Title: Particle re-suspension in street canyon with two-way traffic

Authors: J. Pospisil, M. Jicha

Addresses: Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2, 61669 Brno, Czech Republic. ' Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2, 61669 Brno, Czech Republic

Abstract: The paper focuses on determination of the wind threshold velocity of re-suspension (at the height of 10 m) and the near-ground air threshold velocity of re-suspension (at the height of 0.25 m) for particles of size 10 µm in a particular urban street canyon with two-way traffic. The wind threshold velocity of re-suspension is derived from a long-term measurement carried out in the city of Brno. A numerical modelling based on the finite volume method is used for a detail study of the relation between a wind velocity above buildings roofs and a near-ground air velocity in the street canyon.

Keywords: particulate matter; CFD; computational fluid dynamics; modelling; particle re-suspension; urban street canyons; wind threshold velocity; wind speed; finite volume method; air quality; air pollution; Brno; Czech Republic; traffic emissions.

DOI: 10.1504/IJEP.2011.038427

International Journal of Environment and Pollution, 2011 Vol.44 No.1/2/3/4, pp.271 - 279

Published online: 07 Feb 2011 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article