| 陈胜朋,梁栋,莫善军.楼梯间电动车火灾数值模拟研究[J].火灾科学,2018,27(2):100-106. |
| 楼梯间电动车火灾数值模拟研究 |
| Numerical simulation of motorcycle fire in stairwell |
| 投稿时间：2017-05-28 修订日期：2017-07-31 |
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| DOI：10.3969/j.issn.1004-5309.2018.02.05 |
| 基金项目:广东省重点实验室建设项目（2014B030301034）；广东省科技计划项目（2013B031500008）；广州市科技计划项目（2014Y2-00069） |
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| 中文关键词: 电动车火灾 数值模拟 FDS |
| 英文关键词:Motorcycle fire Numerical simulation FDS |
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| 中文摘要: |
| 楼梯井电动车火灾呈典型的烟囱效应现象，短暂燃烧，浓烟迅猛，往往危害很大。模拟结合全尺寸实验结果，基于FDS软件对电动车在楼梯井内燃烧进行动态仿真，相关数据进行对比分析。研究结果表明：物理实验数据与数值模拟数据比较吻合，楼梯间平均温度370℃左右，最高温度超过1000℃，楼梯间浓烟毒性很大；火焰卷吸处上方的无量纲温度随楼梯井竖直高度的增加而减小，同一区域的近墙处温度较高；火灾后期在喷淋作用下，CO浓度在火灾熄灭阶段有所增加。 |
| 英文摘要: |
| Motorcycle fire in a stairwell is a typical phenomenon that is controlled by the stack effect. The combustion of a motorcycle fire is transient and hazardous with production of a mass of toxic gases. Combined with the results of full-scale experiments, numerical simulation is conducted by using FDS to investigate the combustion of motorcycle fire in a stairwell. It is indicated that the simulation and experimental results have good agreement. For the simulation cases, the average temperature of stairwell is approximate 370 ℃, while the maximum temperature is over 1000 ℃. The gases of stairwell are hazardous. With the increase of vertical height in the stairwell, the dimensionless temperature above flame entrainment decreases gradually. The temperature near the wall in the same area is higher. Under the influence of spray, the CO concentration increases slightly in the fire extinguishing phase. |
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