 |
Name: | Steinar Evje |
| Position: | Senior Research Enngeer |
| Research group: | Improved Oil Recovery |
| Email: | Steinar.Evje@iris.no |
| Phone: | (+47) 51 87 50 70 |
Personal information:
Steinar Evje holds a Dr. Scient degree in Applied Mathematics, University of Bergen (1998). He joined Rogaland Research in 1998 and is a member of Petroleum Technology - Research & Development.
Research areas:
Partial differential equations (PDEs), particularly hyperbolic conservation laws
(mathematical theory, numerical approximation and application)
- Well-posedness (existence, uniqueness, stability of solutions) of PDEs
- Discretization of partial differential equations (PDEs in general)
- Modelling of multi-phase flow problems
- Mixed hyperbolic (convection-diffusion) problems
- Design of low-diffusive numerical schemes
Projects:
- Numerical Methods for Multi-phase Wellbore/Reservoir Models
NFR Post doctorial project (Petroforsk), 2000-2001
- Well-Reservoir Interaction
NFR, Strategic Institute Program 2001-2005 (Petroforsk).
- Pressure-based hybrid flux splitting schemes for compressible flows
NFR Post doctorial project for Tore Flåtten (BeMata), 2005-2007.
- Modelling/Simulation of wettability alteration processes in carbonate oil reservoirs
COREC project, 2007.
- Modelling/Simulation of water weakening of chalk - physical and chemical processes, COREC, BP, and NFR, 2008-2010
Recently submitted works:
| Evje, Hiorth, Madland, Korsnes | Chemical Reactions and Weakening of Chalk Reservoirs: Modeling and Experiments, 2009. |
Some publications (in refereed journals):
| Evje, Hiorth, Madland, Korsnes | "A mathematical model relevant for weakening of chalk reservoirs due to chemical reactions", Networks and Heterogeneous Media, Vol 4 (4), pp. 755-788, 2009. |
| S.T.Munkejord, S. Evje, T Flåtten | A MUSTA scheme for a non-conservative two-fluid model, SIAM J. Sci. Comput. Vol 31, pp. 2587-2622, 2009. |
| H.A.Friis, S.Evje and T.Flåtten | "A numerical study of characteristic slow-transient behavior of a compressible 2D gas-liquid two-fluid model"
Adv. Appl. Math. Mech., Vol 1 (2), pp 166-200, 2009. |
| S. Evje and K.H. Karlsen | "Global weak solutions for a viscous liquid-gas model with singular pressure law"
Comm. Pure Appl. Anal, Vol 8 (6), pp 1867-1894, 2009. |
| S.Evje, T.Flåtten and S.T.Munkejord | "A WIMF scheme for the drift-flux two-phase flow model", Multiphase Flow Research. Edt: S. Martin and J.R. Williams, Nova Science Publishers, Inc., 2009. |
| S.Evje and K.H.Karlsen | "Global existence of weak solutions for a viscous two-phase model", J. Diff. Equations, Vol 245, Issue 9, 2008, pp. 2660-2703 |
| S.Evje, T.Flåtten and H.A. Friis | "On a relation between pressure-based schemes and central schemes for hyperbolic conservation laws", Num. Meth. Part. Diff. Eq., Vol 24, Issue 2, 2008, pp. 605-645 |
| S.Evje, T. Flåtten and H.A. Friis | Global weak solutions for a viscous liquid-gas model with transition to single-phase gas flow and vacuum", Nonlinear Analysis,TMA, Vol 70, pp 3864-3886, 2009. |
| Hiorth, a Lad, Evje, Skjæveland | "A Lattice Boltzmann-BGK algorithm for a diffusion equation with Robin boundary condition - application to NMR relaxation"
Int. J. Num Meth Fluids, Vol 59, pp. 405-421, 2009. |
| Yu, Evje, Fjelde, Kleppe et al | "Modelling of wettability alteration processes in carbonate oil reservoirs"
Networks and Heterogeneous Media, Vol 3 (1), 149-183, 2008. |
| S.Evje and K.H.Karlsen | "A hyperbolic-elliptic model for coupled well-porous media flow"
In Eleventh International Conference on Hyperbolic Problems: Theory, Numerics, Applications (Lyon 2006). Edt: S. Benzoni-Gavage and D. Serre, Jan 28, 2008. |
| Yu, Evje, Fjelde, Kleppe et al | "Spontaneous Imbibition of Seawater into Preferentially Oil-Wet Chalk Cores - Experiments and Simulations",
J. Pet. Sci. Eng., Vol 66, pp. 171-179, 2009. |
| S.Evje and K.H.Karlsen | "Hyperbolic-elliptic models for well-reservoir flow"
Networks and Heterogeneous Media, Vol. 4 (1), 639-673, 2006 |
| S.Evje and T.Flåtten | "On the wave structure of two-phase flow models"
SIAM J. Applied math., Vol 67 (2), pp. 487--511, 2007. |
| Munkejord S.T., Evje S., Flåtten T. | "The multi-staged centred scheme approach applied to a drift-flux two-phase flow model",
Int. J. Num. Meth. Fluids, Vol 52 (6), pp. 679-705, 2006 |
| Evje, S., Flåtten, T. | "CFL-violating numerical schemes for a two-fluid model",
J. Sci. Comput, Vol 29 (1), pp. 83-114, 2006 |
| Evje, S., Flåtten, T. | "Hybrid central-upwind schemes for numerical resolution of two-phase flows",
ESAIM: Math. Mod. Num. Anal., vol. 39, 2005, No. 2, pp. 253-273 |
| Evje, S., Flåtten, T. | "Weakly implicit numerical schemes for a two-fluid model",
SIAM J. Sci. Comput., Vol. 26, 2005, No. 5, pp. 1449--1484 |
| Evje, S., Flåtten, T. | "Hybrid flux-splitting schemes for a common two-fluid model",
J. Comput. Phys., Vol. 192, Issue 1, 2003, pp.175-210 |
| Evje, S., Fjelde, K.K. | On a rough AUSM scheme for a one-dimensional two-phase model,
Computers and Fluids, vol. 32 (2003) 10 |
| Evje, S., Karlsen. K.H. | An error estimate for Viscous approximate soltuions of degenerate parabolic equations,
Journal of Nonlinear Mathematical Physics, vol. 9 (2002) 3, 262-281 |
| Evje, S., Fjelde, K.K. | Relaxation schemes for the calculation of two-phase flow in pipes,
Mathematical and Computer Modelling, 36 (2002), 535-567 |
| Evje, S., Fjelde, K. K. | Hybrid Flux-Splitting Schemes for a Two-Phase Model,
J. Comp. Phys., 175 (2002), 674-701 |
| Evje, S., Karlsen, K.H., Risebro, N.H. | A continuous dependence result result for nonlinear degenerate parabolic equations with spatially dependent flux function,
In H. Freistüler and G. Warnecke, editors, "Hyperbolic problems: theory, numerics, applications", Int. Series of Numerical Mathematics, Vol. 140 (2001), 337-346, Birkhäuser Verlag |
| Bürger, R., Evje, S., Karlsen, K.H., Lie, K.-A. | Numerical methods for the simulation of the settling of flocculated suspensions,
Chemical Engineering Journal. 80 (2000), 91-104. |
| Evje, S., Karlsen, K.H., Lie, K.A., Risebro, N.H. | Front tracking and operator splitting for nonlinear degenerate convection-diffusion equations,
”Parallel Solution of Partial Differential Equations”,
IMA Volumes in Mathematics and its Applications 120 (2000), 209-228 |
| Bürger, R., Evje, S., Karlsen, K.H. | On some degenerate convection-diffusion initial-boundary value problems with applications to sedimentation-consolidation processes and two-phase flow in porous media,
J. Math. Anal. Appl. 247 (2000) 2, 517-556. |
| Evje, S., Karlsen, K.H. | Monotone difference approximations of BV solutions to degenerate convection-diffusion equations,
SIAM J. Numer. Anal. Vol. 37 (2000) 6, 1838-1860. |
| Evje, S., Karlsen, K.H. | Discrete approximations of BV solutions to doubly nonlinear degenerate parabolic equations,
Numer. Math. 86 (2000) 3, 377-417. |
| Evje, S., Karlsen, K.H. | Degenerate convection-diffusion equations and implicit monotone difference schemes,
The Proc. of the Seventh Int. Conf. on Hyp. Prob., Zürich, 1998,
Int. Series of Numerical Mathematics, Vol. 129 (1999), 285-294, Birkhäuser Verlag. |
| Evje, S., Karlsen, K.H. | Viscous splitting approximation of mixed hyperbolic-parabolic convection-diffusion equations,
Numer. Math. 83 (1999) 1, 107-137. |
| Karlsen, K.H. Brusdal, K., Dahle, H.K., Evje, S., Lie, K.-A. | The corrected operator splitting approach applied to a nonlinear advection-diffusion problems,
Comput. Methods Appl. Mech. Engrg. 167 (1998), 239-260. |
Some presentations: