The impact of wettability and fluid saturations on multiphase representative elementary volume estimations of micro-porous media

Q1 Physics and Astronomy

Capillarity Pub Date : 2023-09-05 DOI:10.46690/capi.2023.10.01

Shaheryar T. Hussain, Klaus Regenauer-Lieb, Aleksandr Zhuravljov, Furqan Hussain, Sheik S. Rahman

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引用次数: 0

Abstract

The occurrence of multi-phase flows in porous media is a complex phenomenon that involves multiple scales, ranging from individual pores to larger continuum scales. Upscaling frameworks have emerged as a response to the need for addressing the disparity between micro-scale processes and macroscopic modelling. Determination of the representative elementary volume is important for understanding fluid dynamics in micro-porous materials. The size of the representative elementary volume for multiphase flow in porous media is significantly affected by wettability and fluid saturations. Previous studies have overlooked this aspect by conducting simulations under conditions of constant medium wettability and fluid saturations. This study uses finite volume simulations with a volume of fluid approach for two distinct asymptotic homogenization methods, namely hydrodynamic bounds of relative permeability and thermodynamic bounds of entropy production. Strong wetting conditions with high wetting phase saturation were found to require a smaller sample size to establish representative elementary volume, while mixed-wettability scenarios necessitate the largest sample sizes. These findings improve our understanding of multiphase fluid flow behaviour in micro-porous materials and aid in enhancing techniques for scaling up observations and predictive modelling in engineering and environmental fields. Document Type: Short communication Cited as: Hussain, S. T., Regenauer-Lieb, K., Zhuravljov, A., Hussain, F., Rahman, S. S. The impact of wettability and fluid saturations on multiphase representative elementary volume estimations of micro-porous media. Capillarity, 2023, 9(1): 1-8. https://doi.org/10.46690/capi.2023.10.01

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润湿性和流体饱和度对微孔介质多相代表性基本体积估算的影响

多孔介质中多相流的发生是一个复杂的现象，涉及多个尺度，从单个孔隙到更大的连续尺度。升级框架的出现是对解决微观尺度过程和宏观建模之间差异的需要的回应。确定具有代表性的基本体积对于理解微孔材料的流体动力学具有重要意义。多孔介质中多相流的代表性基本体积大小受润湿性和流体饱和度的显著影响。以往的研究通过在恒定介质润湿性和流体饱和度条件下进行模拟而忽略了这一点。本研究采用有限体积模拟和流体体积方法，对两种不同的渐近均匀化方法，即相对渗透率的流体动力边界和熵产的热力学边界进行了研究。高润湿相饱和度的强润湿条件需要较小的样本量来建立代表性的基本体积，而混合润湿情况需要最大的样本量。这些发现提高了我们对微孔材料中多相流体流动行为的理解，并有助于提高工程和环境领域中扩大观察和预测建模的技术。引用自:Hussain, S. T.， Regenauer-Lieb, K.， Zhuravljov, A.， Hussain, F.， Rahman, S. S.，微孔介质润湿性和流体饱和度对多相代表性基本体积估算的影响。毛细管学，2002,9(1):1-8。https://doi.org/10.46690/capi.2023.10.01

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来源期刊

Capillarity Physics and Astronomy-Surfaces and Interfaces

CiteScore

7.10

自引率

0.00%

发文量

审稿时长

2~3 weeks

期刊介绍： Capillarity publishes high-quality original research articles and current reviews on fundamental scientific principles and innovations of capillarity in physics, chemistry, biology, environmental science and related emerging fields. All advances in theoretical, numerical and experimental approaches to capillarity in capillary tube and interface dominated structure and system area are welcome. The following topics are within (but not limited to) the scope of capillarity: i) Capillary-driven phenomenon in natural/artificial tubes, porous and nanoporous materials ii) Fundamental mechanisms of capillarity aided by theory and experiments iii) Spontaneous imbibition, adsorption, wicking and related applications of capillarity in hydrocarbon production, chemical process and biological sciences iv) Static and dynamic interfacial processes, surfactants, wettability, film and colloids v) New approaches and technologies on capillarity Capillarity is a quarterly open access journal and free to read for all. The journal provides a communicate platform for researchers who are interested in all fields of capillary phenomenon.