Impact of Urban-Area Geometry on Pollution Ventilation

0427476 - ÚT 2015 RIV GB eng A - Abstract
Kukačka, Libor - Fuka, V. - Nosek, Štěpán - Jaňour, Zbyněk
Impact of Urban-Area Geometry on Pollution Ventilation.
Proceedings of Abstracts 9th International Conference on Air Quality - Science and Application. Hatfield: University of Hertfordshire, 2014 - (Mitto, T.; Fallmann, J.; Mikolajczyk, U.; Suppan, P.; Singh, V.; Sokhi, R.). s. 183-183. ISBN 978-1-909291-20-1.
[International Conference on Air Quality - Science and Application /9./. 24.03.2014-28.03.2014, Garmisch-Partenkirchen]
R&D Projects: GA ČR GAP101/12/1554
Institutional support: RVO:61388998
Keywords : wind tunnel * large eddy simulation * atmospheric boundary layer * air pollution * scalar flux * urban-area ventilation * urban-area geometry * street canyon
Subject RIV: DG - Athmosphere Sciences, Meteorology

In order to quantify the influence of building geometry on the vehicle pollution ventilation within street canyons, a wind tunnel experiment and a large eddy simulation (LES) was performed. A model of an idealised urban area with a line source was designed with different building arrangements. Concentration, horizontal and vertical advective and turbulent pollution fluxes were computed from the measured data as ventilation characteristics. A domination of advective pollution transport was determined within street canyons. The turbulent transport was significant in vertical direction within as well as above the built-up area. The ventilation intensity was evaluated for each model arrangement separately.
Permanent Link: http://hdl.handle.net/11104/0233216