| 天井宽度及进深对火灾烟气运动的影响 |
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| 引用本文： | 陈龙飞,袁满,陈艳秋.天井宽度及进深对火灾烟气运动的影响[J].消防科学与技术,2020,39(5):628-632. |
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| 作者姓名： | 陈龙飞 袁满 陈艳秋 |
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| 作者单位： | 1.西南交通大学 地球科学与环境工程学院，四川 成都 611756；2.应急管理部四川消防研究所，四川 成都 610036 |
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| 基金项目： | 公安部消防局应用创新项目（2017XFCX17） |
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| 摘 要： | 采用FDS火灾数值模拟的方法,分析不同天井宽度及进深对带外廊开口天井建筑中天井底部与顶部压差、天井内温度及外廊CO浓度等参数的影响,研究高层住宅建筑开口天井宽度及进深对烟囱效应的影响。设定3种火源功率、4种开口天井宽度、4种开口天井进深,共计48组工况进行计算分析,研究发现,开口天井内由于侧面与外界连通,烟囱效应较弱,天井宽度和天井进深对烟囱效应没有明显影响。天井宽度和天井进深越大,天井内温度、外廊CO浓度均降低。
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| 关 键 词： | 开口天井 外廊 火灾烟气 烟囱效应 FDS |
Influence
of patio width and depth on smoke movement of fire |
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| CHEN Long-fei,YUAN Man,CHEN Yan-qiu.Influence
of patio width and depth on smoke movement of fire[J].Fire Science and Technology,2020,39(5):628-632. |
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| Authors: | CHEN Long-fei YUAN Man CHEN Yan-qiu |
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| Affiliation: | 1.
Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong
University, Sichuan Chengdu 611756, China; 2. Sichuan Fire Research Institute
of MEM, Sichuan Chengdu 610036, China |
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| Abstract: | FDS
fire numerical simulation method was used to analyze the influence of different
width and depth of the patio on the pressure difference between the bottom and
top of the patio, the temperature inside the patio and CO concentration in the
corridor, to study the influence of the width and depth of the patio on the
stack effect in high-rise residential buildings. Considering 3 kinds of fire
source power, 4 kinds of open patio width and 4 kinds of open patio depth, 48
working conditions were set to carry out the analysis. It was found that the
stack effect is weak due to the side connectivity in the open patio, and the
width and depth of the patio have no obvious effect on the stack effect. The
greater the width of the patio and the deeper the patio, the lower the
temperature inside the patio and the CO concentration in the corridor. |
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| Keywords: | open patio outer corridor fire smoke stack effect FDS |
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