Study of Heavy Gas Pollutants' Dispersion in Street Canyon Terrain
文献类型：期刊论文
| 作者 | Nie, Xiaoye; Fan, Yuyan; Gao, Hong; Lin, Qiang |
| 刊名 | PROCESSES
 |
| 出版日期 | 2021 |
| 卷号 | 9期号:10 |
| 关键词 | SIMULATION FLOW CFD VALIDATION LEAKAGE |
| 英文摘要 | This study focused on heavy gas dispersion under the terrain conditions of street canyons. The effects of street aspect ratio and height ratio were investigated, and the influence of environmental wind speed in the typical ideal street canyon terrain was explored. The results indicated that the surrounding flow field distributions in street terrains were dominated by higher buildings. In addition, when the building height was held constant, the flow field was affected by the joint influence of the two isolated buildings. The interception effect of the street canyon on upstream pollutants declined with the decrease in the street canyon's aspect ratio. In addition, when the height ratios were different, a large quantity of upstream pollutants accumulated on the windward side of higher buildings. The relative concentration per unit area inside the canyon was affected by the air circulation inside and outside the canyon and the size of the dispersion space. The increase in the environmental wind speed promotes the entry of pollutants into the street while aggravating the overall dispersion of the pollutants. Therefore, the emergence of the most unsafe wind speeds caused most of the pollutants to gather in the street canyons. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21422]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Gao, H (corresponding author), Tianjin Key Lab Chem Proc Safety & Equipment Tech, Tianjin 300072, Peoples R China. 2.Lin, Q (corresponding author), Tianjin Univ, Zhejiang Inst, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Nie, Xiaoye,Fan, Yuyan,Gao, Hong,et al. Study of Heavy Gas Pollutants' Dispersion in Street Canyon Terrain[J]. PROCESSES,2021,9(10). |
| APA | Nie, Xiaoye,Fan, Yuyan,Gao, Hong,&Lin, Qiang.(2021).Study of Heavy Gas Pollutants' Dispersion in Street Canyon Terrain.PROCESSES,9(10). |
| MLA | Nie, Xiaoye,et al."Study of Heavy Gas Pollutants' Dispersion in Street Canyon Terrain".PROCESSES 9.10(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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