Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods
The effect of particle shape and heterogeneity on hydraulic anisotropy of unconsolidated granular packs is hereby investigated. Direct simulation was carried out on synthetically generated spherical, aspherical, ellipsoidal (aspect ratio of 2 and 3) and lenticular samples. Single phase Stokes equati...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MULTIPHYSICS
2016-09-01
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| Series: | International Journal of Multiphysics |
| Online Access: | http://journal.multiphysics.org/index.php/IJM/article/view/231 |
| _version_ | 1797707828301922304 |
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| author | L Akanji G Nasr S Matthai |
| author_facet | L Akanji G Nasr S Matthai |
| author_sort | L Akanji |
| collection | DOAJ |
| description | The effect of particle shape and heterogeneity on hydraulic anisotropy of unconsolidated granular packs is hereby investigated. Direct simulation was carried out on synthetically generated spherical, aspherical, ellipsoidal (aspect ratio of 2 and 3) and lenticular samples. Single phase Stokes equation was solved on models discretised on finite element geometries and hydraulic permeability computed in the horizontal and vertical directions to estimate the degree of anisotropy.
The spherical and aspherical packs with varying degrees of particle shapes and heterogeneities are virtually isotropic. Ellipses with aspect ratios 2 and 3 have higher anisotropy ratios compared to the spherical and aspherical geometries while the lenticular geometry is the most anisotropic. This is attributable to the preferential alignment of the grains in the horizontal flow direction during random dynamic settling under gravity. |
| first_indexed | 2024-03-12T06:13:16Z |
| format | Article |
| id | doaj.art-f50b1cd88b6a429f8555e06f86f4cd46 |
| institution | Directory Open Access Journal |
| issn | 1750-9548 2048-3961 |
| language | English |
| last_indexed | 2024-03-12T06:13:16Z |
| publishDate | 2016-09-01 |
| publisher | MULTIPHYSICS |
| record_format | Article |
| series | International Journal of Multiphysics |
| spelling | doaj.art-f50b1cd88b6a429f8555e06f86f4cd462023-09-03T02:51:36ZengMULTIPHYSICSInternational Journal of Multiphysics1750-95482048-39612016-09-017210.1260/1750-9548.7.2.153243Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methodsL Akanji0G Nasr1S Matthai2Petroleum Technology Research Group (PTRG), Petroleum and Gas Engineering Division, School of Computing, Science and Engineering (CSE), University of Salford, Manchester M5 4WT, United KingdomPetroleum Technology Research Group (PTRG), Petroleum and Gas Engineering Division, School of Computing, Science and Engineering (CSE), University of Salford, Manchester M5 4WT, United KingdomMontan University of Leoben, AustriaThe effect of particle shape and heterogeneity on hydraulic anisotropy of unconsolidated granular packs is hereby investigated. Direct simulation was carried out on synthetically generated spherical, aspherical, ellipsoidal (aspect ratio of 2 and 3) and lenticular samples. Single phase Stokes equation was solved on models discretised on finite element geometries and hydraulic permeability computed in the horizontal and vertical directions to estimate the degree of anisotropy. The spherical and aspherical packs with varying degrees of particle shapes and heterogeneities are virtually isotropic. Ellipses with aspect ratios 2 and 3 have higher anisotropy ratios compared to the spherical and aspherical geometries while the lenticular geometry is the most anisotropic. This is attributable to the preferential alignment of the grains in the horizontal flow direction during random dynamic settling under gravity.http://journal.multiphysics.org/index.php/IJM/article/view/231 |
| spellingShingle | L Akanji G Nasr S Matthai Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods International Journal of Multiphysics |
| title | Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods |
| title_full | Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods |
| title_fullStr | Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods |
| title_full_unstemmed | Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods |
| title_short | Estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods |
| title_sort | estimation of hydraulic anisotropy of unconsolidated granular packs using finite element methods |
| url | http://journal.multiphysics.org/index.php/IJM/article/view/231 |
| work_keys_str_mv | AT lakanji estimationofhydraulicanisotropyofunconsolidatedgranularpacksusingfiniteelementmethods AT gnasr estimationofhydraulicanisotropyofunconsolidatedgranularpacksusingfiniteelementmethods AT smatthai estimationofhydraulicanisotropyofunconsolidatedgranularpacksusingfiniteelementmethods |