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Unconditionally stable Methods for HamiltonJacobi Equations
(Department of Applied Mathematics report, Research report, 200005) 
A unified multilevel framework of upscaling and domain decomposition
(Conference object, 2010)We consider multiscale preconditioners for a class of massconservative domaindecomposition (MCDD) methods. For the application of reservoir simulation, we need to solve large linear systems, arising from finitevolume ... 
An Upscaled Model for Permeable Biofilm in a Thin Channel and Tube
(Peer reviewed; Journal article, 20200121)In this paper, we derive upscaled equations for modeling biofilm growth in porous media. The resulting macroscale mathematical models consider permeable multispecies biofilm including water flow, transport, detachment and ... 
Upscaled modeling of CO2 injection and migration with coupled thermal processes
(Peer reviewed; Journal article, 2013)A practical modeling approach for CO2 storage over relatively large length and time scales is the verticalequilibrium model, which solves partially integrated conservation equations for flow in two lateral dimensions. We ... 
Upscaling of Nonisothermal Reactive Porous Media Flow under Dominant Péclet Number: The Effect of Changing Porosity
(Peer reviewed; Journal article, 2016)Motivated by rockfluid interactions occurring in a geothermal reservoir, we present a twodimensional pore scale model of a thin strip consisting of void space and grains, with fluid flow through the void space. Ions in ... 
Upscaling of the Coupling of Hydromechanical and Thermal Processes in a Quasistatic Poroelastic Medium
(Peer reviewed; Journal article, 201808)We undertake a formal derivation of a linear porothermoelastic system within the framework of quasistatic deformation. This work is based upon the wellknown derivation of the quasistatic poroelastic equations (also ... 
Upscaling, analysis, and iterative numerical solution schemes for thermoporoelasticity
(Doctoral thesis, 20190628)The main objectives of this research project is to provide part of the mathematical models and simulation technology required to assess largescale deployment of thermomechanical subsurface energy storage in the context ... 
User's guide to Express: A tool for building knowledgebased systems for statistical data analysis
(Statistical report no. 27, Research report, 199607) 
Users guide for a modesplit σcoordinate numerical Ocean model : Version 1.0
(Department of Applied Mathematics report, Research report, 200001) 
Using a σcoordinate numerical ocean model for simulating the circulation at Ormen Lange
(Department of Applied Mathematics report, Research report, 200001) 
Using sensitivities and verticalequilibrium models for parameter estimation of CO2 injection models with application to Sleipner data
(Peer reviewed; Journal article, 201707)A key part of planning CO2 storage sites is to devise a monitoring strategy with proper modelling support. Herein, we show how a simulation framework that incorporates adjointbased sensitivities can be combined with ... 
Using the bottleneck distance to compare homological methods of detecting atmospheric rivers
(Master thesis, 20180221) 
Validation of close‐kin mark–recapture (CKMR) methods for estimating population abundance
(Peer reviewed; Journal article, 2019)1. Knowing how many individuals there are in a population is a fundamental problem in the management and conservation of freshwater and marine fish. We compare abundance estimates (census size, Nc) in seven brook trout ... 
Valuation of Guaranteed Investment Contracts
(Master thesis, 2002) 
Value of different data types for estimation of permeability
(Master thesis, 20110601)The interrelation between sensitivity, nonlinearity and scale, associated with the inverse problem of identifying permeability from measurements of fluid flow, is considered. The gouverning equations for fluid flow in a ... 
Varied mechanisms and models for the varying mitochondrial bottleneck
(Peer reviewed; Journal article, 20191120)Mitochondrial DNA (mtDNA) molecules exist in populations within cells, and may carry mutations. Different cells within an organism, and organisms within a family, may have different proportions of mutant mtDNA in these ... 
Vascular responses to radiotherapy and androgendeprivation therapy in experimental prostate cancer
(Peer reviewed; Journal article, 20120523)Background: Radiotherapy (RT) and androgendeprivation therapy (ADT) are standard treatments for advanced prostate cancer (PC). Tumor vascularization is recognized as an important physiological feature likely to impact on ... 
Verifisering av ein tredimensjonal bølgemodell ved hjelp av eksperimentelle data
(Master thesis, 2001) 
Vertical Equilibrium Flow Models with Fully Coupled Geomechanics for CO2 Storage Modeling, Using Precomputed Mechanical Response Functions
(Peer reviewed; Journal article, 2017)Vertical equilibrium (VE) models have proved to be attractive for simulation of \co storage scenarios. Their primary advantage is a substantial reduction in computational requirements compared to standard 3D simulation ... 
Vertical equilibrium models for coupled flow and transport problems
(Master thesis, 20171220)A better understanding of viscous fingering can help to increase the recovery of hydrocarbons. The need for modelling the impact of viscous fingering is great as it largely dictates the sweep quality of hydrocarbons in a ...