Blar i Institutt for marin teknikk på tittel

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    •  Heavy Lift Methods in Decommissioning of Installations 

      Breidablikk, Line Småge (Master thesis, 2010)
       In this report decommissioning of offshore petroleum platforms have been investigated. It treats decommissioning in general, the process of a typical project. A variety of suitable lifting vessels have been presented, ...

    •  Loads on the Hywind wind turbine during the "flipping-phase" with WindFlip 

      Kvalheim, Espen Vårdal (Master thesis, 2010)
      WindFlip is a concept for transportation and installation of fully assembled floating offshore wind turbines. In this master thesis the relevant part of the operation is the flipping-phase. The flipping-phase is defined ...

    •  Mikrokraftverk for varme- og strømproduksjon 

      Heinänen, Pekka Einar Andersen (Master thesis, 2010)
      Målet for masteroppgaven var å gjøre målinger på en dampmaskin ved MTS under forskjellige driftstilstander og finne ut hvordan den effektivt kan brukes under forskjellig driftstilstander. Når anlegget er ferdig skal det ...

    •  Sammenligning av ulike metoder innen ekstremverdistatistikk 

      Bartz-Johannessen, Christoffer (Master thesis, 2010)
      Hensikten med denne oppgaven har vært å se på ulike metoder som i dag benyttes for å predikere ekstremverdier i marin sammenheng. Fem ulike metoder er sammenlignet. Metodene er valgt på grunnlag av hvor mye de benyttes og ...

    •  Simulation of TDP Dynamics during S-laying of Subsea Pipelines 

      Hong, Wei (Master thesis, 2010)
      During the past one and a half decade, pipeline has been proven to the most economical means of large scale overland transportation for crude oil, natural gas and other products. At the same time, more and more problems ...

    • Near-Wake of an Inclined 6:1 Spheroid at Reynolds Number 4000 

      Strandenes, Håkon; Jiang, Fengjian; Pettersen, Bjørnar; Andersson, Helge Ingolf (Journal article; Peer reviewed, 2019)
      The flow around a 6:1 prolate spheroid at 45 deg inclination angle and Reynolds number 4000 (based on the minor axis) is described. Despite the fact that the inflow is uniform and steady, the resulting wake is highly ...

    • Near-wall effect on flow around an elliptic cylinder translating above a plane wall 

      Zhu, Jianxun; Holmedal, Lars Erik; Myrhaug, Dag; Wang, Hong (Peer reviewed; Journal article, 2020)
      In this work, the flow over an elliptic cylinder near a moving wall is investigated for Reynolds numbers less than 150. Here, the ratio between the gap (i.e., the distance between the cylinder and the wall) and the length ...

    • A new method for optimal ship design in real sea states using the ship power profile 

      Esmailian, Ehsan; Steen, Sverre (Peer reviewed; Journal article, 2022)
      Typically, ships are designed for calm water and a constant design speed. However, a ship experiences different speeds and sea conditions over her lifetime. Following the significant correlations between environment and ...

    • A new power prediction method using ship in-service data: a case study on a general cargo ship 

      Esmailian, Ehsan; Kim, Youngrong; Steen, Sverre; Koushan, Kourosh (Journal article; Peer reviewed, 2023)
      To increase energy efficiency and reduce greenhouse gas (GHG) emissions in the shipping industry, an accurate prediction of the ship performance at sea is crucial. This paper proposes a new power prediction method based ...

    • New Renewable Hydrothermal Liquefaction (HTL) Biofuel: A Combustion and Emissions Study in an Optical Engine 

      Khare, Shivang; Bjørgen, Karl Oskar Pires; Kohansal, Komeil; Haider, Muhammad Salman; Castello, Daniele; Pedersen, Thomas Helmer; Løvås, Terese; Emberson, David Robert (Journal article; Peer reviewed, 2023)
      This study involves the investigation of municipal solid waste (MSW) based biofuel in order to demonstrate its utilization as a diesel blendstock in a compression ignition (CI) engine. The biofuel was produced from the ...

    • New risk control mechanism for innovative deepwater artificial seabed system through online risk monitoring system 

      Zhen, Xingwei; Vinnem, Jan Erik; Han, Yue; Peng, Changyi; Yang, Xue; Huang, Yi (Journal article, 2020)
      The current offshore field development concepts (dry tree or subsea tree) have limitations for petroleum production in ultra-deep water (more than 1500 m), where the challenges are characterized by the depth of water, ...

    • Next Generation Subsea Inspection, Maintenance and Repair Operations 

      Schjølberg, Ingrid; Gjersvik, Tor Berge Stray; Transeth, Aksel Andreas; Utne, Ingrid Bouwer (Peer reviewed; Journal article, 2016)
      This paper presents the latest developments in the project Next Generation Subsea Inspection, Maintenance and Repair (IMR). Subsea IMR operations are frequently carried out in the offshore oil and gas business. Increased ...

    • Non-angular MPC-based Thrust Allocation Algorithm for Marine Vessels - A Study of Optimal Thruster Commands 

      Skjong, Stian; Pedersen, Eilif (Journal article, 2017)
      In this paper, a thrust allocation algorithm for marine vessels based on model predictive control (MPC) theory and a nonangular vector formulation is presented and studied. The main objective in this paper is to highlight ...

    • Non-linear Analysis of Wind Load Subjected Novel Flare Tower Design for Sevan Marine 

      Nøding, Jon Eirik Knutsen (Master thesis, 2012)
      Non-linear analysis of wind load subjected flare tower in Abaqus

    • Non-Linear Clay Soil Model for Lateral Pipe-Soil Interaction 

      Agusta, Arifian; Ji, Guomin; Sævik, Svein (Chapter; Peer reviewed, 2016)
      This paper describes implementation and application of nonlinear lateral soil models for pipeline lateral buckling analysis. Several lateral soil models have been developed in the past and the model developed by Verley is ...

    • Non-linear control and digital twin modeling of the REMUS 100 AUV. 

      Johansen, Joakim Hegg (Master thesis, 2020)
      Bruken av autonome undervannsfarkoster (AUV) i krevende, avsidesliggende miljøer involverer risikoen for kollisjoner og tap av fartøy. Koblet og ulineær dynamikk kombinert med underaktuering og usikker hydrodynamikk gjør ...

    • Non-linear hydroelastic response of a monopile foundation in regular waves 

      Leroy, Vincent; Bachynski, Erin Elizabeth; Gilloteaux, Jean-Christophe; Babarit, Aurelien; Ferrant, Pierre (Peer reviewed; Journal article, 2020)
      This paper presents an original contribution to the coupled hydroelastic simulation of offshore wind turbines foundations. A non-linear coupled simulation tool has been developed to calculate the response of these systems. ...

    • Non-linear Irregular Wave Impact on Monopile Structures 

      Schöpfer, Philipp (Master thesis, 2016)
      This Master Thesis deals with non-linear wave impacts on monopile structures by introducing a potential flow solver named OceanWave3D (OCW3D) for simulating free surface waves and their kinematics under engineering ...

    • NON-LINEAR SOIL MODELS FOR PIPELINE AND RISER ANALYSIS 

      Irman, Arifian Agusta (Master thesis, 2015)
      This thesis describes the development and application of non-linear soil models in pipeline and riser design. A non-linear soil model is typically employed when investigating a complex pipe-soil interaction problem. Two ...

    • Non-linear time domain analysis of cross-flow vortex-induced vibrations 

      Thorsen, Mats Jørgen; Sævik, Svein; Larsen, Carl Martin (Journal article; Peer reviewed, 2017)
      A previously proposed hydrodynamic load model for time domain simulation of cross-flow vortex-induced vibrations (VIV) is modified and combined with Morison's equation. The resulting model includes added mass, drag and a ...