A benchmark for numerical scheme validation of airborne particle exposure in street canyons

Marini, S., Buonanno, G., Stabile, L., & Avino, P. (2015) A benchmark for numerical scheme validation of airborne particle exposure in street canyons. Environmental Science and Pollution Research, 22(3), pp. 2051-2063.

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Abstract

Measurements of particle concentrations and distributions in terms of number, surface area, and mass were performed simultaneously at eight sampling points within a symmetric street canyon of an Italian city. The aim was to obtain a useful benchmark for validation of wind tunnel experiments and numerical schemes: to this purpose, the influence of wind directions and speeds was considered. Particle number concentrations (PNCs) were higher on the leeward side than the windward side of the street canyon due to the wind vortex effect. Different vertical PNC profiles were observed between the two canyon sides depending on the wind direction and speed at roof level. A decrease in particle concentrations was observed with increasing rooftop wind speed, except for the coarse fraction indicating a possible particle resuspension due to the traffic and wind motion. This study confirms that particle concentration fields in urban street canyons are strongly influenced by traffic emissions and meteorological parameters, especially wind direction and speed.

Impact and interest:

4 citations in Scopus
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5 citations in Web of Science®

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ID Code: 88769
Item Type: Journal Article
Refereed: Yes
DOI: 10.1007/s11356-014-3491-6
ISSN: 0944-1344
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 29 Oct 2015 03:19
Last Modified: 29 Oct 2015 03:19

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