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采用数值模拟的方法,利用FDS软件对起火装饰店建立数学模型,通过计算再现火灾过程。根据调查访问、现场勘验等获取的情况,重点分析阴燃起火情况下、不同时间段人员死亡地点的热释放速率、能见度、温度、一氧化碳的浓度变化情况。通过对燃烧现场取证和逃生人员的描述表明,计算结果很好地预测了阴燃火灾发生的可能性,并且较准确地预测了火灾发展和烟气的运动,为实际火灾调查提供了数值模拟的应用价值。
The method of numerical simulation was used to establish a mathematical model of fire decoration shop by using FDS software to reproduce the fire process through calculation. According to the survey visits, on-site surveys and other acquisitions, the focus is on analyzing the changes of heat release rate, visibility, temperature and carbon monoxide concentration at different locations during smoldering and igniting fires. The description of the forensic and evacuation personnel at the combustion site shows that the calculated results well predict the possibility of a smoldering fire and more accurately predict the fire development and the flue gas movement and provide a numerical simulation of the actual fire investigation Value.