潜艇封舱灭火安全性分析

Analysis of safety of extinguishing submarine fire by closing down its cabin

采用火灾区域模拟的方法建立了潜艇舱室火灾发展模型,并运用Runge-Kutta法对潜艇舱室火灾进行了模拟计算,经分析得出潜艇舱室中的燃烧过程具有缺氧、高温、快速的特点,进而证明了封舱灭火是一项适合于扑灭潜艇火灾的有效措施;然后,从潜艇火灾燃烧极不充分的特点出发,对火灾缺氧过程中产生烟气的主要成分CO的体积百分比进行了简要计算,并结合计算结果从CO致死性和爆炸性两个角度进行了分析研究,从数学理论上详细解释了封舱之后不能盲目打开舱门的原因。

Extinguishing a fire by closing down submarine cabin is proved as a valid method by establishing its fire development model through fire zone simulation. And an example of a fire in the submarine cabin was computed by means of Runge-Kutta. Based on the analysis, the fire in a submarine cabin was characterized by high-temperature, anoxia and rapid development of fire. Then, the consistency of CO in cabin was computed simply according to the anoxic characteristics. Combined with the result, and from the death and explosion caused by CO, this paper explained why the cabin＇s door cannot be opened at once after the fire in the cabin is put out.