Browsing Bergen Open Research Archive by Author "Stefansson, Ivar"
Now showing items 1-9 of 9
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A Comparison of Two Numerical Models for Flow in Fractured Porous Media and the Impact of Fracture Intersection Cell Removal
Stefansson, Ivar (Master thesis, 2016-11-21)The simulation of flow and transport in fractured porous media is crucial to improve understanding and viability of geothermal energy. It is also challenging, due to complex geometries and large scale differences. In this ... -
Flexible and rigorous numerical modelling of multiphysics processes in fractured porous media using PorePy
Stefansson, Ivar; Varela, Jhabriel; Keilegavlen, Eirik; Berre, Inga (Journal article; Peer reviewed, 2024)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 characterized by strong ... -
A fully coupled numerical model of thermo-hydro-mechanical processes and fracture contact mechanics in porous media
Stefansson, Ivar; Keilegavlen, Eirik; Berre, Inga (Journal article; Peer reviewed, 2021)Various phenomena in the subsurface are characterised by the interplay between deforming structures such as fractures and coupled thermal, hydraulic and mechanical processes. Simulation of subsurface dynamics can provide ... -
Hydro-mechanical simulation and analysis of induced seismicity for a hydraulic stimulation test at the Reykjanes geothermal field, Iceland
Keilegavlen, Eirik; Duboeuf, Laure; Dichiarante, Anna Maria; Halldorsdottir, Sæunn; Stefansson, Ivar; Naumann, Marcel; Guðnason, Egill Árni; Ágústsson, Kristján; Eggertsson, Guðjón Helgi; Oye, Volker; Berre, Inga (Journal article; Peer reviewed, 2021)The combination of seismic analysis with advanced physics-based simulation provides an opportunity to further understand injection-induced fault reactivation, including the hydro-mechanical interplay between different ... -
Implementation of mixed-dimensional models for flow in fractured porous media
Keilegavlen, Eirik; Fumagalli, Alessio; Berge, Runar Lie; Stefansson, Ivar (Peer reviewed; Journal article, 2019)Models that involve coupled dynamics in a mixed-dimensional geometry are of increasing interest in several applications. Here, we describe the development of a simulation model for flow in fractured porous media, where the ... -
Modelling and simulation of thermo-hydro-mechanical processes in fractured porous media
Stefansson, Ivar (Doctoral thesis, 2021-02-26)Understanding and predicting processes in fractured porous media is of wide interest, with applications such as geothermal energy extraction, water management and storage of CO$_2$ and energy. Characterisation and monitoring ... -
Numerical Modelling of Convection‑Driven Cooling, Deformation and Fracturing of Thermo‑Poroelastic Media
Stefansson, Ivar; Keilegavlen, Eirik; Halldorsdottir, Sæunn; Berre, Inga (Journal article; Peer reviewed, 2021)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. ... -
Numerical Treatment of State-Dependent Permeability in Multiphysics Problems
Stefansson, Ivar; Keilegavlen, Eirik (Journal article; Peer reviewed, 2023)Constitutive laws relating fluid potentials and fluxes in a nonlinear manner are common in several porous media applications, including biological and reactive flows, poromechanics, and fracture deformation. Compared to ... -
PorePy: an open-source software for simulation of multiphysics processes in fractured porous media
Keilegavlen, Eirik; Berge, Runar Lie; Fumagalli, Alessio; Starnoni, Michele; Stefansson, Ivar; Varela, Jhabriel; Berre, Inga (Journal article; Peer reviewed, 2021)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 ...