scholarly journals Responses of bats to clear fell harvesting in Sitka Spruce plantations, and implications for wind turbine installation

2017 ◽  
Vol 395 ◽  
pp. 1-8 ◽  
Author(s):  
Lucinda Kirkpatrick ◽  
Isobel F. Oldfield ◽  
Kirsty Park
Keyword(s):  
Wind Turbine ◽  
Sitka Spruce ◽  
Turbine Installation ◽  
Clear Fell

scholarly journals The Wind Power Industry : An Overview, Major Issues and Strategies Adopted with Specific Reference to India

2012 ◽  
pp. 265-272
Author(s):  
Aswini Kumar Dash ◽  
Biswajit Das
Keyword(s):  
Wind Turbine ◽  
Wind Power ◽  
World Wide ◽  
Energy Resource ◽  
Power Industry ◽  
Specific Reference ◽  
Renewable Energy Resource ◽  
The World ◽  
Wind Power Industry ◽  
Turbine Installation

With the increase in awareness about protecting our environment and the support for the cause by all major economies of the world through the Kyoto Protocol, the importance of wind power has grown in stature since it is clean and the most viable renewable energy resource. The global annual market of new wind turbine installation is more than US$ 40 billion at current prices, considering world-wide installations of about 40000 MW annually. This paper reviews the growth of the wind power industry globally as well as in India. The opportunities for investment in this industry and problems associated with it are also discussed with specific reference to India. In the second part of this paper, the business model of two of the major wind turbine manufacturers of India, Suzlon Energy Limited, and Enercon India Limited are discussed and their strategies are compared.

Predicting Wind Loads on the Topside of a Self-Propelled Wind Turbine Installation Jack-Up Using CFD

2021 ◽  
Author(s):  
Zana Sulaiman
Keyword(s):  
Boundary Layer ◽  
Wind Tunnel ◽  
Wind Turbine ◽  
Full Range ◽  
Design Tool ◽  
Wind Loads ◽  
Computational Domain ◽  
Wind Tunnel Tests ◽  
Jack Up ◽  
Turbine Installation

Abstract This paper presents the results of wind load computational fluid dynamics (CFD) calculations performed on the topside structures of a self-propelled wind turbine installation jack-up. The CFD calculations were performed for the jack-up topside structures with and without the deck load. An atmospheric boundary layer profile was applied for the model-scale calculations. The full range of heading angles was considered. The CFD results were validated through comparison with the wind tunnel tests which were carried out at the German-Dutch wind tunnels (DNW) in Marknesse, The Netherlands. Moreover, a comparison is presented between the applied boundary layer profiles throughout the CFD computational domain with those profiles measured in the wind tunnel. The CFD results were found to be in good agreement with the wind tunnel tests for the considered cases, verifying the feasibility of the CFD method as an important design tool for the prediction of wind loads during the design processes of these types of jack-ups.

Lifting Operations with Wind Turbine Installation Jack-Ups Using Real-Time Data

2021 ◽  
Author(s):  
Kayo Vanderheggen ◽  
Joost Janssen ◽  
Nate Meredith
Keyword(s):  
Wind Turbine ◽  
Real Time ◽  
Support System ◽  
High Load ◽  
Full Potential ◽  
Catastrophic Failure ◽  
Time Data ◽  
Real Time Data ◽  
Jack Up ◽  
Turbine Installation

When a wind turbine installation jack-up performs a heavy lifting operation with the crane it affects the loads on the foundation. For these units the crane typically encircles a leg or is positioned close to it. Consequently, that leg attracts most of the loads due to crane operations. For each location jack-ups prove the capacity of the foundation by applying a controlled, high load at each of the footings before commencing operations. This process is known as preloading. The achieved preload at the jack-up’s foundation determines the operational limit. Exceedance of the preload value may result in foundation instability. Depending on the site’s foundation characteristics the consequences of such an exceedance range from negligible to catastrophic failure. GustoMSC has developed Operator Support System (OSS) software with the purpose to make the operator aware of the limitations imposed by the preloaded foundation. The application outlines operational limits based on real-time data from the jack-up, jacking system and crane which enables the operators to safely unlock the full potential of their wind turbine installation jack-up.

Wind Turbine Installation Vessel of a New Generation

2011 ◽  
Author(s):  
Alexei Bereznitski
Keyword(s):  
Wind Turbine ◽  
Design Development ◽  
Active Motion ◽  
New Type ◽  
Hoisting System ◽  
Transit Speed ◽  
Short Time ◽  
New Generation ◽  
Turbine Installation ◽  
Construction Works

A new type of the wind turbine installation vessel is developed. The concept utilizes the Small Waterplane Area Twin Hull (SWATH) vessel. High transit speed, excellent seakeeping, and quick installation sequence allow placing a large number of wind turbines within short time minimizing the time of offshore construction works. The paper deals with the design development of this concept. Such major subjects as seakeeping, model testing in seakeeping tank, wind turbine landing sequence, and the workability are covered in the paper. Special attention will be given to the design of the active motion compensation system applied in the hoisting system. Dynamic behavior of this system is studied. The motions of the vessel are also compensated by dedicated active anti roll and anti-pitch systems. These systems were also tested in a seakeeping tank.

Special Motion Characteristic of Wind Turbine Installation Vessel in Waves

2019 ◽  
Vol 17 (05) ◽  
pp. 1940007
Author(s):  
Ya-Nan Huang ◽  
Wen-Hua Wang ◽  
Jun Liu ◽  
Yan-Ying Wang
Keyword(s):  
Wind Turbine ◽  
Three Dimensional ◽  
Offshore Wind ◽  
Navier Stokes ◽  
Offshore Wind Turbines ◽  
Upper Deck ◽  
Motion Characteristic ◽  
Grid Technique ◽  
Turbulent Models ◽  
Turbine Installation

Wind turbine installation vessel (WTIV) is a kind of special ship that has large upper deck and shallow draft, which is specifically designed for the installation of offshore wind turbines. However, accurately predicting the motion of WTIV is still a challenge. In this paper, computational fluid dynamics (CFD) is adopted to investigate the motion of WTIV under different wave conditions in a three-dimensional numerical wave tank using commercial software Star-CCM+. Reynolds Averaged Navier–Stokes (RANS) equations and [Formula: see text] turbulent models are used for modeling the turbulent flow, and volume of fluid (VOF) method is applied to track the location and shape of transit-free surface. The overset grid technique is taken to handle the fluid–structure interaction (FSI) problem with large motion amplitude. The simulation results have been validated by comparing with the experimental data, and show potential to provide theoretical guidance and technical support for the motion of WTIV in waves.

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