空气幕对列车车厢火灾烟气的影响规律研究  

Study on influence of air curtain on fire smoke in train compartment

作　　者：施惠明 方盛荣 汪洪焦 SHI Hui-ming;FANG Sheng-rong;WANG Hong-jiao(Huzhou Fire and Rescue Division,Zhejiang Huzhou 313000,China;Zhengzhou Tobacco Research Institute of CNTC,Henan Zhengzhou 450001,China)

机构地区：[1]湖州市消防救援支队,浙江湖州313000 [2]中国烟草总公司郑州烟草研究院,河南郑州450001

出　　处：《消防科学与技术》2021年第4期467-470,共4页Fire Science and Technology

摘　　要：为研究防烟空气幕对列车车厢火灾烟气的影响规律,建立了CRH2A动车组一节车厢的内部模型,利用FDS模拟软件对列车车厢火灾时期的烟气流动规律进行数值模拟。依据给定火灾场景下烟气水平运动速度设置空气幕水平切向速度,通过改变空气幕安装角度,研究车厢内部火灾时,在空气幕作用下车厢空间各区域烟气层高度的变化,温度及CO浓度的分布情况。结果表明:火源功率为3 MW时,空气幕安装角度θ=45°,水平与垂直方向速度均为4 m/s时,防烟效果较好。In order to study the influence of smoke prevention air curtain on the fire smoke of train compartment,the internal model of one car of CRH2A EMU was established,and FDS was used to simulate the smoke flow caused by the train compartment fire.According to the smoke horizontal movement speed under the given fire scenario,the horizontal tangential velocity of the air curtain was set.By changing the installation angle of the air curtain,the change of the height of the smoke layer,the distribution of temperature and CO concentration in each area of the compartment space under the action of the air curtain were studied.The results showed that when the fire power is 3 MW,the installation angle of air curtain is 45°and the horizontal and vertical velocities are 4 m/s,the smoke control effect is better.

关 键 词：防烟空气幕 列车车厢火灾 烟气流动 数值模拟 

分 类 号：X913.4[环境科学与工程—安全科学] TU834.2[建筑科学—供热、供燃气、通风及空调工程]