Title: A study of heat transfer effects on air pollution dispersion in street canyons by numerical simulations

Authors: Nicolas Moussiopoulos, Ioannis Ossanlis, Photios Barmpas

Addresses: Department of Mechanical Engineering, Laboratory of Heat Transfer and Environmental Engineering, Aristotle University, P.O. Box 483, 54124 Thessaloniki, Greece. ' Department of Mechanical Engineering, Laboratory of Heat Transfer and Environmental Engineering, Aristotle University, P.O. Box 483, 54124 Thessaloniki, Greece. ' Department of Mechanical Engineering, Laboratory of Heat Transfer and Environmental Engineering, Aristotle University, P.O. Box 483, 54124 Thessaloniki, Greece

Abstract: This study investigated thermal effects on the flow and dispersion of pollutant in urban street canyons. A heating module was introduced into the micro scale model MIMO for describing the thermal exchange between the air in the street and the buildings. Furthermore, the influence of wall temperatures and building shading on the in-street flow and its vertical transport is discussed. Results from numerical simulations that are performed with MIMO are compared with corresponding results from numerical simulations performed with the commercial CFD code CFX-TASCflow.

Keywords: urban street canyons; heat transfer; thermal effects; pollutant dispersion; dispersion modelling; simulation; air pollution; air quality; wall temperatures; building shading.

DOI: 10.1504/IJEP.2005.007661

International Journal of Environment and Pollution, 2005 Vol.25 No.1/2/3/4, pp.131 - 144

Published online: 31 Aug 2005 *

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