不同通风条件下公交车火灾发展特性

发布时间：2018-01-28 13:34

本文关键词： 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　出处：《消防科学与技术》2017年04期 　论文类型：期刊论文

【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。
[Abstract]:The experimental data of key fire parameters such as temperature field, heat release rate and other key fire parameters under different ventilation conditions were studied by setting up an equal scale 1: 10) bus model experimental platform. The physical models of flow and heat transfer used in the theoretical analysis are verified. The effect of different openings on the bus is considered by numerical simulation method. The changes of heat release rate and CO volume fraction in full-scale buses under different ventilation conditions were analyzed. It is suggested that several trigger automatic skylights should be installed on the top of the bus, and the position of the lifesaving device in the bus should be adjusted down appropriately.
【作者单位】：上海倍安实业有限公司;中国科学技术大学火灾科学国家重点实验室;公安部上海消防研究所;
【基金】：上海市自然科学基金项目(15ZR1408100)
【分类号】：U492.83
【正文快照】： 城市公交车空间相对狭小,人员密度较大,内部热塑性材料大量使用,一旦发生火灾,往往会迅速蔓延到整个车厢,疏散困难。近年来,连续发生多起公交车火灾,造成重大人员财产损失以及恶劣的社会影响。研究公交车火灾发展规律及烟气蔓延特性,有助于为公交车火灾防治及人员疏散理论等提

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