with available experimental data for critical energy and critical tube diameter for initiation of spherical detonation, as well as detonation limits in linear tubes. Combined with earlier studies concerning variations in fuel-oxidizer equivalence ratio and degree of dilution with N/sub 2/, the model provides a unified treatment of fuel oxidation kinetics in detonations. 4 figures, 1 table.

Physical Description

Pages: 23

Notes

NTIS, PC A02/MF A01.

Source

  • 19. international symposium on combustion, Haifa, Israel, 8 Aug 1982

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  • Other: DE82007144
  • Report No.: UCRL-87089
  • Report No.: CONF-820801-3
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 5359470
  • Archival Resource Key: ark:/67531/metadc1072235

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 12, 1982

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • April 27, 2018, 2:55 p.m.

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Westbrook, C.K. & Urtiew, P.A. Chemical-kinetic prediction of critical parameters in gaseous detonations, article, January 12, 1982; [Livermore,] California. (digital.library.unt.edu/ark:/67531/metadc1072235/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.