Blar i NTNU Open på forfatter "Nilsen, Halvor Møll"
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Efficient flow diagnostics proxies for polymer flooding
Krogstad, Stein; Lie, Knut-Andreas; Nilsen, Halvor Møll; Berg, Carl Fredrik; Kippe, Vegard (Journal article; Peer reviewed, 2017)Flow diagnostics refers to a family of numerical methods that within a few seconds can compute visually intuitive quantities illuminating flow patterns and well connections for full 3D reservoir models. The starting point ... -
Evaluating thermal losses and storage capacity in high-temperature aquifer thermal energy storage (HT-ATES) systems with well operating limits: insights from a study-case in the Greater Geneva Basin, Switzerland
Collignon, Marine; Klemetsdal, Øystein Strengehagen; Møyner, Olav; Alcanié, Marion; Rinaldi, Antonio Pio; Nilsen, Halvor Møll; Lupi, Matteo (Peer reviewed; Journal article, 2020)High-temperature aquifer thermal energy storage (HT-ATES) may play a key role in the development of sustainable energies and thereby in the overall reduction of CO2 emission. To this end, a thorough understanding of the ... -
Simulations of Underground Storage of Natural Gas
Gjerde, Ingeborg Gåseby (Master thesis, 2016)The purpose of this thesis is to simulate fluid flows in aquifers used for natural gas storage. An introduction is given to aquifer flow modelling, and two models are developed that describe two-phase flow in porous media. ... -
The Virtual Element Method as a Common Framework for Finite Element and Finite Difference Methods - Numerical and Theoretical Analysis
Klemetsdal, Øystein S (Master thesis, 2016)Consistent discretizations of differential equations on polygonal and polyhedral grids is an active area of research. This is of particular interest in applications where the grid is constructed to capture the physical ...