Solid-Gas Coupling Model and Numerical Simulation of Coal Containing Gas Based on Comsol Multiphysic
| Autor: | Jun Wei Yao, Sheng Zhou Li, Chang Bao Jiang, Ming Hui Li |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Solid gas
Materials science Computer simulation Finite element software Klinkenberg correction business.industry General Engineering Mechanics Finite element method Physics::Geophysics Permeability (earth sciences) Geotechnical engineering Coal Porosity business Physics::Atmospheric and Oceanic Physics |
| Zdroj: | Advanced Materials Research. :515-520 |
| ISSN: | 1662-8985 |
| DOI: | 10.4028/www.scientific.net/amr.616-618.515 |
| Popis: | Solid-gas coupling effect of coal containing gas is studied in order to understand the gas percolation mechanism in coal and rock. On the premise of that porosity and permeability of coal and rock are in dynamic changes and Klinkenberg effect, then seepage mechanics and elastic-plastic mechanics are considered together to established solid-gas coupling model of coal containing gas. With the given fixed solution conditions and parameters, the simulation results of mathematical model is found by the Comsol Multiphysic finite element software. Simulation results are consistent with the stress-strain law, deformation and failure modes of specimen in the experiment. Seepage law obtained in numerical simulation has same trends with experimental data. The elastoplastic solid-gas coupling model of coal containing gas can effectively describe the mechanical percolation characteristics of coal containing gas. |
| Databáze: | OpenAIRE |
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