Browsing Institutt for kjemi by Author "Aasen, Ailo"

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    • Choked liquid flow in nozzles: crossover from heterogeneous to homogeneous cavitation and insensitivity to depressurization rate 

      Wilhelmsen, Øivind; Aasen, Ailo (Peer reviewed; Journal article, 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 ...

    • A comparative study of experiments and theories on steady-state evaporation of water 

      Rauter, Michael Tobias; Aasen, Ailo; Kjelstrup, Signe Helene; Wilhelmsen, Øivind (Journal article, 2022)
      A precise description of energy and mass transport across the liquid-vapor interface of water is central in dis- ciplines spanning from climatology to seawater desalination. We present a critical assessment of six recent ...

    • Equation of state for confined fluids 

      Bråten, Vilde; Zhang, Daniel Tianhou; Hammer, Morten; Aasen, Ailo; Schnell, Sondre Kvalvåg; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2022)
      Fluids confined in small volumes behave differently than fluids in bulk systems. For bulk systems, a compact summary of the system's thermodynamic properties is provided by equations of state. However, there is currently ...

    • Free energy of critical droplets - From the binodal to the spinodal 

      Aasen, Ailo; Wilhelmsen, Øivind; Hammer, Morten; Reguera, David (Peer reviewed; Journal article, 2023)
      Arguably, the main challenge of nucleation theory is to accurately evaluate the work of formation of a critical embryo in the new phase, which governs the nucleation rate. In Classical Nucleation Theory (CNT), this work ...

    • One-dimensional mathematical modeling of two-phase ejectors: Extension to mixtures and mapping of the local exergy destruction 

      Wilhelmsen, Øivind; Aasen, Ailo; Banasiak, Krzysztof; Herlyng, Halvor; Hafner, Armin (Peer reviewed; Journal article, 2022)
      The ejector is a process equipment frequently used in refrigeration processes. There is currently a knowledge gap on the efficiency of ejectors operating with mixtures. To address this knowledge gap, we present a one-dimensional ...

    • Thermodynamic properties of the 3D Lennard-Jones/spline model 

      Hafskjold, Bjørn; Travis, Karl; Bailey, Amanda H.; Hammer, Morten; Aasen, Ailo; Wilhelmsen, Øivind (Peer reviewed; Journal article, 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 ≈ 1.74σ. It exhibits the same structural ...