多火源状态下巷道烟气流动规律的数值模拟

Numerical simulation of smoke flow under multi ignition sources condition in coal mine roadway

为分析多火源对煤矿巷道火灾烟气流动的影响,以某矿一运输顺槽为研究对象,采用数值模拟软件FLUENT对单火源、双火源及三火源条件下巷道内烟气扩散过程与流动规律进行了数值模拟与分析,结果表明:多火源燃烧时火源之间存在强烈的相互作用,同时,火源之间的空气卷吸作用和热辐射反馈作用使得燃烧程度更为剧烈。

To analyze the effect of multi ignition on the fire smoke flow in coal mine roadway,a transport trough was taken as the research object and the numerical simulation software FLUENT was used to study the flue gas diffusion process and flow laws of single ignition source,double ignition sources and three ignition sources in roadway fire. The analysis results show that there is a strong interaction between the fire sources in the combustion of multi ignition condition,at the same time,the effect of air entrainment and heat radiation feedback between the fire ignition get the combustion more severe.