Steady-state flows in an enclosure ventilated by buoyancy forces assisted by wind (Q2706940)

A ventilation process is analyzed from both theoretical and experimental point of view. The device consists of an enclosure of parallelipipedic form, supplied by point source of buoyancy placed or the floor and equipped with two ventilation openings placed at a high level on the leeward face, and at a low level on the windward face. When the point source on the floor is active, a raising plume of fluid reaches the ceiling of the enclosure and spread horizontally, creating a layer of buoyant fluid. The difference in hydrostatic pressure between the upper and lower openings inside the device is less than the pressure difference at the same heights in the external ambient fluid. So, a fluid flow appears in the enclosure: the buoyant fluid flows out through the upper openings, and an equal volume of ambient fluid enters through the lower openings. The authors establish a mathematical model for the described fluid motion, analyse it theoretically and experimentally, and present the obtained results in plots and diagrams.