摘要
目的利用冷却阻尼风控制列车进站带来的活塞风,减少活塞风对站台层热环境的影响.方法采用计算流体动力学数值模拟的方法,以站台0.5 m和1.7 m高处的平面作为分析面,模拟冷却阻尼风喷口安装高度为5.4 m和4.9 m垂直射流对活塞风的控制效果.结果得到两种工况下,站台温度分布图及截面上点的速度变化曲线,以及列车进站过程中进入站台的活塞风量.结论降低冷却阻尼风喷口高度,在一定程度上改善了对活塞风的控制,降低了地铁车站总的空调冷负荷.
Aiming at decreasing the heat environment of platform from piston wind by using cooling damping wind to control piston wind. Computational fluid dynamics （CFD） method is adopted in this paper, the 0.5 m and 1.7 m plane of the platform are selected for analytic plane. The pattern that contrasts simulation on using cooling damping wind to control subway piston wind under different nozzle hight. The temperature distribution and velocity curve of the platform, and the mass flow rate of piston wind when the train is drawing in the platform are obtained. The effect on the platform and the quantity of piston wind decreases in some degree. The total load of the platform decreases.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
2008年第4期667-670,共4页
Journal of Shenyang Jianzhu University：Natural Science
基金
建设部研究开发项目(2008-k5-7)
关键词
冷却阻尼风
活塞风
射流
喷口
cooling damping wind
piston wind
jet
nozzle
