Browsing NTNU Open by Title
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Wind turbine blade icing detection: a federated learning approach
(Peer reviewed; Journal article, 2022)Wind farms are often located at high latitudes, which entails a high risk of icing for wind turbine blades. Traditional anti-icing methods rely primarily on manual observation, the use of special materials, or external ... -
Wind Turbine Design: Evaluation of Dynamic Loads on Large Offshore Wind Turbines
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:241, Doctoral thesis, 2012)A design method for combined aerodynamic and structural (aeroelastic) design of large wind turbine blades has been developed, with the purpose of facilitating conceptual design, parametric studies, optimisation, or cost ... -
Wind turbine drivetrains condition monitoring through SCADA data on farm level
(Master thesis, 2019)The offshore wind industry has grown rapidly over the last decade and drivetrains are increasing in size to reduce the cost of energy. These turbines are operating in a harsh environment. Adopting a preventive maintenance ... -
Wind turbine drivetrains: state-of-the-art technologies and future development trends
(Journal article; Peer reviewed, 2022) -
Wind Turbine in Yawed Operation
(Master thesis, 2011)The task of this project was to investigate the near wake, performance characteristics and yaw moment on a model wind turbine. The test turbine is a horizontal axis three bladed machine with a rotor diameter of 0.9 meter. ... -
Wind Turbine Propulsion of Boats and Ships
(Master thesis, 2010)Increasing focus on reduction of CO2 emissions, and the possibility of future severe shortage of oil have sparked renewed interest in wind as supplementary propulsion of merchant ships. Several alternative solutions are ... -
Wind Turbine Simulations with OpenFOAM
(Master thesis, 2018)An actuator disk model is improved by including an impermeable hub and nacelle. This improves the wake flow a lot, but it turns out that the actuatorDiskExplicitForce model is mesh dependent. A mesh is made that provides ... -
Wind Turbine Wake Interactions - The Influence of Shear on a Wind Turbine Wake
(Master thesis, 2015)Full wake measurements have been performed on a model wind turbine at NTNU s wind tunnel to investigate the impact of shear flow compared to uniform flow on the wake flow. Mean and turbulent velocity measurements have been ... -
Wind turbine wake meandering
(Master thesis, 2013)In this master thesis the meandering of the wake of a three bladed horizontal axis model wind turbine has been studied. Measurements have been conducted by the use of four hot-wire probes located at multiple nearby points ... -
Wind-driven Rain Exposure and Assessment of Building Integrated Photovoltaic Systems
(Master thesis, 2016)This thesis is written as the final semester project of the five-year Master of Science program of Civil and Environmental Engineering (Bygg- og Miljøteknikk) at the Norwegian University of Science and Technology (NTNU) ... -
Wind-driven upwelling of iron sustains dense blooms and food webs in the eastern Weddell Gyre
(Peer reviewed; Journal article, 2023)The Southern Ocean is a major sink of anthropogenic CO2 and an important foraging area for top trophic level consumers. However, iron limitation sets an upper limit to primary productivity. Here we report on a considerably ... -
Wind-induced Dynamic Response and Aeroelastic Stability of a Suspension Bridge crossing Sognefjorden
(Master thesis, 2012)This thesis is a feasibility study, with regards to aerodynamic stability, about the possibility of constructing a suspension bridge with a main span of 3700m over the Sogne Fjord in Norway. The design wind velocity for ... -
Wind-induced Dynamic Response and Aeroelastic Stability of a Suspension Bridge crossing Sognefjorden
(Master thesis, 2012)This thesis is a feasibility study, with regards to aerodynamic stability, about the possibility of constructing a suspension bridge with a main span of 3700m over the Sogne Fjord in Norway. The design wind velocity for ... -
Wind-induced Dynamic Response of High Rise Buildings
(Master thesis, 2013)This thesis aims to investigate the dynamic response of a high rise concrete structure. Calculations are performed for Lerkendal Hotel, a slender 75 meter high building located in Trondheim. Buffeting response has been the ... -
Wind-Induced Response of Long-Span Suspension Bridges Subjected to Span-Wise Non-Uniform Winds: A Case Study
(Master thesis, 2017)The Hardanger Bridge has a main span of 1 310 meters which makes it the longest suspension bridge in Norway and among the top 15 longest in the world as of 2017. The bridge consists of only two traffic lanes and one ... -
Wind-wave directional effects on fatigue of bottom-fixed offshore wind turbine
(Journal article; Peer reviewed, 2019)The current trend for offshore wind energy is that larger turbines are placed on monopile foundations at increasing water depth. This requires larger foundations, increasing the importance of hydrodynamic loading. It is ... -
Wind-wave misalignment effects on floating wind turbines: motions and tower load effects
(Journal article; Peer reviewed, 2014)The dynamic responses of a spar, tension leg platform (TLP), and two semisubmersible floating wind turbines (FWTs) in selected misaligned wind and wave conditions are investigated using numerical simulation with an ... -
WindBarge - Initial Design and Preliminary Assessment of Fatigue Damage
(Master thesis, 2017)Offshore wind is an increasing sector within renewable energy, and WindBarge aims to fill a gap in the offshore development, with a simple and cost efficient design targeted towards intermediate water depths between 40-60 ... -
Winding and Testing of Superconducting Coils
(Master thesis, 2015)Superconducting rotor windings are considered for future large offshore wind turbines for their low weight, volume and their possibility to reduce costs. In a joint European project, INNWIND.EU, a superconducting small ... -
Windjammer: Finding Purpose and Meaning on a Tall Ship Adventure
(Peer reviewed; Journal article, 2023)The Windjammer project started in 2018 as a social entrepreneurship program in Norway for adolescents at risk of social drop-out and societal exclusion. While the effects on society of such programs are difficult to measure, ...