Blar i NTNU Open på tittel

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    • Flow Around Curved Tandem Cylinders 

      Aasland, Tale Egeberg; Pettersen, Bjørnar; Andersson, Helge Ingolf; Jiang, Fengjian (Peer reviewed; Journal article, 2022)
      The flow around curved tandem cylinders of equal diameter has been investigated for the first time, by means of direct numerical simulations. A convex configuration was used. The nominal gap ratio was L/D = 3.0 and a ...

    • Flow based market clearing - GSK strategies 

      Svarstad, Vegard Bremerthun (Master thesis, 2016)
      In these days, the Nordic TSOs examines the possibility to introduce Flow-Based(FB) market clearing in the Nordic power market. The FB market clearing will theoretically give a better market solution than the current Net ...

    • Flow based market clearing: estimation of net positions 

      Nordeng, Ragnhild Aker (Master thesis, 2016)
      Together with the other Nordic transmission system operators Statnett is currently investi- gating the possibility of implementing the so called Flow Based Market Clearing approach. Flow Based Market Clearing is today the ...

    • Flow Based Market Coupling 

      Jegleim, Birgit (Master thesis, 2015)
      The current market coupling algorithm used in the Nordic power market is the Net Transfer Capacity (NTC) model. It maximizes social surplus according to the transfer capacities between bidding areas, which are provided by ...

    • Flow Behaviour of Fine-Grained Soils 

      Adamson, Matthew (Master thesis, 2017)
      Estimating the propagation and run-out distances of a landslide is a crucial part of risk assessment and mitigation for infrastructure development in Norway. Computational and numerical models are currently being developed ...

    • Flow Behaviour of Water-in-North Sea Acidic Crude Oil Emulsions and Preparation of Synthetic Reference Acidic Oils and Their Emulsions 

      Kelesoglu, Serkan (Doktoravhandlinger ved NTNU, 1503-8181; 2010:259, Doctoral thesis, 2010)
      Two phase liquid-liquid flow is described as the concurrent flow of two immiscible liquids, encountered widely in the petroleum industry during the production and transportation of oil and water. Good estimations of ...

    • Flow conditions in spiral casing and the influence of various bend geometries 

      Augustson, Tage Morken (Master thesis, 2013)
      Both previous experiments and CFD simulations show that bends have a significant influence on the downstream flow field, especially by causing so-called ?skewed velocity profiles?. Based on the simulations carried out in ...

    • Flow equivalence and orbit equivalence for shifts of finite type and isomorphism of their groupoids 

      Carlsen, Toke Meyer; Eilers, Søren; Ortega Esparza, Eduardo; Restorff, Gunnar (Journal article; Peer reviewed, 2018)
      We give conditions for when continuous orbit equivalence of one-sided shift spaces implies flow equivalence of the associated two-sided shift spaces. Using groupoid techniques, we prove that this is always the case for ...

    • Flow field and performance of a vertical-axis wind turbine on model buildings 

      Jooss, Yannick; Bolis, Roberto; Bracchi, Tania; Hearst, R. Jason (Journal article, 2022)
      The placement of a scaled-down Savonius (drag) vertical-axis wind turbine on model buildings is analysed experimentally by the use of turbine performance and flow field measurements in a wind tunnel. The set-up consists ...

    • Flow field optimisation and stack design for Anion Exchange Membrane Water Electrolysis 

      Eivind Ulstein Standal; Henning Levik Ørke (Bachelor thesis, 2020)
      Anion Exchange Membrane VannElektrolyse (AEMVE) er en moderne teknologi med utspring fra PEM- og AWE vannelektrolyse. Anion Exchange Membrane (AEM) og et alkalisk miljø gjør at elektrolyseprosessen kan utføres med ...

    • Flow Field Patterns for Proton Exchange Membrane (PEM) Fuel Cells 

      Sauermoser, Marco; Kizilova, Nataliya; Pollet, Bruno; Kjelstrup, Signe (Journal article; Peer reviewed, 2020)
      Flow field designs for the bipolar plates of the proton exchange membrane fuel cell are reviewed; including the serpentine, parallel, interdigitated, mesh type or their mixtures, furthermore 2D circular and 3D tubular ...

    • Flow Improvers for Heavy Crude Oil Transport in Pipe 

      Fagerdal, Stine (Master thesis, 2014)
      The transportation of heavy oil is challenging as the oil has high viscosity and heavy components like asphaltenes. By finding an effective flow improver the transporting could be less demanding and more cost effective. ...

    • Flow in Pelton turbines 

      Furnes, Kjartan (Master thesis, 2013)
      The flow in Pelton turbines is subsonic, turbulent, multiphase (water, air, and water vapor from cavitation), has high speeds, sharp gradients, free surface and dynamic boundary conditions. A static grid is unsuitable for ...

    • The flow in the induction and entrance regions of lab-scale wind farms 

      Vinnes, Magnus Kyrkjebø; Worth, Nicholas Alexander; Segalini, Antonio; Hearst, Robert Jason (Peer reviewed; Journal article, 2023)
      With the increasing demand for wind energy, it is important to be able to understand and predict the available wind resources. To that end, the present wind tunnel study addresses the flow in the induction and entrance ...

    • Flow manipulation for improved operation of hydraulic turbines 

      Sagmo, Kristian (HydroCen brief;Nr. 6, Report, 2022)

    • Flow Measurements Derived from Camera Footage Using an Open-Source Ecosystem 

      Meier, Robert; Tscheikner-Gratl, Franz; Steffelbauer, David; Makropoulos, Christos (Peer reviewed; Journal article, 2022)
      Sensors used for wastewater flow measurements need to be robust and are, consequently, expensive pieces of hardware that must be maintained regularly to function correctly in the hazardous environment of sewers. Remote ...

    • Flow of non-Newtonian fluids in single fractures and fracture networks: Current status, challenges, and knowledge gaps 

      Lavrov, Alexandre (Peer reviewed; Journal article, 2023)
      Flow of non-Newtonian fluids in rock fractures is ubiquitous in engineering practice and involves e.g. cement flow in tunnel grouting, drilling fluid flow when a fracture is met during drilling, and flow of fracturing ...

    • Flow over a single shallow dimple 

      Zhu, Jianxun; Tian, Cai; Holmedal, Lars Erik (Peer reviewed; Journal article, 2024)

    • Flow past porous cylinders and effects of biofouling and fish behavior on the flow in and around Atlantic salmon net cages 

      Gansel, Lars C. (Doktoravhandlinger ved NTNU, 1503-8181; 2013:312, Doctoral thesis, 2013)
      Norwegian salmon aquaculture has experienced a tremendous growth within the past decades and Norway is today the biggest salmon producer in the world. The growth of aquaculture production was enabled by technological ...

    • Flow pattern transitions in and hysteresis effects of falling film flow over horizontal tubes related to LNG heat exchangers 

      Austegard, Anders; Bandopadhyay, Mayukh; Løvseth, Sigurd Weidemann; Brunsvold, Amy (Journal article; Peer reviewed, 2015)
      Spiral wound heat exchangers with horizontal tube configurations are used extensively in the chemical, refrigeration, petroleum and food industry, and are core components in many natural gas liquefaction plants. For improved ...