摘要
为了研究建筑物不同屋顶结构对街道峡谷中汽车排放污染物扩散影响特性,采用RNGk-ε湍流模型方程及污染物对流扩散方程对其进行了二维数值模拟,得到了街道峡谷中机动车排放氮氧化物的流场和浓度场,从而证明了建筑物不同屋顶结构对街道峡谷中汽车排放污染物扩散确有明显影响作用。
Two-dimensional numerical simulation of pollutant dispersion was conducted using the RNG k-ε turbulence model and the gas diffusion equation aiming to study the effect of different roof structures of street buildings on pollutant dispersion of automobiles in an urban street canyon, The airflow and the concentration of the pollutant gas （nitrogen oxides） released by automobiles in the canyon were analysed. Results prove that different roof structures of buildings have markedly influences on the pollutant dispersion of automobiles in the urban street canyon.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2007年第6期44-47,共4页
Journal of Northeast Forestry University
基金
黑龙江省交通厅重点科研项目:汽车排放污染物的道路铺装材料降解技术研究
关键词
城市街道峡谷
数值模拟
氮氧化物
Urban street canyon
Numerical simulation
Nitrogen oxides
