Experiments were performed in a rectangular tube equipped with flat channels to study the quenching of methane‐air deflagrations using high speed photography. Numerical simulations were carried out using a Laminar Finite‐Rate model to determine the relation between the quenching length, initial velocity, and channel width. The results showed that there is an obvious quadratic function correlation between queching length and the widths of channels, and a linear relation between quenching length and initial velocity. When the widths were no more than 1 mm, the relations can be well confirmed by experiments. It is shown that the relations may be appropriate to determine the quenching length of deflagration flame as well as a guidance for the production or design of industrial flame arresters.

中文翻译：

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狭窄平行通道内甲烷-空气爆燃猝灭研究

实验是在配有扁平通道的矩形管中进行的，目的是使用高速摄影技术研究甲烷空气爆燃的猝灭。使用层流有限速率模型进行了数值模拟，以确定淬火长度，初始速度和通道宽度之间的关系。结果表明，淬火长度与通道宽度之间存在明显的二次函数关系，淬火长度与初始速度之间存在线性关系。当宽度不超过1mm时，该关系可以通过实验很好地证实。结果表明，该关系可能适合确定爆燃火焰的淬火长度，以及工业熄火器的生产或设计指南。