Hybrid joining of jacket structures for offshore wind turbines – Validation under static and dynamic loading at medium and large scale

2021 ◽  
pp. 113595
Author(s):  
M. Albiez ◽  
J. Damm ◽  
T. Ummenhofer ◽  
H. Ehard ◽  
C. Schuler ◽  
...  
Keyword(s):  
Dynamic Loading ◽  
Wind Turbines ◽  
Large Scale ◽  
Offshore Wind ◽  
Hybrid Joining ◽  
Offshore Wind Turbines ◽  
Jacket Structures ◽  
Static And Dynamic Loading

Static and dynamic loading behavior of a hybrid foundation for offshore wind turbines

2020 ◽  
Vol 71 ◽  
pp. 102727 ◽  
Author(s):  
Da Chen ◽  
Peng Gao ◽  
Shanshan Huang ◽  
Chousheng Li ◽  
Xiangang Yu
Keyword(s):  
Dynamic Loading ◽  
Wind Turbines ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Hybrid Foundation ◽  
Static And Dynamic Loading

Development of a CFD-CSD Coupling Technique for Large Scale Offshore Wind Turbines

2020 ◽  
Author(s):  
Auraluck Pichitkul ◽  
Lakshmi N. Sankar
Keyword(s):  
Fluid Dynamics ◽  
Renewable Energy ◽  
Wind Turbines ◽  
Large Scale ◽  
Time History ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Renewable Energy Resources ◽  
Aerodynamic Loads ◽  
Offshore Wind Turbines

Abstract Wind engineering technology has been continuously investigated and developed over the past several decades in response to steadily growing demand for renewable energy resources, in order to meet the increased demand for power production, fixed and floating platforms with different mooring configurations have been fielded, accommodating large-scale offshore wind turbines in deep water areas. In this study, the aerodynamic loads on such systems are modeled using a computational structural dynamics solver called OpenFAST developed by National Renewable Energy Laboratory, coupled to an in-house computational fluid dynamics solver called GT-Hybrid. Coupling of the structural/aerodynamic motion time history with the CFD analysis is done using an open File I/O process. At this writing, only a one-way coupling has been attempted, feeding the blade motion and structural deformations from OpenFAST into the fluid dynamics analysis. The sectional aerodynamic loads for a large scale 5 MW offshore wind turbine are presented, and compared against the baseline OpenFAST simulations with classical blade element-momentum theory. Encouraging agreement has been observed.

scholarly journals On gradient-based optimization of jacket structures for offshore wind turbines

Wind Energy ◽  
2018 ◽  
Vol 21 (11) ◽  
pp. 953-967 ◽  
Author(s):  
Jacob Oest ◽  
Kasper Sandal ◽  
Sebastian Schafhirt ◽  
Lars Einar S. Stieng ◽  
Michael Muskulus
Keyword(s):  
Wind Turbines ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Jacket Structures ◽  
Gradient Based

Development of a technology type factor for jacket structures for offshore wind turbines in Rhode Island

2012 ◽  
Vol 4 (6) ◽  
pp. 063120 ◽  
Author(s):  
Jonas Hensel ◽  
M. S. Ravi Sharma ◽  
Christopher D. P. Baxter ◽  
Sau-Lon James Hu
Keyword(s):  
Rhode Island ◽  
Wind Turbines ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Jacket Structures ◽  
Type Factor ◽  
Technology Type

Research on the influence of large scale offshore wind turbines integrated into Jiangsu power system

2021 ◽  
Author(s):  
C. Hui ◽  
P. Zhuyi ◽  
Z. Xingyu ◽  
X. Zhenjian ◽  
X. Sixuan ◽  
...  
Keyword(s):  
Power System ◽  
Wind Turbines ◽  
Large Scale ◽  
Offshore Wind ◽  
Offshore Wind Turbines

scholarly journals A Coupled CFD/Multibody Dynamics Analysis Tool for Offshore Wind Turbines With Aeroelastic Blades

2017 ◽  
Author(s):  
Yuanchuan Liu ◽  
Qing Xiao ◽  
Atilla Incecik
Keyword(s):  
Wind Turbine ◽  
Multibody Dynamics ◽  
Wind Turbines ◽  
Large Scale ◽  
Turbine Blades ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Analysis Tool ◽  
Dynamics Analysis ◽  
Offshore Wind Turbines

Aero-elasticity is an important issue for modern large scale offshore wind turbines with long slender blades. The behaviour of deformable turbine blades influences the structure stress and thus the sustainability of blades under large unsteady wind loads. In this paper, we present a fully coupled CFD/MultiBody Dynamics analysis tool to examine this problem. The fluid flow around the turbine is solved using a high-fidelity CFD method while the structural dynamics of flexible blades is predicted using an open source code MBDyn, in which the flexible blades are modelled via a series of beam elements. Firstly, a flexible cantilever beam is simulated to verify the developed tool. The NREL 5 MW offshore wind turbine is then studied with both rigid and flexible blades to analyse the aero-elastic influence on the wind turbine structural response and aerodynamic performance. Comparison is also made against the publicly available data.

scholarly journals Seismic Design of Offshore Wind Turbines: Good, Bad and Unknowns

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3496
Author(s):  
Subhamoy Bhattacharya ◽  
Suryakanta Biswal ◽  
Muhammed Aleem ◽  
Sadra Amani ◽  
Athul Prabhakaran ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Large Scale ◽  
Wind Farms ◽  
Offshore Wind ◽  
Future Research ◽  
Offshore Wind Farms ◽  
Analysis And Design ◽  
Offshore Wind Turbines ◽  
Floating Systems

Large scale offshore wind farms are relatively new infrastructures and are being deployed in regions prone to earthquakes. Offshore wind farms comprise of both offshore wind turbines (OWTs) and balance of plants (BOP) facilities, such as inter-array and export cables, grid connection etc. An OWT structure can be either grounded systems (rigidly anchored to the seabed) or floating systems (with tension legs or catenary cables). OWTs are dynamically-sensitive structures made of a long slender tower with a top-heavy mass, known as Nacelle, to which a heavy rotating mass (hub and blades) is attached. These structures, apart from the variable environmental wind and wave loads, may also be subjected to earthquake related hazards in seismic zones. The earthquake hazards that can affect offshore wind farm are fault displacement, seismic shaking, subsurface liquefaction, submarine landslides, tsunami effects and a combination thereof. Procedures for seismic designing OWTs are not explicitly mentioned in current codes of practice. The aim of the paper is to discuss the seismic related challenges in the analysis and design of offshore wind farms and wind turbine structures. Different types of grounded and floating systems are considered to evaluate the seismic related effects. However, emphasis is provided on Tension Leg Platform (TLP) type floating wind turbine. Future research needs are also identified.

Sign in / Sign up

Export Citation Format

Share Document