Simple model of the Urban Atmospheric Boundary Layer (UABL)
by Zbynek Janour, Klara Bezpalcova, Hana Sedenkova
International Journal of Environment and Pollution (IJEP), Vol. 25, No. 1/2/3/4, 2005

Abstract: The horizontally homogeneous atmospheric boundary layer over a rough surface with a large roughness length z0 has been investigated to model the simplest cases of the Urban Atmospheric Boundary Layer (UABL) over a flat plain. It has been demonstrated that the nondimensional profiles of the horizontal Reynolds stresses of eddy viscosity and of velocity defect components are universal and independent on surface characteristics. On one side, the results of numerical simulation are compared with radio soundings launched over urban areas. Because of the lack of additional information about experiment data sets, only qualitative comparison has been performed. On the other side wind tunnel experiments in the Institute of Thermomechanics were carried out.

Online publication date: Wed, 31-Aug-2005

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