Blar i SINTEF Open på forfatter "Munkejord, Svend Tollak"
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Experiments and modelling of choked flow of CO2 in orifices and nozzles
Hammer, Morten; Deng, Han; Austegard, Anders; Log, Alexandra Metallinou; Munkejord, Svend Tollak (Peer reviewed; Journal article, 2022)In order to accelerate the deployment of capture and storage (CCS), engineers need experimentally validated models, among other things, to predict the mass flow rate in process equipment and flow restrictions like valves, ... -
Experiments and modelling of two-phase transient flow during pipeline depressurization of CO2 with various N2 compositions
Drescher, Michael; Varholm, Kristoffer; Munkejord, Svend Tollak; Hammer, Morten; Held, Rudolf; De Koeijer, Gelein (Journal article; Peer reviewed, 2014)Pressure-release experiments of CO2 with impurity contents of 10, 20 and 30 mol% nitrogen have been executed. The experimental investigations were performed in a 140 m long horizontal tube with an inner diameter of 10 mm. ... -
An exponential time-differencing method for monotonic relaxation systems
Aursand, Peder; Evje, Steinar; Flåtten, Tore; Teigen, Knut Erik; Munkejord, Svend Tollak (Peer reviewed; Journal article, 2014)We present first and second-order accurate exponential time differencing methods for a special class of stiff ODEs, denoted as monotonic relaxation ODEs. Some desirable accuracy and robustness properties of our methods are ... -
A flashing flow model for the rapid depressurization of CO2 in a pipe accounting for bubble nucleation and growth
Log, Alexandra Metallinou; Hammer, Morten; Munkejord, Svend Tollak (Peer reviewed; Journal article, 2023)Flashing flow is encountered in many industrial systems involving nozzles, valves and decompression of vessels and pipes. In the context of CO2 capture and storage (CCS), the design of safe and efficient CO2 transportation ... -
Fracture propagation control in CO2 pipelines: Validation of a coupled fluid-structure model
Aursand, Eskil; Dumoulin, Stephane; Hammer, Morten; Lange, Hans Iver; Morin, Alexandre; Munkejord, Svend Tollak; Nordhagen, Håkon Ottar (Journal article; Peer reviewed, 2016)Existing engineering methods to ensure fracture propagation control in natural-gas transmission pipelines have been shown to be non-applicable when dense-phase CO2 is transported. To overcome this, a coupled fluid-structure ... -
HLLC-type methods for compressible two-phase flow in ducts with discontinuous area changes
Log, Alexandra Metallinou; Munkejord, Svend Tollak; Hammer, Morten (Peer reviewed; Journal article, 2021)In this work, the Harten-Lax-van Leer Contact (HLLC) approximate Riemann solver is extended to two-phase flow through ducts with discontinuous cross-sections. Two main strategies are explored regarding the treatment of the ... -
Influence of surfactants on the electrohydrodynamic stretching of water drops in oil
Ervik, Åsmund; Penne, Torstein Eidsnes; Hellesø, Svein Magne; Munkejord, Svend Tollak; Müller, Bernhard (Journal article; Peer reviewed, 2017)In this paper we present experimental and numerical studies of the electrohydrodynamic stretching of a sub-millimetre-sized salt water drop, immersed in oil with added non-ionic surfactant, and subjected to a suddenly ... -
Innovation in a heterogeneous CCS research centre, managerial and organizational challenges
Aasen, Tone Merethe; Mølnvik, Mona J.; Aarlien, Rune; Bredesen, Rune; Munkejord, Svend Tollak; Brunsvold, Amy; Gundersen, Truls (Peer reviewed; Journal article, 2012)Recently, the Norwegian authorities have established a number of Centres for Environment-friendly Energy Research (CEER), intended to develop new knowledge, foster breakthrough technology and promote innovation in order ... -
Method using a density-energy state function with a reference equation of state for fluid-dynamics simulation of vapor-liquid-solid carbon dioxide
Hammer, Morten; Ervik, Åsmund; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2013)With the advent of CO2 capture and storage (CCS) as an important remedy for reducing atmospheric CO2 emissions, it has become necessary to develop accurate and efficient simulation tools. Among other things, such tools ... -
On the effect of temperature and velocity relaxation in two-phase flow models
Martinez Ferrer, Pedro José; Flåtten, Tore; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2012)We study a two-phase pipe flow model with relaxation terms in the momentum and energy equations, driving the model towards dynamic and thermal equilibrium. These equilibrium states are characterized by the velocities and ... -
Perspective on the hydrogen economy as a pathway to reach net-zero CO2 emissions in Europe
van der Spek, Mijndert; Banet, Catherine; Bauer, Christian; Gabrielli, Paolo; Goldthorpe, Ward; Mazzotti, Marco; Munkejord, Svend Tollak; Røkke, Nils Anders; Shah, Nilay; Sunny, Nixon; Sutter, Daniel; Trusler, J.P. Martin; Gazzani, Matteo (Peer reviewed; Journal article, 2022)The envisioned role of hydrogen in the energy transition – or the concept of hydrogen economy – has varied through the years. While in the past hydrogen was mainly considered a clean fuel for cars and/or for electricity ... -
Profiting from CCS innovations: A study to measure potential value creation from CCS research and development
Størset, Sigmund Østtveit; Tangen, Grethe; Berstad, David Olsson; Eliasson, Peder; Hoff, Karl Anders; Langørgen, Øyvind; Munkejord, Svend Tollak; Roussanaly, Simon; Torsæter, Malin (Journal article; Peer reviewed, 2019)Globally, large private and public funds are invested into CO2 capture and storage (CCS) research to provide the knowledge and technology required to mitigate CO2 emissions below a sustainable level. A pertinent question ... -
Profiting from CCS innovations: A study to measure potential value creation from CCS research and development
Størset, Sigmund Østtveit; Tangen, Grethe; Berstad, David Olsson; Eliasson, Peder; Hoff, Karl Anders; Langørgen, Øyvind; Munkejord, Svend Tollak; Roussanaly, Simon; Torsæter, Malin (Journal article; Peer reviewed, 2019)Globally, large private and public funds are invested into CO2 capture and storage (CCS) research to provide the knowledge and technology required to mitigate CO2 emissions below a sustainable level. A pertinent question ... -
Sharp interface simulations of surfactant-covered drops in electric fields
Teigen, Knut Erik; Lervåg, Karl Yngve; Munkejord, Svend Tollak (Chapter; Peer reviewed, 2010) -
Solution of the Span–Wagner Equation of State Using a Density–Energy State Function for Fluid-Dynamic Simulation of Carbon Dioxide
Teigen, Knut Erik; Munkejord, Svend Tollak; Skaugen, Geir (Journal article; Peer reviewed, 2012)With the introduction of carbon capture and storage (CCS) as a means to reduce carbon emissions, a need has arisen for accurate and efficient simulation tools. In this work, we propose a method for dynamic simulations of ... -
The Norwegian CCS Research Centre: Industry-Driven Innovation for Fast-Track Ccs Deployment
Brunsvold, Amy; Tangen, Grethe; Munkejord, Svend Tollak; Mølnvik, Mona J.; Henriksen, Partow Pakdel (Journal article, 2019) -
Thermo- and fluid-dynamical modelling of two-phase multi-component carbon dioxide mixtures
Munkejord, Svend Tollak; Jakobsen, Jana Poplsteinova; Austegard, Anders; Mølnvik, Mona J. (Journal article; Peer reviewed, 2010) -
Upward and downward two-phase flow of in a pipe: Comparison between experimental data and model predictions
Hammer, Morten; Deng, Han; Liu, Lan; Langsholt, Morten Chr.; Munkejord, Svend Tollak (Peer reviewed; Journal article, 2021)In order to deploy capture and storage (CCS) systems to mitigate climate change, it is crucial to develop reliable models for design and operational considerations. A key element of the system is the interface between ... -
Well integrity for CO2 injection from ships: Simulation of the effect of flow and material parameters on thermal stresses
Aursand, Peder; Hammer, Morten; Lavrov, Alexandre; Lund, Halvor; Munkejord, Svend Tollak; Torsæter, Malin (Journal article; Peer reviewed, 2017)Ships have been shown to be the most cost-effective way to transport CO2 from many sources in the Nordic region to offshore storage sites. Injection from ships introduces new challenges for the integrity of CO2 injection ...