摘要
针对某立体停车楼案例展开火灾及烟气蔓延的CFD数值分析。计算确定点火车辆引燃相邻两侧车辆、上层车辆、相对停车单元车辆的临界热释放速率,叠加计算汽车库火灾热释放速率。设置3个火灾场景模拟不同火源功率下火场温度、烟气蔓延情况以及着火车辆对相邻汽车、上下单元、相对单元汽车的热辐射影响。结果表明:上下相邻停车单元采取防火分隔措施能有效控制火势的发展;相对停车单元之间的距离应该满足防火间距的要求。
A parking building was analyzed by CFD numerical analyze on the spread of fire smoke. The critical heat release rate to ignite the ears beside, beyond and opposite to the burn- ing car was calculated and the heal release rate of fire in the parking building was calculated. There were 3 scenarios with different power in the simulation to find out the distribution of temperature and smoke, and also the effects of heat radiation on the cars beside, beyond, beIow and opposite to the burning ear. The results showed that： fire protection measures to the upper and lower units can control the fire effectively; the fire distance between the opposite unites must fit the requirement of fire pro- teetion.
出处
《消防科学与技术》
CAS
北大核心
2013年第11期1226-1228,共3页
Fire Science and Technology
关键词
立体停车楼
数值模拟
火灾蔓延
热辐射
parking building
numerical simulation
fire spread thermal radiation
