The Role of Local Instabilities in Fluid Invasion into Permeable Media
Abstract Wettability is an important factor which controls the displacement of immiscible fluids in permeable media, with far reaching implications for storage of CO2 in deep saline aquifers, fuel cells, oil recovery, and for the remediation of oil contaminated soils. Considering the paradigmatic ca...
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2017
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oai:doaj.org-article:c9a90de3441742c9aadb4d5e9215e3d62021-12-02T11:40:43ZThe Role of Local Instabilities in Fluid Invasion into Permeable Media10.1038/s41598-017-00191-y2045-2322https://doaj.org/article/c9a90de3441742c9aadb4d5e9215e3d62017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00191-yhttps://doaj.org/toc/2045-2322Abstract Wettability is an important factor which controls the displacement of immiscible fluids in permeable media, with far reaching implications for storage of CO2 in deep saline aquifers, fuel cells, oil recovery, and for the remediation of oil contaminated soils. Considering the paradigmatic case of random piles of spherical beads, fluid front morphologies emerging during slow immiscible displacement are investigated in real time by X-ray micro–tomography and quantitatively compared with model predictions. Controlled by the wettability of the bead matrix two distinct displacement patterns are found. A compact front morphology emerges if the invading fluid wets the beads while a fingered morphology is found for non–wetting invading fluids, causing the residual amount of defending fluid to differ by one order of magnitude. The corresponding crossover between these two regimes in terms of the advancing contact angle is governed by an interplay of wettability and pore geometry and can be predicted on the basis of a purely quasi–static consideration of local instabilities that control the progression of the invading interface.Kamaljit SinghHagen SchollMartin BrinkmannMarco Di MichielMario ScheelStephan HerminghausRalf SeemannNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017) |
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Medicine R Science Q Kamaljit Singh Hagen Scholl Martin Brinkmann Marco Di Michiel Mario Scheel Stephan Herminghaus Ralf Seemann The Role of Local Instabilities in Fluid Invasion into Permeable Media |
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Abstract Wettability is an important factor which controls the displacement of immiscible fluids in permeable media, with far reaching implications for storage of CO2 in deep saline aquifers, fuel cells, oil recovery, and for the remediation of oil contaminated soils. Considering the paradigmatic case of random piles of spherical beads, fluid front morphologies emerging during slow immiscible displacement are investigated in real time by X-ray micro–tomography and quantitatively compared with model predictions. Controlled by the wettability of the bead matrix two distinct displacement patterns are found. A compact front morphology emerges if the invading fluid wets the beads while a fingered morphology is found for non–wetting invading fluids, causing the residual amount of defending fluid to differ by one order of magnitude. The corresponding crossover between these two regimes in terms of the advancing contact angle is governed by an interplay of wettability and pore geometry and can be predicted on the basis of a purely quasi–static consideration of local instabilities that control the progression of the invading interface. |
format |
article |
author |
Kamaljit Singh Hagen Scholl Martin Brinkmann Marco Di Michiel Mario Scheel Stephan Herminghaus Ralf Seemann |
author_facet |
Kamaljit Singh Hagen Scholl Martin Brinkmann Marco Di Michiel Mario Scheel Stephan Herminghaus Ralf Seemann |
author_sort |
Kamaljit Singh |
title |
The Role of Local Instabilities in Fluid Invasion into Permeable Media |
title_short |
The Role of Local Instabilities in Fluid Invasion into Permeable Media |
title_full |
The Role of Local Instabilities in Fluid Invasion into Permeable Media |
title_fullStr |
The Role of Local Instabilities in Fluid Invasion into Permeable Media |
title_full_unstemmed |
The Role of Local Instabilities in Fluid Invasion into Permeable Media |
title_sort |
role of local instabilities in fluid invasion into permeable media |
publisher |
Nature Portfolio |
publishDate |
2017 |
url |
https://doaj.org/article/c9a90de3441742c9aadb4d5e9215e3d6 |
work_keys_str_mv |
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