Lattice Boltzmann study of wettability alteration in the displacement of nanoparticle-filled binary fluids
Lattice Boltzmann study of wettability alteration in the displacement of nanoparticle-filled binary fluids
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DOI：
10.1016/j.compfluid.2015.03.027
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发表时间：
2016-01
影响因子：
2.8
通讯作者：
Kang Yang;Zhaoli Guo
中科院分区：
文献类型：
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作者：
Kang Yang;Zhaoli Guo
润湿性改变经常发生在可移动纳米粒子驱替二元流体的过程中，并且对驱替速度有显着影响。本文提出了一种将格子玻尔兹曼方法（LBM）与元胞自动机（CA）概率模型相结合的混合计算方法来模拟这种现象。粒子被约束在晶格节点上移动，因此本方法避免了粒子运动方面复杂的插值计算。研究了不同参数（例如颗粒润湿性、颗粒与流体相互作用强度和驱动力）对驱油效率的影响。数值结果表明，不同条件下润湿性变化差异较大，最终导致驱油效率存在显着差异。
Wettability alteration often occurs in the displacement of binary fluids with mobile nanoparticles, and has a significant influence on the displacement velocity. In this paper, a hybrid computational approach coupling the lattice Boltzmann method (LBM) with Cellular Automata (CA) probabilistic model proposed to simulate this phenomenon. The particles are constrained to move on the lattice nodes, and so the present method avoids the complicated interpolation calculation in terms of particles motion. Effects of different parameters, such as particles wettability, particle–fluid interaction strengths and driven forces on the displacement efficiency are investigated. Numerical results indicate that the wettability alteration under different conditions is quite different, which finally lead to a significant discrepancy in displacement efficiency.