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Pore-scale modeling of immiscible two-phase flow in complex porous media

机译:复杂多孔介质中不相溶两相流的孔尺度模拟

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摘要

This paper presents currently available pore-scale predictive technique for immiscible two-phase flow in complex porous media, which is based on the real structure description for the pore space. The Navier-Stokes equations were discretized using a finite volume method, while the volume-of-fluid method was used to capture the location of interfaces. The pore fluids flow was numerically simulated and the influence of wettability was studied based on the-numerical predictions. For more complex porous media, the porous structure was reconstructed using the micro CT scan images. The second method was Shan-Chen type multiphase LBM model, which was developed to perform the two-phase flow simulation in a 3D reconstructed porous domain. The detailed characteristic of the flow in porous media was described, which can be further used to evaluate the average effect of the flow in macro scale. The effects of porous structure wettability, surface tension and pressure gradient were discussed based on the numerical predictions. (C) 2015 Elsevier Ltd. All rights reserved.
机译:本文提出了基于多孔空间真实结构描述的复杂多孔介质中不相溶两相流动的孔隙尺度预测技术。 Navier-Stokes方程使用有限体积方法离散化,而流体体积方法用于捕获界面位置。数值模拟了孔隙流体的流动,并研究了润湿性的影响。对于更复杂的多孔介质,可使用微CT扫描图像重建多孔结构。第二种方法是Shan-Chen型多相LBM模型,该模型用于在3D重建的多孔域中执行两相流模拟。描述了多孔介质中流动的详细特性,可以进一步用于评估宏观尺度上流动的平均效果。基于数值预测,讨论了多孔结构的润湿性,表面张力和压力梯度的影响。 (C)2015 Elsevier Ltd.保留所有权利。

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