Pedestrian-level wind driven pollutant dispersion and exposure risk during vehicle unloading around a semi-open industrial building

被引：2

作者：

Chu, Yujie ^{[1
]}

Liu, Jianlin ^{[1
]}

Zhang, Yongzhi ^{[1
]}

Zhong, Jiading ^{[1
]}

Song, Gaoju ^{[2
]}

He, Yang ^{[1
]}

Diao, Yongfa ^{[1
]}

Shen, Henggen ^{[1
]}

机构：

[1] Donghua Univ, Coll Environm Sci & Engn, Shanghai, Peoples R China

[2] Sippr Engn Grp Co Ltd, Zhengzhou, Peoples R China

来源：

JOURNAL OF BUILDING ENGINEERING | 2024年 / 95卷

基金：

中国国家自然科学基金;

关键词：

Semi-open industrial building; Induced airflow; Pedestrian-level wind (PLW); Pollutant dispersion; Personal intake fraction; INTAKE FRACTION; SIMULATION; PARTICLES; STREET; IMPACT;

D O I：

10.1016/j.jobe.2024.110302

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Vehicle unloading causes dust emission during the fall of raw materials in a semi-open industrial building. The dust is further dispersed around buildings via natural wind, which has rarely been investigated. This study examines the effects of approaching wind and induced airflow on wind and pollutant fields around a semi-open industrial building during vehicle unloading. Four influencing factors are assessed, namely, the induced airflow velocity, continuity, proportion of induced airflow, and direction of approaching wind. Turbulence model and numerical methods are applied after validations with benchmark wind tunnel experiments, and the correlation coefficients are above 0.83. The personal intake fraction (P_IF) is utilized to quantify human exposure risk. Results indicate that both the induced airflow velocity and proportion of airflow are positively related to the pollutant dispersion ranges. Unloading at different positions as a continuity variation also affects the concentration distributions. Specifically, unloading at the central position more effectively dilutes pollutants than does unloading at the outer position of the building. Pollutant dispersion extends up to 10H under a 90 degrees wind direction, whereas the maximum average P_IF occurs under a 135 degrees wind direction. The findings provide a useful reference for further building design to reduce pollutant dispersion around semi-open industrial buildings.

引用

页数：18