Study on external characteristics of gasoline-air mixture's free venting explosion in semi-confined space

doi:10.16265/j.cnki.issn1003-3033.2017.08.009

Abstract

Abstract: External characteristics of gasoline-air mixture's free venting explosion in the semi-confined space were studied experimentally. A model was built for the relation between the overpressure and the dimensionless scaled distance based on the chemical kinetics of explosion and flammable gas explosion overpressure assessment method among others. According to the experimental results, a semi-empirical formula was worked out for the relation between external maximum overpressure and the scaled distance. The conclusion is that the maximum deflagration overpressure is a negative exponential function of the scaled distance and that the positive feedback effects between the flow field and flame lead to changes in the shape of flame during the propagation.

Key words: gasoline-air mixture, semi-confined space, deflagration, overpressure, flame

CLC Number:

X932

LI Yangchao, DU Yang, WANG Shimao, QI Sheng, LI Guoqing. Study on external characteristics of gasoline-air mixture's free venting explosion in semi-confined space[J]. China Safety Science Journal, 2017, 27(8): 50-55.

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