| 多层建筑火灾烟气运动和回燃的数值模拟研究 |
| |
| 引用本文： | 张娜,袁树杰,毕昆.多层建筑火灾烟气运动和回燃的数值模拟研究[J].中国安全生产科学技术,2009,5(2). |
| |
| 作者姓名： | 张娜 袁树杰 毕昆 |
| |
| 作者单位： | 1. 安徽理工大学能源与安全学院,淮南,232001;煤矿安全高效开采省部共建教育部重点实验室,淮南,232001
2. 中国科学技术大学火灾科学国家重点实验室,合肥,230026 |
| |
| 摘 要： | 为了解多层建筑火灾的蔓延发展和烟气运动,应用大涡模拟(LES)方法对多层建筑火灾发生过程进行数值模拟分析,模拟不同工况下走廊和各楼层中火灾烟气运动和温度的变化情况.尤其针对内部含有竖井的多层建筑,考虑到烟囱效应对火灾发展和烟气蔓延的影响,分别设置自然排烟和机械排烟的实验工况,分析电梯间通风口在自然排烟和机械排烟状况下火灾的发展和烟气运动.通过分析温度和能见度数据,发现合理安排机械排烟能够争取更多人员逃生时间.对于多层建筑火灾中发生的回燃现象进行了原因分析.
|
| 关 键 词： | 多层建筑火灾 烟气运动 FDS模拟 自然排烟 机械排烟 回燃 |
Smoke flow and backdraft of a multi-storey building fire based on numerical simulation |
| |
| ZHANG Na,YUAN Shu-jie,BI Kun.Smoke flow and backdraft of a multi-storey building fire based on numerical simulation[J].Journal of Safety Science and Technology,2009,5(2). |
| |
| Authors: | ZHANG Na YUAN Shu-jie BI Kun |
| |
| Institution: | 1.School of Energy and Safety;Anhui University of Science and Technology;Huainan 232001;China;2.The Key Laboratory of Safe and Efficient Exploitation in Coal Mining of Ministry of Education;China;3.State Key Laboratory of Fire Science;University of Science & Technology of China;Hefei 230026;China |
| |
| Abstract: | In order to learn fire expand and smoke flow in a multi-storey building,the fire process was simulated and analyzed by use of LES method.Change of smoke concentration and temperature in staircase and aisle with different fire conditions were simulated.Especially with vertical shaft,considering the influence of stack effect,setting natural and mechanical smoke exhaust separately,analyzing the fire spread and smoke movement at vent of elevator hoist way under different conditions.It was found that appropriate... |
| |
| Keywords: | multi-storey building fires smoke flow fire dynamics simulator natural smoke exhaust mechanical smoke exhaust backdraft |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
