煤矿火灾烟气流动传播过程仿真研究

煤矿发生火灾后会生成大量有毒气体并产生火风压,烟气在火灾动力的影响下出现状态紊乱,研究煤矿火灾烟气流动传播过程对控制火情有着重要意义。基于国内外研究现状,对燃烧及风流特点进行分析,建立了煤矿火灾烟气流动数学模型,并利用CFD软件进行仿真。研究表明:无通风工况下的烟气为对称流动;随着风速增加,出口处温度降低,烟气向风流入口处的流速减小。

Smoke Flow Propagation Simulation Research of Coal Mine Fires

After a fire ,coal mine will generate a large number of poisonous gas and produce fire wind pressure and under the influence of fire ,the flue gas occurs disorder state .Coal mine fire smoke flow propagation process research has important significance to fire control .Based on the research status at home and abroad ,the characteristic of combustion and romantic are analyzed ,the mathematical model of coal mine fire smoke flow is established and software CFD is applied to conduct simulation .Research shows that :under no ventilation conditions ,flue gas flow is symmetry and with the increase of the wind speed ,the exit temperature will be reduced and wind velocity at the entrance of flue gas also decreased .