Convective Plume Spreading in Model Transparent Porous Media

IF 2.7 3区工程技术 Q3 ENGINEERING, CHEMICAL

Transport in Porous Media Pub Date : 2024-05-14 DOI:10.1007/s11242-024-02090-z

H. Imuetinyan, P. Fruton, C. Giraudet, F. Croccolo

引用次数: 0

Abstract

Visualising fluid flow in porous media using optical techniques is challenging due to the inability to see through the medium. Here, we present an experimental methodology based on shadowgraphy to investigate the dynamic spreading of convective plumes in saturated transparent porous media made of glass beads. The saturated porous medium can be tuned transparent by matching the refractive index of the solid glass beads to that of the saturating fluid mixture. The proposed technique allows to investigate the essential elements of convective mixing within a porous medium using miscible fluids. We also describe a method to determine the velocity of convective plumes as they propagate. Our experimental results show that the density difference achieved during convection significantly affects the convective front velocity of the plumes. This is significant because it allows to quantitatively predict the intensity of convective mixing in porous media from the speed of the convective front.

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透明多孔介质模型中的对流烟羽扩散

由于无法看透多孔介质，因此使用光学技术观察多孔介质中的流体流动具有挑战性。在此，我们介绍一种基于阴影成像的实验方法，用于研究玻璃珠制成的饱和透明多孔介质中对流羽流的动态扩散。通过使固体玻璃珠的折射率与饱和流体混合物的折射率相匹配，可以调整饱和多孔介质的透明度。利用所提出的技术，可以研究混溶流体在多孔介质中对流混合的基本要素。我们还介绍了一种测定对流羽流传播速度的方法。我们的实验结果表明，对流过程中产生的密度差会显著影响羽流的对流前沿速度。这一点非常重要，因为它可以根据对流前沿的速度定量预测多孔介质中对流混合的强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transport in Porous Media 工程技术-工程：化工

CiteScore

5.30

自引率

7.40%

发文量

155

审稿时长

4.2 months

期刊介绍： -Publishes original research on physical, chemical, and biological aspects of transport in porous media- Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)- Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications- Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes- Expanded in 2007 from 12 to 15 issues per year. Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).