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The model of air pollution generated by fire chemical accident in an urban street canyon

机译:城市街道峡谷火灾化学事故产生的空气污染模型

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This paper analyzes the impact of wind on air pollution in an urban street canyon caused by an accidental tanker truck chemical fire located. Simulation results show that carbon monoxide concentration decreases, while carbon dioxide concentration increases proportionally with height above ground. Fire pollutant concentrations decrease exponentially with the lateral distance from fire center. There is no contact between air pollutants and the walls of the surrounding buildings in absence of wind. However, when wind velocity reaches 5 m per second, pollutants stream bends towards the buildings on either side of the street and a fraction of air pollutants reaches the street level.
机译:本文分析了风对偶然发生的加油车化学火灾造成的城市街道峡谷空气污染的影响。模拟结果表明,一氧化碳浓度降低,而二氧化碳浓度则随地上高度成比例增加。火灾污染物浓度随距消防中心的横向距离呈指数下降。在没有风的情况下,空气污染物与周围建筑物的墙壁之间没有接触。但是,当风速达到每秒5 m时,污染物流向街道两旁的建筑物弯曲,一部分空气污染物到达街道。

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