Smoke movement in multi-storey buildings using CUsmoke

摘要

Advancements in computer technology and tendency to replace prescriptive fire and building codes with performance-based codes have promoted the development of computer fire models to simulate fire and smoke movement. In this research a two-zone model CUsmoke (Carleton University smoke model) is used to simulate fires with steady or linear growth heat release rates (HRRs) in a single-compartment and in a two-compartment building, as well as fires with non-linear HRR in a multi-compartment multi-storey building. The comparisons between the CUsmoke predictions and the experimental data showed that the model is capable of predicting smoke movement in single and multi-compartment, multi-storey buildings with a corridor and a stair shaft. The model also provides good predictions of the upper layer temperature for non-flashover fires with steady HRR in a single compartment. Additionally, the CUsmoke predictions of concentration of O_2 and CO_2 in the growth phase of fires and the predicted interface heights in the fire compartment compared well with the experimental measurements.