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Pollutant diffusion in the idealized build-up area
Šeděnková, Hana ; Jaňour, Zbyněk ; Leitl, B.
The essence of the problem consist in the way of pollutant diffusion in the urban build-up area. The measurement of the concentration field of the emission from the point (chimney) and line (street) source in the model of the idealized urban build-up area was done in the boundary layer wind tunnel. Dependence on the location of this source against model and also dependence on the geometric setting of the model (both density of buildings and location of street canyons) was found.
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Proudění uvnitř idealizované městské zástavbě
Bezpalcová, Klára ; Harms, F. ; Leitl, B. ; Jaňour, Zbyněk
The regular obstacle array of the Mock Urban Setting Test (MUST) fiedl site in the Utah West Desert (USA) has been replicated in the large boundary layer wind tunnel at University of Hamburg. The trials run during the field campaign were repeated in the wind tunnel as well as additional measurements of flow.The strong flow inhomogeneities were observed on the vertical profiles of shear stress as well as on the horizontal mean flow for different array orientation.
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Problém velikosti ulice
Bezpalcová, Klára ; Jaňour, Zbyněk
Two main types of tasks are investigated: Simplified, generalised situations and direct solution of geometric complex situations. The methods of the urban type inflow simulation, small scale flow simulation and dispersion simulation including a line source model modelling had to be developed in both cases witin wind tunnel modelling.
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