Publication Details

Taheri, A., Sereshki, F., Doulati Ardejani, F. & Mirza, A. (2016). Numerical modeling of gas flow in coal pores for methane drainage. Journal of Sustainable Mining, 15 (3), 95-99.


The sudden explosion of methane during underground coal mining is a major dilemma. To mitigate its occurrence and reduce the extent of methane diffusion, gas drainage operations are carried out before mining. This paper investigates methane gas flow in a coal block in order to calculate the pressure of gas and its molecule velocity for methane gas drainage operation. A coal piece surrounded by cleats was used for geometrical modeling and numerical simulation. Movements of fluid and gas molecules in a porous medium were successfully simulated. The numerical solution is based on COMSOL Multiphysics software. The validity of the numerical simulation was assessed using an analytical model with satisfactory results.



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