A COMPARISON OF THE USE OF FIRE ZONE AND FIELD MODELS FOR SIMULATING ATRIUM SMOKE-FILLING PROCESSES

The smoke filling process for the three types of atrium spaces commonl y built in Hong Kong are simulated using the two types of deterministi c pre model: zone models and field models. The zone models used are th e FIRST, CFAST, and CCFM. VENTS models developed at the Building and F ire Research Laboratories, NIST, USA and the NBTC one-room model of FI RECALC developed at CSIRO, Australia. The field model is a self-develo ped fire field model based on computational fluid dynamics theories. T he results predicted by the two approaches are very similar. Simulatio n using a field model requires much more computing time compared with the use of a zone model, bur it can give more detailed information on the fire-induced pow and temperature fields. Copyright (C) 1996 Elsevi er Science Ltd.