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Olav Møyner

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Olav Møyner

Forsker

Olav Møyner
Telefon: +47 990 24 949
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Avdeling: Mathematics and Cybernetics
Kontorsted: Oslo

Publikasjoner og ansvarsområder

Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1803030

We discuss how to introduce local time-step refinements in a sequential implicit method for multiphase flow in porous media. Our approach relies heavily on causality-based optimal ordering, which implies that cells can be ordered according to total fluxes after the pressure field has been computed, ...

Forfattere Gaute Linga Olav Møyner Halvor Møll Nilsen Moncorgé Arthur Knut-Andreas Lie
År 2020
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1815343

In this work, we review a set of consistent discretizations for second-order elliptic equations, and compare and contrast them with respect to accuracy, monotonicity, and factors affecting their computational cost (degrees of freedom, sparsity, and condition numbers). Our comparisons include the lin...

År 2020
Type Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1831073

Thermal energy from medium to high-enthalpy aquifers is an appealing energy resource: it is renewable, always on, and, at least in principle, available anywhere on the planet. Moreover, and perhaps equally important, aquifers are excellent candidates for flexible large-scale energy storage. This is ...

År 2020
Type Vitenskapelig foredrag
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1695585

Many authors have used higher-order spatial discretizations to reduce numerical diffusion, which can be particularly pronounced when simulating EOR processes involving active chemical substances that are transported by linear or weakly nonlinear waves. Most high-resolution methods reported in the li...

Forfattere Knut-Andreas Lie Trine Solberg Mykkeltvedt Olav Møyner
År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1695586

A number of different multiscale methods have been developed as a robust alternative to upscaling and as a means for accelerated reservoir simulation of high-resolution geomodels. In their basic setup, multiscale methods use a restriction operator to construct a reduced system of flow equations on a...

År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1689897

Higher-order methods have only been applied to a limited extent in simulation of real petroleum assets. Possible reasons are complex grid formats (unstructured, polyhedral cells, large aspect ratios) and need for implicit time discretization. I this talk, we outline how weighted essentially non-osci...

Forfattere Øystein Klemetsdal Knut-Andreas Lie Olav Møyner Trine Solberg Mykkeltvedt
År 2019
Type Vitenskapelig foredrag
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1689896

Many multiscale methods for solving elliptic/parabolic flow equations can be written in operator form using a restriction and a prolongation operator defined over a coarse partition of an underlying fine grid. The restriction operator constructs a reduced system of flow equations on the coarse parti...

År 2019
Type Vitenskapelig foredrag