Browsing SINTEF Open by Author "Ervik, Åsmund"
Now showing items 1-20 of 20
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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, ... -
Choice of reference, influence of non-additivity and present challenges in thermodynamic perturbation theory for mixtures
Hammer, Morten; Aasen, Ailo; Ervik, Åsmund; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2020) -
A combined fluid-dynamic and thermodynamic model to predict the onset of rapid phase transitions in LNG spills
Lervåg, Karl Yngve; Skarsvåg, Hans Langva; Aursand, Eskil; Ouassou, Jabir Ali; Hammer, Morten; Reigstad, Gunhild Allard; Ervik, Åsmund; Fyhn, Eirik Holm; Gjennestad, Magnus Aashammer; Aursand, Peder; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2020)Transport of liquefied natural gas (LNG) by ship occurs globally on a massive scale. The large temperature difference between LNG and water means LNG will boil violently if spilled onto water. This may cause a physical ... -
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, ... -
Condensation heat transfer of CO2 on Cu based hierarchical and nanostructured surfaces
Snustad, Ingrid; Hollund, Lene; Ervik, Åsmund; Austegard, Anders; Brunsvold, Amy; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2021)Phase-change processes such as condensation are efficient means of heat transfer. However, condensation is also an energy-intensive process and extensive research is conducted to increase the heat transfer efficiency. ... -
Contact Angle and Condensation of a CO2 Droplet on a Solid Surface
Wu, Jianyang; Ervik, Åsmund; Snustad, Ingrid; Xiao, Senbo; Brunsvold, Amy; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2019)Anthropogenic release of carbon dioxide (CO2) is a major contribution to manmade increase in global warming. Carbon capture and storage (CCS) is a necessary technology for lowering CO2 emissions to an acceptable level that ... -
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 ... -
Coupled fluid-solid modelling of the valve dynamics in reciprocating compressors
Ervik, Åsmund; Saai, Afaf; Berstad, Torodd; Meyer, Ole; Tsuji, Takuma; Oku, Tatsuya; Hattori, Kazuhiro; Yamada, Kazuya; Delhaye, Virgile Roger; Nekså, Petter (Science et technique du froid;, Chapter; Peer reviewed, 2022)A novel method coupling computational fluid dynamics (CFD) and finite element method (FEM) was developed to account for the complex physics of the reciprocating compressor. The developed method is based on data exchange ... -
A detailed review on CO2 two-phase ejector flow modeling
Ringstad, Knut Emil; Allouche, Yosr; Gullo, Paride; Ervik, Åsmund; Banasiak, Krzysztof; Hafner, Armin (Peer reviewed; Journal article, 2020)Ejector-equipped vapor-compression systems for refrigeration and cooling, relying solely on (R744) as a natural working fluid, are perceived to be an eco-friendly and highly efficient solution for many applications. However, ... -
Dynamic Simulation of CO2 Injection Wells
Munkejord, Svend Tollak; Hammer, Morten; Ervik, Åsmund; Lund, Halvor; Skarsvåg, Hans Langva; Odsæter, Lars Hov (Journal article, 2019) -
Efficient Liquefaction of Carbon Dioxide on Superlyophobic Surfaces
Snustad, Ingrid; Ervik, Åsmund; Austegard, Anders; Reigstad, Gunhild Allard; He, Jianying; Zhang, Zhiliang; Brunsvold, Amy (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) -
Equation of state and force fields for Feynman–Hibbs-corrected Mie fluids. I.Application to pure helium, neon, hydrogen, and deuterium
Aasen, Ailo; Hammer, Morten; Ervik, Åsmund; Müller, Erich A.; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2019)We present a perturbation theory that combines the use of a third-order Barker–Henderson expansion of the Helmholtz energy with Miepotentials that include first- (Mie-FH1) and second-order (Mie-FH2) Feynman–Hibbs quantum ... -
A guide to computing interfacial properties of fluids from molecular simulations
Müller, Erich A.; Ervik, Åsmund; Mejìa, Andrès (Peer reviewed; Journal article, 2021)Molecular simulation is ideally suited to explore and describe the behavior of inhomogeneous fluid mixtures as it allows a unique perspective into the physics at the scale relevant to interfacial properties, filling the ... -
Heat transfer characteristics of CO2 condensation on common heat exchanger materials, method development and experimental results
Snustad, Ingrid; Ervik, Åsmund; Austegard, Anders; Brunsvold, Amy; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2021)Understanding condensation of CO2 is essential for e.g designing compact heat exchangers or processes involved in Carbon Capture and Storage. However, a consistent experimental campaign for condensation of CO2 on common ... -
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 ... -
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 ... -
A multiscale porous–resolved methodology for efficient simulation of heat and fluid transport in complex geometries, with application to electric power transformers
Meyer, Ole; Lervåg, Karl Yngve; Ervik, Åsmund (Peer reviewed; Journal article, 2020)The numerical simulation of fluid flow through a complex geometry with heat transfer is of strong interest for many applications, such as oil-filled power transformers. A fundamental challenge here is that high resolution ... -
Prediction of the water/oil interfacial tension from molecular simulations using the coarse-grained SAFT-γ Mie force field
Herdes, Carmelo; Ervik, Åsmund; Mejìa, Andrès; Müller, Erich A. (Journal article; Peer reviewed, 2017)This work is framed within the Ninth Industrial Fluid Properties Simulation Challenge, with the aim of assessing the capability of molecular simulation methods and force fields to accurately predict the interfacial tension ... -
Thermo-Fluid-Dynamical Modelling of Salt Precipitation During Co2 Injection in Saline Aquifers, and the Effect on Injectivity
Ervik, Åsmund; Lund, Halvor; Hammer, Morten; Aasen, Ailo; Matas, Berta Güell (Journal article, 2019)