Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65480
Title: Flame propagation of premixed liquefied petroleum gas explosion in a tube
Authors: Huo, Y
Chow, WK 
Keywords: Explosion
Flame propagation
Premixed fuel gas
Tube experiment
Issue Date: 2017
Publisher: Pergamon Press
Source: Applied thermal engineering, 2017, v. 113, p. 891-901 How to cite?
Journal: Applied thermal engineering 
Abstract: Flame propagation in premixed liquefied petroleum gas (LPG) explosion was studied experimentally in a tube of diameter 2.6 m and length 25 m. 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.
URI: http://hdl.handle.net/10397/65480
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2016.11.040
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