Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Stefansson, Ivar"'
Autor:
Stefansson, Ivar
Models for multiphysics problems often contain strong nonlinearities. Including fracture contact mechanics introduces discontinuities at the transition between open and closed or sliding and sticking fractures. The resulting system of equations is hi
Externí odkaz:
http://arxiv.org/abs/2407.01184
Multiphysics processes in fractured porous media is a research field of importance for several subsurface applications and has received considerable attention over the last decade. The dynamics are characterised by strong couplings between processes
Externí odkaz:
http://arxiv.org/abs/2308.04233
Convection-driven cooling in porous media influences thermo-poro-mechanical stresses, thereby causing deformation. These processes are strongly influenced by the presence of fractures, which dominate flow and heat transfer. At the same time, the frac
Externí odkaz:
http://arxiv.org/abs/2012.06493
Publikováno v:
In Results in Applied Mathematics February 2024 21
Autor:
Keilegavlen, Eirik, Duboeuf, Laure, Dichiarante, Anna Maria, Halldórsdóttir, Sæunn, Stefansson, Ivar, Naumann, Marcel, Guðnason, Egill Árni, Ágústsson, Kristján, Eggertsson, Guðjón Helgi, Oye, Volker, Berre, Inga
The hydraulic stimulation of the well RN-34 at the Reykjanes geothermal field in Iceland caused increased seismic activity near the well. Here, we use this as a case study for investigation on how seismic analysis can be combined with physics-based s
Externí odkaz:
http://arxiv.org/abs/2011.03370
Publikováno v:
The Leading Edge 39, no. 12 (2020): 893-900
Hydraulic stimulation of geothermal reservoirs in low-permeability basement and crystalline igneous rock can enhance permeability by reactivation and shear dilation of existing fractures. The process is characterized by interaction between fluid flow
Externí odkaz:
http://arxiv.org/abs/2008.11190
A range of phenomena in the subsurface is characterised by the interplay between coupled thermal, hydraulic and mechanical processes and deforming structures such as fractures. Modelling subsurface dynamics can provide valuable phenomenological under
Externí odkaz:
http://arxiv.org/abs/2008.06289
Autor:
Berre, Inga, Boon, Wietse M., Flemisch, Bernd, Fumagalli, Alessio, Gläser, Dennis, Keilegavlen, Eirik, Scotti, Anna, Stefansson, Ivar, Tatomir, Alexandru, Brenner, Konstantin, Burbulla, Samuel, Devloo, Philippe, Duran, Omar, Favino, Marco, Hennicker, Julian, Lee, I-Hsien, Lipnikov, Konstantin, Masson, Roland, Mosthaf, Klaus, Nestola, Maria Giuseppina Chiara, Ni, Chuen-Fa, Nikitin, Kirill, Schädle, Philipp, Svyatskiy, Daniil, Yanbarisov, Ruslan, Zulian, Patrick
Flow in fractured porous media occurs in the earth's subsurface, in biological tissues, and in man-made materials. Fractures have a dominating influence on flow processes, and the last decade has seen an extensive development of models and numerical
Externí odkaz:
http://arxiv.org/abs/2002.07005
This paper presents a model where thermo-hydro-mechanical processes are coupled to a deformation model for preexisting fractures. The model is formulated within a discrete-fracture-matrix framework where the rock matrix and the fractures are consider
Externí odkaz:
http://arxiv.org/abs/2002.05935
Autor:
Keilegavlen, Eirik, Berge, Runar, Fumagalli, Alessio, Starnoni, Michele, Stefansson, Ivar, Varela, Jhabriel, Berre, Inga
Development of models and dedicated numerical methods for dynamics in fractured rocks is an active research field, with research moving towards increasingly advanced process couplings and complex fracture networks. The inclusion of coupled processes
Externí odkaz:
http://arxiv.org/abs/1908.09869