| 带竖井长大公路隧道火灾通风的CFD分析 |
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| 引用本文： | 冯炼,王泽宇. 带竖井长大公路隧道火灾通风的CFD分析[J]. 公路, 2007, 0(4): 193-196 |
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| 作者姓名： | 冯炼 王泽宇 |
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| 作者单位： | 西南交通大学机械工程学院,成都市,610031 |
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| 摘 要： | 针对带竖井的长大公路隧道,建立了隧道火灾物理、数学模型,并运用CFD的方法进行数值求解,用连续方程、动量方程、能量方程及气体组分方程描述其气流流动状态。并采用受浮力影响的湍流模型方程,选取秦岭终南山特长公路隧道作为计算模型,分析了不同通风风速下,隧道与竖井内的速度场和温度场,从而较全面地了解隧道和竖井内的火灾特性和烟气发展规律。分析表明3 m/s的通风风速对于防止出现回流,缩小火灾影响范围是比较理想的。
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| 关 键 词： | 隧道 火灾 通风竖井 数值模拟 速度场 温度场 |
| 文章编号： | 0451-0712（2007）04-0193-04 |
| 修稿时间： | 2006-11-10 |
CFD Anlysis of Fire Ventilation in Long Highway Tunnel with Shaft |
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| FENG Li-an,WANG Ze-yu. CFD Anlysis of Fire Ventilation in Long Highway Tunnel with Shaft[J]. Highway, 2007, 0(4): 193-196 |
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| Authors: | FENG Li-an WANG Ze-yu |
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| Affiliation: | Colleage of Mechanical Engineering,Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | According to long hinghway tunnel with shaft,physical-mathematical model is set,and CFD is used to make numerically solution,the air flow situation is described by equations of continuity,momentum,energy and component of air.Turbulent equation which considerate buoyancy effect is used as Qinling Zhongnanshan Highway Tunnel for calculation model.Then velocity and temperature field are analyzed in tunnel and shaft in different wind velocities in order to knew general development law of fire and smoke in tunnel and shaft.The analysis shows that is perfect in preventing backflow and reducing fire field with the ventilation velocity of 3 m/s. |
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| Keywords: | tunnel fire ventilation shaft. numerical simulation velocity field temperature field |
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