火灾巷道烟流速度变化规律研究

Variation law of smoke flow speed in tunnel during fire period

以丁家梁煤矿采区进风系统为原型,按照流体相似原理,建立矿井巷道火灾模拟实验系统,根据能量守恒定律,进行火灾巷道烟流速度的实验测试、计算和分析,并利用GAMBIT软件对实验模型巷道进行网格划分,通过在FLUENT软件中设定火灾时期烟气流动的边界条件和初始条件,选用RNG k-ε两方程湍流模型、能量方程和SIMPLE算法对矿井巷道火灾烟流速度进行稳态数值模拟,得出火灾时期巷道烟流速度的变化规律。

Taking the air inlet system of mining area in Dingjialiang coal mine as prototype,the simulation and experiment system of mining tunnel fire is established based on the fluid similarity theory; according to the energy conservation law,the relevant experimental work of tunnel smoke flow speed during fire period is done,which includes test,calculation and analysis. The grid division of experimental model roadway is carried out with GAMBIT software. By setting the boundary and initial conditions of smoke flow during fire period in FLUENT software,using RNG k- ε two- equation turbulence model,energy equation and SIMPLE algorithm,the steady state numerical simulation of tunnel smoke flow speed in mine is done to obtain the variation law of tunnel smoke flow speed during fire period.