| 邢会林.原煤微生物产气过程的有限元模拟(英文)[J].计算力学学报,2016,33(4):637~642 |
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| 原煤微生物产气过程的有限元模拟(英文) |
| Finite element modelling of biogas process from coal |
| 投稿时间：2016-05-26 修订日期：2016-06-13 |
| DOI：10.7511/jslx201604033 |
| 中文关键词: 生物产气 原煤 生化反应-流动耦合 有限元 地学计算 |
| 英文关键词:Biogenic gas coal bioreaction-fluid flow coupling finite element geocomputing |
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| 中文摘要: |
| 简要介绍了我们近年来基于有限元法开展的地学计算研究新进展，重点在于原煤裂隙介质中微生物反应与流体流动耦合过程的数学模型及其在模拟微生物产气过程中的应用。原煤微生物产气过程包括以下四个主要阶段：水解，酸化，有机酸和醇类降解为乙酸，最后生成甲烷。该生化反应的主要成分是固态的煤和微生物，液态的降解煤、中间产物、醋酸和水，以及气态的CH4和CO2。基于质量守恒定律，导出了描述原煤微生物产气耦合过程的偏微分方程，在有限元软件PANDAS平台基础上求解，并应用于模拟和分析原煤中微生物产气过程。数值模拟结果表明了本文提出的算法的有效性。 |
| 英文摘要: |
| 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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