文章基本信息

标题：Characteristics of flame velocity of gas explosion with obstruction in pipeline
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作者：Baisheng Nie ; Baisheng Nie ; Shoutao Hu 等
期刊名称：Perspectives in Science
印刷版ISSN：2213-0209
电子版ISSN：2213-0209
出版年度：2016
卷号：7
页码：277-281
DOI：10.1016/j.pisc.2015.12.003
语种：English
出版社：Elsevier
摘要：Summary The velocity of flame propagation caused by gas explosion is very difficult to be measured in experiment. A new image processing method is applied to calculate the velocity based on correlation coefficients of images. Experiment of gas explosion with 9.5% gas is carried out. The images photographed during the experiment are processed by the new method. And the change law of velocity of flame propagation is calculated. The results show that the velocity and structure of the flame are both unstable when it propagates in the pipeline. The propagation of flame is not away in acceleration state, but acceleration and deceleration are mutual alternation. And the velocity is in shock statement till the flame extinct during the whole flame propagation. The results also show that the metal wire mesh in the pipeline can accelerate the velocity of flame propagation but reduce the damage caused by gas explosion. And this method also covers the shortage of experimental method.
关键词：Propagation velocity; Gas explosion; Image processing method; Correlation coefficient;