| 公路隧道火灾烟气特性数值模拟分析 |
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| 引用本文： | 易赛莉.公路隧道火灾烟气特性数值模拟分析[J].公路交通科技,2010,27(1). |
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| 作者姓名： | 易赛莉 |
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| 作者单位： | 上海应用技术学院,上海,200235 |
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| 基金项目： | 上海市教育委员会重点学科建设项目资助(J51502) |
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| 摘 要： | 本文针对典型的隧道类型,基于计算流体动力学模型,通过数值模拟试验和理论分析,对隧道火灾的发生、发展状况以及烟气的扩散和运动规律进行了研究,分析了不同风速和火灾规模状况下的烟气层的运动状态,空间温度场的分布和变化规律以及火灾对人员疏散安全的影响等问题。同时,研究了风速、火源功率以及截面形状等关键参数对火灾烟气及温度变化的影响。研究表明,纵向通风速度对沿隧道长度方向的烟气层高度的分布有着很大的影响,圆形截面可以储存更多的烟气并能有效降低隧道底层的温度。该结论可为我国公路隧道防火措施的制定提供有益的参考。
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| 关 键 词： | 隧道工程 烟气特性 计算流体动力学 临界风速 火灾规模 |
Analysis on Characteristics of Fire Smoke in Highway Tunnel by CFD Simulation |
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| YI Saili.Analysis on Characteristics of Fire Smoke in Highway Tunnel by CFD Simulation[J].Journal of Highway and Transportation Research and Development,2010,27(1). |
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| Authors: | YI Saili |
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| Institution: | Shanghai Institute of Technology;Shanghai 200235;China |
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| Abstract: | Based on the computational fluid dynamics(CFD) simulation model,the regularity of fire spread and smoke movement occurred in typical tunnel was studied by numerical simulation experiments and theory analysis.The regular pattern of smoke movement and the distribution pattern of spatial temperature field under different wind speeds and scales of fire as well as the fire influence on the personnel evacuation were investigated in detail.The influence of key parameters,including wind speed,fire source power and ... |
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| Keywords: | tunnel engineering smoke characteristics CFD critical wind speed fire scale |
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