Browsing Institutt for marin teknikk by Title
Now showing items 2978-2997 of 3421
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Strategies on Methane Slip Mitigation of Spark-Ignition Natural Gas Engine during Transient Motion
(Peer reviewed; Journal article, 2021)The liquefied natural gas (LNG)-fueled ships were provisioned to meet the strict emission legislation in the marine application since 2000. However, the scientific approach of burning the low-emission natural gas in lean ... -
Stratified flow over complex topography: A model study of the bottom drag and associated mixing
(Journal article; Peer reviewed, 2012)The flow of stratified fluid over complex topography may lead to a significant drag on the fluid, exerted by the bottom obstacles. Using a 2-m resolution, three-dimensional, non hydrostatic numerical ocean model, the drag ... -
Streamlined semi-automatic data processing framework for ship performance analysis
(Peer reviewed; Journal article, 2023)The hydrodynamic performance of a sea-going ship can be analyzed using data from different sources, like onboard recorded in-service data, AIS data, and noon reports. Each of these sources is known to have its inherent ... -
Strength Analysis Modelling of Flexible Umbilical Members for Marine Structures
(Journal article; Peer reviewed, 2012)This paper presents a 3-dimensional finite element formulation for predicting the behaviour of complex umbilical cross-sections exposed to loading from tension, torque, internal and external pressure including bending. ... -
Strength Analysis of Membrane Structures for the Support of Future Solar Islands
(Master thesis, 2023)The report provides a comprehensive overview of membrane materials, including their mechanical and structural properties, as well as their applications in various industries. It discusses the behavior of membrane structures ... -
Strength assessment of transversal T-beam webs in cruise ships
(Master thesis, 2017)The strength assessment method for evaluation transversal T-beam webs in cruise ships developed. The method is based on nonlinear finite element analysis. The method is applied to a several web configurations in case study ... -
Stress analysis of a monopile foundation under the hammering loads
(Master thesis, 2017)The installation of monopile is a very important process in offshore wind turbine construction. Duringthemonopilebeingdrivendownbyhydraulichammer,hugeenergytransfersfromham mer to pile, which may cause monopile inclination. ... -
Stress analysis of the structural interface between the spar and the torus in the combined wind and wave energy concept STC
(Master thesis, 2016)The Spar Torus Combination (STC) is a typical concept which consists of a spar-type floating wind turbine (FWT) and a torus-shaped wave energy converter (WEC), which utilizes the wind energy and wave energy simultaneously. ... -
Stress Analysis of Turret Interacting with Ship Hull Structure
(Master thesis, 2010)The trend in offshore oil and gas industry has been that new oil and gas fields are more remote in terms of water depth and in distance from existing infrastructure. The high price for oil and gas drives the industry to ... -
Stress influence of offshore wind farms on the reproduction of the viviparous eelpout (Zoarces viviparus)
(Master thesis, 2013)Okende behov for fornybar energi har skapt en økning av installasjoner for fornybar marin energi. Disse installasjonene varierer fra bølge- og tidevannskraft til offshore vindkraft. Påvirkning av offshore vindkraft på ... -
Structural Analysis of the Gripper Connection during Monopile Installation
(Master thesis, 2016)Offshore wind energy market is increasing rapidly due to the very high demand for the green energy worldwide. At present, the most dominated structure for the offshore wind turbine is a monopile structure which is getting ... -
Structural Control of Offshore Wind Turbines – Increasing the role of control design in offshore wind farm development
(Doctoral theses at NTNU;2019:335, Doctoral thesis, 2019) -
Structural damping estimation for floating welded steel structures
(Master thesis, 2022)Dempingsnivået er viktig for å bestemme responsen ved nyttige frekvenser i design av store flytende sveiste stålstrukturer. Nåværende praksis er baser på tommelfingerregler, noe som betyr at nøyaktige estimeringer ikke ... -
Structural Design and Dynamic Analysis of a Tension Leg Platform Wind Turbine, Considering Elasticity in the Hull
(Master thesis, 2016)There is an increasing interest in using offshore wind turbines in deeper waters. The tension leg platform wind turbine (TLPWT) is seen as a promising concept for this. Low production costs and limited motions give the ... -
Structural Design Considerations for an Ice Resistant Semi Submersible Drilling Rig
(Master thesis, 2014)Arctic areas contain large oil and gas fields demanding robust drilling and field development solutions. Semi submersible drilling and completion rigs are highly used for the current operations. Operating while surrounded ... -
Structural integrity of plates and panels subjected to accidental fires
(Master thesis, 2019)Brann på offshore konstruksjoner kan få alvorlig konsekvenser. Et eksempel på dette er Piper Alpha katastrofen i 1986. Branndesign er ofte basert forenklinger og antakelser, noe som gjør det vanskelig å reflektere ... -
Structural Load Analysis of a Wind Turbine under Pitch Actuator and Controller Faults
(Journal article; Peer reviewed, 2014)In this paper, we investigate the characteristics of a wind turbine under blade pitch angle and shaft speed sensor faults as well as pitch actuator faults. A land-based NREL 5MW variable speed pitch reg- ulated wind turbine ... -
Structural loads on a free-falling lifeboat
(Master thesis, 2017)Free-falling lifeboats are a method of escaping hazardous events in open sea. They rest at a skid until released and launched into the water. It is important that the use of free-falling lifeboats ensure a safe evacuation. ... -
Structural Modelling, Coupled Dynamics, and Design of Large Floating Wind Turbines
(Doctoral theses at NTNU;2022:246, Doctoral thesis, 2022)Floating wind turbines (FWTs) are expected to contribute significantly in the transition to a low-carbon economy. In addition to their increased competitiveness for water depths higher than 50-60 m, FWTs may also benefit ... -
Structural Preservation of the Statsraad Lehmkuhl - Feasibility and Associated Risks of Choosing Welding as the Primary Repair Method
(Master thesis, 2019)Preservering av et historisk seilskip kan betegnes som en prosess hvor man ønsker å respektere fortiden og sikre fremtiden. I tillegg til å være uvurderlige bidrag til maritim kulturarv, er seilskip som Statsraad Lehmkuhl ...