Browsing Fakultet for ingeniørvitenskap (IV) by Title
Now showing items 22900-22919 of 23007
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Wind Tunnel Study on the Tip Speed Ratio’s Impact on a Wind Turbine Wake Development
(Peer reviewed; Journal article, 2022)(based on the turbine diameter and the freestream velocity). For all cases, the mean streamwise velocity deficit at the centerline evolves close to a power law in the far wake, and we check the validity of the Jensen and ... -
Wind Tunnel Testing of Bridge Decks
(Master thesis, 2016)The studies done in this thesis was connected to an early stage implementation of a new test method for ?nding aerodynamic properties of bridge deck sections at the Norwegian University of Science and Technology (NTNU), ... -
Wind tunnel testing of bridge decks - Vindtunneltesting av brutverrsnitt
(Master thesis, 2018)First different designs of bridges were investigated to lay out an overview of what bridge designs there were on the table for production and testing. Different bridge cross sections seemed to be favourable for different ... -
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 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-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-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 ... -
Window design optimization in terms of daylight and thermal comfort for a typical Norwegian residential building
(Master thesis, 2021)Vindusdesign påvirker dagslystilgjengeligheten, termisk komfort i tillegg til energibehovet til bygningen. Et uheldig vindusdesign kan medføre at et bygg går fra god til dårlig ytelse. I denne masteroppgaven er norske ... -
Window spacers and edge seals in insulating glass units: A state-of-the-art review and future perspectives
(Journal article; Peer reviewed, 2013)Insulating glass (IG) units typically consist of multiple glass panes that are sealed and held together structurally along their perimeters. This report describes a study of edge seals in IG units. First, we summarize the ...