Klaus Johannsen
Klaus Johannsen
Uni Research AS
Verified email at uni.no
TitleCited byYear
UG–a flexible software toolbox for solving partial differential equations
P Bastian, K Birken, K Johannsen, S Lang, N Neuß, H Rentz-Reichert, ...
Computing and Visualization in Science 1 (1), 27-40, 1997
5341997
The saltpool benchmark problem–numerical simulation of saltwater upconing in a porous medium
K Johannsen, W Kinzelbach, S Oswald, G Wittum
Advances in Water Resources 25 (3), 335-348, 2002
1122002
On the time scales of nonlinear instability in miscible displacement porous media flow
MT Elenius, K Johannsen
Computational Geosciences 16 (4), 901-911, 2012
552012
On the validity of the Boussinesq approximation for the Elder problem
K Johannsen
Computational Geosciences 7 (3), 169-182, 2003
522003
A contribution to risk analysis for leakage through abandoned wells in geological CO2 storage
A Kopp, PJ Binning, K Johannsen, R Helmig, H Class
Advances in Water Resources 33 (8), 867-879, 2010
482010
Numerical simulation of three-dimensional saltwater–freshwater fingering instabilities observed in a porous medium
K Johannsen, S Oswald, R Held, W Kinzelbach
Advances in water resources 29 (11), 1690-1704, 2006
432006
A parallel software-platform for solving problems of partial differential equations using unstructured grids and adaptive multigrid methods
P Bastian, K Birken, K Johannsen, S Lang, V Reichenberger, C Wieners, ...
High Performance Computing in Science and Engineering’98, 326-339, 1999
391999
Parallel solution of partial differential equations with adaptive multigrid methods on unstructured grids
P Bastian, K Birken, K Johannsen, S Lang, V Reichenberger, C Wieners, ...
High Performance Computing in Science and Engineering’99, 496-508, 2000
362000
Modeling transverse dispersion and variable density flow in porous media
HM Nick, R Schotting, M Gutierrez-Neri, K Johannsen
Transport in porous media 78 (1), 11-35, 2009
272009
Robuste Mehrgitterverfahren für die Konvektions-Diffusions-Gleichung mit wirbelbehafteter Konvektion
K Johannsen
Springer-Verlag, 2000
182000
The Elder problem—bifurcations and steady state solutions
K Johannsen
Developments in Water Science 47, 485-492, 2002
142002
Co2 trapping in sloping aquafiers: High resolution numerical simulations
M Elenius, HA Tchelep, K Johannsen
Convective mixing in geological carbon storage, 2010
132010
Density-dependent dispersion in heterogeneous porous media Part I: A numerical study
AJ Landman, K Johannsen, R Schotting
Advances in water resources 30 (12), 2467-2480, 2007
122007
A symmetric smoother for the nonsymmetric interior penalty discontinuous Galerkin discretization
K Johannsen
ICES Report 5, 23, 2005
112005
Advances in high-performance computing: Multigrid methods for partial differential equations and its applications
P Bastian, K Johannsen, S Lang, S Nägele, C Wieners, V Reichenberger, ...
High performance computing in science and engineering 2000, 506-519, 2001
92001
Robust smoothers for convection-diffusion problems
K Johannsen
Preprint IWR, University of Heidelberg, Heidelberg, Germany, 1999
81999
An aligned 3D-finite-volume method for convection-diffusion problems
K Johannsen
Modeling and Computation in Environmental Sciences, 227-243, 1997
71997
High-accuracy simulation of density driven flow in porous media
P Bastian, K Johannsen, S Lang, C Wieners, V Reichenberger, G Wittum
High Performance Computing in Science and Engineering’01, 500-511, 2002
62002
The Elder Problem
JW Elder, CT Simmons, HJ Diersch, P Frolkovič, E Holzbecher, ...
Fluids 2 (1), 11, 2017
52017
Multigrid methods for NIPG
K Johannsen
ICES Report, 05-31, 2005
52005
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