数值模拟技术在某爆燃事故致因分析中的应用

Application of numerical simulation technology in cause analysis of a deflagration accident

调查和分析火灾爆燃事故致因因素,明确事故发生原因,对做好事前预防、减少人员伤亡和财产损失等均具有重要作用和意义。通过计算机数值模拟技术,对一起火灾爆燃事故中的两个可能起火点火势蔓延情况进行再现,研究分析其燃烧速率、热释放速率、温度分布、速度矢量等参数和火势发展的动态模拟图像,并结合现场勘查、调查走访情况,进行相互对比认证,确定准确的起火点,最终找到导致爆燃事故发生的真正原因。

It is important to clarify and identify the causing factors and exact the cause of deflagration accident, that will play a key role in preventing the fire, reducing the loss of life and possession, etc. The fire spread situation of two possible ignition points in a fire deflagration accident was reproduced based on numerical simulation. Then the dynamic simulation images of fire development, the burning rate, heat releasing rate, temperature distribution, the velocity vector and was compared other parameters were analyzed. Combining with the scene survey and the visit in- vestigation, the actual situation was compared with the computer simulation, so as to determine the precise fire igni- tion points, and find the real reason of the deflagration accident at last.