Publications

J. B. Haga, H. P. Langtangen, and H. Osnes. A parallel block preconditioner for large scale poroelasticity with highly heterogeneous material parameters, Computational Geosciences(online), 2012.

J. B. Haga, H. Osnes, and H. P. Langtangen. On the causes of pressure oscillations in low-permeable and low-compressible porous media, International Journal for Numerical and Analytical Methods in Geomechanics(online), 2011.

J. B. Haga, H. Osnes, and H. P. Langtangen. Efficient block preconditioners for the coupled equations of pressure and deformation in highly discontinuous media, International Journal for Numerical and Analytical Methods in Geomechanics 35(13):1466-1482, 2011.

J. B. Haga, H. P. Langtangen, B. F. Nielsen, and H. Osnes. On the performance of an algebraic multigrid preconditioner for the pressure equation with highly discontinuous media, In: Proceedings of MekIT'09, ed. by B. Skallerud and H. I. Andersson, pp. 191-204, NTNU, Tapir, 2009.

J. B. Haga, H. P. Langtangen, B. F. Nielsen, and H. Osnes. On the Perfermance of an Algebraic Multigrid Preconditioner for the Pressure Equationwith Highly Discontinuous Media, Talk at MekIT'09: Fifth National Conference on Computational Mechanics, Trondheim, May 26-27, 2009.

J. B. Haga, A. M. Bruaset, X. Cai, H. P. Langtangen, H. Osnes, and J. Skogseid. Parallelisation and numerical performance of a 3D model for coupled deformation, fluid flow and heat transfer in sedimentary basins, In: MekIT'07, ed. by B. Skallerud and H. I. Andersson, pp. 151--162, Trondheim, Tapir Academic Press, 2007.

J. B. Haga, H. Osnes, H. P. Langtangen, and A. M. Bruaset. PhD: Simulation of deformation and heat flow in sedimentary basins, Simula, Project report, 2007.

J. B. Haga, A. M. Bruaset, X. Cai, H. P. Langtangen, H. Osnes, and J. Skogseid. Parallelisation and Numerical Performance of a 3D Model for Coupled Deformation, Fluid Flow, and Heat Transport in Porous Geological Formations, Talk at the Fourth National Conference on Computational Mechanics (MekIT'07), Trondheim, Norway, 2007.

T. Thorvaldsen, H. Osnes, and J. Sundnes. A Mixed Finite Element Formulation for a Nonlinear, Transversely Isotropic Material Model for the Cardiac Tissue, Computer Methods in Biomechanics and Biomedical Engineering 8(6):369-379, 2005.

T. Thorvaldsen, J. Sundnes, and H. Osnes. A Mixed Formulation for Modeling the Mechanical Bahavior of the Heart, In: MekIt05 - Third national conference om Computational Mechanics, Trondheim May 11-12, ed. by Bjørn Skallerud and Helge I. Andersson, pp. 327--341, Tapir Academic Press, 2005.

T. Thorvaldsen, J. Sundnes, and H. Osnes. Non-Linear Elasticity with Applications to Heart Mechanics, Simula Research Laboratory, Research Report(2005-16), 2005.

T. Thorvaldsen, H. Osnes, and J. Sundnes. A Mixed FEM for Modeling the Passive Mechanical Properties of the Myocardium, Talk at the SIAM Conference on Computational Science & Engineering, 2005.

T. Thorvaldsen, J. Sundnes, and H. Osnes. Numerical Modeling of Isotropic, Hyperelastic Materials Undergoing Large Deformations, Simula Research Laboratory, Research Report(2004-06), 2004.

H. Osnes. BONDSHIP Guidelines, Recommended Practice, Det Norske Veritas, 2004.

H. Osnes and A. Andersen. Computational Analysis of Geometric Nonlinear Effects in Adhesively Bonded Single Lap Composite Joints, Composites: Part B 34:417-427,, 2003.

B. Hayman, H. Osnes, and D. McGeorge. Non-linear Response of Laterally Loaded FRP Sandwich Panels for High Speed Craft, In: Proceedings of the Fast Sea Transportation (FAST'03), Ischia, Italy, 2003.

H. P. Langtangen and H. Osnes. Stochastic Partial Differential Equations, In: Advanced Topics in Computational Partial Differential Equations -- Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito, pp. 257-320, Springer-Verlag. Lecture Notes in Computational Science and Engineering, 2003.

T. Thorvaldsen, H. P. Langtangen, and H. Osnes. Finite Element Modeling of Elastic Structures, In: Advanced Topics in Computational Partial Differential Equations -- Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito. Springer-Verlag, pp. 507-576. Lecture Notes in Computational Science and Engineering, 2003.

H. Osnes. Composite Components, Offshore Standard, DNV-OS-C501, Det Norske Veritas, 2003.

H. Osnes. Composite Risers, Recommended Practice, DNV-RP-F202, Det Norske Veritas, 2003.

H. Osnes and D. McGeorge. Analysis of Overlaminated Double-Lap Joints, Misc, 2003.

A. T. Echtermeyer, H. Osnes, K. O. Ronold, and E. T. Moe. Recommended Practice for Composite Risers, In: Proceedings of the Offshore Technology Conference, Houston, Texas, USA, 2002.

B. Hayman, H. Osnes, A. Skiple, and D. McGeorge. Exploiting the Non-linear Response of Sandwich Panels in High Speed Craft Design, In: Proceedings of the High Performance Marine Vehicles (HIPER'02), Bergen, Norway, 2002.

H. Osnes. Implementation of a Geometrically Nonlinear Module for CompositeMaterials in Diffpack, University of Oslo, Mechanics and Applied Mathematics Series,, 2001.

A. Andersen, H. Osnes, and J. Hellesland. Computational analysis of Composite Joints, In: Proceedings of the 13th Nordic Seminar on Computational Mechanics, Oslo, Norway, 2000.

A. Andersen and H. Osnes. Computational Analysis of Geometric Nonlinear Effects in Adhesively Bonded Single Lap Composite Joints, University of Oslo, Mechanics and Applied Mathematics Series,, 2000.

A. Andersen and H. Osnes. Computational analysis of Geometric Nonlinear Effects in Adhesively Bonded Single Lap Composite Joints, In: Proceedings of the 12th Nordic Seminar on Computational Mechanics, Helsinki, Finland, 1999.

J. Berge, A. M. Bruaset, H. Erlandsen, E. Holm, L. Ingebrigtsen, H. P. Langtangen, H. Osnes, and T. Rusten. Coupling of PDEs in Diffpack Environments, SINTEF, 1999.

H. Osnes, G. \. Andersen, and J.-B. Osnes. Quantifying the Relative Contributions from Individual alpha-1-Adrenoceptor subtypes by the Monte Carlo Simulation Method, Presentation at Vinterm\o tet for Norsk selskap for farmakologi og toksikologi, Beito, Norway, January 28-30, 1999.

H. Osnes. Stochastic Analysis of Velocity Spatial Variability in Bounded Rectangular Aquifers, Advances in Water Resources 21(3):203-215,, 1998.

H. Osnes and H. P. Langtangen. A study of some finite difference schemes for a uni-directional stochastic treansport equation, SIAM Journal of Scientific Computing 19(3,), 1998.

H. Osnes and H. P. Langtangen. An improved probabilistic finite element method for stochastic groundwater flow, Advances in Water Resources 22:185-195,, 1998.

H. Osnes and H. P. Langtangen. A Study of Some Finite Difference Schemes for a Uni-Directional Stochastic Transport Equation, SIAM Journal of Scientific Computing 19(3):799-812,, 1998.

H. Osnes, G. \. Andersen, and J.-B. Osnes. Quantifying the Relative Contributions from Individual alpha-1-Adrenoceptor subtypes by the Monte Carlo Simulation Method, Hjerteforum 11(1):119-129,, 1998.

H. P. Langtangen and H. Osnes. Stochastic Methods in Diffpack, Oslo Scientific Computing Archive, 1998.

J.-B. Osnes, H. Osnes, and G. \. Andersen. Quantifying the Relative Contribution from Individual alpha-1-Adrenoceptors by the Monte Carlo Simulation Method, Presentation at the Troms\o Seminar in Medicine, Troms\o , Norway, August 30th - September 1st, 1998.

H. P. Langtangen and H. Osnes. Stochastic Methods in Diffpack, SINTEF, The Diffpack Preprint Series, 1997.

H. P. Langtangen and H. Osnes. An Object-Oriented Design of a Simulator for Stochastic Groundwater Flow, SINTEF, The Diffpack Preprint Series, 1997.

H. P. Langtangen and H. Osnes. A Clustered Weighted Integral Method for Stochastic Porous Media Flow, SINTEF, 1997.

H. Osnes. Variance Reduction Techniques for Monte Carlo Simulation, SINTEF, 1997.

J. Berge, H. Erlandsen, L. Ingebrigtsen, H. P. Langtangen, and H. Osnes. An Environment for Reservoir Simulation, Talk at the Fourth SIAM Conference on Computational and Mathematical Issues in the Geosciences, Albuquerque, New Mexico, USA, 1997.

H. Osnes. Stochastic Analysis of Groundwater Flow, Presentation at the Nordic Computational Differential Equations Circus, Oslo, Norway, January 7-8, 1997.

H. Osnes. Stochastic Analysis of Groundwater Flow, PhD thesis, University of Oslo, 1996.

H. Osnes. Stochastic Analysis of Head Spatial Variability in Bounded Rectangular Aquifers, Water Resources Research 31(12):2981-2990, 1995.

H. Osnes. Solution of the Euler Equations by the Finite Element Method, Masters thesis, University of Oslo, 1991.