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通过应用煤炭科学研究总院重庆研究院某水平巷道全尺寸木材火灾实验和流体力学软件FULENT的数值模拟方法,研究风速为0.7m/s和1.1m/s时8,00kg木材燃烧以及风速为0.7m/s时,400kg木材燃烧火源下风侧各热物理参数变化规律。结果表明:3次燃烧试验和模拟均为富氧燃烧类型,验证了A.罗伯特燃烧判定准则的正确性。同时试验和模拟火源下风侧CO,CH4和H2危害性气体浓度和出口风门处温度,对比结果证明,巷道富氧类燃烧难以产生次生灾害。研究也表明,环境因素或巷道物理结构变化能改变巷道火灾燃烧类型。
Through the numerical simulation of full scale wood fire experiment and FULENT software of a horizontal tunnel in Chongqing Institute of Coal Research Institute of China, the effects of 8,00kg wood burning and wind speed of 0.7kg at wind speed of 0.7m / s and 1.1m / s m / s, the change rule of each thermophysical parameter on the leeward side of 400 kg wood combustion fire source. The results show that the three combustion tests and simulations are all oxy-fuel combustion types, and the correctness of A. Robert combustion criterion is verified. At the same time, the concentrations of harmful gases such as CO, CH4 and H2 and temperature at the exit damper were tested and simulated on the windward side of the fire source. Comparing the results, it is proved that it is hard to produce secondary disasters in the combustion of oxygen-rich roadway. The study also shows that the environmental factors or changes in the physical structure of roadway can change the type of roadway fire.