树木作为多孔介质吸附颗粒物的模拟研究  

Simulation Study of Particulate Matter Adsorbed by Greening Trees as Porous Media

作　　者：张晶晶[1] 邹惠芬[1] 李绥[1] 杨二东 魏冉[1] Zhang Jing-jing Zou Hui-fen Li Sui Yang Er-dong Wei Ran

机构地区：[1]沈阳建筑大学市政与环境工程学院,沈阳110168

出　　处：《建筑技术开发》2016年第8期20-22,共3页Building Technology Development

基　　金：国家自然科学基金项目(51208312)

摘　　要：为改善小区的环境,合理利用自然资源,为居住者提供舒适健康的人居环境,主要研究PM2.5的来源,并采用Fluent模拟软件对3种典型建筑布局(并列式、错列式和围合式)的小区的风环境以及PM2 5的扩散情况进行模拟,并在污染源附近设置绿化树木,将树木作为多孔介质分别对小区环境进行模拟,对比分析绿化埘木对颗粒物的吸附阻滞情况结果表明,设置绿化树木后较之前,小区内风环境得到了改善,且PM2.5的浓度明显降低。In order to improve the residential environment,make full use of natural resources,and provide a comfortable and healthy living environment for the occupants,this paper mainly studies the source of PM2.5 and combines Fluent simulation software to simulated three kinds of typical building layout（paratactic type,wrong column type and jewels） around the village of wind environment and the spread of PM2.5 condition.At the same time,it also sets up green trees near the sources of pollution,which is regarded as porous media,respectively,to simulate the environment of the village,further to comparatively analysis the adsorption retardation of greening trees.The results show that the wind environment has improved greatly after setting greening trees,and the concentration of PM2.5decreased significantly,which provides a theoretical basis for district planning.

关 键 词：Fluent模拟 建筑布局 多孔介质 PM2.5 

分 类 号：X512[环境科学与工程—环境工程]