Effect of Wind Direction on Airflow and Pollutant Dispersion Inside a Street Intersection

The airflow and pollutant dispersion inside a street intersection under six different wind directions were evaluated using the computational fluid dynamics approach. The numerical results reveal that the flow and pollutant dispersion inside a street intersection are greatly influenced by the incomin...

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Veröffentlicht in:Nature environment and pollution technology 2015-06, Vol.14 (2), p.355-355
Hauptverfasser: Lihua, Huang, Yuandong, Huang, Wenrong, He, Liming, Huang, Yixin, Ren
Format: Artikel
Sprache:eng
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Zusammenfassung:The airflow and pollutant dispersion inside a street intersection under six different wind directions were evaluated using the computational fluid dynamics approach. The numerical results reveal that the flow and pollutant dispersion inside a street intersection are greatly influenced by the incoming wind direction: 1. The air exchange between the outer flow and the intersection interior is the strongest under the wind direction angles of plus or minus 10 degrees, while it is the weakest for the wind direction angle of 45 degrees; and 2. the pollutants from the intersection centre at the ground level are transported into the different streets depending on the various wind directions.
ISSN:0972-6268
2395-3454