Dispersion in Fractures With Ramified Dissolution Patterns
The injection of a reactive fluid into an open fracture may modify the fracture surface locally and create a ramified structure around the injection point. This structure will have a significant impact on the dispersion of the injected fluid due to increased permeability, which will introduce large...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2018-04-01
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| Series: | Frontiers in Physics |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fphy.2018.00029/full |
| _version_ | 1811194416750133248 |
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| author | Le Xu Benjy Marks Benjy Marks Renaud Toussaint Renaud Toussaint Eirik G. Flekkøy Knut J. Måløy |
| author_facet | Le Xu Benjy Marks Benjy Marks Renaud Toussaint Renaud Toussaint Eirik G. Flekkøy Knut J. Måløy |
| author_sort | Le Xu |
| collection | DOAJ |
| description | The injection of a reactive fluid into an open fracture may modify the fracture surface locally and create a ramified structure around the injection point. This structure will have a significant impact on the dispersion of the injected fluid due to increased permeability, which will introduce large velocity fluctuations into the fluid. Here, we have injected a fluorescent tracer fluid into a transparent artificial fracture with such a ramified structure. The transparency of the model makes it possible to follow the detailed dispersion of the tracer concentration. The experiments have been compared to two dimensional (2D) computer simulations which include both convective motion and molecular diffusion. A comparison was also performed between the dispersion from an initially ramified dissolution structure and the dispersion from an initially circular region. A significant difference was seen both at small and large length scales. At large length scales, the persistence of the anisotropy of the concentration distribution far from the ramified structure is discussed with reference to some theoretical considerations and comparison with simulations. |
| first_indexed | 2024-04-12T00:25:41Z |
| format | Article |
| id | doaj.art-7e8bc0ad548841bebfb480b33ba476ce |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-12T00:25:41Z |
| publishDate | 2018-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-7e8bc0ad548841bebfb480b33ba476ce2022-12-22T03:55:31ZengFrontiers Media S.A.Frontiers in Physics2296-424X2018-04-01610.3389/fphy.2018.00029356235Dispersion in Fractures With Ramified Dissolution PatternsLe Xu0Benjy Marks1Benjy Marks2Renaud Toussaint3Renaud Toussaint4Eirik G. Flekkøy5Knut J. Måløy6PoreLab, Department of Physics, University of Oslo, Oslo, NorwayPoreLab, Department of Physics, University of Oslo, Oslo, NorwayThe University of Sydney, Sydney, NSW, AustraliaPoreLab, Department of Physics, University of Oslo, Oslo, NorwayCentre National de la Recherche Scientifique, Université de Strasbourg, IPGS UMR 7516, Strasbourg, FrancePoreLab, Department of Physics, University of Oslo, Oslo, NorwayPoreLab, Department of Physics, University of Oslo, Oslo, NorwayThe injection of a reactive fluid into an open fracture may modify the fracture surface locally and create a ramified structure around the injection point. This structure will have a significant impact on the dispersion of the injected fluid due to increased permeability, which will introduce large velocity fluctuations into the fluid. Here, we have injected a fluorescent tracer fluid into a transparent artificial fracture with such a ramified structure. The transparency of the model makes it possible to follow the detailed dispersion of the tracer concentration. The experiments have been compared to two dimensional (2D) computer simulations which include both convective motion and molecular diffusion. A comparison was also performed between the dispersion from an initially ramified dissolution structure and the dispersion from an initially circular region. A significant difference was seen both at small and large length scales. At large length scales, the persistence of the anisotropy of the concentration distribution far from the ramified structure is discussed with reference to some theoretical considerations and comparison with simulations.http://journal.frontiersin.org/article/10.3389/fphy.2018.00029/fulldispersionfractureconvection-diffusionfractal-likeHele-Shaw cellfluorescein tracer |
| spellingShingle | Le Xu Benjy Marks Benjy Marks Renaud Toussaint Renaud Toussaint Eirik G. Flekkøy Knut J. Måløy Dispersion in Fractures With Ramified Dissolution Patterns Frontiers in Physics dispersion fracture convection-diffusion fractal-like Hele-Shaw cell fluorescein tracer |
| title | Dispersion in Fractures With Ramified Dissolution Patterns |
| title_full | Dispersion in Fractures With Ramified Dissolution Patterns |
| title_fullStr | Dispersion in Fractures With Ramified Dissolution Patterns |
| title_full_unstemmed | Dispersion in Fractures With Ramified Dissolution Patterns |
| title_short | Dispersion in Fractures With Ramified Dissolution Patterns |
| title_sort | dispersion in fractures with ramified dissolution patterns |
| topic | dispersion fracture convection-diffusion fractal-like Hele-Shaw cell fluorescein tracer |
| url | http://journal.frontiersin.org/article/10.3389/fphy.2018.00029/full |
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