街道峡谷内污染物对流扩散模拟分析  

Simulation analysis of convection-diffusion of pollutants in street canyons

作　　者：郭振宇[1] 赵静[1] 张中涛[1] 亓伟[1] 

机构地区：[1]山东建筑大学热能工程学院,山东济南250101

出　　处：《节能》2012年第11期18-21,2,共4页Energy Conservation

基　　金：山东省自然基金项目(项目编号:ZR2011EEM011);国家自然基金项目(项目编号:51276102)

摘　　要：采用数值模拟和现场实验观测相结合的方法,对街道峡谷内汽车污染物的扩散规律进行研究。在进行数值模拟时,依据污染物对流扩散的基本理论,对不同风速下污染物的对流扩散特征进行模拟分析。将结果与现场观测结果进行比较,从而验证了数学模型的正确性,同时也获得了城市街道峡谷内污染物对流扩散规律。研究结果可为城市街道规划建设、建筑高度和密度控制、机动车尾气的排放控制和交通流量控制提供科学依据。Combining of numerical simulation and the experimental observation method research the diffusion law of automobile pollutants in street canyons.Based on the basic theory of convective diffusion of pollutants,analyse the pollutant under different wind speed convection-diffusion characteristics.And the results were compared with field observations,which not only verify the correctness of the mathematical model and also the law of the convection-diffusion of pollutants in urban street canyons.The results for the city street planning and construction,building height and density control,vehicle exhaust emissions control and traffic control to provide the scientific basis.

关 键 词：街道峡谷 污染物 对流扩散 数值模拟 

分 类 号：X51[环境科学与工程—环境工程]