1. Mathematical model of gas emission in coal particles and the numerical solution.
- Author
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QIN Yue-ping, WANG Cui-xia, WANG Jian, and YANG Xiao-bin
- Subjects
- *
GAS research , *EMISSIONS (Air pollution) , *MATHEMATICAL models , *DARCY'S law , *SIMULATION methods & models , *DESORPTION , *COAL research - Abstract
In order to study the law of gas desorption and emission, a desorption experiment of coal particles in different 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 Darcy 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 calculate the mathematical model. The variation regulation of gas pressure in the inter coal particle and the accumulative desorption quantity at different pressure are finally obtained. Through comparing the simulation results and experiment results, the conclusion shows that the gas emission from the coal particles corresponds to Darcy law. [ABSTRACT FROM AUTHOR]
- Published
- 2012