可燃装修材料的燃烧温度场数值模拟分析

Numerical simulation and analysis of the burning temperature field for combustible decorative materials

为研究室内可燃装修材料的耐高温及燃烧特性,该文用火灾动力学模拟软件Fire DynamicSimulator(FDS)对火灾实际场景的温度场进行数值模拟分析。对热释放速率曲线进行拟合分析,发现火灾发展初期是由一个慢速增长火和一个超快速增长火两个阶段组成。比较温度场的模拟结果与实际场景的燃烧图痕,得出火场温度的快速升高源于可燃材料的热释放速率和燃料消耗速率快速增加。同时分析了火场中一氧化碳、二氧化碳等有害气体的浓度与燃烧温度场的变化规律,为选择合适的室内装饰材料提供有效的数值参考。

To research the bear high-temperature ＆ burning characteristic of the indoor flammable decorative materials, the Fire Dynamics Simulator （FDS） method was used for simulating the temperature-field of the fire circumstances. Comparing the temperature-field simulation results with the burning trails, the quick increase of the fire circumstance temperatures could be ascribed to the increase of the heat release rate and the fuel mass burning rate on the combustible materials. While the contents of the carbon monoxide and carbon dioxide with the change of the temperature field were also given. This provides the effective data for choosing appropriate decorative materials.