%0 Journal Article
%T 基于FDS的列车车箱火灾烟气数值模拟<br>Numerical Simulation of Fire-induced Smoke in Train Compartment Based on Fire Dynamics Simulation
%A 余明高
%A 陈静
%A 苏冠锋&lt
%A br&gt
%A YU Minggao
%A CHEN Jing
%A SU Guanfeng
%J 西南交通大学学报
%D 2017
%R 10.3969/j.issn.0258-2724.2017.04.023
%X 为了研究列车车厢内部火灾烟气的流动规律，以CRH2A动车组的一节车厢为原型，按照车厢车门开启状况、火源功率及空气幕出口风速分别设定9种工况，运用火灾模拟软件FDS对各工况下车厢内的烟气流动进行数值模拟，计算分析各工况下烟气扩散过程、车厢内部各区域能见度、烟气温度的分布及变化趋势.研究结果表明：车门关闭时烟气下降速度快，烟气温度高，烟气层高度低，能见度差；火源功率越大，车厢内实际热释放速率越大；综合考虑防烟的有效性和经济性，在车厢内部火灾功率为0.2 MW时，应开启车厢内部车门；空气幕可有效阻挡烟气蔓延，其出口速度为5 m/s时挡烟效果较好.<br>： In order to examine the flow law of the fire-induced smoke in a train compartment, the study took the internal space of one compartment of the high-speed train CRH2A as a research object. Nine sets of working conditions were examined according to the states of the carriage doors, fire source power, and discharge velocity of the air curtain. The smoke flow law was numerically simulated under these different conditions using the fire dynamics simulation software. The smoke diffusion process, visibility within each area, and temperature distribution and tendency were calculated and analyzed for the internal fire. The results showed that when the doors were closed, the smoke temperature was relatively higher, the smoke layer descended more rapidly, and the visibility was lower than when the doors were open. In addition, a higher value for the fire power resulted in a higher value for the actual total heat releasing rate. Under the conditions that the fire source power was 0.2 MW and the doors were open, the best value for the outlet velocity of the air curtain was 5 m/s in consideration of the effectiveness of the preventive smoke and economic factors. These research results have specific theoretical and practical significances in relation to the guidelines for the efficient prevention and control of a train fire
%K 车厢火灾
%K 空气幕
%K 烟气控制
%K 数值模拟
%K &lt
%K br&gt
%K compartment fire
%K air curtain
%K smoke control
%K numerical simulation
%U http://manu19.magtech.com.cn/Jweb_xnjd/CN/abstract/abstract12473.shtml