Effect of supply Reynolds number and room aspect ratio on flow and ceiling heat-transfer coefficient for mixing ventilation

► Forced convection CFD study of room ventilation using mixing air-distribution system. ► Sensitivity of results to model parameters is examined. ► Results are compared with experimental data and turbulent flat plate correlation. ► Ceiling hav increases with Red and decreases with increasing room L/H aspect ratio. ► Flow pattern is independent of Red but is dependent on L/H.