Browsing SINTEF Open by Author "Munkejord, Svend Tollak"
Now showing items 1-20 of 40
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A fracture-propagation-control model for pipelines transporting CO2-rich mixtures including a new method for material-model calibration
Nordhagen, Håkon Ottar; Munkejord, Svend Tollak; Hammer, Morten; Gruben, Gaute; Fourmeau, Marion; Dumoulin, Stephane (Journal article; Peer reviewed, 2017)This work considers a predictive numerical modelling approach for fracture-propagation control in CO2-transport pipelines, an area where current engineering tools do not work. Fluid-structure interaction model simulations ... -
A robust method for calculating interface curvature and normal vectors using an extracted local level set
Ervik, Åsmund; Lervåg, Karl Yngve; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2014)The level-set method is a popular interface tracking method in two-phase flow simulations. An often-cited reason for using it is that the method naturally handles topological changes in the interface, e.g. merging drops, ... -
An experimental method for studying the discrete droplet impact phenomena in a flammable gas environment
Zhao, He; Brunsvold, Amy; Munkejord, Svend Tollak; Mølnvik, Mona J. (Journal article; Peer reviewed, 2010) -
BIGCCS Innovations – Measures to Accelerate CCS Deployment
Mølnvik, Mona J.; Aarlien, Rune; Henriksen, Partow Pakdel; Munkejord, Svend Tollak; Tangen, Grethe; Jakobsen, Jana Poplsteinova (Peer reviewed; Journal article, 2016)After six years in operation, BIGCCS International Research Centre is in its final phase, and results are being produced at high speed. The ultimate goal for the BIGCCS centre is to contribute to the acceleration of ... -
Calculation of the interface curvature and normal vector with the level-set method
Lervåg, Karl Yngve; Müller, Bernhard; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2013) -
Calibration of Pipeline Steel Model for Computational Running Ductile Fracture Assessment
Gruben, Gaute; Dumoulin, Stephane; Nordhagen, Håkon Ottar; Hammer, Morten; Munkejord, Svend Tollak (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;29, Chapter; Peer reviewed, 2019)A novel fracture calibration method is presented for material models applied in finite element analysis of pipeline steels exposed to running ductile fracture. The calibration is based on the drop-weight tear test which ... -
CO2 pipeline integrity: A coupled fluid-structure model using a reference equation of state for CO2
Aursand, Eskil; Aursand, Peder; Berstad, Torodd; Dørum, Cato; Hammer, Morten; Munkejord, Svend Tollak; Nordhagen, Håkon Ottar (Peer reviewed; Journal article, 2013)We present a coupled fluid-structure model to study crack propagation and crack arrest in pipelines. Numerical calculations of crack arrest, crack velocity and pressure profiles have been performed for steel pipes with an ... -
CO2 pipeline integrity: A new evaluation methodology
Berstad, Torodd; Dørum, Cato; Jakobsen, Jana Poplsteinova; Kragset, Steinar; Li, Hailong; Lund, Halvor; Morin, Alexandre; Munkejord, Svend Tollak; Mølnvik, Mona Jacobsen; Nordhagen, Håkon Ottar; Østby, Erling (Peer reviewed; Journal article, 2011)A coupled fluid-structure model for pipeline integrity simulations has been developed. The pipe material and fracture propagation have been modelled using the finite-element method with a local fracture criterion. The ... -
CO2 Pipeline Integrity: Comparison of a Coupled Fluid-structure Model and Uncoupled Two-curve Methods
Aursand, Eskil; Dørum, Cato; Hammer, Morten; Morin, Alexandre; Munkejord, Svend Tollak; Nordhagen, Håkon Ottar (Peer reviewed; Journal article, 2014)One challenge in CCS is related to the prevention of running-ductile fracture in CO2-carrying pipelines. Commonly used tools for ensuring crack arrest in pipelines hinge mainly on semi-empirical models, which may not be ... -
Combining thermodynamic and fluid flow modelling for CO2 flow assurance
Munkejord, Svend Tollak; Bernstone, Christian; Clausen, Sigmund; de Koeijer, Gelein; Mølnvik, Mona J. (Journal article; Peer reviewed, 2013)The present paper concerns the importance of a combined modelling and experimental effort to develop physicsbased combined thermodynamic and transient flow models for CO2-transport pipelines. Such models need to handle ... -
Computation of three-dimensional three-phase flow of carbon dioxide using a high-order WENO scheme
Gjennestad, Magnus Aashammer; Gruber, Andrea; Lervåg, Karl Yngve; Johansen, Øyvind; Ervik, Åsmund; Hammer, Morten; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2017)We have developed a high-order numerical method for the 3D simulation of viscous and inviscid multiphase flow described by a homogeneous equilibrium model and a general equation of state. Here we focus on single-phase, ... -
Coupled CO2-well-reservoir simulation using a partitioned approach: effect of reservoir properties on well dynamics
Munkejord, Svend Tollak; Hammer, Morten; Ervik, Åsmund; Odsæter, Lars Hov; Lund, Halvor (Peer reviewed; Journal article, 2020)We present a model framework for dynamic simulation of the flow of (Formula presented.) and other components in an injection well coupled with a near-well reservoir. With a partitioned approach, we employ numerical methods ... -
Depressurization of carbon dioxide in pipelines- Models and methods
Lund, Halvor; Flåtten, Tore; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2011)A model for two-phase carbon dioxide transport with phase transfer in pipelines is presented. The stiffened-gas equation of state is used for calculating thermodynamical properties. The convergence and accuracy of two ... -
Depressurization of CO2 in a pipe: Effect of initial state on non-equilibrium two-phase flow
Log, Alexandra Metallinou; Hammer, Morten; Deng, Han; Austegard, Anders; Hafner, Armin; Munkejord, Svend Tollak (Peer reviewed; Journal article, 2023)It is key in several industrial applications to accurately describe rapid depressurization of liquid and dense phase states. Examples include refrigeration systems, nuclear reactor cooling and capture and storage (CCS). ... -
Depressurization of CO2 in a pipe:High-resolution pressure and temperature data and comparison with model predictions
Munkejord, Svend Tollak; Austegard, Anders; Deng, Han; Hammer, Morten; Stang, Hans Georg Jacob; Løvseth, Sigurd Weidemann (Peer reviewed; Journal article, 2020)The design of safe and cost-efficient CO2-transportation systems is an integral part of CO2 capture and storage (CCS) deployment. To achieve this, accurate transient flow models capturing the occurrence of gas, liquid and ... -
Depressurization of CO2 – a Numerical Benchmark Study
Clausen, Sigmund; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2012)A numerical benchmark study has been performed, comparing results from the OLGA pipeline simulator to data obtained using the multi-stage (MUSTA) centred scheme. The case considered is a depressurization of a pipeline. ... -
Depressurization of CO2-N2 and CO2-He in a pipe: Experiments and modelling of pressure and temperature dynamics
Munkejord, Svend Tollak; Deng, Han; Austegard, Anders; Hammer, Morten; Aasen, Ailo; Skarsvåg, Hans Langva (Peer reviewed; Journal article, 2021) -
Depressurization of CO2-rich mixtures in pipes: Two-phase flow modelling and comparison with experiments
Munkejord, Svend Tollak; Hammer, Morten (Journal article; Peer reviewed, 2015)We present and discuss two-phase flow models to simulate transient flow of CO2-rich mixtures in pipes, which is of relevance for design, operation and safety. The model predictions are compared to data from five depressurization ... -
Dynamic Simulation of CO2 Injection Wells
Munkejord, Svend Tollak; Hammer, Morten; Ervik, Åsmund; Lund, Halvor; Skarsvåg, Hans Langva; Odsæter, Lars Hov (Journal article, 2019) -
Electrocoalescence III : staus and summary report from activities
Lundgaard, Lars Esben; Munkejord, Svend Tollak; Reboud, Jean-Luc; Lesaint, Cedric Michel; Ervik, Åsmund; Ese, Marit-Helen Glomm (SINTEF Energi. Rapport;, Research report, 2016)