地铁车站列车火灾烟气蔓延规律模拟分析

Simulation Analysis of the Smoke Flow Regularity in Train Fire at Metro Station

设定列车停在站台停车范围内时列车中部车厢发生火灾,根据郑州市地铁1号线隧道及部分典型站台的建筑设计建立物理模型,采用数值模拟软件STAR-CCM+,运用CFD(计算流体力学)场模拟的方法,采用燃烧模型的火源设置方法,在一定工况下对列车火灾进行数值模拟分析,对火灾时的烟气温度场、速度场和CO浓度场进行深入研究。研究结果可为列车在地铁车站发生火灾时的人员安全逃生提供理论依据。

Providing a train fire happens in the middle carriage when the train stops at the platform,a physical model is established according to the architectural design of Zhengzhou metro Line 1 tunnel and some typical platforms. Then,the CFD( computational fluid dynamics) field simulation method,software STAR CCM +,and a fire source setting of combustion model are adopted to carry out the numerical simulation of train fire under certain working conditions,the characteristics of smoke flow temperature field,velocity filed and CO concentration field are studied,which may provide the theoretical background for passenger evacuation in train fire.