基于液体缩尺模型的地铁活塞风与站台送风耦合  

Coupling Airflows between Subway Piston Wind and Platform Jet on Liquid Scale Model Test

作　　者：刘佳妮[1] 沈丽[1] 唐道发[1] 罗成[1] 杜晓明[1] 

机构地区：[1]上海理工大学环境与建筑学院,上海助理工程师200093

出　　处：《城市轨道交通研究》2013年第8期81-85,共5页Urban Mass Transit

摘　　要：为了获得地铁活塞风与站台送风射流的相互耦合规律,在满足相似准则的情况下,搭建地铁站台液体缩尺模型试验台。用不同颜色的水分别模拟进入站台后的隧道活塞风和站台送风射流,从而获得两股流体耦合轨迹;并通过LGY—Ⅲ型多功能智能流速仪测量耦合气流各测量断面处的流速分布规律。运用控制变量法,分别分析在变活塞风速度或站台送风射流速度工况下,耦合流体的流线、速度的基本变化特性。研究结果表明:在地铁实际运行过程中,可以适当地减小活塞风量并增大站台送风量,以达到舒适节能的目的。In order to get the fundamental characteristics of the coupling airflows between subway piston wind and plat-form air jet, a liquid scale model test is carried out which has met the related similarity criterion. In this test, water is used to reflect the variation rules of the piston wind and air jet on subway platform, and the LGY-Ⅲ intelligent multi-functional anemometer is used to obtain the airflow velocity on the measuring sections. The basic rules under different conditions of piston wind and platform air jet ven-tilation are analyzed by using control of variables, the re-sult shows that subway system could achieve the goal of en-ergy-saving and higher comfort level by reducing the piston wind and increasing the platform air jet appropriately in ac-tual operation.

关 键 词：活塞风 站台送风射流 缩尺模型 液体示踪 耦合气流 

分 类 号：U231.5[交通运输工程—道路与铁道工程]