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Smoke Spreading Simulation of High-Rise Office Building Based on Evacuation Analysis
Fire safety during operational hours in high-rise office buildings is always a headache because of the difficulty of evacuation. The fire dynamics simulation (FDS) can provide important guidance on how the smoke from the fire may spread in the building, while to capture this transient development of smoke and airflow movement, the numerical simulation of FDS is normally very computationally extensive and time-consuming. To avoid unnecessary simulation hours for the different floors, this study suggests conducting an overall evacuation simulation before the smoke spreading simulation to keep track of the evacuation time for each floor, and this evacuation time for each floor can be used as the total simulation hours in FDS. This procedure of simulation has been demonstrated for a real high-rise office building six-storey with a footprint area of 2340 m2. It has an expected number of occupants of about 1125, two staircases on each end of the main structure and one staircase for the extended part, and six entrances/exits on the ground floor. Two behaviour modes have been considered in the evacuation simulation, including the mode specified by the Society of Fire Protection Engineers (SFPE mode) and the steering mode. After the evacuation time of each floor has been evaluated, the FDS simulation is conducted thereafter, and two fire source locations have been considered in the simulation, one in the atrium of the building and one in the corridor of the second floor. The spread of smoke on different floors have been evaluated and compared through the soot visibility, and the CO concentration at the critical evacuation times. The steps to conducting the evacuation simulation before the FDS simulations suggested in this study provide an efficient procedure for the smoke spreading evaluation in high-rise buildings.
Smoke Spreading Simulation of High-Rise Office Building Based on Evacuation Analysis
Fire safety during operational hours in high-rise office buildings is always a headache because of the difficulty of evacuation. The fire dynamics simulation (FDS) can provide important guidance on how the smoke from the fire may spread in the building, while to capture this transient development of smoke and airflow movement, the numerical simulation of FDS is normally very computationally extensive and time-consuming. To avoid unnecessary simulation hours for the different floors, this study suggests conducting an overall evacuation simulation before the smoke spreading simulation to keep track of the evacuation time for each floor, and this evacuation time for each floor can be used as the total simulation hours in FDS. This procedure of simulation has been demonstrated for a real high-rise office building six-storey with a footprint area of 2340 m2. It has an expected number of occupants of about 1125, two staircases on each end of the main structure and one staircase for the extended part, and six entrances/exits on the ground floor. Two behaviour modes have been considered in the evacuation simulation, including the mode specified by the Society of Fire Protection Engineers (SFPE mode) and the steering mode. After the evacuation time of each floor has been evaluated, the FDS simulation is conducted thereafter, and two fire source locations have been considered in the simulation, one in the atrium of the building and one in the corridor of the second floor. The spread of smoke on different floors have been evaluated and compared through the soot visibility, and the CO concentration at the critical evacuation times. The steps to conducting the evacuation simulation before the FDS simulations suggested in this study provide an efficient procedure for the smoke spreading evaluation in high-rise buildings.
Smoke Spreading Simulation of High-Rise Office Building Based on Evacuation Analysis
Environ Sci Eng
Wang, Liangzhu Leon (editor) / Ge, Hua (editor) / Zhai, Zhiqiang John (editor) / Qi, Dahai (editor) / Ouf, Mohamed (editor) / Sun, Chanjuan (editor) / Wang, Dengjia (editor) / Shu, Chang (author) / Wang, Liangzhu Leon (author)
International Conference on Building Energy and Environment ; 2022
Proceedings of the 5th International Conference on Building Energy and Environment ; Chapter: 161 ; 1567-1576
2023-09-05
10 pages
Article/Chapter (Book)
Electronic Resource
English
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