高层建筑垂直方向污染物传播的实验与模拟研究  

Experimental and Numerical Study on Vertical Contaminants Transport in High-rise Building

作　　者：高乃平[1] 贺登峰[2] 牛建磊[3] 董志华[3] 

机构地区：[1]同济大学机械工程学院,上海200092 [2]北京市公用工程设计监理公司,北京100026 [3]香港理工大学屋宇设备工程系,中国香港

出　　处：《建筑科学》2008年第10期47-50,54,共5页Building Science

摘　　要：在高层建筑开窗自然通风的情况下,下层窗户的排风会由于浮升力的作用经由上层窗户部分进入同侧的上层房间,造成污染物的垂直传播。本文通过现场示踪气体的测量和对气态和颗粒态污染物的模拟发现,在无风或微风条件下,约有5%的下层排风污染物会进入上层房间。此结论与香港SARS爆发时不同楼层的感染分布是一致的。For naturally ventilated high-rise residential buildings, the exhaust air coming out of the upper part of the window of a floor may re-enter the lower part of the open-window at the immediate upper floor. In this study, field measurement and computational fluid dynamics （CFD） simulation to quantify the re-entry ratio were carried out. It was around 5% in windless conditions. This result was in line with the infections distributions at different floors during SARS outbreak in Hong Kong.

关 键 词：污染物传播 高层建筑 实验 模拟 

分 类 号：TU241.8[建筑科学—建筑设计及理论] TU834.8