基于COMSOL气固耦合特征模拟研究

Simulation research on gas-solid coupling characteristics based on comsol

煤层气产业在现代能源工业体系中扮演着非常重要的角色,针对煤层气的开采值得深入的研究。煤层气在煤层中的运移受到诸多因素的影响,通过实验及数值模拟可以观测瓦斯运移的规律,从而提高生产效率。研究结果表明:①煤层气在运移过程中气体压力及煤层渗透率会发生变化;②煤层中的渗透率随着气体压力的升高而呈现出下降趋势;③整体上看,煤层气的开采速率呈现逐渐下降的趋势。

The CBM industry plays a very important role in the modern energy industry system,Research on CBM exploitation deserved further study.The transportation of CBM in the coal seam is influenced by many factors.The laws of gas migration can be observed through experiments and numerical simulations to improve the production efficiency.The results show that:①the gas pressure and coalbed permeability will change during the migration of CBM;②the permeability in the coal seam shows a downward trend with the increase of gas pressure;③Looking,the rate of exploitation of coalbed methane shows a gradual downward trend.