摘要
搭建等比例小尺度(1∶10)公交车模型实验平台,实验研究在不同通风条件下其温度场、热释放速率等关键火灾参数的实验数据,对理论分析所用流动及传热等物理模型进行验证。采用数值模拟方法,考虑公交车不同开口的影响,分析不同通风条件下的全尺寸公交车内发生火灾时的热释放速率变化、温度场变化、CO体积分数变化,为公交车火灾预防和调查提供理论依据。建议在公交车顶部安装多个触发式自动天窗,将公交车内救生装置位置适当下调。
A reduced-scale （1∶ 10） bus fire experimental model was established and several parameters were analyzed including temperature,burning rate and smoke concentration under different ventilation conditions.Physical and mathematical models of smoke flow and heat conduction were verified based on these data.The change of heat release rate,temperature field and CO volume fraction in full size bus was analyzed under different ventilation conditions by numerical simulation to research the influence of entrance,and to provide the evidence of fire prevention and fire investigation of bus fire.Suggestions as setting several automatic trigger skylights on the top of bus and reducing the height of lifesaving device in the bus were put forward.
出处
《消防科学与技术》
CAS
北大核心
2017年第4期451-455,共5页
Fire Science and Technology
基金
上海市自然科学基金项目(15ZR1408100)
关键词
公交车火灾
通风条件
数值模拟
小尺度实验
热释放速率
温度场
bus fire
ventilation conditions
numerical simulations
reduced-scale experiments
heat release rate
temperature field
