ANALYSIS OF A 3-DIMENSIONAL VENTILATION FLOW - EXPERIMENTAL VALIDATION ON A WATER SCALE-MODEL OF NUMERICAL SIMULATIONS

Laboratory and numerical experiments were conducted in order to study the flow within an isothermal parallelepipedic test room. The air is i njected through a complex diffuser (made of 84 nozzles) near the ceili ng and is evacuated through a rectangular exist just below the inlet. Measurements were performed on a hydraulic model at 1/6 scale. The par ameters were determined according to a Reynolds similitude. Both laser Doppler anemometry and flow visualization were used. Numerical simula tions were carried out using the EOL-3D software developed at the Inst itute National de Recherche et de Securite. A comparison between exper imental results and numerical predictions is presented.