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DTSTAMP:20210916T132528Z
LOCATION:Louis Favre
DTSTART;TZID=Europe/Stockholm:20210707T110000
DTEND;TZID=Europe/Stockholm:20210707T130000
UID:submissions.pasc-conference.org_PASC21_sess141@linklings.com
SUMMARY:High-Resolution and Large-Scale Numerical Simulations for Fracture
 d Porous Media, Part I
DESCRIPTION:Minisymposium\n\nFractures are ubiquitous at different scales 
 in the subsurface regions, and can strongly dominate the hydraulic and mec
 hanical response of such regions. Understanding their distribution, connec
 tivity, initiation, and propagation is fundamental for several application
 s, such as geothermal energy production, hydrocarbon exploration, hydrauli
 c stimulation and induced-seismicity assessment, CO2 storage. Modelling re
 alistic fracture networks introduces several challenges, and, in the liter
 ature, several methods have been introduced to handle with the multiscale 
 and multiphysics phenomena underlying the geophysics applications, includi
 ng phase-field models for fracture initiation and propagation, hydro-mecha
 nical and thermo-hydro-mechano-chemical coupling for fractured poroelastic
  media. For these kinds of problems, accurate and realistic discretization
  methods for fractured porous media hence give rise to large-scale problem
 s for which modern high-performance computing architectures, such as hybri
 d GPU-CPU supercomputers, are necessary for efficient simulations. The goa
 l of this mini-symposium is to bring together applied researchers and comp
 utational scientists working on the simulation of fractured porous media, 
 with a particular focus on geoscientific applications. The presentations w
 ill be focused on the major challenges of the field and the most recent de
 velopments of HPC and large-scale software.\n\nA large scale phase-field f
 racture simulations\n\nKopanicakova, Krause\n\nThe phase-field approach to
  fracture models crack paths with a possibly complex topology by means of 
 a diffusive damage variable, which is coupled to elasticity. The numerical
  solution of the underlying model is computationally challenging as it req
 uires a solution of large-scale, non- convex, bound...\n\n----------------
 -----\nEfficient decoupling methods with applications to the Biot equation
 s and phase-field for brittle fracture\n\nStorvik\n\nDecoupling methods ar
 e popular and often efficient for solving coupled systems of equations. Th
 ey enable the use of optimized software for each subsystem and can be used
  in combination with nonlinear solvers, as preconditioners and might add r
 obustness compared to monolithic solvers. However, they m...\n\n----------
 -----------\nA Fast Boundary Element Based Solver for Localized Inelastic 
 Deformations\n\nCiardo\n\nWe present a numerical method for the solution o
 f nonlinear geo-mechanical problems involving localized deformations along
  shear bands or structural discontinuities, such as faults and fractures. 
 We use the boundary element method to solve for quasi-static elastic defor
 mation of the medium, while ri...\n\n---------------------\nHigh-Resolutio
 n Numerical Simulation of Biot's Poroelastic Equations Using Multiple GPUs
 \n\nAlkhimenkov, Khakimova, Räss, Quintal, Podladchikov\n\nBiot’s th
 eory describes the coupled solid-fluid deformation in a porous medium. Thi
 s theory can be used to model fractured media, induced seismicity, etc. Th
 e dynamic response of an isotropic two phase media results in two longitud
 inal waves (fast and slow) and one shear wave. Depending on the...\n\n\nDo
 main: CS and Math, Solid Earth Dynamics, Engineering
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