Multiple steady fluid flows in a slot-ventilated enclosure

Present work numerically investigates three-dimensional non-linear aerodynamic structures of airflow in a slot-ventilated compartment with three ports. A numerical code based on Reynolds average Navier–Stokes equations and Reynolds stress turbulence model was validated, and successfully conducted for simulating the airflow in the studied room. Numerical results are particularly presented to illustrate the effects of the inlet airflow velocity, enclosure width, supplying ports elevation and Reynolds number on the multiple flow patterns and the associated ventilation flow rate and blowing-axial momentum decay for equal-magnitude opposite jet flows. It is shown that the room airflow rate and the shift of jet flow interface can be promoted or inhibited, depending strongly on the jet velocity, enclosure width and elevation of supplying ports.