Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00603-021-02387-1 http://hdl.handle.net/11449/210258 |
Resumo: | We present a numerical technique capable of handling evolving fractures in rocks triggered by coupled thermo-hydro-mechanical (THM) phenomena. The approach is formulated in the context of the finite-element method (FEM) and consists in introducing especial (high-aspect ratio) finite elements in-between the regular (bulk) finite elements. We called this method the mesh fragmentation technique (MFT). The MFT has been successfully used to model mechanical and hydro-mechanical problems related to drying cracks in soils, fractures in concrete, and hydraulic fractures in rocks. In this paper, we extend the MFT for tackling non-isothermal problems in porous media. We present the main components of the mathematical formulation together with its implementation in a fully coupled THM computer code. The proposed method is verified and validated using available analytical, experimental, and numerical results. A very satisfactory performance of the proposed method is observed in all the analyzed cases. These results are encouraging and show the potential of the MFT to tackle THM applications involving fractured rocks. A clear advantage of the proposed framework is that it can be easily implemented in existing numerical FEM codes for continuous porous media to upgrade them to tackle THM engineering problems with evolving discontinuities. |
id |
UNSP_921cbf792b642087441ff3d17dd84017 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/210258 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in RocksCoupled thermo-hydro-mechanical analysisHydraulic fracturingThermal fracturingMesh fragmentation techniqueNumerical modelingWe present a numerical technique capable of handling evolving fractures in rocks triggered by coupled thermo-hydro-mechanical (THM) phenomena. The approach is formulated in the context of the finite-element method (FEM) and consists in introducing especial (high-aspect ratio) finite elements in-between the regular (bulk) finite elements. We called this method the mesh fragmentation technique (MFT). The MFT has been successfully used to model mechanical and hydro-mechanical problems related to drying cracks in soils, fractures in concrete, and hydraulic fractures in rocks. In this paper, we extend the MFT for tackling non-isothermal problems in porous media. We present the main components of the mathematical formulation together with its implementation in a fully coupled THM computer code. The proposed method is verified and validated using available analytical, experimental, and numerical results. A very satisfactory performance of the proposed method is observed in all the analyzed cases. These results are encouraging and show the potential of the MFT to tackle THM applications involving fractured rocks. A clear advantage of the proposed framework is that it can be easily implemented in existing numerical FEM codes for continuous porous media to upgrade them to tackle THM engineering problems with evolving discontinuities.NEUP (Nuclear Energy University Program), DOE (Department of Energy), USAConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Texas A&M Univ, Zachry Dept Civil & Environm Engn, College Stn, TX USASao Paulo State Univ, Dept Civil & Environm Engn, Bauru, SP, BrazilUniv Fed Pernambuco, Dept Civil Engn, Recife, PE, BrazilSao Paulo State Univ, Dept Civil & Environm Engn, Bauru, SP, BrazilNEUP (Nuclear Energy University Program), DOE (Department of Energy), USA: DE-NE0008762NEUP (Nuclear Energy University Program), DOE (Department of Energy), USA: 18-15585CNPq: 234003/2014-6SpringerTexas A&M UnivUniversidade Estadual Paulista (Unesp)Universidade Federal de Pernambuco (UFPE)Maedo, Michael A.Sanchez, MarceloFabbri, HeberCleto, Pedro [UNESP]Guimaraes, Leonardo J. N.Manzoli, Osvaldo L. [UNESP]2021-06-25T15:02:56Z2021-06-25T15:02:56Z2021-04-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article23http://dx.doi.org/10.1007/s00603-021-02387-1Rock Mechanics And Rock Engineering. Wien: Springer Wien, 23 p., 2021.0723-2632http://hdl.handle.net/11449/21025810.1007/s00603-021-02387-1WOS:000642375100001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRock Mechanics And Rock Engineeringinfo:eu-repo/semantics/openAccess2024-06-28T12:56:41Zoai:repositorio.unesp.br:11449/210258Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:35:10.008937Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks |
title |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks |
spellingShingle |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks Maedo, Michael A. Coupled thermo-hydro-mechanical analysis Hydraulic fracturing Thermal fracturing Mesh fragmentation technique Numerical modeling |
title_short |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks |
title_full |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks |
title_fullStr |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks |
title_full_unstemmed |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks |
title_sort |
Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks |
author |
Maedo, Michael A. |
author_facet |
Maedo, Michael A. Sanchez, Marcelo Fabbri, Heber Cleto, Pedro [UNESP] Guimaraes, Leonardo J. N. Manzoli, Osvaldo L. [UNESP] |
author_role |
author |
author2 |
Sanchez, Marcelo Fabbri, Heber Cleto, Pedro [UNESP] Guimaraes, Leonardo J. N. Manzoli, Osvaldo L. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Texas A&M Univ Universidade Estadual Paulista (Unesp) Universidade Federal de Pernambuco (UFPE) |
dc.contributor.author.fl_str_mv |
Maedo, Michael A. Sanchez, Marcelo Fabbri, Heber Cleto, Pedro [UNESP] Guimaraes, Leonardo J. N. Manzoli, Osvaldo L. [UNESP] |
dc.subject.por.fl_str_mv |
Coupled thermo-hydro-mechanical analysis Hydraulic fracturing Thermal fracturing Mesh fragmentation technique Numerical modeling |
topic |
Coupled thermo-hydro-mechanical analysis Hydraulic fracturing Thermal fracturing Mesh fragmentation technique Numerical modeling |
description |
We present a numerical technique capable of handling evolving fractures in rocks triggered by coupled thermo-hydro-mechanical (THM) phenomena. The approach is formulated in the context of the finite-element method (FEM) and consists in introducing especial (high-aspect ratio) finite elements in-between the regular (bulk) finite elements. We called this method the mesh fragmentation technique (MFT). The MFT has been successfully used to model mechanical and hydro-mechanical problems related to drying cracks in soils, fractures in concrete, and hydraulic fractures in rocks. In this paper, we extend the MFT for tackling non-isothermal problems in porous media. We present the main components of the mathematical formulation together with its implementation in a fully coupled THM computer code. The proposed method is verified and validated using available analytical, experimental, and numerical results. A very satisfactory performance of the proposed method is observed in all the analyzed cases. These results are encouraging and show the potential of the MFT to tackle THM applications involving fractured rocks. A clear advantage of the proposed framework is that it can be easily implemented in existing numerical FEM codes for continuous porous media to upgrade them to tackle THM engineering problems with evolving discontinuities. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T15:02:56Z 2021-06-25T15:02:56Z 2021-04-22 |
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/10.1007/s00603-021-02387-1 Rock Mechanics And Rock Engineering. Wien: Springer Wien, 23 p., 2021. 0723-2632 http://hdl.handle.net/11449/210258 10.1007/s00603-021-02387-1 WOS:000642375100001 |
url |
http://dx.doi.org/10.1007/s00603-021-02387-1 http://hdl.handle.net/11449/210258 |
identifier_str_mv |
Rock Mechanics And Rock Engineering. Wien: Springer Wien, 23 p., 2021. 0723-2632 10.1007/s00603-021-02387-1 WOS:000642375100001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Rock Mechanics And Rock Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
23 |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128952275828736 |