Large-eddy simulation of reactive pollutant dispersion over street canyons of different aspect ratios
文献类型：会议论文
| 作者 | Du, T.Z.; Liu, Chun-Ho; Zhao, Y.B. |
| 出版日期 | 2014 |
| 会议名称 | ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting, FEDSM 2014 |
| 会议地点 | Chicago, Illinois, USA |
| 英文摘要 | In urban areas, pollutants are emitted from vehicles then disperse from the ground level to the downstream urban canopy layer (UCL) under the effect of the prevailing wind. For a hypothetical urban area in the form of idealized street canyons, the building-height-to-street-width (aspect) ratio (AR) changes the ground roughness which in turn leads to different turbulent airflow features. Turbulence is considered an important factor for the removal of reactive pollutants by means of dispersion/dilution and chemical reactions. Three values of aspect ratio, covering most flow scenarios of urban street canyons, are employed in this study. The pollutant dispersion and reaction are calculated using largeeddy simulation (LES) with chemical reactions. Turbulence timescale and reaction timescale at every single point of the UCL domain are calculated to examine the pollutant removal. The characteristic mechanism of reactive pollutant dispersion over street canyons will be reported in the conference.(6 refs) |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/6044]  |
| 专题 | 深圳先进技术研究院_数字所 |
| 作者单位 | 2014 |
| 推荐引用方式 GB/T 7714 | Du, T.Z.,Liu, Chun-Ho,Zhao, Y.B.. Large-eddy simulation of reactive pollutant dispersion over street canyons of different aspect ratios[C]. 见:ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting, FEDSM 2014. Chicago, Illinois, USA. |
入库方式： OAI收割
来源：深圳先进技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。