Study on peak overpressure and flame propagation speed of gas deflagration in the tube with obstacles

JiaSong Luo, Xiao-Lin Wei, Sen Li, Lixin Yu, Yu Zhang, Teng Li, Bo Li

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The on-way peak overpressure and flame propagation speed of gas deflagration in the tube with obstacles are important data for process safety. Based on carbon monoxide deflagration experiments, the paper presents a multi-zone integration model for calculation of on-way peak overpressure, in which the tube with obstacles is considered as a series of venting explosion enclosures which link each others. The analysis of experimental data indicates that the on-way peak overpressure of gas deflagration can be correlated as an empirical formula with equivalence ratio of carbon monoxide oxidation, expansion ratio, flame path length, etc., and that the on-way peak overpressure exhibits a linear relationship with turbulence factor and flame propagation speed. An empirical formula of flame propagation speed is given.
Original languageEnglish
Pages (from-to)1847-1854
Number of pages8
JournalScience China Technological Sciences
Volume53
Issue number7
DOIs
Publication statusPublished - 2010
Externally publishedYes

Keywords

  • flame propagation speed
  • multi-zone integration model
  • obstacle
  • peak overpressure

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