Mathematical model of gas emission in coal particles and the numerical solution
Abstract：In order to study the law of gas desorption and emission, a desorption experiment of coal particles in differ- ent sizes under different initial pressures was designed. And the measured curves of gas desorption accumulated amount with the change of time were obtained. According to Darey law, the paper also built the mathematical model of gas emission which was disposed with finite difference method. The visual Basic language was used to solve and eaeulate the mathematical model. The variation regulation of gas pressure in the inter coal particle and the accumulative desorp- tion quantity at different pressure are finally obtained. Through comparing the simulation results and experiment re- suits, the conclusion shows that the gas emission from the coal particles corresponds to Darcy law.
Keywords：coal particlesgasdesorptionemissionmathematical modelnumerical solution
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1466-1471 )