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《Building Science》 2007-09
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Numerical Simulation for Fire Smoke Flow in a Tall Building with Multi-Story Hollow Space

ZHU Guo-qing,GU Zheng-hong,JI Jing-wei,CHENG Yuan-ping(School of Mining and Safety Engineering,China University of Mining and Technology,Xuzhou 221008,Jiangsu,China)  
Characteristics of smoke flow and fire spread in a multi-story hollow space were studied to investigate their influences on fire compartment and safety evacuation.Fire development model was established and fire scenarios were designed to simulate fire and smoke spread by CFD software numerically based on concepts of fire performance-based design for some tall building with double multi-story hollow space,whose heights are 74.65 m and 55.95 m respectively.Simulation results show that performance targets for safety evacuation for people in each floor is satisfied in all fire scenarios,if smoke is evacuated naturally using the multi-story hollow space.Hang walls mounted in corridors around the multi-story hollow space prevent smoke flowing out smoothly,shorten the coming time of risk and increase fire danger.Using chimney effect,it is preferred to adopt natural smoke evacuation method in a multi-story hollow space.
【Fund】: 国家自然科学基金项目(50406026)
【CateGory Index】: TU972.4
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