Název:
Charakteristiky proudění a difúze velikosti mikroměřítka uvnitř městské zástavby
Překlad názvu:
Microscale flow and diffusion characteristics inside the urban area
Autoři:
Kukačka, Libor ; Brechler, Josef (oponent) ; Jaňour, Zbyněk (vedoucí práce) Typ dokumentu: Diplomové práce
Rok:
2009
Jazyk:
cze
Abstrakt: Dispersion of pollutants in the atmosphere of urban areas is the important task in environmental sciences. The main goal was the quantitative studying of a flow in a symmetrical urban built-up area depending on a running on flow direction. There was given a theoretical base of the physical modeling of the atmospheric boundary layer in this work. The measurement was done with a model of the urban build-up area at a scale of 1:200 in the aerodynamic wind tunnel of the IT AS CR, v.v.i. in Nový Knín. The requirements to the similarity to a real atmospheric boundary layer and a model boundary layer in the wind tunnel were accomplished. Velocity fields, concentration fields and fields of scalar uxes were measured in the area of a rectangular intersection. Results of the experiment showed significant sensitivity of the velocity field about the running on flow direction that extensively inuenced ventilation of street canyons.