Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.compgeo.2022.105148 http://hdl.handle.net/11449/246459 |
Resumo: | Compacted clays are being considered to build engineered barrier systems (EBS) intended for the safe isolation of high-level nuclear waste (HLW) and spent nuclear fuel (SNF). The corrosion of the metallic canister containing the HLW/SNF will lead to the generation and buildup of the gas pressure in the more internal part of the clay buffer. This phenomenon would eventually trigger the formation and propagation of fractures in the clay barrier, jeopardizing its safety functions. In this work we propose to use the fragmentation technique (MFT) to model evolving fractures in clays triggered by gas pressurization. The MFT has been successfully used to model the formation of fractures in concrete, drying cracks in soil, hydraulic and thermo-fractures in rocks. In this work, we extend the MFT to deal with multiphase fluid flow in deformable porous media, and we upgraded a fully coupled computer finite element code using the extended technique. The proposed approach is first verified against analytical solutions and is then applied to model gas breakthrough experiments in clays. A very satisfactory performance of the method is observed in all the analyses, showing the potential of the MFT to tackle multiphase flow problems in deformable porous media with evolving discontinuities. |
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Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approachBreakthrough gas pressure coupled hydro-mechanical modelingDiscrete fracture modelGas migration in compacted clay barriersMesh fragmentation techniqueCompacted clays are being considered to build engineered barrier systems (EBS) intended for the safe isolation of high-level nuclear waste (HLW) and spent nuclear fuel (SNF). The corrosion of the metallic canister containing the HLW/SNF will lead to the generation and buildup of the gas pressure in the more internal part of the clay buffer. This phenomenon would eventually trigger the formation and propagation of fractures in the clay barrier, jeopardizing its safety functions. In this work we propose to use the fragmentation technique (MFT) to model evolving fractures in clays triggered by gas pressurization. The MFT has been successfully used to model the formation of fractures in concrete, drying cracks in soil, hydraulic and thermo-fractures in rocks. In this work, we extend the MFT to deal with multiphase fluid flow in deformable porous media, and we upgraded a fully coupled computer finite element code using the extended technique. The proposed approach is first verified against analytical solutions and is then applied to model gas breakthrough experiments in clays. A very satisfactory performance of the method is observed in all the analyses, showing the potential of the MFT to tackle multiphase flow problems in deformable porous media with evolving discontinuities.Zachry Department of Civil and Environmental Engineering Texas A&M UniversityDepartment of Civil and Environmental Engineering Universidad Federal de UberlandiaDepartment of Civil and Environmental Engineering Sao Paulo State UniversityDepartment of Civil and Environmental Engineering Sao Paulo State UniversityTexas A&M UniversityUniversidad Federal de UberlandiaUniversidade Estadual Paulista (UNESP)Fabbri, HeberSánchez, MarceloMaedo, MichaelCleto, Pedro [UNESP]Manzoli, Osvaldo [UNESP]2023-07-29T12:41:31Z2023-07-29T12:41:31Z2023-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.compgeo.2022.105148Computers and Geotechnics, v. 154.1873-76330266-352Xhttp://hdl.handle.net/11449/24645910.1016/j.compgeo.2022.1051482-s2.0-85143814326Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengComputers and Geotechnicsinfo:eu-repo/semantics/openAccess2023-07-29T12:41:31Zoai:repositorio.unesp.br:11449/246459Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:21:15.818798Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach |
title |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach |
spellingShingle |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach Fabbri, Heber Breakthrough gas pressure coupled hydro-mechanical modeling Discrete fracture model Gas migration in compacted clay barriers Mesh fragmentation technique |
title_short |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach |
title_full |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach |
title_fullStr |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach |
title_full_unstemmed |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach |
title_sort |
Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach |
author |
Fabbri, Heber |
author_facet |
Fabbri, Heber Sánchez, Marcelo Maedo, Michael Cleto, Pedro [UNESP] Manzoli, Osvaldo [UNESP] |
author_role |
author |
author2 |
Sánchez, Marcelo Maedo, Michael Cleto, Pedro [UNESP] Manzoli, Osvaldo [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Texas A&M University Universidad Federal de Uberlandia Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Fabbri, Heber Sánchez, Marcelo Maedo, Michael Cleto, Pedro [UNESP] Manzoli, Osvaldo [UNESP] |
dc.subject.por.fl_str_mv |
Breakthrough gas pressure coupled hydro-mechanical modeling Discrete fracture model Gas migration in compacted clay barriers Mesh fragmentation technique |
topic |
Breakthrough gas pressure coupled hydro-mechanical modeling Discrete fracture model Gas migration in compacted clay barriers Mesh fragmentation technique |
description |
Compacted clays are being considered to build engineered barrier systems (EBS) intended for the safe isolation of high-level nuclear waste (HLW) and spent nuclear fuel (SNF). The corrosion of the metallic canister containing the HLW/SNF will lead to the generation and buildup of the gas pressure in the more internal part of the clay buffer. This phenomenon would eventually trigger the formation and propagation of fractures in the clay barrier, jeopardizing its safety functions. In this work we propose to use the fragmentation technique (MFT) to model evolving fractures in clays triggered by gas pressurization. The MFT has been successfully used to model the formation of fractures in concrete, drying cracks in soil, hydraulic and thermo-fractures in rocks. In this work, we extend the MFT to deal with multiphase fluid flow in deformable porous media, and we upgraded a fully coupled computer finite element code using the extended technique. The proposed approach is first verified against analytical solutions and is then applied to model gas breakthrough experiments in clays. A very satisfactory performance of the method is observed in all the analyses, showing the potential of the MFT to tackle multiphase flow problems in deformable porous media with evolving discontinuities. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:41:31Z 2023-07-29T12:41:31Z 2023-02-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.compgeo.2022.105148 Computers and Geotechnics, v. 154. 1873-7633 0266-352X http://hdl.handle.net/11449/246459 10.1016/j.compgeo.2022.105148 2-s2.0-85143814326 |
url |
http://dx.doi.org/10.1016/j.compgeo.2022.105148 http://hdl.handle.net/11449/246459 |
identifier_str_mv |
Computers and Geotechnics, v. 154. 1873-7633 0266-352X 10.1016/j.compgeo.2022.105148 2-s2.0-85143814326 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Computers and Geotechnics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128350803197952 |