摘要
地铁列车在运行过程中的车门启闭频繁,车厢热环境极易受到车门启闭的影响。首先采用实测与模拟结果相对比的方式验证了数值模拟的可靠性;其次,对不同车门开启时长工况下的地铁车厢热环境进行了模拟分析。结果表明,随着车门开启时长的增加,车厢内温度场受车门开启时长的影响越大,车厢内的速度场虽有波动,但波动很小;车厢热环境在车门关闭后重新恢复稳态所需要的时间也随之增加,且车门开启时间增量一定时,车厢热环境恢复稳态所需的时间增量越来越小。文章可为现有地铁车厢热环境的精细化控制提供一定的理论基础和参考依据。
The doors of metro train are opened and closed frequently in the process of operation, and the thermal environment of the carriage is easily affected by the opening and closing of the doors. In this paper, the reliability of the numerical simulation is verified by comparing the measured results with the simulation results. Secondly, the thermal environment of the subway car with different door opening time is simulated and analyzed. The results show that with the increase of door opening time, the influence of door opening time on the temperature field in the car is more and more serious. Although the velocity field in the car fluctuates, the fluctuation is very small. The time required for the car thermal environment to recover to steady state after the door is closed is also increased. When the door opening time increment is fixed, the time needed for the car thermal environment to recover to steady state is smaller and smaller. The research in this paper can provide theoretical basis and reference for the fine control of the thermal environment of the existing subway cars.
作者
闻旭强
郑文亨
WEN Xu-qiang;ZHENG Wen-heng
出处
《节能》
2020年第8期110-113,共4页
Energy Conservation
关键词
地铁车厢
热环境
计算流体动力学
车门开启时长
站台温度
subway car
thermal environment
computational fluid dynamics
door opening time
platform temperature
