Nye registreringer

  • Controller Analysis in Real-Time Hybrid Model Testing of an Offshore Floating System 

    Vilsen, Stefan Arenfeldt; Sauder, Thomas Michel; Føre, Martin; Sørensen, Asgeir Johan (ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, Volume 7B: Ocean Engineering;OMAE2018-77859,, Chapter, 2018-06-25)
    This paper presents an experimental study using Real-Time Hybrid Model (ReaTHM) testing of a moored floating cylindrical buoy, conducted in a wave basin. ReaTHM testing is a method for studying the dynamics of marine ...
  • Free Surface Reconstruction for Phase Accurate Irregular Wave Generation 

    Aggarwal, Ankit; Pakozdi, Csaba; Bihs, Hans; Myrhaug, Dag; Alagan Chella, Mayilvahanan (Journal article; Peer reviewed, 2018-09-29)
    The experimental wave paddle signal is unknown to the numerical modellers in many cases. This makes it quite challenging to numerically reproduce the time history of free surface elevation for irregular waves. In the present ...
  • Evaluation of Nonlinear Material Behavior for Offshore Structures Subjected to Accidental Actions 

    Storheim, Martin; Alsos, Hagbart Skage; Amdahl, Jørgen (ASME digital collection;OMAE-17-1044, Journal article; Peer reviewed, 2018-01-09)
    Evaluation of the nonlinear structural response of any structure is a challenging task; a range of input parameters are needed, most of which have significant statistical variabil- ity and the evaluations require a high ...
  • Risk assessments in the Norwegian aquaculture industry: Status and improved practice 

    Holmen, Ingunn Marie; Utne, Ingrid Bouwer; Haugen, Stein (Journal article; Peer reviewed, 2018-11)
    The Norwegian aquaculture industry has the potential to become the country’s leading ocean industry in the future. More than 99% of the produced biomass is Atlantic salmon and trout. Norwegian fish farming is characterised ...
  • OC2018 A-116 - Loads, design and operation of floaters in the Arctic - Ptil – NORD ST20 

    Ommani, Babak; Berthelsen, Petter Andreas; Firoozkoohi, Reza (SINTEF Ocean rapporter;OC2018 A-116, Research report, 2018-12-11)
    This report presents results from hydrodynamic analysis of interaction between glacial ice and semisubmersible drilling units, as part of the Petroleum Safety Authority's project "NORD ST20 Loads, design and operation of ...
  • D3.1 Fishery Pilot Definition 

    Granholm, Göran; Aarsæther, Karl Gunnar; Uriondo, Zigor; Quincozes, Iñaki; Jensen, Jørgen Haavind; Haugen, Joakim (Data-Driven Bioeconomy;D3.1, Research report, 2017-10-20)
    The objective of WP3 Fishery Pilot is to demonstrate how Big Data can boost the fishery sector. The Fishery Pilot focus is on two separate types of fisheries in two countries: Oceanic Tuna fisheries in Spain and small ...
  • Force actuated real-tme hybrid model testing of a moored vessel: A case study investigating force errors 

    Ueland, Einar Skiftestad; Skjetne, Roger; Vilsen, Stefan Arenfeldt (Journal article; Peer reviewed, 2018)
    This paper presents a study where real-time hybrid testing is used to emulate a moored barge. The barge is modelled physically while the mooring forces are simulated numerically and actuated onto the physical substructure. ...
  • An anisotropic friction model in non-bonded flexible risers 

    Dai, Tianjiao; Sævik, Svein; Ye, Naiquan (Journal article; Peer reviewed, 2018-05)
    The present paper addresses small scale friction tests and an anisotropic friction model to predict friction for the interface between the anti-wear tape and tensile armors in non-bonded flexible risers. Small scale friction ...
  • Path planning for marine vehicles using Bezier curves 

    Hassani, Vahid; Lande, Simen V. (Journal article; Peer reviewed, 2018-05)
    Over the past few years maritime sector has witnessed an increasing interest in use of autonomous ships and in particular Autonomous Surface Vehicles (ASV) in complex applications with high associated risks. There is an ...
  • A 2D Experimental and Numerical Study of Moonpools With Recess 

    Ravinthrakumar, Senthuran; Kristiansen, Trygve; Ommani, Babak (ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering;OMAE2018-78326, Chapter, 2018-06-25)
    Moonpool resonance is investigated in a two-dimensional setting in terms of regular, forced heave motions of a model with moonpool with different rectangular-shaped recess configurations. A recess is a reduced draft zone ...
  • Numerical and experimental study on the drainage and collapse of a floating flexible bag structure 

    Kristiansen, David; Su, Biao; Volent, Zsolt (Journal article; Peer reviewed, 2018-11)
    This paper addresses the possible drainage and collapse of closed flexible cages in sea-based fish farming. A closed flexible cage is a floating bag structure containing water that is enclosed from the ambient water. ...
  • Ocean futures: Exploring stakeholders' perceptions of adaptive capacity to changing marine environments in Northern Norway 

    Tiller, Rachel; Richards, Russell (Journal article; Peer reviewed, 2018-09)
    Globally, the projected increase in sea surface temperature is expected to facilitate large changes in the marine food web, affect coastal communities, marine ecosystem goods and services, global fisheries, tourism, ...
  • The once and future treaty: Towards a new regime for biodiversity in areas beyond national jurisdiction 

    Tiller, Rachel; De Santo, Elizabeth; Mendenhall, Elizabeth; Nyman, Elizabeth (Journal article; Peer reviewed, 2018-11)
    The current regime governing Areas Beyond National Jurisdiction (ABNJ) as a global commons has resulted in overutilization of fisheries resources and patchwork attempts to regulate resource extraction. States are looking ...
  • Effects of sample preparation on methylmercury concentrations in arctic organisms 

    Braaten, Hans Fredrik Veiteberg; Harman, Christopher Peter; Øverjordet, Ida Beathe; Larssen, Thorjørn (Journal article; Peer reviewed, 2014-04-09)
    The biogeochemical cycling of mercury (Hg) in the marine environment is an issue of global concern, as consumption of marine fish is a major route of human exposure to the toxic specie methylmercury (MeHg). The most widely ...
  • OMAE2017-62056 Effective Power and Speed Loss of Underwater Vehicles in Close Proximity to Regular Waves 

    Daum, Stefan; Greve, Martin; Skejic, Renato (ASME digital collection;OMAE2017-62056, Chapter, 2017-06-30)
    The present study is focused on performance issues of underwater vehicles near the free surface and gives insight into the analysis of a speed loss in regular deep water waves. Predictions of the speed loss are based on ...
  • Numerical and Experimental Study on the Seakeeping Behavior of Floating Closed Rigid Fish Cages 

    Kristiansen, David; Lader, Pål Furset; Endresen, Per Christian; Aksnes, Vegard Øgård (ASME digital collection;OMAE2018-77254, Chapter, 2018-06-25)
    The present paper addresses the seakeeping behavior of a rigid type of floating closed fish cages, with focus on effects of sloshing on the coupled motions and mooring loads. Closed cages have gained much attention recently ...
  • SFI Smart Maritime Annual Report 2016 

    Rialland, Agathe Isabelle (Research report, 2017-04)
    Research activity from all five Work packages (WP) is in good progress, with 24 additional pub-lications in 2016. The joint activity between the research team and industry partners has flour-ished during 2016. First of ...
  • Multiple-degree-of-freedom actuation of rotor loads in model testing of floating wind turbines using cable-driven parallel robots 

    Chabaud, Valentin Bruno; Eliassen, Lene; Thys, Maxime; Sauder, Thomas Michel (Journal article; Peer reviewed, 2018)
    Model testing of offshore structures in ocean basins has been accepted as a necessary step for the validation and calibration of numerical models, as well as for final design checks in extreme environments. While offshore ...
  • SFI Smart Maritime Annual Report 2017 

    Rialland, Agathe Isabelle (Research report, 2018-04)
    The SFI Smart Maritime is dedicated to improving energy efficiency and reducing harmful emissions from ships. With particular focus on the Norwegian Maritime Industry, our mission is to provide our partners with technologies, ...
  • Kalman estimation of position and velocity for ReaTHM testing applications 

    Mehammer, Eirill Bachmann; Føre, Martin; Sauder, Thomas Michel; Chabaud, Valentin Bruno; Parisini, Thomas (Journal article; Peer reviewed, 2018)
    Offshore wind power research is a rapidly growing field, because of the present climate crisis and increasing focus on renewable energy. Model testing plays an important role in the risk and cost analysis associated with ...

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