Research on the Influence of Environmental Wind on Natural Smoke Exhaust During Building Fire

被引：0
|
作者：
Li Xiubo [1 ]
Xu Zhisheng [1 ]
Ni Tianxiao [1 ]
机构：
[1] Cent S Univ, Inst Disaster Prevent Sci & Safety Technol, Changsha 410075, Hunan, Peoples R China
来源：
PROGRESS IN SAFETY SCIENCE AND TECHNOLOGY, VOL VII, PTS A AND B | 2008年 / 7卷
关键词：
environmental wind; natural smoke exhaust; the total additional pressure coefficient; critical speed; numerical simulation;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Environmental wind is one of the main driving forces which discharge fire smoke outside the buildings that adopt the method of natural smoke exhaust. The additional pressure difference caused by environmental wind on the buildings' surface was analyzed and the total additional pressure coefficient was proposed as control parameter in order to evaluate the efficiency of environmental wind on natural smoke exhaust. In the instance-a theatre-by CFD, a software used for the numerical simulation research on the course of natural smoke exhaust, the effects of the environmental wind on natural smoke exhaust in different combinations of vents and the main reasons of bidirectional flow in the smoke vent openings were studied. It can be referred for designing of natural smoke exhaust system.
引用
收藏
页码：828 / 832
页数：5
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