Blar i NTNU Open på forfatter "Steen, Sverre"

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    • Actuation moments for hydrofoil flaps 

      Dagestad, Ingvild (Master thesis, 2018)
      The following thesis investigates how the computer software STAR-CCM+ and Xfoil are used to determine the hydrodynamic loads on the two foil profiles EP- PLER E817 and NASA/LANGLEY LS(1)-0417 (GA(W)-1) with trailing ...

    • Added Resistance and Speed Loss of a Ship Found Using Onboard Monitoring Data 

      Dalheim, Øyvind Øksnes; Steen, Sverre (Peer reviewed; Journal article, 2020)
      Prediction of the added resistance or corresponding speed loss in real sea conditions is essential to evaluate the performance of a ship. Assessment of the environmental impact on vessel performance is essential for route ...

    • Additive Manufactured Robot Grippers With Advanced Functionality 

      Steen, Sverre (Master thesis, 2016)
      Kongsberg Automotive produces injection molded parts. These are removed from the mold with a robot gripper. These robot grippers have grown larger as the complexity of the molds grew. This has increased the amount of ...

    • Airborne Wind Turbines for Ship Propulsion 

      Gilje, Kristian Malde (Master thesis, 2013)
      As the focus on the environment and how to produce ?clean? and renewable energy takes a lot of focus these days, the research on this field is constantly increasing. Especially in the shipping industry there are frequently ...

    • Analysis and correction of sea trials 

      Haakenstad, Katharina (Master thesis, 2012)
      When a ship-owner orders a vessel from a shipyard, a contract is written to confirm and guarantee the agreement for both parts. An important requirement of the contract is the vessel's speed at a given engine power, RPM ...

    • Analysis of Propulsion Performance of KVLCC2 in Waves 

      Taskar, Bhushan; Steen, Sverre (Chapter, 2015)
      In this paper, we have analyzed the propulsion performance of KVLCC2 in presence of waves. Different factors affecting the propulsion performance have been studied. Analysis of the extent of change in wake quality and its ...

    • Application of CFD to seakeeping 

      Malin, Steinar (Master thesis, 2013)
      Simulations were done in both Star-CCM+ and FINE/Marine in both calm water and in waves on the KVLCC2 hull. Due to problems and following time limitations only one wave were simulated in FINE/Marine, and 7 wave cases were ...

    • Application of Inviscid Flow CFD for prediction of Motions and Added Resistance of Ships 

      Rørvik, Jørgen (Master thesis, 2016)
      Ships usually travels in waves, but their hull is normally optimized for calm water. One reason for this is that it is expensive to do accurate calculation of resistance in waves. Model test and URANS CFD is the most ...

    • Big Data Analytics As a Tool to Monitor Hydrodynamic Performance of a Ship 

      Gupta, Prateek; Steen, Sverre; Rasheed, Adil (Chapter, 2019)
      A modern ship is fitted with numerous sensors and Data Acquisition Systems (DAQs) each of which can be viewed as a data collection source node. These source nodes transfer data to one another and to one or many centralized ...

    • Biomimetic Ship Propulsion through Oscillating Hydrofoils 

      Godø, John Martin Kleven (Master thesis, 2015)
      ikke tilgjengelig. Kontakt forfatter.

    • Calculation of Service and Sea Margins 

      Eide, Egill (Master thesis, 2015)
      In this thesis two tankers owned by Kristian Gerhard Jebsen Skipsrederi (KGJS) were investigated. A method of calculating service and sea margins for different speeds has been developed. When a ship is in normal operation, ...

    • Comparative Evaluation of the Performance of a Trimaran Seismic Vessel 

      Myklebost, Oda (Master thesis, 2016)
      The scope of this thesis is proposed by the naval architect and maritime engineering company LMG Marin. Currently, they are in the early design phase of a new trimaran concept intended for the seismic industry. This new ...

    • A Comparative Study of the Energy Efficiency of Hydrofoil Vessels and Slender Catamarans 

      Godø, John Martin Kleven; Steen, Sverre (Chapter, 2023)
      The transition to zero-emission energy systems introduces new challenges in fast ferry design, particularly in relation to the increased weight and cost associated with stored and consumed energy. Hydrofoils may address ...

    • A comparison between fully-unsteady and quasi-steady approach for the prediction of the propeller performance in waves: Prediction of the propeller performance in waves 

      Saettone, Simone; Taskar, Bhushan; Regener, Pelle; Steen, Sverre; Andersen, Poul (Peer reviewed; Journal article, 2020)
      Maritime transport is the most energy-effective mode to move large amounts of goods around the world. Hauling cargo via waterway produces an enormous quantity of greenhouse gas emissions. Vessel fuel efficiency directly ...

    • Comparison of efficiency of pushing and pulling thrusters 

      Tornes, Stian Bakke (Master thesis, 2013)
      In this thesis the effect of thruster drive mode (pulling, pushing and pushing with duct) on the propeller design was investigated by the means of systematic calculations in a numerical calculating software (AKPA). It was ...

    • A computationally efficient method for identification of steady state in time series data from ship monitoring 

      Dalheim, Øyvind Øksnes; Steen, Sverre (Peer reviewed; Journal article, 2020)
      An increasing number of ships are being equipped with sensors and devices for monitoring of operational behavior, and the amount and access to operational data is gradually increasing. Due to various reasons described in ...

    • Conceptual design of low-emission ships 

      Lagemann, Benjamin (Doctoral theses at NTNU;2023:186, Doctoral thesis, 2023)
      Human-induced climate change is one of the significant challenges of our time. In order to help limiting global warming, the International Maritime Organization has set out stepwise greenhouse gas emission reduction ambitions ...

    • Critical Assessment of Non-linear Wave Loads in the Design of Offshore Wind Turbines 

      Paulshus, Øivind (Master thesis, 2014)
      Good wind conditions make Dogger Bank a well suited site for offshore wind industry. The harsh environment combined with shallow water, create significant non-linear wave loads which must be accounted for in the ultimate ...

    • Critical Assessment of Non-linear Wave Loads in the Design of Offshore Wind Turbines 

      Paulshus, Øivind (Master thesis, 2014)
      Good wind conditions make Dogger Bank a well suited site for offshore wind industry. The harsh environment combined with shallow water, create significant non-linear wave loads which must be accounted for in the ultimate ...

    • Data mining methods for the analysis of power systems of vessels 

      Swider, Anna (Doctoral theses at NTNU;2018:412, Doctoral thesis, 2018)
      Measurements from on-board monitoring systems of vessels are now increasingly available for data analysis, and their relevance is growing as the ship industry enters the digitilization phase. The analysis of data from ...