Show simple item record

dc.contributor.advisorSánchez, Marcelo
dc.creatorAndrade Maedo, Michael
dc.date.accessioned2019-11-25T19:49:26Z
dc.date.created2019-08
dc.date.issued2019-05-16
dc.date.submittedAugust 2019
dc.identifier.urihttps://hdl.handle.net/1969.1/186305
dc.description.abstractThe process of evolving discontinuities (in the form of fractures, cracks or fissures) in porous media is a very complex problem and possesses several challenges. This research proposal aims to progress the current understanding in this area by developing a fully coupled thermo-hydromechanical (THM) approach. The discontinuity will be modeled by using the mesh fragmentation technique (MFT), which consists of introducing finite elements with high aspect ratio between the standard (bulk) elements of the mesh. This new methodology has been successfully employed in concrete structures and soils, but by only assuming the mechanical problem. In this dissertation, the mass and heat flows are also incorporated in the formulation by considering THM processes. The MFT has been implemented in the in house CODE_BRIGHT finite element program, which was originally developed to solve coupled THM problems in continuous porous media. In this context, numerical simulations were performed in order to achieve a better understanding of discontinuities under complex conditions, mimicking desiccation tests in soils and energy production in rock reservoirs. The results have shown that the technique is very promising to model the formation and propagation of discontinuities in geo-engineering problems.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.subjectevolving discontinuitiesen
dc.subjectporous mediaen
dc.subjectfully coupled thermo-hydro-mechanical approachen
dc.subjectfinite elements with high aspect ratioen
dc.subjectmesh fragmentation techniqueen
dc.titleFully Coupled Thermo-Hydro-Mechanical Modeling of Discontinuities in Porous Media Incorporating High Aspect Ratio Interface Elementsen
dc.typeThesisen
thesis.degree.departmentCivil and Environmental Engineeringen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorTexas A&M Universityen
thesis.degree.nameDoctor of Philosophyen
thesis.degree.levelDoctoralen
dc.contributor.committeeMemberNeedleman, Alan
dc.contributor.committeeMemberAubeny, Charles
dc.contributor.committeeMemberCha, Minsu
dc.contributor.committeeMemberLytton, Robert
dc.type.materialtexten
dc.date.updated2019-11-25T19:49:26Z
local.embargo.terms2021-08-01
local.embargo.lift2021-08-01
local.etdauthor.orcid0000-0001-7289-3221


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record