Blar i SINTEF Energi på forfatter "Aasen, Ailo"
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Accurate quantum-corrected cubic equations of state for helium, neon, hydrogen, deuterium and their mixtures
Aasen, Ailo; Hammer, Morten; Lasala, Silvia; Jaubert, Jean-Noël; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2020)Cubic equations of state have thus far yielded poor predictions of the thermodynamic properties of quantum fluids such as hydrogen, helium and deuterium at low temperatures. Furthermore, the shape of the optimal α functions ... -
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) -
Choked liquid flow in nozzles: crossover from heterogeneous to homogeneous cavitation and insensitivity to depressurization rate
Wilhelmsen, Øivind; Aasen, Ailo (Journal article; Peer reviewed, 2021)The critical mass flow rate is the maximum flow rate that can pass through a constrained geometry such as a nozzle. For liquid CO2, it has been shown that homogeneous relaxation models systematically underpredict the ... -
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) -
Equation of state and force fields for Feynman-Hibbs-corrected Mie fluids. II. Application to mixtures of helium, neon, hydrogen and deuterium
Aasen, Ailo; Hammer, Morten; Müller, Erich; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2020)We extend the statistical associating fluid theory of quantum corrected Mie potentials (SAFT-VRQ Mie), previously developed for pure fluids [Aasen et al., J. Chem. Phys. 151, 064508 (2019)], to fluid mixtures. In this ... -
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 ... -
Estimating metastable thermodynamic properties by isochoric extrapolation from stable states
Aasen, Ailo; Hammer, Morten; Reguera, David; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2024)The description of metastable fluids, those in local but not global equilibrium, remains an important problem of thermodynamics, and it is crucial for many industrial applications and all first order phase transitions. One ... -
Heat-driven snow production applying ejector and natural refrigerant
Aasen, Ailo; Gabrielii, Cecilia H; Moen, Ole Marius (Science et technique du froid;, Chapter; Peer reviewed, 2022)An effect of climate change is fewer cold days and less natural snow at lower elevations. This has spurred the interest in temperature independent snow (TIS) production, i.e., refrigeration technologies that can produce ... -
Ice formation and growth in supercooled water–alcohol mixtures: Theory and experiments with dual fiber sensors
Wahl, Markus Solberg; Aasen, Ailo; Hjelme, Dag Roar; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2020)Increased knowledge on fluid-solid phase transitions is needed, both when they are undesired and can impair processes operation, and when strict control is required in fields such as food technology, the pharmaceutical ... -
Offshore power generation with carbon capture and storage to decarbonise mainland electricity and offshore oil and gas installations: A techno-economic analysis
Roussanaly, Simon; Aasen, Ailo; Anantharaman, Rahul; Danielsen, B.; Jakobsen, Jana Poplsteinova; Heme-De-Lacotte, L.; Neji, G.; Sødal, A.; Wahl, Per Eilif; Vrana, Til Kristian; Dreux, R. (Journal article; Peer reviewed, 2018)his study investigates the techno-economic potential of offshore power generation from natural gas with carbon capture and storage to reduce the climate impact of mainland electricity and the offshore oil and gas industry. ... -
Reducing the exergy destruction in the cryogenic heat exchangers of hydrogen liquefaction processes
Wilhelmsen, Øivind; Berstad, David Olsson; Aasen, Ailo; Nekså, Petter; Skaugen, Geir (Journal article; Peer reviewed, 2018) -
Techno-economic evaluation of CO2 transport from a lignite-fired IGCC plant in the Czech Republic
Roussanaly, Simon; Skaugen, Geir; Aasen, Ailo; Jakobsen, Jana Poplsteinova; Vesely, Ladislav (Journal article; Peer reviewed, 2017) -
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) -
Thermodynamic properties of the 3D Lennard-Jones/spline model
Hafskjold, Bjørn; Travis, Karl; Bailey, Amanda H.; Hammer, Morten; Aasen, Ailo; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2019)In the Lennard-Jones spline (LJ/s) model, the Lennard-Jones (LJ) potential is truncated and splined so that both the pair potential and the force continuously approach zero at rc 1:74 . It exhibits the same structural ... -
Tolman lengths and rigidity constants of multicomponent fluids: Fundamental theory and numerical examples
Aasen, Ailo; Blokhuis, Edgar M.; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2018) -
Understanding the physical phenomena that occur inside heat exchanger for liquefaction of hydrogen
Wilhelmsen, Øivind; Skaugen, Geir; Berstad, David Olsson; Aasen, Ailo; Nekså, Petter (9782362150227;2017-3, Chapter; Peer reviewed, 2017)