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Impact of wind on in-situ burning behavior of spilled oil on open water
Journal of Loss Prevention in the Process Industries ( IF 3.5 ) Pub Date : 2020-04-25 , DOI: 10.1016/j.jlp.2020.104147
Depeng Kong , Hanbing Yang , Xu He

Spilled oil may cause serious environmental pollution and ecological destruction. Thus, an efficient oil spill response is essential to reduce and minimize the impacts seen from an oil spill. In-situ burning (ISB) has been proven to be one of the most convenient and efficient treatment methods for oil spills on sea. When in-situ burning operation is carried out on sea, the wind is usually available. Spilled oil pool fire flame will be blown to tilt with an angle from the vertical direction and the flame length will be stretched. This effect of flame on downstream will be significantly enhanced. It may even cause the burning of spilled oil out of control or hazard the operators near site. Therefore, it is meaningful to study the burning behavior of oil pool fire on open water under wind.

A small-scale oil pool fire on open water experiment system was designed, which could simulate the boundary conditions of sea surface ISB. A series of experiments were carried out to study the effects of oil pool diameter, oil layer thickness and wind speed on fire flame length and flame tilt angle. Flame characteristics and temperature of burning system were recorded. This study observes burning behavior to evolve from short pool fire to long declining phase which transient through boilover stage. Dimensionless flame length in pool fire stage increases with wind speed. As expected the flame tilt is strongly influenced by wind speed, tilt angle increase with wind speed. The observed experimental behavior is captured as improvement in the flame length and flame tilt angle models.

This study helped better understanding fire behavior in evolving environmental conditions, and the most importantly developed model would help guide better assessment of fire mitigation strategies.



中文翻译:

风对裸露的水在裸露的水上原位燃烧行为的影响

溢油可能会造成严重的环境污染和生态破坏。因此,有效的溢油应急响应对于减少和最小化溢油造成的影响至关重要。现场燃烧(ISB)已被证明是海上溢油的最方便,最有效的处理方法之一。在海上进行现场燃烧操作时,通常可以使用风。溢出的油池着火火焰将吹离垂直方向倾斜一定角度,并且火焰长度将延长。火焰对下游的影响将大大增强。甚至可能导致溢出的油燃烧失控或危及现场附近的操作员。因此,研究风对开阔水域油池火的燃烧行为具有重要意义。

设计了一种小型的开放水域油池火灾实验系统,可以模拟海面ISB的边界条件。进行了一系列实验研究油池直径,油层厚度和风速对火火焰长度和火焰倾斜角的影响。记录火焰特征和燃烧系统的温度。这项研究观察到燃烧行为从短池火发展到长时间下降阶段,并逐渐过渡到沸腾阶段。池火阶段无量纲火焰长度随风速增加。如预期的那样,火焰倾斜受到风速的强烈影响,倾斜角随风速增加。观察到的实验行为被记录为火焰长度和火焰倾斜角模型的改进。

这项研究有助于更好地了解不断变化的环境条件下的火灾行为,最重要的是开发的模型将有助于指导对火灾缓解策略的更好评估。

更新日期:2020-04-25
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