Experiments and calculations were operated to determine air flow distribution in a test room (9.9 m2) naturally ventilated through adjustable louvers overlooking outside. Air enters at the bottom (opening surgace 0.07 m2) and is exhausted at the top of the room (opening surface 0.12 m2). Air pressure and velocities across the opening allow to estimate wind pressure coefficients. Results show in particular the influence of wind on the internal air flow. Good agreement was found between measurements and calculations.
The wind approaching a building provided with openings has to make a choice; i.e. either to flow around the building or to flow through the openings. This selection procedure is dependent on both the external structure (shape) of the building and on its internal structure. In this paper the parameters controlling this selection procedure are explored. In order to clarify the basic process, simplified building models have been studied with a combination of wind tunnel studies, visualisation and CFD predictions.
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