Velocity Distribution in the Flow from a Wall-Mounted Diffuser in Rooms with Displacement Ventilation

The paper describes experiments with wall-mounted air terminal devices. The airflow from an air terminal device will influence the thermal comfort of the occupants and it is therefore important to develop an expression for this flow. The velocity at the floor is influenced by the flow rate to the room, by the temperature difference and the type of diffuser. The flow is stratified at large temperature differences. The paper shows the development of an expression for the velocity distribution in the vicinity of the floor. It is shown that openings between obstacles placed directly on the floor will generate a flow similar to the air movement in front of a diffuser. An expression for the velocity distribution is given in the paper