Helge K. Dahle

E-mailhelge.dahle@uib.no
Phone+47 55 58 48 56
Visitor Address
Realfagbygget, Allegaten 41, 4 etg. sør

Bergen

Room
4A13d
Postal Address
Postboks 7803

5020 Bergen

Research
Publications

My main field of work has been related to mathematical and numerical modeling of flow and transport in porous media. In my research work. I have been interested in up-scaling from pore- to continuum scale and further to field scale. A particular topic of interest has been Lagrangian-type methods for advection-dominated (hyperbolic) transport. I have also been interested in pore-scale modeling. More recently, I have worked on modeling of geological storage of CO2. A main challenge has been to derive efficient numerical methods to predict the distribution and migration of a CO2-plume under different storage scenarios. Important questions are to derive and identify as physically simple models as possible, and still capture the main features of the processes.

Academic article

Show author(s) (2013). Upscaled modeling of CO2 injection with coupled thermal processes. Energy Procedia. 384-391.
Show author(s) (2013). Influence of capillary pressure and trapping hysteresis on large-scale CO2 migration. Journal of Coupled Systems and Multiscale Dynamics. 442-458.
Show author(s) (2013). Impact of structural heterogeneity on upscaled models for large-scale CO2 migration and trapping in saline aquifers. Advances in Water Resources. 520-532.

Show author(s) (2012). Uncertainties in practical simulation of CO2 storage. International Journal of Greenhouse Gas Control. 234-242.
Show author(s) (2012). Effective models for CO2 migration in geological systems with varying topography. Water Resources Research. 17 pages.
Show author(s) (2012). Derivation of vertical equilibrium models for CO2 migration from pore scale equations. International Journal of Numerical Analysis & Modeling. 745-776.

Show author(s) (2011). SUCCESS: SUbsurface CO2 storage–Critical elements and superior strategy. Energy Procedia. 6117-6124.
Show author(s) (2011). Impact of the capillary fringe in vertically integrated models for CO2 storage. Water Resources Research.
Show author(s) (2011). Field-case simulation of CO2-plume migration using vertical-equilibrium models. Energy Procedia. 3801-3808.
Show author(s) (2011). BARYCENTRIC COORDINATE BASED MIXED FINITE ELEMENTS ON QUADRILATERAL/HEXAHEDRAL MESH. International Journal of Numerical Analysis & Modeling. 584-598.

Show author(s) (2010). Non-equilibrium effects in capillarity and interfacial area in two-phase flow: dynamic pore-network modelling. Journal of Fluid Mechanics. 38-71.

Show author(s) (2009). Preface. Computational Geosciences. 405-407.
Show author(s) (2009). Geological modeling and simulation of CO2 injection in the Johansen formation. Computational Geosciences. 435-450.
Show author(s) (2009). Discontinuous Galerkin methods for advective transport in single-continuum models of fractured media. Advances in Water Resources. 493-506.
Show author(s) (2009). Comparison of cell- and vertex-centered discretization methods for flow in a two-dimensional discrete-fracture–matrix system. Advances in Water Resources. 1740-1755.
Show author(s) (2009). A benchmark study on problems related to CO2 storage in geologic formations. Summary and discussion of the results. Computational Geosciences. 409-434.

Show author(s) (2008). On the definition of macroscale pressure for multiphase flow in porous media. Water Resources Research. 8 pages.

Show author(s) (2007). Interpretation of macroscale variables in Darcy's law. Water Resources Research. 9 pages.
Show author(s) (2007). Improved streamlines and time-of-flight for streamline simulation on irregular grids. Advances in Water Resources. 1027-1045.

Show author(s) (2006). Control Volume Finite Difference On Adaptive Meshes. Lecture Notes in Computational Science and Engineering.

Show author(s) (2005). Semi-Analytical Solution for CO2 Leakage through an Abandoned Well. Environmental Science and Technology. 602-611.
Show author(s) (2005). Bundle-of-tubes model for calculating dynamic effects in the capillary-pressure-saturation relationship. Transport in Porous Media. 5-22.

Show author(s) (2004). Performance of a flux splitting scheme when solving the single-phase pressure equation discretized by MPFA. Computational Geosciences. 325-340.

Show author(s) (2003). A pore network model for calculation of interfacial velocities. Advances in Water Resources. 1061-1074.

Show author(s) (2002). Time-of-flight + fast Marching + transport collapse: an alternative to streamlines for tow-phase porous media flow with capillary forces? Developments in Water Science. 995-1002.
Show author(s) (2002). A streamline front tracking method for two- and three-phase flow including capillary forces. Contemporary Mathematics. 49-61.

Show author(s) (2001). Operator splitting methods for systems of convection-diffusion equations: nonlinear error mechanisms and correction strategies. Journal of Computational Physics. 636-663.
Show author(s) (2001). Dynamic effect in the capillary pressure-saturation relationship and its impacts on unsaturated flow. http://www.vadosezonejournal.org/cgi/content/.
Show author(s) (2001). Corrected operator splitting for systems of convection-diffusion equations. MANGLER.

Show author(s) (1999). An ELLAM Scheme for advection-diffusion equations in two dimensions. SIAM Journal on Scientific Computing. 2160-2194.
Show author(s) (1999). An ELLAM Scheme for Advection-Diffusion Equations in Two Dimensions. SIAM Journal on Scientific Computing. 2160-2194.
Show author(s) (1999). A dynamic network model for two-phase immiscible flow. Computational Geosciences. 1-22.

Show author(s) (1998). The corrected operator splitting approach applied to a nonlinear advection-diffusion problem. Computer Methods in Applied Mechanics and Engineering. 239-260.
Show author(s) (1998). An ELLAM scheme for advection-dispersion equations in two dimensions. SIAM Journal on Scientific Computing.
Show author(s) (1998). A study of the modelling error in two operator splitting algorithms f or porous media flow. Computational Geosciences. 23-26.

Show author(s) (1997). The shortening fraction of myocardial fibers and its layered distribution, as derived from cine-MR imaged left ventriculograms - An approach for evaluating globar left ventricular function. Acta Radiologica. 391-399.
Show author(s) (1997). The corrected operator splitting approach to a nonlinear advection-diffusion problem. Applied Mathematics Report.

Show author(s) (1996). Eulerian-Lagrangian localized adjoint methods for systems of nonlinear advective-diffusive-reactive equations. Advances in Water Resources. 297-315.

Show author(s) (1995). Eulerian-Lagrangian localized adjoint methods for a nonlinear advection-diffusion equation. Computer Methods in Applied Mechanics and Engineering. 223-250.

Report

Show author(s) (2006). Proceedings of the XVI International Conference on Computational Methods in Water Resources. .

Show author(s) (2003). Bundle-of-Tubes Model for Calculating Dynamic Effects in the Capillary-Pressure-Saturation relationship. .

Show author(s) (1997). A study of the modelling error in two operator splitting algorithms for porous media flow. 112. 112. .

Show author(s) (1995). ELLAM-based operator splitting for nonlinear advection diffusion equations. 98. 98. .

Show author(s) (1988). Adaptive characteristic operator splitting techniques for convectiondominated diffusion problems in one and two space dimensions. 85. 85. .

Lecture

Show author(s) (2014). Vertically integrated models with coupled thermal processes.

Show author(s) (2012). Kan CO2-lagring på lange tidsskalaer modelleres?

Popular scientific lecture

Show author(s) (1998). An Algorithm for Simulating Dynamic Effects in a Pore Scale Network Model of Two Phase Flow.

Academic lecture

Show author(s) (2013). Upscaled modeling of CO2 injection with coupled thermal processes.
Show author(s) (2013). Quantifying storage capacity using upscaled models for CO2 storage.
Show author(s) (2013). Coupled Thermal Models with Vertical Equilibrium for CO2 storage.

Show author(s) (2012). Upscaled models for CO2 migration in geological formations with structural heterogeneity.
Show author(s) (2012). Upscaled models for CO2 migration.
Show author(s) (2012). Effective models for CO2 migration in geological systems with varying topography.

Show author(s) (2006). Streamline methods on fault adapted grids for risk assessment of storage of CO2 in geological formations.
Show author(s) (2006). On the definition of macro-scale pressure for multi-phase flow in porous media.
Show author(s) (2006). Adaptive streamline tracing for streamline simulation on irregular grids.
Show author(s) (2006). Adaptive Streamline Tracing for Streamline Simulation on Irregular Grids.
Show author(s) (2006). A Discontinuous Galerkin Method for Computing Time-of-Flight in Discrete-Fracture Models.

Show author(s) (2004). Quantitative estimation of CO2 leakage from geological storage: Analytical models, numerical models, and data needs.
Show author(s) (2004). Dynamic Effects in Constitutive Relationships for Two-Phase Flow in Porous Media: Insights From and About Bundle of Tubes Models.
Show author(s) (2004). Dynamic Effects in Capillary Pressure Relationships for Two-phase Flow in Porous Media: Insights from Bundle-of-Tubes Models and their Implications.
Show author(s) (2004). Adjoint methods are particle methods: Implications for Eulerian-Langrangian modeling of multiphase multicomponent transport.
Show author(s) (2004). A pore-scale network approach to investifate dynamic effects in multiphase flow.

Show author(s) (2003). Eulerian-Lagrangian methods for non-linear advection problems.
Show author(s) (2003). A Bundle of Capillary Tubes Model to Investigate Dynamic Effects in the Capillary-Pressure-Saturation Relationship.

Show author(s) (2002). Time-of-flight+transport collapse: An alternative to streamlines for two-phase porous media flow with capillary forces.
Show author(s) (2002). Study of Pc-Sw relationship using a dynamic pore-scale network model.
Show author(s) (2002). A total pressure-saturation formulation of two-phase flow incorperating dynamic effects in the capillary-pressure-saturation relationship.
Show author(s) (2002). A streamline front-tracking method for two- and three-phase flow including capillary forces.

Show author(s) (2000). Two phase flow including interfacial area as a variable.
Show author(s) (2000). Dynamic pore-scale network models for two-phase flow in porous media.
Show author(s) (2000). A local streamline Eulerian-Lagrangian method for two-phase flow.
Show author(s) (2000). A Two Phase Flow Model Including Dynamics of Interfacial Area.
Show author(s) (2000). A Sketch: Solving a Multidimensional Three Phase Flow Problem.

Show author(s) (1998). On the use of pore-scale computational models for two-phase porous media flows.

Show author(s) (1997). Numerisk modellering av strømning i grunnvannsreservoar.
Show author(s) (1997). Identification of the discontinuios permability of a one phase flow reservoir by Petrov-Galerkin method.
Show author(s) (1997). Corrected operator splitting for nonlinear advection-diffusion.
Show author(s) (1997). Combining the corrected operator splitting method with streamline computation to solve nonlinear advection-diffusion equations.
Show author(s) (1997). A dynamic algorithm for simulating two-phase flow in a pore-scale network model.
Show author(s) (1997). A characteristic domain splitting method.

Show author(s) (1996). A characteristic domain splitting method.
Show author(s) (1996). A characteristic domain decomposition method for modeling flow in a coastal aquifer.

Editorial

Show author(s) (2016). Foreword: NUPUS: Porous Media Research Has Got a Brand Name. Transport in Porous Media. 235-236.

Reader opinion piece

Show author(s) (2012). Magne Espedal Memorial Issue. International Journal of Numerical Analysis & Modeling. I-II.

Thesis at a second degree level

Show author(s) (1985). Trykkeffektar på tearingmoden: Ein kollisjonsdominert to-væske modell.

Masters thesis

Show author(s) (2010). On the use of vertically averaged models to simulate CO2 migration in a layered saline aquifer.
Show author(s) (2010). Modeling dissolution within vertically averaged formulations.