东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (8): 1211-1215.DOI: 10.12068/j.issn.1005-3026.2014.08.033

• 资源与土木工程 • 上一篇    

各向异性对CO2-水两相流体运移的影响——TOUGH2模拟器功能提升

杨艳林，卜繁婷，王福刚，许天福   

  1. (吉林大学 地下水资源与环境教育部重点实验室， 吉林 长春130021)
  • 收稿日期:2013-08-13 修回日期:2013-08-13 出版日期:2014-08-15 发布日期:2014-04-11
  • 通讯作者: 杨艳林
  • 作者简介:杨艳林(1984-)，男，湖北武汉人，吉林大学博士研究生；许天福(1962-)，男，辽宁丹东人，吉林大学特聘教授.
  • 基金资助:
    国家全球气候变化项目(12120113006300).

Effect of Anisotropy on CO2Water Two Phase Fluid Migration—Function Improvement of the TOUGH2 Simulator

YANG Yanlin， BU Fanting， WANG Fugang， XU Tianfu   

  1. Key Laboratory of Groundwater Resources and Environment
  • Received:2013-08-13 Revised:2013-08-13 Online:2014-08-15 Published:2014-04-11
  • Contact: WANG Fugang
  • About author:-
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摘要： 针对目前TOUGH2难以处理非均质各向异性地质体渗流的特点，提出采用张量形式的渗透率，耦合各向异性的处理算法，并在TOUGH2输入文件中增加了岩体的渗透主方向和单元的连接方向等参数的输入，有效解决了主渗透率方向与坐标轴不一致，以及多区域各向异性的问题.模拟研究了各向异性介质对CO2气体饱和度空间分布的影响，发现CO2在渗透率主值方向上的运移距离远，传播速度明显快，由此验证了算法的有效性.该项研究有效地提升了TOUGH2的性能，使得TOUGH2在处理复杂地质体渗流问题时，模拟结果更加客观，符合实际.

关键词: TOUGH2, 流体运移, 各向异性, 数值模拟, 渗透率

Abstract: It’s difficult to deal with the heterogeneous anisotropic geological conditions in TOUGH2 simulator， therefore，a new algorithm， using anisotropic permeability tensor， was coupled in TOUGH2 simulator. And the direction of rock’s hydraulic conductivity and elements connection parameters for anisotropic medium was added in the TOUGH2’s input file， which can solve the problems of the anisotropic permeability in different regions and the disparity between the main direction of permeability and the axis direction. Through the simulation of the anisotropic media’s influence on the spatial distribution of CO2 gas saturation， it can be found that CO2 migrates faster and further in the principal direction than the other directions， thereby the effectiveness of the algorithm is proved. The study effectively enhances the function of the TOUGH2’s simulator， which can deal with the seepage problems of complex geological conditions and make the simulation result more objective and practical.

Key words: TOUGH2, fluid migration, anisotropy, numerical simulation, permeability

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