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基于结构塌落的建筑火灾数值模拟方法 预览

Numerical simulation method for building fire based on structural collapse phenomenon
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摘要 将流固耦合理论应用于建筑结构塌落的火灾数值计算中,建立基于结构塌落的火灾燃烧动力学模型,并将该模型嵌入火灾动力学系统FDS中,实现塌落物对火势影响的数值模拟。与原FDS进行数值模拟比对,验证该方法的可行性。将该方法应用于某居民建筑火灾案例中,进行基于结构塌落的建筑火灾数值模拟,结果表明塌落结构引起室内火灾发生轰燃现象,对室内温度、烟气浓度、CO2浓度变化产生重大影响。 The fluid- solid coupling theory is applied to the numerical calculation of fire in building structure collapse. The fire combustion dynamics model based on structural collapse is established. The model is embedded in the fire dynamics system FDS to realize the impact of the collapse on the fire. The numerical simulation is compared with the original FDS, and the feasibility of the method is verified. The method was applied to a residential building fire case, and the numerical simulation of building fire based on structural collapse was carried out. The results showed that the collapsed structure caused a flashover of indoor fire and had a significant impact on indoor temperature, smoke concentration and CO2 concentration change.
作者 史超 龚郅治 李建伟 杨培中 SHI Chao;GONG Zhi-zhi;LI Jian-wei;YANG Pei-zhong(School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Shanghai Key Laboratory of Advanced Manufacturing Environment, Shanghai Jiao Tong University, Shanghai 200240, China;State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University, Shanghai 200240, China)
出处 《消防科学与技术》 CAS 北大核心 2019年第4期455-458,共4页 Fire Science and Technology
基金 国家自然科学基金资助项目(11672184).
关键词 结构塌落 建筑火灾 流固耦合 数值模拟 structural collapse building fire fluid- solid coupling numerical simulation
作者简介 史超(1991-),男,山西太原人,上海交通大学机械与动力工程学院硕士研究生,主要从事建筑火灾的数值模拟研究,上海市闵行区东川路800号上海交通大学机械与动力工程学院B楼225,200240.
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