Ventilation of two rooms interconnected thorough a bottom opening

TOVAR, RAMON; CAMPO GARRIDO, C A; LINDEN, PAUL F; THOMAS, LUIS P

Chicago, Estados Unidos

Congreso; 58th Annual Meeting of the Division of Fluid Dynamics, American Physical Society; 2005

American Physical Society

Ventilation in two rooms of the same size experimentally using an acrylic tank divided by an interior wall with. This wall has a slot or interior opening that connects both rooms is studied. A buoyancy source, generated by the injection of a salt solution, is located at the bottom of the forced room to generate a turbulent plume. An outlet vent is located successively in three positions of the unforced room: at the bottom, middle and top. In each position, the vent is opened to three different sizes. The two-room system is submerged in a large water tank that represents the external ambient. The density field is indirectly measured by means of light attenuation with dye and directly by sample extractions. In the first case, with the outlet vent located at the top, the flow of buoyant fluid travels in a plume attached to the interior wall and then in a gravity current attached to the roof, until it exits through the vent. In this case the buoyant fluid does not mix with the fluid in the unforced room and there is no a clear buoyant layer formation there. However, when the vent is small enough, the buoyancy layer grows until it reaches an equilibrium height.