Abstract
A numerical approach for local analysis of Wet Bulb Globe Temperature (WBGT) index in an occupied rectangular space is presented in this paper. Mechanical ventilation is considered for the crowded space. A CFD air ow model coupled with a multi-segment human thermoregulation model is employed to simulate the basic environmental parameters with having regard to the heat rejection from the occupants. An iterative algorithm is established for indoor WBGT estimation. 3-D distribution of the WBGT index is thus predicted based on the simulation results of the coupling model of air ow and occupants. 3-D WBGT analysis can be useful in local thermal stress assessment for individual occupants, as well as helpful in evaluating and designing HVAC systems for built environments.
