Experimental studies and modeling on flame velocity in turbulent deflagration in an open tube

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

23 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)291-307
Journal / PublicationProcess Safety and Environmental Protection
Volume129
Online published22 Jul 2019
Publication statusPublished - Sept 2019

Abstract

Studies on flame propagation during turbulent deflagration in a partly opened tube are important in developing explosion protection scheme and suppression technology for industrial process with explosion risk. Gas explosions in coal mines, deflagration in gas transmission tubes and dust explosions in confined working spaces can be simplified by a partly opened tube in studying deflagrations. An experimental rig with a 16 m long open tube of 0.488 m diameter was constructed for studying the flame propagation characteristics of premixed liquefied petroleum gas (LPG) under different mixing ratios with air. The transient flame propagation distance, flame velocity, pressure and temperature were analyzed. A flame velocity model for an explosion in an open tube was proposed and verified by the experimental data. This model was also used to calculate the flame velocity of experiments reported in literature. It is demonstrated that the developed flame velocity model is appropriate for premixed gas deflagrations up to an equivalence ratio of 1 at the initial stage of flame propagation, i.e., with a flame velocity less than 100 m/s.

Research Area(s)

  • Analytical solution, Deflagration in tube, Flame velocity model, Premixed combustion

Citation Format(s)

Experimental studies and modeling on flame velocity in turbulent deflagration in an open tube. / Fan, W. P.; Gao, Y.; Zhang, Y. M. et al.
In: Process Safety and Environmental Protection, Vol. 129, 09.2019, p. 291-307.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review