Browsing NTNU Open by Author "Reigstad, Gunhild Allard"

Now showing items 1-7 of 7

    • 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 ...

    • 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)
      Liquefaction of CO2 is a necessary step in several parts of the carbon capture, transport and storage (CCS) chain, e.g. for processing for ship transport. By increasing the efficiency of condensation, a lower energy ...

    • Liquid Hydrogen Spills on Water—Risk and Consequences of Rapid Phase Transition 

      Odsæter, Lars Hov; Skarsvåg, Hans Langva; Aursand, Eskil; Ustolin, Federico; Reigstad, Gunhild Allard; Paltrinieri, Nicola (Peer reviewed; Journal article, 2021)
      Liquid hydrogen (LH2 ) spills share many of the characteristics of liquefied natural gas (LNG) spills. LNG spills on water sometimes result in localized vapor explosions known as rapid phase transitions (RPTs), and are a ...

    • Mathematical Modelling of Fluid Flows in Pipe Networks 

      Reigstad, Gunhild Allard (Doktoravhandlinger ved NTNU, 1503-8181; 2014:120, Doctoral thesis, 2014)
      The mathematical description of splitting and merging of flows is an important part of a detailed heat exchanger simulation model suitable for studying dynamic and static flow instabilities. This thesis considers one such ...

    • Pipe Networks: Coupling Constants in a Junction for the Isentropic Euler Equations 

      Morin, Alexandre; Reigstad, Gunhild Allard (Journal article; Peer reviewed, 2015)
      The modelling of junctions in pipe networks with subsonic flows is discussed, where pipes are described by one-dimensional, single-phase isentropic flow models. We first study the Riemann problem in a pipe to understand ...

    • Risk and Consequences of Rapid Phase Transition for Liquid Hydrogen 

      Aursand, Eskil; Odsæter, Lars Hov; Skarsvåg, Hans Langva; Reigstad, Gunhild Allard; Ustolin, Federico; Paltrinieri, Nicola (Chapter, 2020)
      Safe handling of liquid hydrogen (LH2) has gained extra attention over the last years due to an increase in usage to mitigate climate changes. Rapid phase transition (RPT) is a potential safety concern when cryogens, like ...

    • Theories and Mechanism of Rapid Phase Transition 

      Ustolin, Federico; Odsæter, Lars Hov; Reigstad, Gunhild Allard; Skarsvåg, Hans Langva; Paltrinieri, Nicola (Peer reviewed; Journal article, 2020)
      Light hydrocarbons and hydrogen can replace high-alkane fuels with the benefit of reduced CO2 emissions. Their liquefaction to a cryogenic state is one of the most suitable solutions for storage and transport. An unexpected ...