Exploration of CFD models for personalized ventilation air terminal devices

Whilst Computational Fluid Dynamics (CFD) has been popularly applied in indoor air andventilation research, most Personalized Ventilation (PV) research is based on experiments.This study is an attempt to seek validation of PV experimental data with results fromnumerical models of Air Terminal Device (ATD), since the ATD is crucial in the simulation ofPV system.The CFD study involves a systemic study and comparison of various simulation methods ofPV ATD, aimed to develop PV ATD models for future whole room PV system simulation.Boundary Conditions (BC) are obtained from an elaborate set of measurements obtained witha PV ATD at one workstation. In this study, PV ATD is simulated and validated by directdescription method and box method. It is found that both methods cannot accurately predictPV air velocity. The method proposed out of this study is a development of direct descriptionmethod and it substantially improves simulation accuracy, and has acceptable agreement withthe measurement.