Network modelling of fluid retention behaviour in unsaturated soils
The paper describes discrete modelling of the retention behaviour of unsaturated porous materials. A network approach is used within a statistical volume element (SVE), suitable for subsequent use in hydro-mechanical analysis and incorporation within multi-scale numerical modelling. The soil pore st...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2016-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/e3sconf/20160911016 |
| _version_ | 1818614703430041600 |
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| author | Athanasiadis Ignatios Wheeler Simon J. Grassl Peter |
| author_facet | Athanasiadis Ignatios Wheeler Simon J. Grassl Peter |
| author_sort | Athanasiadis Ignatios |
| collection | DOAJ |
| description | The paper describes discrete modelling of the retention behaviour of unsaturated porous materials. A network approach is used within a statistical volume element (SVE), suitable for subsequent use in hydro-mechanical analysis and incorporation within multi-scale numerical modelling. The soil pore structure is modelled by a network of cylindrical pipes connecting spheres, with the spheres representing soil voids and the pipes representing inter-connecting throats. The locations of pipes and spheres are determined by a Voronoi tessellation of the domain. Original aspects of the modelling include a form of periodic boundary condition implementation applied for the first time to this type of network, a new pore volume scaling technique to provide more realistic modelling and a new procedure for initiating drying or wetting paths in a network model employing periodic boundary conditions. Model simulations, employing two linear cumulative probability distributions to represent the distributions of sphere and pipe radii, are presented for the retention behaviour reported from a mercury porosimetry test on a sandstone. |
| first_indexed | 2024-12-16T16:22:14Z |
| format | Article |
| id | doaj.art-13205c72cdf44f538243fa750809916c |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-16T16:22:14Z |
| publishDate | 2016-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-13205c72cdf44f538243fa750809916c2022-12-21T22:24:52ZengEDP SciencesE3S Web of Conferences2267-12422016-01-0191101610.1051/e3sconf/20160911016e3sconf_eunsat2016_11016Network modelling of fluid retention behaviour in unsaturated soilsAthanasiadis IgnatiosWheeler Simon J.Grassl PeterThe paper describes discrete modelling of the retention behaviour of unsaturated porous materials. A network approach is used within a statistical volume element (SVE), suitable for subsequent use in hydro-mechanical analysis and incorporation within multi-scale numerical modelling. The soil pore structure is modelled by a network of cylindrical pipes connecting spheres, with the spheres representing soil voids and the pipes representing inter-connecting throats. The locations of pipes and spheres are determined by a Voronoi tessellation of the domain. Original aspects of the modelling include a form of periodic boundary condition implementation applied for the first time to this type of network, a new pore volume scaling technique to provide more realistic modelling and a new procedure for initiating drying or wetting paths in a network model employing periodic boundary conditions. Model simulations, employing two linear cumulative probability distributions to represent the distributions of sphere and pipe radii, are presented for the retention behaviour reported from a mercury porosimetry test on a sandstone.http://dx.doi.org/10.1051/e3sconf/20160911016 |
| spellingShingle | Athanasiadis Ignatios Wheeler Simon J. Grassl Peter Network modelling of fluid retention behaviour in unsaturated soils E3S Web of Conferences |
| title | Network modelling of fluid retention behaviour in unsaturated soils |
| title_full | Network modelling of fluid retention behaviour in unsaturated soils |
| title_fullStr | Network modelling of fluid retention behaviour in unsaturated soils |
| title_full_unstemmed | Network modelling of fluid retention behaviour in unsaturated soils |
| title_short | Network modelling of fluid retention behaviour in unsaturated soils |
| title_sort | network modelling of fluid retention behaviour in unsaturated soils |
| url | http://dx.doi.org/10.1051/e3sconf/20160911016 |
| work_keys_str_mv | AT athanasiadisignatios networkmodellingoffluidretentionbehaviourinunsaturatedsoils AT wheelersimonj networkmodellingoffluidretentionbehaviourinunsaturatedsoils AT grasslpeter networkmodellingoffluidretentionbehaviourinunsaturatedsoils |