Fig. 3.

Comparison of (a) Mean velocity and (b) Turbulent intensity profiles imposed at the inlet (x= −5 H) and obtained from the simulations near the outlet (x = 14 H). Circles are the approaching wind profiles obtained from the wind tunnel experiment [28], which were also the inlet boundary conditions used in simulations. The simulated profiles near the outlet were obtained with different models: yellow dashed lines were obtained with the standard k–ε model with the presence of the cubic building; blue solid lines and dotted lines were results obtained with the improved k–ε model with the presence of the cubic and cruciform buildings respectively. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)