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

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.

关键词： environmental wind natural smoke exhaust the total additional pressure coefficient critical speed numerical simulation

作者: LI Xiubo XU Zhisheng NI Tianxiao

作者单位: Institute of Disaster Prevention Science & Safety Technology,Central South University,Changsha 41007 Institute of Disaster Prevention Science & Safety Technology,Central South University,Changsha 41007

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 828-832

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）