中国计量学院学报2011，Vol.22Issue(4)：322-326,5.
街道峡谷内细微颗粒物扩散特性的DPM数值模拟
Numerical simulation of fine particles dispersion in urban street canyon based on DPM model
摘要
Abstract
Based on the discrete phase model (DPM), a simulation was carried out to study fine particles dispersion and their concentration in different kinds of typical street canyon. In the simulation, a standard k-E two-equation model was used as turbulence model. The numerical results indicated that due to urban wind flow, the air in the street canyon presented vortex flow, dispersion and distribution of fine particles were changed. The concentration showed 'climbing wall effect'. The aspect ratio of street canyon had crucial effect on fine particle concentration distribution. Moreover, the concentration in street canyon with stepped-up notch configuration is lower than others.关键词
街道峡谷/离散相模型/数值模拟/细微颗粒物Key words
street canyon/ DPM/ numerical simulation/fine particles分类
资源环境引用本文复制引用
付志民,孙在,杨文俊,谢小芳..街道峡谷内细微颗粒物扩散特性的DPM数值模拟[J].中国计量学院学报,2011,22(4):322-326,5.基金项目
浙江省自然科学基金资助项目(No.Y6090607) （No.Y6090607）
