摘要
由于煤层甲烷在煤岩体中的运移过程及其复杂,因此用来描述其运移的数学模型常常是高阶非线性的偏微分方程,为了能更好地解决此类问题,采用多重物理量数值模拟软件COMSOL Multiphysic对所建的拟稳态运移模型进行了模拟求解的研究。结果表明用该软件模拟的压力和浓度动态曲线更符合实际情况,而且可以用动态可视化模块来模拟压降过程。
Considering the influence of the grads of gas volume fracton in the non-steady mobile model of the coalbed methane, the solution will be complex and computation will be heavy. However, it is still difficult to be adopted. To solve the problem, the article adopts the Femlab commercial numerical simulating software to solve the setup non-steady model by simulating. The results show that there remains a good fitting relationship between the gas production rate simulated by the software and the practical data. At the same time, pressure and density are simulated, too. The analyses show that the distribution curve can predict the mobilization and distribution regularity in the coalbed methane well. So the software has pretty good use and scientific research value in the coalbed methane simulation.
出处
《武汉工业学院学报》
CAS
2007年第3期60-62,共3页
Journal of Wuhan Polytechnic University
