Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media
We study the nature of non-Fickian particle transport in 3-D porous media by simulating fluid flow in the intricate pore space of real rock. We solve the full Navier-Stokes equations at the same resolution as the 3-D micro-CT (computed tomography) image of the rock sample and simulate particle trans...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Geophysical Union (AGU)
2016
|
| Online Access: | http://hdl.handle.net/1721.1/101630 https://orcid.org/0000-0002-7370-2332 https://orcid.org/0000-0002-4961-6899 |
| _version_ | 1826194083503144960 |
|---|---|
| author | Kang, Peter K. de Anna, Pietro Nunes, Joao P. Bijeljic, Branko Blunt, Martin J. Juanes, Ruben |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Kang, Peter K. de Anna, Pietro Nunes, Joao P. Bijeljic, Branko Blunt, Martin J. Juanes, Ruben |
| author_sort | Kang, Peter K. |
| collection | MIT |
| description | We study the nature of non-Fickian particle transport in 3-D porous media by simulating fluid flow in the intricate pore space of real rock. We solve the full Navier-Stokes equations at the same resolution as the 3-D micro-CT (computed tomography) image of the rock sample and simulate particle transport along the streamlines of the velocity field. We find that transport at the pore scale is markedly anomalous: longitudinal spreading is superdiffusive, while transverse spreading is subdiffusive. We demonstrate that this anomalous behavior originates from the intermittent structure of the velocity field at the pore scale, which in turn emanates from the interplay between velocity heterogeneity and velocity correlation. Finally, we propose a continuous time random walk model that honors this intermittent structure at the pore scale and captures the anomalous 3-D transport behavior at the macroscale. |
| first_indexed | 2024-09-23T09:50:14Z |
| format | Article |
| id | mit-1721.1/101630 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:50:14Z |
| publishDate | 2016 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/1016302022-09-30T17:10:22Z Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media Kang, Peter K. de Anna, Pietro Nunes, Joao P. Bijeljic, Branko Blunt, Martin J. Juanes, Ruben Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Kang, Peter K. de Anna, Pietro Juanes, Ruben We study the nature of non-Fickian particle transport in 3-D porous media by simulating fluid flow in the intricate pore space of real rock. We solve the full Navier-Stokes equations at the same resolution as the 3-D micro-CT (computed tomography) image of the rock sample and simulate particle transport along the streamlines of the velocity field. We find that transport at the pore scale is markedly anomalous: longitudinal spreading is superdiffusive, while transverse spreading is subdiffusive. We demonstrate that this anomalous behavior originates from the intermittent structure of the velocity field at the pore scale, which in turn emanates from the interplay between velocity heterogeneity and velocity correlation. Finally, we propose a continuous time random walk model that honors this intermittent structure at the pore scale and captures the anomalous 3-D transport behavior at the macroscale. United States. Dept. of Energy (Early Award Grant DE-SC0003907) United States. Dept. of Energy. Mathematical Multifaceted Integrated Capability Center (Grant DE-SC0009286) 2016-03-08T01:57:05Z 2016-03-08T01:57:05Z 2014-09 2014-08 Article http://purl.org/eprint/type/JournalArticle 00948276 http://hdl.handle.net/1721.1/101630 Kang, Peter K., Pietro de Anna, Joao P. Nunes, Branko Bijeljic, Martin J. Blunt, and Ruben Juanes. “Pore-Scale Intermittent Velocity Structure Underpinning Anomalous Transport through 3-D Porous Media.” Geophysical Research Letters 41, no. 17 (September 15, 2014): 6184–6190. https://orcid.org/0000-0002-7370-2332 https://orcid.org/0000-0002-4961-6899 en_US http://dx.doi.org/10.1002/2014gl061475 Geophysical Research Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) MIT web domain |
| spellingShingle | Kang, Peter K. de Anna, Pietro Nunes, Joao P. Bijeljic, Branko Blunt, Martin J. Juanes, Ruben Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media |
| title | Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media |
| title_full | Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media |
| title_fullStr | Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media |
| title_full_unstemmed | Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media |
| title_short | Pore-scale intermittent velocity structure underpinning anomalous transport through 3-D porous media |
| title_sort | pore scale intermittent velocity structure underpinning anomalous transport through 3 d porous media |
| url | http://hdl.handle.net/1721.1/101630 https://orcid.org/0000-0002-7370-2332 https://orcid.org/0000-0002-4961-6899 |
| work_keys_str_mv | AT kangpeterk porescaleintermittentvelocitystructureunderpinninganomaloustransportthrough3dporousmedia AT deannapietro porescaleintermittentvelocitystructureunderpinninganomaloustransportthrough3dporousmedia AT nunesjoaop porescaleintermittentvelocitystructureunderpinninganomaloustransportthrough3dporousmedia AT bijeljicbranko porescaleintermittentvelocitystructureunderpinninganomaloustransportthrough3dporousmedia AT bluntmartinj porescaleintermittentvelocitystructureunderpinninganomaloustransportthrough3dporousmedia AT juanesruben porescaleintermittentvelocitystructureunderpinninganomaloustransportthrough3dporousmedia |