Abstract

Combustion of vapors of a flammable liquid whose temperature is below the flash point is under study. In this case, the flame propagates along the surface of the liquid due to being heated by combustion products. The velocities of an oxidizer moving towards the flame, which propagates at velocities comparable to the laminar burning rate of premixed hydrocarbon flames, are measured. The measurements show that the gas flow is laminar. There is a correlation established between the flash point of a flammable liquid and the flame propagation velocity. On the basis of the data obtained, it is assumed that the main mechanism of formation of a flammable mixture ahead of the combustion front is a diffusion mechanism.

中文翻译：

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易燃液体表面上方的火焰传播机理

摘要

正在研究温度低于闪点的易燃液体蒸气的燃烧。在这种情况下，火焰由于被燃烧产物加热而沿着液体表面传播。测量朝着火焰移动的氧化剂的速度，该氧化剂的传播速度与预混烃火焰的层状燃烧速率相当。测量结果表明气流是层流的。在易燃液体的闪点和火焰传播速度之间建立了相关性。根据获得的数据，假定在燃烧前沿之前形成可燃混合物的主要机理是扩散机理。