TIGHTENING UP THE EXISTING BUILT-UP AREA BY A TALL BUILDING WITH REGARD FOR WIND BRACE ON VENTILATION SYSTEMS OF LOW BUILDINGS
The article presents theoretical generalized and new decisions of an urgent scientific and technical problem concerning the wind effects when streamlining a tall building on ventilation system of surrounding low built up area with regard of leeward waves development in wind flow. The author investigates physical dimensions of aerodynamic characteristics of the wind flow in boundary layer wind tunnel, using six component tube of Central Aerodynamic Institute. There was developed the technique of scaled modelling. We defined the dependence between the wind pressure coefficient and the influence of Reynolds number and turbulence intensity on it. The calculation system SCADA with high productivity was developed. This allowed fulfill scaled experimental research of model buildings in boundary layer wind tunnel of Donbas National Academy of Civil Engineering and Architecture. The aim of the research was to investigate wind pressure field and visualize the flow in the area of wind brace. In the result there was developed the technique of defining the limits of wind brace area.