Autor:
Merah, Aissa ; Noureddine, Abdelkader
Współtwórca:
Tytuł:
Reactive pollutants dispersion modeling in a street canyon
Tytuł publikacji grupowej:
Temat i słowa kluczowe:
street canyon ; reactive pollutant ; computational fluid dynamics (CFD)
Abstract:
Reactive pollutant dispersion in a 3-D urban street canyon is numerically investigated using a computational fluid dynamics (CFD) code (Ansys-CFX) and includes transport equations for NO, NO2, and O3 with simple photochemistry. An area emission source of NO and NO2 was considered in the presence of background O3 with an ambient wind perpendicular to the along-canyon direction. ; The results showed that the magnitude of NOx (NO+NO2) concentrations on the leeward side of the upstream buildings was much larger than the windward side of the downstream building, due to the entrainment and dispersion of traffic emissions by the primary vortex. The reverse is the case for ozone with higher concentrations on the windward side compared to the leeward side. The model has been validated against no-reactive pollutant experimental data of the wind tunnel experiments of Hoydysh and Dabberdt.
Wydawca:
Zielona Góra: Uniwersytet Zielonogórski
Data wydania:
Typ zasobu:
Format:
DOI:
Strony:
Źródło:
IJAME, volume 24, number 1 (2019)