Numerical modeling of sediment scouring phenomenon around the offshore wind turbine pile in marine environment

2018 ◽  
Vol 77 (23) ◽  
Author(s):  
O. Aminoroayaie Yamini ◽  
S. Hooman Mousavi ◽  
M. R. Kavianpour ◽  
Azin Movahedi
Keyword(s):  
Numerical Modeling ◽  
Wind Turbine ◽  
Marine Environment ◽  
Offshore Wind ◽  
Offshore Wind Turbine

scholarly journals Scour Protections for Offshore Foundations of Marine Energy Harvesting Technologies: A Review

2021 ◽  
Vol 9 (3) ◽  
pp. 297
Author(s):  
Tiago Fazeres-Ferradosa ◽  
João Chambel ◽  
Francisco Taveira-Pinto ◽  
Paulo Rosa-Santos ◽  
Francisco V. C. Taveira Pinto ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
Marine Environment ◽  
Professional Community ◽  
Tidal Energy ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Limit States ◽  
Commercial Development ◽  
Marine Renewable Energy

The offshore wind is the sector of marine renewable energy with the highest commercial development at present. The margin to optimise offshore wind foundations is considerable, thus attracting both the scientific and the industrial community. Due to the complexity of the marine environment, the foundation of an offshore wind turbine represents a considerable portion of the overall investment. An important part of the foundation’s costs relates to the scour protections, which prevent scour effects that can lead the structure to reach the ultimate and service limit states. Presently, the advances in scour protections design and its optimisation for marine environments face many challenges, and the latest findings are often bounded by stakeholder’s strict confidential policies. Therefore, this paper provides a broad overview of the latest improvements acquired on this topic, which would otherwise be difficult to obtain by the scientific and general professional community. In addition, this paper summarises the key challenges and recent advances related to offshore wind turbine scour protections. Knowledge gaps, recent findings and prospective research goals are critically analysed, including the study of potential synergies with other marine renewable energy technologies, as wave and tidal energy. This research shows that scour protections are a field of study quite challenging and still with numerous questions to be answered. Thus, optimisation of scour protections in the marine environment represents a meaningful opportunity to further increase the competitiveness of marine renewable energies.

The Marine Environment Impacts on the Supporting Structure of the Offshore Wind Turbines and Discussions on the Protective Measures

2014 ◽  
Vol 1065-1069 ◽  
pp. 1381-1389
Author(s):  
Yong Xiang Wu ◽  
Hong You Li ◽  
Hong Ming Chi ◽  
Li Yuan Liu ◽  
An Min Cai ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Marine Environment ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Protective Measures ◽  
Offshore Wind Turbines ◽  
Supporting Structure ◽  
Seawater Corrosion ◽  
Negative Factors

Offshore wind turbine supporting structure long term works in the harsh marine environment, suffering from a variety of negative factors such as the seawater corrosion, marine growths, water scour, collision of sea ice and ship, etc.. Through numerical analysis software SACS and ANSYS, the marine environment impacts on the supporting structure and protective measures were put forward. The study found that such adverse environmental factors might easily result in a whole or partial component damage of the foundation support structure, and eventually lead to the reduction of security and durability. Reasonable preventive measures to ensure the security of the offshore wind turbine supporting structure were proposed and theoretical guidance for the design of future offshore foundation was provided.

scholarly journals Research of lightning transient potential on the jacket foundation offshore wind turbines

2019 ◽  
Vol 95 ◽  
pp. 02006 ◽  
Author(s):  
Shiqi Tao ◽  
Ximei Yao ◽  
Bojing Liu ◽  
Xiaoqing Zhang ◽  
Yaowu Wang
Keyword(s):  
Wind Turbine ◽  
Marine Environment ◽  
Wind Turbines ◽  
Efficient Algorithm ◽  
Circuit Model ◽  
Offshore Wind ◽  
Lightning Strike ◽  
Offshore Wind Turbine ◽  
Offshore Wind Turbines ◽  
Tall Structures

Offshore wind turbines are often struck by lightning due to their tall structures and the harsh marine environment. The high transient potential from lightning strike can cause serious damage for the devices of offshore turbines. For analysing the effect of transient potential, a complete transient circuit model is established and an efficient algorithm is also presented to evaluate the circuit parameters of blade, tower, and jacket foundation. On the basis of the circuit model, the transient potential at the different locations of the offshore wind turbine can be carried out during direct lightning strike by PSCAD. Finally, the circuit model is used by a numerical example of an actual Chinese-built offshore wind turbine.

Tank Testing of a New Concept of Floating Offshore Wind Turbine

2013 ◽  
Author(s):  
Marc Le Boulluec ◽  
Jérémy Ohana ◽  
Alexis Martin ◽  
Anne Houmard
Keyword(s):  
Numerical Modeling ◽  
Wind Turbine ◽  
Coupled System ◽  
Production Performance ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Floating Platform ◽  
Offshore Wind Turbines ◽  
Floating Offshore Wind Turbines ◽  
Full Scale Tests

The WINFLO project (Wind turbine with INnovative design for Floating Lightweight Offshore) aims at the development of competitive floating offshore wind turbines, by a consortium of 3 industrial partners (Nass&Wind Industrie, DCNS and Vergnet SA) and 2 scientific partners (IFREMER and ENSTA Bretagne). The design of the floater is an innovative semi-submersible free floating platform with particular aspects. Classical steps toward the assessment of the hydrodynamic and energy production performance include numerical modeling, model scale tank testing and intermediate or full scale tests at sea. The present study describes the wave tank tests including wind generation compared to some numerical modeling results of the coupled system composed of the support floater and the wind turbine.

The effect of the marine environment on the stator insulation system of an offshore wind turbine generator

2015 ◽  
Vol 31 (3) ◽  
pp. 10-17 ◽  
Author(s):  
Xuezhong Liu ◽  
Tianlong Zhang ◽  
Rui Zhang ◽  
Yonggang Bai ◽  
Xiaoxia Ding ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Marine Environment ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Insulation System ◽  
Turbine Generator ◽  
Wind Turbine Generator

Experimental Study for SPAR Type Floating Offshore Wind Turbine With Blade-Pitch Control

2013 ◽  
Author(s):  
Toshiki Chujo ◽  
Yoshimasa Minami ◽  
Tadashi Nimura ◽  
Shigesuke Ishida
Keyword(s):  
Wind Turbine ◽  
Wind Farm ◽  
Offshore Wind ◽  
Scale Model ◽  
Offshore Wind Turbine ◽  
Experimental Proof ◽  
Pitch Control ◽  
Model Experiments ◽  
North Eastern ◽  
North Eastern Part

The experimental proof of the floating wind turbine has been started off Goto Islands in Japan. Furthermore, the project of floating wind farm is afoot off Fukushima Prof. in north eastern part of Japan. It is essential for realization of the floating wind farm to comprehend its safety, electric generating property and motion in waves and wind. The scale model experiments are effective to catch the characteristic of floating wind turbines. Authors have mainly carried out scale model experiments with wind turbine models on SPAR buoy type floaters. The wind turbine models have blade-pitch control mechanism and authors focused attention on the effect of blade-pitch control on both the motion of floater and fluctuation of rotor speed. In this paper, the results of scale model experiments are discussed from the aspect of motion of floater and the effect of blade-pitch control.

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