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Knut-Andreas Lie

Research Manager / Chief Scientist

Knut-Andreas Lie

Research Manager / Chief Scientist

Knut-Andreas Lie
Phone: +47 930 58 721
Department: Mathematics and Cybernetics
Office: Oslo

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+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...

Year 2020
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+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, ...

Authors Linga Gaute Møyner Olav Nilsen Halvor Møll Arthur Moncorgé Lie Knut-Andreas
Year 2020
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1776208

We present a robust and flexible sequential solution approach in which the flow equation is solved on the original grid, whereas the transport equations are solved with a new dynamic coarsening method that adapts the grid resolution locally to reduce the number of cells as much as possible. The resu...

Year 2020
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1737391

The Open Porous Media (OPM) initiative is a community effort that encourages open innovation and reproducible research for simulation of porous media processes. OPM coordinates collaborative software development, maintains and distributes open-source software and open data sets, and seeks to ensure ...

Authors Rasmussen Atgeirr Flø Sandve Tor Harald Bao Kai Lauser Andreas Hove Joakim Skaflestad Bård Klöfkorn Robert Blatt Markus Rustad Alf Birger Sævareid Ove Lie Knut-Andreas Thune Andreas
Year 2020
Type Journal publication