多孔介质中非等温互溶流体驱替过程的格子Boltzmann研究

doi:10.19596/j.cnki.1001-246x.7963

计算物理 ›› 2019, Vol. 36 ›› Issue (6): 648-658.DOI: 10.19596/j.cnki.1001-246x.7963

多孔介质中非等温互溶流体驱替过程的格子Boltzmann研究

居隆, 张春华, 陈松泽, 郭照立

华中科技大学煤燃烧国家重点实验室, 湖北武汉 430074

收稿日期:2018-09-12 修回日期:2019-01-26 出版日期:2019-11-25 发布日期:2019-11-25
通讯作者: 郭照立,男,教授,E-mail:zlguo@hust.edu.cn
作者简介:居隆(1993-),男,硕士,研究方向为基于格子Boltzmann方法的非等温多孔介质反应流,E-mail:aiad520@hust.edu.cn

Lattice Boltzmann Study on Displacement Process of Thermal Miscible Fluids in Porous Media

JU Long, ZHANG Chunhua, CHEN Songze, GUO Zhaoli

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China

Received:2018-09-12 Revised:2019-01-26 Online:2019-11-25 Published:2019-11-25

摘要/Abstract

摘要： 利用格子Boltzmann方法，在孔隙尺度上对多孔介质内非等温混溶驱替过程进行数值研究，定量分析温度粘性膨胀系数（β_T）以及路易斯数（Le）对界面不稳定性和驱替效率的影响.结果表明：随着β_T的增大，界面不稳定性增强，驱替效率降低.当β_T>0时，随着Le的增大，界面不稳定性减弱，驱替流体与被驱替流体之间的界面趋于平缓，指尖残余率减小，驱替效率增大.当β_T<0时，Le对于驱替效率的影响相反.

关键词: 格子Boltzmann方法, 非等温, 流体驱替, 孔隙尺度, 驱替效率

Abstract: With lattice Boltzmann method, thermal miscible displacement process in porous media was investigated numerically in pore scale. Influence of thermal viscous diffusion coefficient (β_T) and Lewis number (Le) on interface shape and sweep efficiency are quantitatively analyzed. It shows that with the increase of β_T, the instability of interface increases and the sweep efficiency decreases. As β_T>0, with increase of Le, interface instability decreases; Interface between displacement fluid and displaced fluid tends to be flat; Fingertip residual rate decreases and sweep efficiency increases. As β_T<0, effects of Le on sweep efficiency are opposite.

Key words: lattice Boltzmann method, non-isothermal, fluid displacement, pore scale, sweep efficiency

中图分类号:

O357

居隆, 张春华, 陈松泽, 郭照立. 多孔介质中非等温互溶流体驱替过程的格子Boltzmann研究[J]. 计算物理, 2019, 36(6): 648-658.

JU Long, ZHANG Chunhua, CHEN Songze, GUO Zhaoli. Lattice Boltzmann Study on Displacement Process of Thermal Miscible Fluids in Porous Media[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2019, 36(6): 648-658.

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多孔介质中非等温互溶流体驱替过程的格子Boltzmann研究

Lattice Boltzmann Study on Displacement Process of Thermal Miscible Fluids in Porous Media

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