论文部分内容阅读
运用Fluent软件,在考虑煤层瓦斯吸附作用基础上,建立瓦斯渗流模型,并对比不同吸附能力煤样中瓦斯渗流情况,得出结论:(1)煤层瓦斯渗流在多孔介质孔隙粘性阻力影响下,轴向速度在径向各处呈均一分布趋势;(2)在煤的吸附作用下,瓦斯流速随轴向距离增加逐渐降低;(3)吸附能力越强的煤样,瓦斯所受吸附影响越大,吸附过程对煤样瓦斯运移的影响不可忽略。
By using Fluent software, gas seepage model was established based on gas adsorption in coal seam. The gas seepage in coal samples with different adsorption capacities was compared. The conclusions were as follows: (1) Under the influence of porous viscous resistance of porous media, (2) Under the action of coal adsorption, the gas velocity decreases with the increase of axial distance; (3) The stronger the adsorption capacity of coal samples, the greater the effect of gas adsorption , The influence of adsorption process on coal gas migration can not be neglected.