Modeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorTexas A&M University-
Autor(es): dc.contributorUniversidad Federal de Uberlandia-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorFabbri, Heber-
Autor(es): dc.creatorSánchez, Marcelo-
Autor(es): dc.creatorMaedo, Michael-
Autor(es): dc.creatorCleto, Pedro-
Autor(es): dc.creatorManzoli, Osvaldo-
Data de aceite: dc.date.accessioned2025-08-21T15:44:38Z-
Data de disponibilização: dc.date.available2025-08-21T15:44:38Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.compgeo.2022.105148-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/246459-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/246459-
Descrição: dc.descriptionCompacted 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.-
Descrição: dc.descriptionZachry Department of Civil and Environmental Engineering Texas A&M University-
Descrição: dc.descriptionDepartment of Civil and Environmental Engineering Universidad Federal de Uberlandia-
Descrição: dc.descriptionDepartment of Civil and Environmental Engineering Sao Paulo State University-
Descrição: dc.descriptionDepartment of Civil and Environmental Engineering Sao Paulo State University-
Idioma: dc.languageen-
Relação: dc.relationComputers and Geotechnics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBreakthrough gas pressure coupled hydro-mechanical modeling-
Palavras-chave: dc.subjectDiscrete fracture model-
Palavras-chave: dc.subjectGas migration in compacted clay barriers-
Palavras-chave: dc.subjectMesh fragmentation technique-
Título: dc.titleModeling gas breakthrough and flow phenomena through engineered barrier systems using a discrete fracture approach-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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