Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability
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| Published in: | Геофизический журнал |
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| Date: | 2010 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Інститут геофізики ім. С.I. Субботіна НАН України
2010
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/101315 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability / B. Galvan, S. Miller // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 49-50. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859717050704855040 |
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| author | Galvan, B. Miller, S. |
| author_facet | Galvan, B. Miller, S. |
| citation_txt | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability / B. Galvan, S. Miller // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 49-50. — англ. |
| collection | DSpace DC |
| container_title | Геофизический журнал |
| first_indexed | 2025-12-01T08:12:57Z |
| format | Article |
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Ancient CPU-GPU simulation of evolving fracture networks
in a poro-elasto-plastic medium
with pressure-dependent permeability
B. Galvan, S. Miller, 2010
Bonn University, Bonn, Germany
Fluid flow in the earth is controlled by fracture
networks that evolve in response to far field stress,
local stress perturbations, and the pressure state
of the fluid within them. The se-processes are very
important for many geophysical systems, including
earthquakes and volcanoes. Modelling the underly-
ing physics is challenging because the time scales
involved, from the elastic wave speed of crack growth
to pressure diffusion and flow, make the se-prob-
lems numerically cumbersome. Our approach to
model the se-processes is to couple the elastic-
plastic response of the solid porous matrix to a pres-
sure dependent (nonlinear) diffusion model for the
Fig. 1. CPU-GPU Poro-elasticity: 800 400points, grid size of 25 m. One day of simulation. Computation time: 42 min.
Fig. 2. Poro-elasto-plastic CPU (MATLAB): 150 100 points. Grid size is133 min X and 90 min Y. One day of simulation.
Computation time: about 7 hours.
fluid flow. Changes in the fluid pressure introduce
changes in stresses in the porous media, which
may lead to either hydro-facture or shear fracture
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within the solid. See page forces, forces related by
gradients of pore pressure, can also promote delo-
calized crack formation. Many models of fracture
propagation have been developed using finite ele-
ments or other numerical methods in order to over-
come the high deformation of the grid, however costly
re-meshing algorithms are necessary to accurate
model the evolving crack. The complete model, non-
linear diffusion and poro-elasto-plasticity, is very
computationally expensive. GPU technology allows
high resolution modelling and easy implementation
of explicit finite difference methods in an efficient
way. We have taken advantage of many-cores GPU
technology together with CPU and developed a high-
resolution fully explicit finite difference model of
nonlinear diffusion coupled with the mechanical re-
sponse of poro-elasto-plastic medium (Fig. 1). In
our algorithm, we can model both the propagation
of previously de?ned fractures and fracture genera-
tion and growth in response to the evolving stress
field. Our model includes shear and tensile cracking,
which plays a dominant role in the hydraulic proper-
ties of the poro-elastic media as well as changes in
the rheological properties. High resolution 2D simu-
lations are presented showing the hydro-mechani-
cal evolution of systems driven by high pressure
sources at depth, such as some aftershock se-
quences and with application to volcano-mechanics.
Using CPU-GPU approach numerical resolution can
be increased to more than three times and compu-
tational time is decreased as much as at enth-com-
pared with the CPU alone approach (Fig. 2).
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| id | nasplib_isofts_kiev_ua-123456789-101315 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0203-3100 |
| language | English |
| last_indexed | 2025-12-01T08:12:57Z |
| publishDate | 2010 |
| publisher | Інститут геофізики ім. С.I. Субботіна НАН України |
| record_format | dspace |
| spelling | Galvan, B. Miller, S. 2016-06-02T14:24:23Z 2016-06-02T14:24:23Z 2010 Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability / B. Galvan, S. Miller // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 49-50. — англ. 0203-3100 https://nasplib.isofts.kiev.ua/handle/123456789/101315 en Інститут геофізики ім. С.I. Субботіна НАН України Геофизический журнал Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability Article published earlier |
| spellingShingle | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability Galvan, B. Miller, S. |
| title | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability |
| title_full | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability |
| title_fullStr | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability |
| title_full_unstemmed | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability |
| title_short | Ancient CPU-GPU simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability |
| title_sort | ancient cpu-gpu simulation of evolving fracture networks in a poro-elasto-plastic medium with pressure-dependent permeability |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/101315 |
| work_keys_str_mv | AT galvanb ancientcpugpusimulationofevolvingfracturenetworksinaporoelastoplasticmediumwithpressuredependentpermeability AT millers ancientcpugpusimulationofevolvingfracturenetworksinaporoelastoplasticmediumwithpressuredependentpermeability |