木材表面火蔓延特性的动态测量研究

通过模拟实验，对不同工况下木材表面的火蔓延特性进行了动态测量研究。首先应用火焰结构显示技术连续观察和记录了木材表面的火蔓延行为和火焰的热结构；其次，利用温度示踪技术对火蔓延过程进行了动态观测，进而获取了在不同条件下的火蔓延速度并分析讨论了木材表面火蔓延的机理。

Dynamic Test Study on Flame Spread Characteristics Over Wood Surface

The dynamic tests on flame spread characteristics over wood surface under different conditions were done through the simulation esperiments. Firstly,the flame spread behavior and it's thermal structure of wood surface was observed and recorded. Secondly, the flame spread process was inspected in real time based on the techniques of temperature tracing. Thirdly,we obtained the spread rate under different conditions and analyzed the mechanics of flame spread over the wood surface. The experiment results show that the flame spread over wood surface was mainly controlled by radiation and heat reduction under static conditions. However,the convection,heat and mass transfer were mainly impacted the flame spread under the current flow conditions.