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DTSTAMP:20210916T132451Z
LOCATION:Louis Favre
DTSTART;TZID=Europe/Stockholm:20210707T143000
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UID:submissions.pasc-conference.org_PASC21_sess153_msa198@linklings.com
SUMMARY:Mixed-Dimensional Model for Two-Phase Flow and Mechanical Deformat
 ions in Fractured Poroelastic Media
DESCRIPTION:Minisymposium\n\nMixed-Dimensional Model for Two-Phase Flow an
 d Mechanical Deformations in Fractured Poroelastic Media\n\nGläser, Flemis
 ch, Helmig\n\nMost geological systems involve rocks that are broken up by 
 fractures and which may substantially alter the hydraulic and mechanical b
 ehavior of a rock mass. However, numerical modeling of flow and deformatio
 n processes of fractured porous rock is challenging due to the complex geo
 metries involved in arbitrary networks of fractures, and the typically ver
 y small fracture apertures in comparison with the spatial scales of intere
 st in most applications. Due to this difference in scales, a widely-used a
 pproach is to describe the fractures as lower-dimensional objects, which c
 ircumvents the need to discretize the interior of the fractures. In this w
 ork, we present such a mixed-dimensional model for two-phase flow in fract
 ured poroelastic media, taking into account mechanical deformations of the
  bulk porous medium. A conforming discretization is chosen, where the face
 s of the elements used to discretize the bulk porous medium are aligned wi
 th the lower-dimensional fractures. Moreover, the transition to a contact 
 mechanical problem in the case of closing fractures is included in the mod
 el. Preliminary results show that the model is able to capture the complex
  interactions between fracture deformation and transport phenomena, includ
 ing dynamically changing preferential flowpaths as a consequence of mechan
 ical deformations.\n\nDomain: CS and Math, Solid Earth Dynamics
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