INFLUENCE OF WIND DIRECTION ON NATURAL VENTILATION OF APARTMENT BUILDINGS

The paper presents wind tunnel investigations of the influence of wind direction on the natural ventilation of buildings. Tests were carried out on models of an apartment building complex, made to 1:100 scale, consisting of six adjacent buildings, and on a natural-scale isolated roof ventilation shaft outlet. Walls and roof pressure distribution we re obtained and difference in pressure values between windows and the ventilation shaft outlets on the roof have been calculated. It was fou nd that some wind directions decrease chimney draught. Aerodynamic int erference of neighbouring buildings also decreases chimney draught. Th e influence of the location of an adjacent building on the ventilation of the building under consideration was tested.