木质类人造板材炭化痕迹实验及数值重构研究

Experiment and numerical reconstruction of carbonization trace of man-made wood board

利用锥形量热仪测定不同辐射热通量和不同燃烧时间下木质类人造板材的炭化深度,建立木质类人造板材炭化痕迹的数学模型,并嵌入到FDS(Fire Dynamics Simulator)源程序中,与自身功能相结合,实现重构木质类人造板材炭化痕迹的功能。同时实验研究了不同油盘尺寸、不同燃烧时间、不同火源位置和不同材料种类对炭化痕迹的影响,并利用新编译的FDS程序对实验进行重构,对比重构结果和实验结果,证明该程序可以用于重现木质类人造板材的炭化痕迹。

Carbonization depth of man-made wood board is determined under different radiation heat fluxes and different burning time using the cone calorimeter. A mathematical model of man-made wood board carbonization trace is established, and is embedded into FDS （Fire Dynamics Simulator） source prograrrL By this means, the man-made wood board carbonization can he reconstructed. The influence of pool size, burning time, fire source position and wood species on the carbonization trace is also studied. By comparing the results of experiment and reconstruction, the newly compiled FDS is justified to be able to reconstruct the carbonization depth of man-made wood board.