Browsing NTNU Open by Title

Dynamic response analysis of a catamaran wind turbine installation vessel with focus on the transportation stage

Rangel Valdes, Jorge Luis (Master thesis, 2018)

The United Nations have agreed on the Sustainable Development Goals for the world where one of them is to achieve affordable and clean energy for the whole world for which wind energy would be a good option. Additionally, ...

Dynamic Response Analysis of a Floating Bridge Subjected to Environmental Loads

Cheng, Zhengshun; Gao, Zhen; Moan, Torgeir (Chapter, 2018)

Designing floating bridges for wide and deep fjords is very challenging. The floating bridge is subjected to wind, wave, and current loads. All these loads and corresponding load effects should be properly evaluated, e.g. ...

Dynamic response analysis of a semi-submersible floating wind turbines under combined ice and aerodynamic loads

Pettineo, Enrico (Master thesis, 2021)

This thesis aims to analyze the dynamic response of a semi-submersible floating wind turbine under combined wind and ice loads through a coupled analysis. The importance of the topic is due to the increased interest and ...

Dynamic Response Analysis of a Spar Floating Wind Turbine in Level Ice with Varying Thickness

Tsigkris, Efstathios (Master thesis, 2016)

This master thesis is the final step before graduation from the Offshore Engineering track of the European Wind Energy Master. Both the Diploma award universities contributed significantly in the completion if this work ...

Dynamic response analysis of a tension-leg floating wind turbine

Lygren, Jon Erik Lønøy (Master thesis, 2011)

Offshore wind energy has a significant potential and for increasing water depths it may be most cost effective to exploit this potential by using floating wind turbines. Many concepts have been suggested but it is not yet ...

Dynamic Response Analysis of an Offshore Wind Turbine

Li, Yu (Master thesis, 2011)

The offshore wind power is an attractive renewable energy resource. To improve the wind power generation capacity, there is a strong desire for offshore wind turbine to go to deep waters. For offshore fixed wind turbine, ...

Dynamic Response Analysis of Catamaran Installation Vessel During the Mating Process of a Wind Turbine onto a Floating Spar Buoy

Kalathingal Thody, Ramees (Master thesis, 2019)

Present day energy production and consumption techniques are deeply rooted in methods which are unsustainable and therefore cannot be relied upon. Hence, there is an urgent call for an alternative clean and renewable energy ...

Dynamic response analysis of fixed offshore wind turbines

Aasheim, Erlend Eithun (Master thesis, 2009)

Dynamic response analysis of floating wind turbines with emphasis on vertical axis rotors

Cheng, Zhengshun; Moan, Torgeir; Gao, Zhen (Chapter; Peer reviewed, 2016)

Large floating wind turbines are feasible for offshore application. Due to the commercial success onshore and nearshore, floating horizontal axis wind turbines (HAWTs) are now being widely studied. However, floating vertical ...

Dynamic Response Analysis of Three Floating Wind Turbine Concepts with a Two-Bladed Darrieus Rotor

Cheng, Zhengshun; Wang, Kai; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2015)

Recently, interest in the development of floating vertical axis wind turbines (FVAWTs) has been increasing, since FVAWTs might prove to be one of the optimal configurations in deep waters. In this study, a FVAWT with a 5 ...

Dynamic Response Analysis of Wind Turbine Structure to Turbulent Wind Load: Comparative Assessment in Time and Frequency Domains

Kelele, Hailay Kiros (Peer reviewed; Journal article, 2023)

This study investigates wind turbine structural dynamics using stochastic analysis and computational methods in both the time and frequency domains. Simulations and experiments are utilized to evaluate the dynamic response ...

Dynamic Response Analysis of a Spar Type Floating Wind Turbine

Solberg, Thomas (Master thesis, 2011)

Wind power is a large natural source for renewable energy, and many countries have shown interest in establishing floating offshore wind parks. There are many advantages with floating offshore wind turbines, but also many ...

Dynamic Response and Fatigue of Offshore Wind Turbines - Effect of Foundation Type and Modelling Method Using Software FAST

Løken, Ingrid Bye (Master thesis, 2017)

This thesis presents dynamic response and fatigue analyses of several bottom-mounted offshore wind turbine models, simulated in the aero-hydro-servo-elastic simulation tool FAST v8. A 5 MW offshore wind turbine supported ...

Dynamic response characteristics of the 67-type railway pontoon bridge

Zhao, Cunbao; Jiang, Zhongming; Leira, Bernt Johan; Shi, Xuzhao; Zheng, Zhaofeng (Peer reviewed; Journal article, 2022)

In China at present, the 67-type railway pontoon bridge is part of the main reserve standard equipment that can be utilized for traffic emergency of cross-river bridges. Based on the potential flow theory and boundary ...

Dynamic Response of a Floating Bridge Structure

Viuff, Thomas; Leira, Bernt Johan; Øiseth, Ole; Xiang, Xu (Chapter; Peer reviewed, 2016)

A theoretical overview of the stochastic dynamic analysis of a floating bridge structure is presented. Emphasis is on the wave-induced response and the waves on the sea surface are idealized as a zero mean stationary ...

Dynamic Response of A Large-Diameter Monopile Considering 35-Hour Storm Conditions

Bachynski, Erin Elizabeth; Page, Ana M.; Katsikogiannis, George (Journal article; Peer reviewed, 2019)

As a part of the assessment of foundation resistance for monopiles, several offshore wind standards prescribe symmetric 35-hour (or 42-hour) storm sequences in terms of wind speed and significant wave height. The temporal ...

Dynamic response of a monopile wind turbine in waves: Experimental uncertainty analysis for validation of numerical tools

Bachynski, Erin Elizabeth; Thys, Maxime; Delhaye, Virgile Roger (Journal article; Peer reviewed, 2019)

The responses of a monopile offshore wind turbine subjected to irregular wave loads are investigated numerically and experimentally, considering a range of sea states. An extensive experimental campaign was carried out on ...