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| Finite element modelling of biogas process from coal |
| Received:May 26, 2016 Revised:June 13, 2016 |
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| DOI：10.7511/jslx201604033 |
| KeyWord:Biogenic gas coal bioreaction-fluid flow coupling finite element geocomputing |
| Author | Institution |
| 邢会林 |
昆士兰大学 地球科学计算中心, 澳大利亚布里斯班 4072 |
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| Abstract: |
| This paper briefly introduced our recent progresses in finite element based geocomputing and then focused on numerical simulation of coupled bioreaction-fluid flow dynamic behaviours during biogenic gas process from coal.The coal bioreactions for methane are described and modelled in the following four main steps: hydrolysis,acidogenesis,acetogenesis and methanogenesis-the formation of methane.The principal constituents are identified in the above reactions: the coal and microorganisms at solid state,the degradable coal,intermediate product,acetate and water (H2O) at liquid state,CH4 and CO2 at gas state,and the governing equations to describe such coupled bioreaction-fluid flow dynamics are derived based on the mass conservation law.This is solved by finite element method on our PANDAS,and further applied in simulating and analysing the coupled biogenic gas process from coal,which demonstrate the usefulness of proposed algorithm in this paper. |
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