• Models and numerical methods for two-phase flow of CO2 in pipes 

      Reinertsen, Aleksander (Master thesis, 2015)
      Key to the transport phase of carbon capture and storage (CCS) is understanding the behavior of liquid or supercritical CO2 in pipelines, and the consequences of cracks and pipe depressurization. It is therefore useful to ...
    • Predicting triggering and consequence of delayed LNG RPT 

      Aursand, Eskil; Hammer, Morten (Journal article; Peer reviewed, 2018)
      We develop a model for delayed rapid phase transition (RPT) in LNG spills based on thermodynamics and nucleation theory which includes predictions of both triggering and vapor explosion consequence. We discover that the ...
    • The spinodal of single- and multi-component fluids and its role in the development of modern equations of state 

      Aursand, Peder; Gjennestad, Magnus Aashammer; Aursand, Eskil; Hammer, Morten; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2016)
      The spinodal represents the limit of thermodynamic stability of a homogeneous fluid. In this work, we present a robust methodology to obtain the spinodal of multicomponent fluids described even with the most sophisticated ...
    • Thermodynamic modeling with equations of state: present challenges with established methods 

      Wilhelmsen, Øivind; Aasen, Ailo; Skaugen, Geir; Aursand, Peder; Austegard, Anders; Aursand, Eskil; Gjennestad, Magnus Aashammer; Lund, Halvor; Linga, Gaute; Hammer, Morten (Journal article; Peer reviewed, 2017)
      Equations of state (EoS) are essential in the modeling of a wide range of industrial and natural processes. Desired qualities of EoS are accuracy, consistency, computational speed, robustness and predictive ability outside ...
    • Thermodynamic models to accurately describe the PVTxy-behavior of water / carbon dioxide mixtures 

      Aasen, Ailo; Hammer, Morten; Skaugen, Geir; Jakobsen, Jana Poplsteinova; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2017)
      Carbon dioxide/water (CO2/H2O) mixtures are of much interest in carbon capture and storage, atmospheric science, in the description of human lungs and in the processing of food and beverages. We present a comprehensive ...
    • 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 ...
    • Towards an engineering tool for the prediction of running ductile fractures in CO2 pipelines 

      Skarsvåg, Hans Langva; Hammer, Morten; Munkejord, Svend Tollak; Log, Alexandra Metallinou; Dumoulin, Stephane; Gruben, Gaute (Peer reviewed; Journal article, 2023)
      A prerequisite for the deployment of CO2 capture and storage (CCS) is to establish a large network of high-pressure transport pipelines. It is then vital to assess new and existing pipeline designs for running ductile ...