Coupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocks

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dc.contributor.authorMaedo, Michael A.
dc.contributor.authorSanchez, Marcelo
dc.contributor.authorFabbri, Heber
dc.contributor.authorCleto, Pedro [UNESP]
dc.contributor.authorGuimaraes, Leonardo J. N.
dc.contributor.authorManzoli, Osvaldo L. [UNESP]
dc.contributor.institutionTexas A&M Univ
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.date.accessioned2021-06-25T15:02:56Z
dc.date.available2021-06-25T15:02:56Z
dc.date.issued2021-04-22
dc.description.abstractWe 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.en
dc.description.affiliationTexas A&M Univ, Zachry Dept Civil & Environm Engn, College Stn, TX USA
dc.description.affiliationSao Paulo State Univ, Dept Civil & Environm Engn, Bauru, SP, Brazil
dc.description.affiliationUniv Fed Pernambuco, Dept Civil Engn, Recife, PE, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Civil & Environm Engn, Bauru, SP, Brazil
dc.description.sponsorshipNEUP (Nuclear Energy University Program), DOE (Department of Energy), USA
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdNEUP (Nuclear Energy University Program), DOE (Department of Energy), USA: DE-NE0008762
dc.description.sponsorshipIdNEUP (Nuclear Energy University Program), DOE (Department of Energy), USA: 18-15585
dc.description.sponsorshipIdCNPq: 234003/2014-6
dc.format.extent23
dc.identifierhttp://dx.doi.org/10.1007/s00603-021-02387-1
dc.identifier.citationRock Mechanics And Rock Engineering. Wien: Springer Wien, 23 p., 2021.
dc.identifier.doi10.1007/s00603-021-02387-1
dc.identifier.issn0723-2632
dc.identifier.urihttp://hdl.handle.net/11449/210258
dc.identifier.wosWOS:000642375100001
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofRock Mechanics And Rock Engineering
dc.sourceWeb of Science
dc.subjectCoupled thermo-hydro-mechanical analysis
dc.subjectHydraulic fracturing
dc.subjectThermal fracturing
dc.subjectMesh fragmentation technique
dc.subjectNumerical modeling
dc.titleCoupled Thermo-Hydro-Mechanical Numerical Modeling of Evolving Fractures in Rocksen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.departmentEngenharia Civil e Ambiental - FEBpt

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Bauru - FEB - Faculdade de Engenharia