Effect of Slope on Smoke Propagation in an Urban Traffic Tunnel Fire

摘要：

The effect of slope on smoke propagation in an urban traffic tunnel fire scenario under natural ventilation is studied by large eddy simulation. For a tunnel of range from 0°to 5°slope, the transverse and lognitudinal temperature distributions of smoke layer, the highest temperature on tunnel ceiling are computed. These numerical results are compared with those of tunnel with corresponding horizontal runnel. It has been found that the slope has a great effect on smoke temperature along longitudinal direction. Especially in the ascending part downstream of fire source, smoke layer descends quickly. The highest temperature position on tunnel departures from the upper point of fire source on downhill side. But the highest temperature of 5％ slope does not vary greatly by comparison of that in tunnel of zero slope. These results can provide reference on fire protection design of urban traffic tunnel.

关键词： urban traffic tunnel large eddy simulation smoke tunnel slope

作者: LI Yanfeng ZHAO Mingxing FU Chengyun LI Junmei FAN Hongming

作者单位: College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100024, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 593-598

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）