• Pipeline flow modelling with source terms due to leakage: The straw method 

      Morin, Alexandre; Kragset, Steinar; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2012)
      A numerical method for calculating the leakage flow rate through a crack in a pressurized pipeline is presented. Calculations of the flow inside, and leakage from, a pipeline with a running crack are performed. For the ...
    • Sharp interface simulations of surfactant-covered drops in electric fields 

      Teigen, Knut Erik; Lervåg, Karl Yngve; Munkejord, Svend Tollak (Chapter, 2010)
      A level-set method for computations of interfacial flows with insoluble surfactants with electric fields is presented. The discontinuities at the interface are captured in a sharp manner using the ghost-fluid method. The ...
    • Simulation of two-phase flow with varying surface tension. 

      Lervåg, Karl Yngve (Master thesis, 2008)
      This thesis is a study on the effects of varying surface tension along an interface separating two fluids. Varying surface tension leads to tangential forces along the interface. This is often called the Marangoni effect. ...
    • The Local Level-Set Extraction Method for Robust Calculation of Geometric Quantities in the Level-Set Method 

      Ervik, Åsmund (Master thesis, 2012)
      The level-set method is an implicit interface capturing method that can be used in two or more dimensions. The method is popular e.g. in computer graphics, and as here, in simulations of two-phase flow. The motivation for ...
    • Transition between coalescence and bouncing of droplets on a deep liquid pool 

      Zhao, He; Brunsvold, Amy; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2011)
      This study focused on the bouncing of sub-millimetric droplets (below 0.7 mm) of three different fluids, distilled water, technical ethanol and 1-propanol on a deep liquid pool of the same fluids. Four different flow regimes ...
    • Wave propagation in multicomponent flow models 

      Flåtten, Tore; Morin, Alexandre; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2010)
      We consider systems of hyperbolic balance laws governing flows of an arbitrary number of components equipped with general equations of state. The components are assumed to be immiscible. We compare two such models: one in ...