高层建筑防烟空气幕设计参数的数学模型

应用科学学报 ›› 1999, Vol. 17 ›› Issue (3): 371-376.

高层建筑防烟空气幕设计参数的数学模型

何嘉鹏¹, 王东方¹, 王健², 姜正良³, 鄢建平³

1. 南京建筑工程学院;
2. 同济大学;
3. 南京航空航天大学

收稿日期:1997-09-12 修回日期:1998-10-30 出版日期:1999-09-30 发布日期:1999-09-30

The Mathematical Model of Design Parameter for the Smoke Preventing Air Curtain in the High-Rise Building

HE JIAPENG¹, WANG DONGFANG¹, WANG JIAN², JIANG ZHENGLIANG³, YAN JIANPING³

1. Nanjing Architectural & Civil Engineering Institute, Nanjing 210009;
2. Tongji University, Shanghai 200092;
3. Nanjing University of Aeronautics & Astronautics, Nanjing

Received:1997-09-12 Revised:1998-10-30 Online:1999-09-30 Published:1999-09-30

摘要/Abstract

摘要： 通过对烟气流动的机理分析,分别讨论了火灾时温度引起的气体膨胀、高层建筑的烟囱效应、室外风力和建筑物内空调及通风系统对建筑物内部空气流动的影响.用理论方法建立前室门处的流场,根据流线流量原理,提出用空气幕控制烟气的扩散,并在前人试验研究的基础上,导出防烟空气幕设计参数的数学模型.

关键词: 防烟, 空气幕, 流函数, 势流

Abstract: In this paper through analyzing smoke-flow field theoretically, it is discussed that the effect of air flow in a high-rise building is as a result of gas expansion by the temperature, the chimney effect, the outdoor wind power and a ventilation and air conditioning system when firing. The flow field at the staircase door is theoretically found. The way in which the diffusion of smoke is controlled is advanced according to the principle of flow line-rate of flow and based on the previous experimental researches by others, the mathematical mode of design parameter for the smoke preventing air curtain is inferred.

Key words: preventing-smoke, potential flow, air curtain, flow functions

何嘉鹏, 王东方, 王健, 姜正良, 鄢建平. 高层建筑防烟空气幕设计参数的数学模型[J]. 应用科学学报, 1999, 17(3): 371-376.

HE JIAPENG, WANG DONGFANG, WANG JIAN, JIANG ZHENGLIANG, YAN JIANPING. The Mathematical Model of Design Parameter for the Smoke Preventing Air Curtain in the High-Rise Building[J]. Journal of Applied Sciences, 1999, 17(3): 371-376.