中文摘要：

为了研究煤田露头火区燃烧特性的影响因素,根据相关资料建立了煤田露头火区物理模型和数学模型,并合理设定了模型的初始条件和边界条件,采用Fluent软件分别对入风口进风通道方向上不同风速、不同孔隙率的漏风流场、温度场和压力场进行了数值模拟与分析。模拟结果表明,随着入风口进风通道方向上风速和孔隙率的增大,火区的供氧速率也随之增大,火区持续燃烧的速率也增大;煤田露头火区的燃烧特性是受漏风流场、温度场和压力场相互作用影响的。

英文摘要：

In order to study on the iniluence lactors ol combustion cnaracterlsncs m the lixe zone of coalfield outcrop, according to relevant data, the physical model and mathematical model of coalfield outcrop fire zone were established, and the initial conditions and boundary conditions of the model were reasonably setted, and then the air leakage flow field, temperature field and air pressure field with different air speed and porosity in the intake passage of air inlet were respectively simulated and analyzed. Simulated results show that the rate of oxygen supply and sustained combustion increases with the increase of air speed and porosity in the intake passage of air inlet, and the combustion characteristics in the fire zone of coalfield outcrop are affected by the interaction of the air leakage flow field, temperature field and air pressure field.