Blar i Institutt for marin teknikk på tittel
Viser treff 1097-1116 av 3417
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Effects of atmospheric stability on the structural response of a 12 MW semisubmersible floating wind turbine
(Peer reviewed; Journal article, 2022)Global dynamic response models used for the design of wind turbines are largely based on neutral stability, which is not representative of real atmospheric conditions. Offshore wind farms, for example, have been seen to ... -
Effects of bedplate flexibility on drivetrain dynamics: Case study of a 10 MW spar type floating wind turbine
(Peer reviewed; Journal article, 2020)This paper deals with the effect of bedplate flexibility on drivetrain dynamics of a 10 MW spar type floating wind turbine. The 10 MW drivetrain bedplate is designed based on extreme design loads and ultimate limit state ... -
Effects of BOP Stack Modelling on Estimated Wellhead Fatigue Damage
(Master thesis, 2013)To date, there are no international codes or standards that deal with estimation offatigue in subsea wellhead systems. Nevertheless have preliminary analytical methodsfor wellhead fatigue estimation been established. These ... -
Effects of floating sun gear in a wind turbine’s planetary gearbox with geometrical imperfections
(Journal article; Peer reviewed, 2015)This paper addresses the effect of gear geometrical errors in wind turbine planetary gearboxes with a floating sun gear. Numerical simulations and experiments are employed throughout the study. A National Renewable Energy ... -
Effects of handling stress and storage conditions on quality of farmed cod (Gadus morhua)
(Master thesis, 2010)Atlantic cod is a promising species for fish farming in Norway. In order to maintain a high fish quality and achieve higher fish quality, it is necessary toincrease the understanding of pre and post mortem biochemical ... -
Effects of hull flexibility on the structural dynamics of a TLP floating wind turbine
(Journal article; Peer reviewed, 2019)Dynamic analysis of floating wind turbines often considers the hull as a rigid body. This paper explores the consequences of modeling the pontoons of a tension leg platform (TLP) wind turbine as flexible beams. The analysis ... -
Effects of Induction and Wake Steering Control on Drivetrain Fatigue and Wind Farm Power Production
(Master thesis, 2020)Effektoptimalisering gjennom vakestyring og aksial induksjonskontroll er et kjent tema innen vindkraft som generelt er bevist til å fungere. Kontrollmanøvreres innflytelse på utmatting av statiske komponenter er generelt ... -
Effects of induction and wake steering control on power and drivetrain responses for 10 MW floating wind turbines in a wind farm
(Peer reviewed; Journal article, 2020)This paper aims to investigate the drivetrain load response caused by induction and wake steering control on two floating wind turbines (FWTs) in a wind farm. In this study, two DTU 10 MW turbines, supported on the nautilus ... -
Effects of onshore and offshore environmental parameters on the leading edge erosion of wind turbine blades: A comparative study
(Peer reviewed; Journal article, 2021)The presence of rain-induced leading edge erosion of wind turbine blades necessitates the development of erosion models. One of the essential parameters for erosion modelling is the relative impact velocity between rain ... -
Effects of Pretension in Bolt for a Slewing Bearing
(Master thesis, 2014)This thesis is to check to bolt pretension for high duty bolted joint in the slewing ring. The bolted joint in the slewing ring is of special type the loads acts off axis of the bolt. For this kind of bolted joint, there ... -
Effects of propeller load fluctuations on performance and emission of a lean-burn natural gas engine at part-load conditions
(Journal article; Peer reviewed, 2022) -
Effects of simulated transportation stress on viability, water release and ammonia excretion of blue mussels (Mytilus edulis) during dry storage
(Master thesis, 2010)Norway has a great potential for blue mussel production. However, the blue mussel industry has not yet reached a commercial viability comparable with other mussel producingc ountries. There are still some major challenges ... -
Effects of soil profile variation and scour on structural response of an offshore monopile wind turbine
(Journal article, 2018)This paper presents an engineering approach to study the effects of soil profile variation and scour on structural response of an offshore monopile wind turbine. A wind-wave model for finite water depth is proposed to ... -
Effects of wave directionality on extreme response for a long end-anchored floating bridge
(Journal article; Peer reviewed, 2019)Reliable design codes are of great importance when constructing new civil engineering concepts such as floating bridges. Previously only a scarce number of floating bridges have been built in rough wave conditions and ... -
Effects of wind field characteristics on pitch bearing reliability: a case study of 5 MW reference wind turbine at onshore and offshore sites
(Peer reviewed; Journal article, 2023)This paper presents a study on pitch bearing basic rating life affected by wind field characteristics at both onshore and offshore wind sites. The National Renewable Energy Laboratory 5 MW reference wind turbine is selected ... -
Effects of Wind-Wave Misalignment on a Wind Turbine Blade Mating Process: Impact Velocities, Blade Root Damages and Structural Safety Assessment
(Peer reviewed; Journal article, 2020)Most wind turbine blades are assembled piece-by-piece onto the hub of a monopile-type offshore wind turbine using jack-up crane vessels. Despite the stable foundation of the lifting cranes, the mating process exhibits ... -
Efficiency Estimation of Synchronous Generators for Marine Applications and Verification With Shop Trial Data and Real Ship Operation Data
(Journal article; Peer reviewed, 2020)Three methods were explored to estimate the efficiency for the conversion of mechanical power to electrical power using synchronous generators in ships at low power factors. Generally, the generator efficiency data is ... -
Efficiency improvement on the ANCF cable element by using the dot product form of curvature
(Peer reviewed; Journal article, 2022)The adoption of the continuum mechanics concept has enabled the absolute nodal coordinate formulation (ANCF) cable element to handle large deformation and large rotation problems. Generally, the generalized elastic forces ... -
Efficient computation of cross-spectral densities in the stochastic modelling of waves and wave loads
(Journal article; Peer reviewed, 2017)A new method is presented for efficient calculation of auto- and cross-spectral densities in the stochastic modelling of ocean waves and wave loads. As part of the short-term response analyses, the method may contribute ... -
Efficient Determination of the Long-term Extreme Responses by the Modified Environmental Contour Method for a Combined Wind Turbine and Wave Energy Converter System
(Journal article; Peer reviewed, 2018)This paper deals with the performance of the modified environmental contour method (MECM) for determining long-term extreme load effect in a combined wind turbine and wave energy converter system. The wind turbine of the ...