|本期目录/Table of Contents|

[1]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):28-31.
　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):28-31.
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多层建筑火灾烟气运动和回燃的数值模拟研究()
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
5
期数:
2009年2
页码:
28-31
栏目:
出版日期:
2009-04-30

文章信息/Info

Title:
Smoke flow and backdraft of a multistorey building fire based on numerical simulation
文章编号:
1673-193X(2009)-02-0028-04
作者:
张娜1; 2; 袁树杰1; 2; 毕昆3
1.安徽理工大学能源与安全学院2.煤矿安全高效开采省部共建教育部重点实验室3.中国科学技术大学火灾科学国家重点实验室
Author(s):
ZHANG Na1; 2;  YUAN Shujie1; 2;  BI Kun3
1.School of Energy and Safety, Anhui University of Science and Technology2.The Key Laboratory of Safe and Efficient Exploitation in Coal Mining of Ministry of Education3.State Key Laboratory of Fire Science, University of Science & Technology of China
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
Keywords:
multistorey building fires;  smoke flow;  fire dynamics simulator;  natural smoke exhaust;  mechanical smoke exhaust;  backdraft
分类号:
X928.03
DOI:
-
文献标志码:
A
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。
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 mechanical smoke exhaust can obtain more time for people escape, on the basis of analyzing temperature and visibility data. Backdraft occurrence in multistorey building fire was analyzed.

参考文献/References:

［1］姜蓬,邱榕,蒋勇.基于数值模拟的某大厦特大火灾过程调查［J］.燃烧科学与技术,2007,13(1):76~80Jiang Peng, Qiu Rong, Jiang Yong. Investigation of Mansion Fire Based on Numerical Simulation［J］. Journal of Combustion Science and Technology,2007,13(1):76~80［2］McGrattan K. B, Baum H. R, Rehm R. G. Large Eddy Simulations of Smoke Movement［J］. Fire Safety Journal,1998,30(2):161~178［3］Yanga R., Weng W. G., Fana W. C., et al. Subgrid scale laminar flam let model for partially premixed combustion and its application to backdraft simulation［J］. Fire Safety Journal.2005(40):81~98［4］Weng W. G., Fan W. C. Critical condition of backdraft in compartment fires:a reduced scale experimental study［J］. Journal of Loss Prevention in the Process Industries 2003(16):19~26.［5］范维澄，孙金华，陆守香等.火灾风险评估方法学［M］.北京:科学出版社，2004Fan Weicheng, Sun Jinhua, Lu Shouxiang, et al. Methodology of Fire Risk Evaluation［M］. Beijing:Science Press,2004［6］孙建军,李烈,路世昌等.高层建筑管道井内烟气运动大涡模拟［J］.中国安全科学学报,2006,16(9):40~44Sun Jianjun, Li Lie, Lu Shichang, et al. Large Eddy Simulation of Smoke Movement in the High Rise Building Pipe Shaft［J］. China Safety Science Journal,2006,16(9):40~44第5卷第2期2009年4月中 国 安 全 生 产 科 学 技 术Journal of Safety Science and TechnologyVol.5 No.2Apr. 2009文章编号：1673-193X(2009)-02-0032-04

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备注/Memo

备注/Memo:
收稿日期：20090129
更新日期/Last Update: