交通源颗粒物对小区内环境的影响  

Impact of Traffic Exhausting Particles on Community Environment

作　　者：乔文佳 贺启滨 齐亚茹[1] 刘艳华[1] 

机构地区：[1]西安交通大学人居学院 [2]深圳市建筑科学研究院有限公司

出　　处：《建筑热能通风空调》2015年第2期37-41,共5页Building Energy & Environment

基　　金："十二五"国家科技支撑计划(2012BAJ09B01);"十二五"国家科技支撑计划(2012BAJ06B03)

摘　　要：利用湍流k-ε模型及离散相模型(DPM)研究了小区外交通源(线源)排放颗粒物对小区内环境的影响。对比分析了有、无围墙情况下,小区内环境受交通源污染物的影响状况。结果表明:围墙对颗粒物有很好的阻挡作用。因围墙的存在,颗粒物大部分积聚在小区外、围墙附近。虽然部分颗粒物能够进入小区,由于其浓度很低,小区环境基本不受影响。但是,无围墙存在时,颗粒物无阻挡地进入小区,小区受交通源颗粒物的影响很大,特别是前排建筑物的迎风面和绕流区域。In this paper, the impact of traffic exhausting particles on community environment was simulated using the standard- turbulence model and Dispersed Phased Model（DPM）. The community near street which with and without fences are simulated. The results show that fences have a barrier function to particles： most of the particles accumulate nearby the area of fences outside the community for fences exist. Minority particles enter into the community, while the impact on the community environment is little. The particles will enter into the community completely for no fences exist. The community environment will be greatly impact by the traffic exhausting particles, especially the front buildings windward and bilateral area.

关 键 词：交通源颗粒物 小区内环境 围墙 离散相模型 

分 类 号：X73[环境科学与工程—环境工程] X513