Blar i Institutt for marin teknikk på emneord "Marin teknikk, Marin hydrodynamikk"

Viser treff 61-80 av 95

    • Numerical Simulation of Viscous Shear Flow Around Tandem Cylinders 

      Attanapola, Dhanushi Nayanatara (Master thesis, 2018)
      The project, Coastal Highway E39, introduces the concept of Submerged Floating Tube Bridge (SFTB). The bridge is simplified as tandem cylinders with longitudinal length-diameter ratio L/D = 3.2, diameter D=1.0 and span-wise ...

    • Numerical Simulations of Flow around a Simplified Hull Form 

      Emblemsvåg, Øyvind Andre Hagen (Master thesis, 2016)
      Hydrodynamic flow around a simplified hull form has been investigated using numerical simulations in OpenFOAM. The flow in question is three-dimensional and turbulent at a Reynolds number of 26,400. The base geometry is a ...

    • Numerical Simulations of Swimming Fish 

      Mossige, Jon Coll (Master thesis, 2017)
      A profound understanding of how a fish swims may be used to design innovative propulsion units with higher efficiency than the conventional screw propellers. The gain of such understanding may be aided by the use of ...

    • Numerical Study of Seabed Boundary Layer Flow around Monopile and Gravity-based Wind Turbine Foundations 

      Trygsland, Eirik (Master thesis, 2015)
      Computational fluid dynamics (CFD) has been used to study the boundary layer flow around three different bottom-fixed offshore wind turbine foundation designs. Two of the designs are gravity-based foundations, where one ...

    • Numerical Study on a Floating Wind Turbine in Intermediate Depth 

      Nærum, Even Sandøy (Master thesis, 2017)
      Floating wind turbines are considered to be a promising source for renewable energy. Offshore wind power production is moving towards larger turbines and deeper water, and FWT's can unlock areas of rich wind resources ...

    • Numerical Study on Wave Drift Loading on Slender Marine Structures 

      Vadholm, Julie (Master thesis, 2017)
      This master thesis investigates the wave drift forces acting on slender structures through numerical simulations. Basic theory is presented along with an overview of how the problem is treated in the industry and a description ...

    • Out of Plane Bending of Mooring Chains - Finite Element Analysis of a 7-link Model 

      Berthelsen, Katarina (Master thesis, 2017)
      This master's thesis is an investigation of out of plane bending (OPB) as a failure mode connected to the upper chain section of offshore mooring lines. A comprehensive literature study was done to present the OPB mechanism, ...

    • Physical investigation of slamming loads on a 2D body 

      Øien, Pauline Kværnes (Master thesis, 2015)
      In this thesis a physical investigation of the slamming loads on a two-dimensional body is performed. It includes an experimental analysis of a drop test performed at MARINTEK's laboratories on a wedge shaped section in ...

    • Pipeline Integrity Assessment of Dent with Gouge after Trawling Impact 

      Aadal, Adrian Haugsand (Master thesis, 2017)
      Damage to pipelines from interaction with trawler-gear affects the long-term integrity of the pipeline, and interference from trawling-equipment on subsea pipelines is a relatively common occurrence. This thesis looks on ...

    • Resistance analysis of trimaran service vessel using CFD 

      Hatlevik, Anita Solhaug (Master thesis, 2018)
      Service vessels within the aquaculture industry are normally designed as catamarans, however, the ships experience large resistance, where the contribution from wave resistance is dominant. In order to increase the ship ...

    • Resistance due to open moonpools on offshore ships 

      Nesjø, Eirik Nubdal (Master thesis, 2015)
      A moonpool is a vertical well in a vessels hull that is exposed to the sea. Many types of offshore vessels are equipped with such a moonpool, to facilitate maritime operations. The water column inside of the moonpool is ...

    • Seakeeping Analysis Comparison Between Viscous And Inviscid CFD 

      Vigsnes, Joakim Tveiten (Master thesis, 2018)
      With the global community's increased focus on a green and more sustainable environment, stricter demands are being invoked on ship design. Consequently, knowledge on how the vessel responds in a realistic sea-condition ...

    • Sheltering Analysis of Gravity Based Structures in Shallow Water 

      Wallentinsen, Asbjørn Sve (Master thesis, 2018)
      This thesis has addressed the hydrodynamic problem of sheltering effects from gravity based structures by both numerical and experimental methods. GeniE is used for creating panel models of the structures studied. Wadam ...

    • Simulation of flow around a Viking ship rudder. 

      Heggem, Thomas (Master thesis, 2015)
      Computational fluid dynamics (CFD) is a numerical method of solving the Navier-Stokes equations for all points in a grid, or mesh. By performing this operation over multiple time steps, the resulting velocity and pressure ...

    • Simulation of Flow Around an Oil Boom 

      Bjørvik, Henning (Master thesis, 2015)
      The interFoam solver is used in this thesis. This solver applies the VOF method to trace the interface between two fluids. This method and the interFoam solver is thoroughly discussed in this thesis. A convergence study ...

    • SIMULATION OF RISER DISCONNECTION IN STOCHASTIC WAVES 

      Kinge, Helene Ruth Minet (Master thesis, 2014)
      Ever since the first oil was discovered in Norway in 1971 the production rates have varied. The development has gone from few wells with high production rates to several wells with lower production rates. It is expected ...

    • Small Water Plane Area Solutions for Access of Offshore Wind Turbines 

      Grøtting, Heine (Master thesis, 2015)
      In 2014, 536 offshore wind turbines were installed on European shelf, connecting an average of 5.9 MW to the grid every day. About two thirds of this were installed in the North Sea. This new and emerging market represents ...

    • The influence of the choice of propeller design tool on propeller performance 

      Skåland, Edvard Knutsen (Master thesis, 2016)
      In this master thesis different propeller design and analysis methods are presented and compared in terms of the accuracy and computational efficiency of their theory. These methods include lifting line, vortex lattice ...

    • The potential energy savings by application of a wave foil on the autonomous container vessel ReVolt 

      Riley, Eivind Finne (Master thesis, 2015)
      ReVolt is an electrically propelled, autonomous concept container ship designed by DNV GL to minimize the energy consumption and cost; however, the added resistance in waves is a large resistance contributor. Effectively, ...

    • Thrust Optimisation of an Oscillating Hydrofoil - By Non-Sinusoidal Sway and Yaw Motion 

      Bösch, Lennard (Master thesis, 2017)
      Past research has shown that oscillating hydrofoils can enhance the propulsion efficiency significantly compared to traditional propellers. Dynamic stall plays an important role in the thrust generated by an oscillating ...