Computation of the interfacial area for two-fluid porous medium systems
Computation of the interfacial area for two-fluid porous medium systems
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DOI：
10.1016/s0169-7722(01)00202-9
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发表时间：
2002-05-01
影响因子：
3.6
通讯作者：
Miller, CT
中科院分区：
文献类型：
--
作者：
Dalla, E;Hilpert, M;Miller, CT
我们开发了一种根据多相系统的三维数字表示来计算界面面积的方法。我们用标准行进立方体算法根据离散相分布生成的等值面来近似界面。我们将这种方法应用于双流体孔隙尺度模拟，通过（1）模拟遵循实验多孔介质系统的粒度分布和孔隙率的球体随机堆积，以及（2）使用先前开发的基于孔隙形态的模型来预测经历一次排水的水湿多孔介质的相分布。预测的一次排水曲线和界面面积与文献中报道的实验值非常一致，其中界面面积是使用界面示踪剂测量的。海恩斯跳跃过程中的能量耗散是显着的：因此，系统上所做的机械功没有完全转化为表面能，并且不能从主要排水曲线中推断出界面面积。 (C) 2002 Elsevier Science B.V 保留所有权利。
We develop a method to compute interfacial areas from three-dimensional digital representations of multiphase systems. We approximate the interfaces with the isosurface generated by the standard marching-cube algorithm from the discrete phase distribution. We apply this approach to two-fluid pore-scale simulations by (1) simulating a random packing of spheres that obeys the grain-size distribution and porosity of an experimental porous medium system, and (2) using a previously developed pore-morphology-based model in order to predict the phase distribution for a water-wet porous medium that undergoes primary drainage. The predicted primary drainage curve and interfacial areas are in good agreement with the experimental values reported in the literature, where interfacial areas were measured using inter-facial tracers. The energy dissipation during Haines jumps is significant: thus, the mechanical work done on the system is not completely converted into surface energy, and interfacial areas may not be deduced from the primary drainage curve. (C) 2002 Elsevier Science B.V All rights reserved.