摘要
提出了按具有运动污染源一维非恒定流模型计算隧道内气流速度和污染物浓度分布的方法，并对新龙门隧道进行了数值模拟，阐述了内燃机产生的有害气体的危害及组成成分，并按牵引功率计算出排污量；分析了影响污染物浓度分布的各种因素。对列车在洞内交会地点、射流风机工作时间及风机的送风方向进行了综合比较，提出了有利工况。
A one dimensional unsteady flow model which has a moving pollutant source is proposed for calculating air flow velocity and pollutant distribution inside Xinlongmen railway tunnel.The harmfulness and the composition of the pollutant gases are expounded.The amount of pollutant is calculated according to the tractive power of locomotives.The main factors incorporated in the analysis, which affect the pollutant distribution, are the meeting position of trains in tunnel, the working time of jet fans and the direction of air flows. Based on the numerical analysis, an advantageous operating mode is suggested.
出处
《西南交通大学学报》
EI
CSCD
北大核心
1997年第2期203-207,共5页
Journal of Southwest Jiaotong University
关键词
隧道
通风
数值模拟
污染物浓度
射流通风
ventilation of railway tunnel
pollutant concentration
numerical analysis
