Flame propagation of premixed liquefied petroleum gas explosion in a tube

Y. Huo, Wan Ki Chow

Research output: Journal article publicationJournal articleAcademic researchpeer-review

39 Citations (Scopus)


Experiments on LPG explosion were conducted in a single zone first in this large explosion tube. The explosion tube was then divided into two zones with different mixing ratios of LPG and air. A thin polyvinyl chloride (PVC) film sheet was used to adjust the length of each zone. A total of three single-zone experiments and five two-zone experiments were carried out. Explosion phenomena and flame propagation in the tube were studied analytically using experimental results and theoretical analysis. A simple model for the flame propagation was proposed and tested using the experimental data in the present study and some literature results. Flame propagation characteristics were found with a general trend to vary with time as an exponential function for adequate fuel with uniform concentrations within a certain distance of the tube. The flame propagation speed at a point in explosion depends on the turbulent burning speed and expansion ratio. Experimental data deviated more from the empirical exponential function for larger variations of fuel concentrations.
Original languageEnglish
Pages (from-to)891-901
Number of pages11
JournalApplied Thermal Engineering
Publication statusPublished - 25 Feb 2017


  • Explosion
  • Flame propagation
  • Premixed fuel gas
  • Tube experiment

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering


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