Detailed measurements of room air distribution for evaluating numerical simulation models

Two-dimensional isothermal airflows were measured in a full-scale room [24ft×18ft×8ft]. Measurements included the flow patterns of the room air, the profiles of air velocity and turbulent kinetic energy at the diffuser, and velocities, turbulent kinetic energies, and temperatures at 205 locations within the room. The measurements grid was non-uniform, with higher grid density in flow regions where relatively high velocity gradients were expected (e.g., the diffuser jet region). The data show the effects of sampling rates and sampling periods on the experimental results, the effects of internal heat load on the airflow pattern, as well as the difference between the diffuser jet region and the occupied region in terms of turbulent kinetic energy and power spectrums. Such detailed measurements are useful for evaluating numerical simulation models as well as for understanding the behavior of the room ventilation airflows.