Fluid mechanical dispersion of airborne pollutants inside urban street canyons subjecting to multi-component ventilation and unstable thermal stratifications
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- 作者：Shuo-Jun Meia ; Cheng-Wei Liua ; Di Liub ; liudi66@163.com" class="auth_mail" title="E-mail the corresponding author ; Fu-Yun Zhaoa ; fyzhao@whu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Han-Qing Wangc ; Xiao-Hong Lia
- 关键词：Air exchange rate ; Building clusters ; Combined wind-buoyancy-driven flows ; Pollutant retention time ; Urban street air environment
- 刊名：Science of the Total Environment
- 出版年：2016
- 出版时间：15 September 2016
- 年：2016
- 卷：565
- 期：Complete
- 页码：1102-1115
- 全文大小：4003 K
文摘
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Ground secondary vortex produced by the flow separation and stratification
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Pollutants are accumulated at ground level due to the intervals of buildings.
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Multi-vortex flow regime could delay pedestrian level pollutant dilution.
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AER and Ri could be correlated by the polynomial functions.
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Retention time and Ri could be correlated for one-vortex flow regime.