• Vortex generator's effect on trailing edge wake and fluid structure interaction 

      Besirovic, Hasan (Master thesis, 2020)
      Detaljer rundt bruk av virvelgeneratorer i hydrodynamiske miljøer og deres effekter på mildning av virvelinduserte vibrasjoner er ennå ikke tilstrekkelig undersøkt i litteraturen. Vannkraftverk som er utsatt for disse ...
    • Vortex Induced Fatigue Damage of a Steel Catenary Riser near the Touchdown Point 

      Lejlic, Emir (Master thesis, 2013)
      In this thesis, the fatigue damage of a steel catenary riser was investigated, especially in the vicinity of the touchdown point.The steel catenary riser is a promising riser solution due to its simplicity and low cost. ...
    • Vortex Induced Vibrations in Fish Farm Structural Elements 

      Wergeland, Therese Veland (Master thesis, 2015)
      Norway produces over 14 million meals of salmon every day. This corresponds to an annual value of close to 40 billion NOK. The world s continuous population increase will require a substantial increase in food production. ...
    • Vortex induced vibrations of free span pipelines 

      Koushan, Kamran (Doktoravhandlinger ved NTNU, 1503-8181; 2009:106, Doctoral thesis, 2009)
      Pipelines from offshore petroleum fields must frequently pass overareas with uneven seafloor.  In such cases the pipeline may havefree spans when crossing depressions. Hence, if dynamic loads canoccur, the free span ...
    • Vortex Induced Vibrations of Marine Risers 

      Knardahl, Geir Magnus (Master thesis, 2012)
      SummaryThis Master s Thesis goal is to present fundamental physical aspects of Vortex Induced Vibrations (VIV) of marine risers, and outline methods for suppression of VIV. Main emphasis has been given to the use of strakes, ...
    • Vortex Induced Vibrations of Pipelines With Non-Linear Seabed Contact Properties 

      Ulveseter, Jan Vidar; Sævik, Svein; Larsen, Carl Martin (Chapter; Peer reviewed, 2016)
      A promising time domain model for calculation of cross-flow vortex induced vibrations (VIV) is under development at the Norwegian University of Science and Technology. Time domain, as oppose to frequency domain, makes it ...
    • Vortex Induced Vibrations of Slender Catenary Structures 

      Simensen, Ingrid Kornberg (Master thesis, 2015)
      A wide range of offshore science and engineering applications utilize slender catenary-shaped structural elements in their design. These applications include moorings and steel catenary riser designs. The susceptibility ...
    • Vortex Induced Vibrations of Slender Marine Structures 

      Brunborg, Maren (Master thesis, 2013)
      The main objective of this thesis is to study the behaviour of slender marine structures exposed to vortex induced vibrations (VIV). Especially the interaction between active response frequencies is important. This is done ...
    • Vortex Induced Vibrations Of Slender Marine Structures: Inverse Analysis 

      Wang, Daming (Master thesis, 2013)
      With the development of the offshore engineering and the increasing of water depth, VIV (vortex induced vibrations) becomes a big challenge of the design of slender marine structures. In engineering field, we use some ...
    • Vortex Induced Vibrations on an ''Artificial Seabed'' for Support of a Floating Bridge 

      Grevstad, Simon (Master thesis, 2015)
      The engineering company Reinertsen is planning a floating bridge with tunnel that will go across the Sognefjord. Reinertsen has designed what they call an "artificial seabed" to be used for anchoring of the floating bridge. ...
    • Vortex Induced Vibrations Response Evaluation 

      Feri, Herliawan (Master thesis, 2010)
      In designing oil and gas pipelines, many aspects should be considered. One of those aspects is fatigue damage due to time varying stresses in the pipe. The stresses in the pipe may be caused by dynamic loads and the most ...
    • Vortex interaction in the wake of a two- and three-bladed wind turbine 

      Bartl, Jan Michael Simon; Hansen, Thomas; Kuhn, Wolf Ludwig; Mühle, Franz Volker; Sætran, Lars Roar (Peer reviewed; Journal article, 2020)
      The vortex interaction in the wake behind a two- and three-bladed model scale wind turbine is investigated. The two rotors have equal solidity, and produce similar power and thrust at the design tip speed ratio. Phase-averaged ...
    • Vortex system around a step cylinder in a turbulent flow field 

      Tian, Cai; Jiang, Fengjian; Pettersen, Bjørnar; Andersson, Helge Ingolf (Peer reviewed; Journal article, 2021)
      The vortex system around the step surface of a step cylinder with a diameter ratio D/d=2 at Reynolds number (ReD) 3900 was investigated by directly solving the three-dimensional Navier–Stokes equations. Formation mechanisms ...
    • Vortex-induced vibrations of a vertical riser with time-varying tension 

      Thorsen, Mats Jørgen; Sævik, Svein (Journal article; Peer reviewed, 2017)
      Numerical simulations of a vertical tensioned riser in a sheared flow are performed, where the riser top end oscillates sinusoidally in the vertical direction. The oscillating top-end motion causes tension variations and ...
    • VR-Modelling of Data from "Norway Digital" in Combination with other 3D Models 

      Fredheim, Stig Henning (Master thesis, 2014)
      The purpose with this master thesis was to use new released data from the Norwegian Mapping Authority to makea virtual world that can be looked at with or without Oculus Rift. In addition, existing 3D models of buildingscreated ...
    • Vugge-til-port livsløpsanalyse av boligene Giske, Tafjord og Faro 

      Halkjelsvik, Ulrik; Dalseth, Øyvind (Bachelor thesis, 2022)
      Som en stor klimapåvirker, har byggenæringen et stort ansvar når det kommer til videre utvikling. Det å ta klimabeviste materialvalg vil være en essensiell del av industriens reduksjon i klimagassutslipp. For å nå de globale ...
    • Vulnerability of Transportation Networks to Earthquakes 

      Abdelkadr, Abdulaziz Osman (Master thesis, 2010)
      Lifelines and Transportation Networks, which convey food, water, fuel, energy, information, and other materials necessary for human existence and functioning, are among the most crucial development indicators for any nation. ...
    • Vurder og modeller den fremtidige effekten av klima på den hydrauliske kapasiteten til avløpsnettet - Case Bergen 

      Tollefsen, Martin (Master thesis, 2018)
      Klima i Norge vil endre seg i tiden som kommer. Det er derfor viktig å tilpasse infrastruktur og bebyggelse mot en endring i nedbørshendelser for å sikre en trygg transport av nedbør fra nedslagsfeltet til resipienten for ...
    • Vurdering av 4D planlegging og VR 

      Mohamud, Ahmed; Farshchian, Alizadeh; Lemming, Tobias (Bachelor thesis, 2021)
      SAMMENDRAG Digitalisering er blitt sett på som nøkkelen til å løse mange problemstillinger i bygge- og- anleggsbransjen. Vår oppgave, som forhåpentligvis bidrar til økt digitalisering, handler om å undersøke effekter og ...
    • Vurdering av 4D som planleggingsverktøy i Veidekke 

      Quach, Jackie (Master thesis, 2018)
      .