| 双线铁路隧道内空气污染浓度的数值模拟研究 |
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| 引用本文： | 冯炼,赵海恒,等.双线铁路隧道内空气污染浓度的数值模拟研究[J].西南交通大学学报,1996,31(5):521-525. |
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| 作者姓名： | 冯炼 赵海恒 |
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| 作者单位： | 西南交通大学机械工程学院 |
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| 基金项目： | 铁道部科学发展计划项目《双线铁路隧道运营射流通风技术研究》子课题。 |
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| 摘 要： | 本文提出了按一维带有运动点源的不稳定空气动力学模型来描述双线铁路隧道内污染物浓度分布，并采用控制容积平衡法导出相应对应的离散化方程，建立了隧道内污染物浓度分布的数值计算方法，采用此方法能方便地计算出隧道内污染物浓度分布及多次行车后的累积浓度、平均浓度。根据不同运行图可定量提出达到卫生标准所需的通风方式、通风时间和行车密度。
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| 关 键 词： | 铁路 隧道内 空气污染 数值模拟 双线铁路 |
Numerical Simulations of Air Pollution Concentration Inside Double Track Railway Tunnels |
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| Feng,Lian Zhao,Haiheng Huang,Meirong.Numerical Simulations of Air Pollution Concentration Inside Double Track Railway Tunnels[J].Journal of Southwest Jiaotong University,1996,31(5):521-525. |
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| Authors: | Feng Lian Zhao Haiheng Huang Meirong |
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| Abstract: | This paper proposes a one dimension transient aerodynamic model to describe the pollutant distribution inside double track railway tunnels.A moving point source term is added to the governing equation to simulate locomotive emission.Based on control volume discretization a numerical procedure is developed with which the accumulated pollutant concentration and the time average pollutant concentration can be obtained conveniently.The procedure can be used to study how the various parameters,such as fan capacity,ventilation time and train running schedule,affect the ventilation system behaviour and to optimize railway tunnel ventilation system design. |
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| Keywords: | railway tunnels ventilation contaminant concentration |
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