室外交通污染物对临街建筑室内环境的影响分析  

Impact analysis of outdoor traffic pollutant on indoor environment of buildings close to street

作　　者：朱继宏[1] 李德英 

机构地区：[1]北京建筑大学环境与能源工程学院,北京100044 [2]北京市"供热供燃气通风及空调工程"重点实验室,北京100044

出　　处：《环境污染与防治》2015年第11期1-5,10,共6页Environmental Pollution & Control

基　　金："十二五"国家科技支撑计划资助项目(No.2014BAJ01B03)

摘　　要：采用计算流体动力学(CFD)模拟和CONTAM模型结合的方法,分析室外典型交通污染物CO对临街建筑室内环境的影响。结果表明,来流风向、建筑间距和建筑排布形式均对临街建筑室内CO浓度分布产生影响。来流风向角(θ)为15°时,室内CO浓度最低,而θ为45°时,CO浓度最高;随着建筑间距增加,室内CO浓度不断降低;交错排布的建筑形式下,室内CO浓度明显低于对称排布的建筑形式。临街建筑室内CO浓度逐时变化与室外街道峡谷内车流量变化保持一致。A combined method of computational fluid dynamics （CFD） simulation and CONTAM model was proposed to study the effect of typical traffic pollution CO on the indoor environment of buildings close to street. Re- sults showed wind direction, building distance and building arrangement had effect on indoor CO concentration distri- bution in buildings close to street. Indoor CO concentration was the highest with the wind direction angle （θ） 15°, while lowest with θ=45°. The increased building distance was beneficial to the decrease of indoor CO concentration. The indoor CO concentration under staggered arrangement was obviously lower than symmetrical arrangement. Hour- ly variation of indoor CO concentration in buildings close to street was consistent with the variation of traffic flow in street canyon.

关 键 词：交通污染物 室内环境 计算流体动力学模拟 CONTAM模型 

分 类 号：X51[环境科学与工程—环境工程] X734