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带竖井的特长铁路隧道热环境数值模拟

发表时间:2013-07-31  浏览量:1035  下载量:504
全部作者: 雷波,袁中原,马国川
作者单位: 西南交通大学机械工程学院;中国建筑西南设计研究院有限公司
摘 要: 采用一维非稳态数值模拟方法研究带竖井的特长铁路隧道热环境。对竖井通风量进行计算,分析隧道竖井的通风特性。分别对无竖井隧道和带竖井的隧道内空气温度进行数值模拟计算,通过与无竖井隧道进行对比,分析带竖井特长铁路隧道的热环境特性,进而探讨列车速度对隧道热环境的影响。结果表明:竖井引入的外界冷空气流量峰值可达到700 m3/s,隧道可以有效利用竖井引入的外界冷空气对隧道空气进行冷却,隧道空气温度随列车速度的增大而增大。
关 键 词: 通风与空调工程;隧道热环境;竖井;空气温度;数值模拟
Title: Numerical simulation of thermal environment in long railway tunnel with shaft
Author: LEI Bo, YUAN Zhongyuan, MA Guochuan
Organization: School of Mechanical Engineering, Southwest Jiaotong University; China Southwest Architectural Design and Research Institute Company Limited
Abstract: In this paper, one dimensional unsteady numerical simulation was established to investigate the thermal environment in long railway tunnel with shaft. The air volume rate through shaft was simulated to study the ventilation condition of shaft. In order to investigate the thermal environment characteristics in long railway tunnel with shaft, air temperature distributions that calculated by simulation program were compared between tunnel with shaft and without shaft. Moreover, the effect of train speed on thermal environment in tunnel was researched in the study. The results showed that the maximum air volume flow rate introduced through shaft was 700 m3/s. Those introduced ambient air could be used to cool the high temperature air in tunnel. The air temperature in tunnel increased with the train speed increase.
Key words: ventilation and air-conditioning project; thermal environment of tunnel; shaft; air temperature; numerical simulation
发表期数: 2013年7月第14期
引用格式: 雷波,袁中原,马国川. 带竖井的特长铁路隧道热环境数值模拟[J]. 中国科技论文在线精品论文,2013,6(14):1353-1358.
 
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