Blar i Institutt for marin teknikk på tittel
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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 ... -
Efficient Installation of Subsea Equipment in Deep Water
(Master thesis, 2018)This thesis presents methods to preform subsea equipment installations, and highlights problems related to the conventional crane operation used in marine operations. The crane operation faces many challenges at water ... -
An Efficient Method for Design and Powering Prediction of Fast Slender Catamarans
(Journal article; Peer reviewed, 2023)This paper presents a parameterized and mathematically defined hull shape that can be tuned to represent modern passenger fast ferries. Additionally, a resistance calculation model for high-speed slender round-bilge ... -
An Efficient Method for Unsteady Hydrofoil Simulations, based on Non-Linear Dynamic Lifting Line theory
(Journal article; Peer reviewed, 2023)This paper presents a Non-linear Dynamic Lifting Line (NDLL)-based method for analysing hydrofoil vessels in waves. The method is validated, and its utility is demonstrated in a case study. The NDLL accounts for dynamic ... -
Efficient Modelling and Design Optimization of Large Floating Wind Turbines
(Doctoral theses at NTNU;2020:356, Doctoral thesis, 2020)Floating wind turbines (FWTs) are considered a promising solution for wind energy harvesting in deep water, but are currently too expensive to compete with other energy sources. Being a relatively new and immature technology ... -
Efficient Prediction of Dynamic Response for Flexible and Multi- Body Marine Structures
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:262, Doctoral thesis, 2008) -
Efficient prediction of wind and wave induced long-term extreme load effects of floating suspension bridges using artificial neural networks and support vector machines
(Journal article; Peer reviewed, 2020)Long-term extreme load effects are one of the primary concerns in the design of civil and offshore structures. Such load effects can be evaluated using the accurate but computationally demanding full long-term method or ... -
Efficient Response Simulation Strategies for Jacket-based Offshore Wind Turbines - An integrated approach combining model reduction and nonlinear irregular wave theory
(Master thesis, 2014)The offshore wind industry has been growing exponentially over the last two decades, thereby establishing itself as one of the most promising alternative energy sources. Technological developments are required to reach ...