Developing the Offshore Energy Future: Purpose-Built Vessels for the Offshore Wind Industry

2008 ◽  
Vol 42 (2) ◽  
pp. 51-52
Author(s):  
Kurt E. Thomsen
Keyword(s):  
Offshore Wind ◽  
Offshore Wind Industry

National Offshore Wind Strategy: Facilitating the Development of the Offshore Wind Industry in the United States

2016 ◽  
Author(s):  
Patrick Gilman ◽  
Ben Maurer ◽  
Luke Feinberg ◽  
Alana Duerr ◽  
Lauren Peterson ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Offshore Wind ◽  
Offshore Wind Industry

Floating Wind Turbine Model Test to Verify a MoorDyn Modification for Nonlinear Elastic Materials

2021 ◽  
pp. 1-41
Author(s):  
William M West ◽  
Andrew J. Goupee ◽  
Christopher Allen ◽  
Anthony M. Viselli
Keyword(s):  
Test Data ◽  
Offshore Wind ◽  
Strain Response ◽  
Design Load ◽  
Jacket Structures ◽  
Scale Test ◽  
Numerical Tools ◽  
Nonlinear Elastic ◽  
Strain Responses ◽  
Offshore Wind Industry

Abstract As the Floating Offshore Wind industry matures it has become increasingly important for researchers to determine the next generation materials and processes that will allow platforms to be deployed in intermediate (50-85 m) water depths which challenge the efficiency of traditional catenary chain mooring systems and fixed-bottom jacket structures. One such technology, synthetic ropes, have in recent years come to the forefront of this effort. The challenge of designing synthetic rope moorings is the complex nonlinear tension-strain response inherent of some rope material choices. Currently, many numerical tools for modeling the dynamic behavior of FOWTs are limited to mooring materials that have a linear tension- strain response. In this paper an open source FOWT design and analysis program, OpenFAST, was modified to capture the more complex tension-strain responses of synthetic ropes. Simulations from the modified OpenFAST tool were then compared with 1:52-scale test data for a 6MW FOWT Semi- submersible platform in 55m of water subjected to representative design load cases. A strong correlation between the simulations and test data was observed.

scholarly journals Musculoskeletal pain among offshore wind industry workers: a cross-sectional study

2020 ◽  
Vol 93 (7) ◽  
pp. 899-909
Author(s):  
Marcial Velasco Garrido ◽  
Janika Mette ◽  
Stefanie Mache ◽  
Volker Harth ◽  
Alexandra M. Preisser
Keyword(s):  
Musculoskeletal Pain ◽  
Cross Sectional Study ◽  
Offshore Wind ◽  
Sectional Study ◽  
Cross Sectional ◽  
Offshore Wind Industry

scholarly journals A Job Task Analysis for Technicians in the Offshore Wind Industry

Work ◽  
2019 ◽  
Vol 63 (4) ◽  
pp. 537-545 ◽  
Author(s):  
Gemma S. Milligan ◽  
Joseph P. O’Halloran ◽  
Michael J. Tipton
Keyword(s):  
Task Analysis ◽  
Offshore Wind ◽  
Offshore Wind Industry ◽  
Job Task

Offshore Wind Foundation Design: Some Key Issues

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
M. Dolores Esteban ◽  
José-Santos López-Gutiérrez ◽  
Vicente Negro ◽  
Clara Matutano ◽  
Francisca M. García-Flores ◽  
...  
Keyword(s):  
Wave Theory ◽  
Offshore Wind ◽  
Wave Load ◽  
Foundation Design ◽  
Key Issues ◽  
Transition Piece ◽  
Structural Uncertainties ◽  
Near Future ◽  
Field Wave ◽  
Offshore Wind Industry

Despite the growth of the offshore wind industry, there are currently doubts relating to the design of wind facilities in the sea. This paper expounds current, already identified structural uncertainties: problems for soil characterization and transition piece (TP) design. This document also introduces new doubts or issues to be researched in the near future in this field (wave theory, scour process, wave load actions, scale difficulty, etc.), not as yet identified due to the scarce experience in the offshore wind industry. With this in mind, technical offshore wind standards related to foundation design have been reviewed.

Research on the Dynamic Response of Floating Foundation of a Tri-Floater Offshore Wind Turbine

2013 ◽  
Vol 275-277 ◽  
pp. 852-855 ◽  
Author(s):  
Zhuang Le Yao ◽  
Chao He Chen ◽  
Yuan Ming Chen
Keyword(s):  
Wind Turbine ◽  
Transfer Functions ◽  
Reference Value ◽  
Element Model ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Wave Load ◽  
Floating Foundation ◽  
Wind Turbine System ◽  
Offshore Wind Industry

In this paper, the overall finite element model is established, to analyze the small-sized floating foundation of a tri-floater and to make a local optimization on the stress concentration area. The transfer functions and the response spectrums of wave load and motion of floating wind turbine system are calculated by AQWA. Besides the concept of the floating foundation group is put forward in this paper. It is small in structure, easy to assemble, and it can be developed for any power of wind field.This concept has a certain reference value for the development of offshore wind industry in China.

scholarly journals Calibration of Design Fatigue Factors for Offshore Wind Turbine Support Structure Based on Fatigue Test Database

2020 ◽  
Author(s):  
Wangwen Zhao ◽  
Wei-Ting Hsu
Keyword(s):  
Probabilistic Models ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Corrosion Condition ◽  
Structural Fatigue ◽  
Multiple Factors ◽  
Fatigue Design ◽  
Test Database ◽  
Current Standards ◽  
Offshore Wind Industry

The concept of Design Fatigue Factors (DFFs) was introduced for providing desired level of safety in structural fatigue design, often associated with damage calculated from S-N curves. Calculation of fatigue damage from S-N curves can be affected by multiple factors, e.g. types of weld class, corrosion condition, loading conditions, stress concentration on different geometries etc. Each of them can be subject to different level of uncertainties. This study intends to recalibrate the DFFs from a detailed reliability analysis by investigating the probabilistic models derived from the database of S-N curves that has been most frequently used in offshore wind industry. The results of such study indicate that the DFFs can be reduced substantially for the corrosive environmental fatigue models from current standards to the same level of target reliability.

scholarly journals An Expert-Driven Probabilistic Assessment of the Safety and Security of Offshore Wind Farms

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5465
Author(s):  
Oscar Hernán Ramírez-Agudelo ◽  
Corinna Köpke ◽  
Yann Guillouet ◽  
Jan Schäfer-Frey ◽  
Evelin Engler ◽  
...  
Keyword(s):  
Probabilistic Model ◽  
Expert Knowledge ◽  
Methodological Approach ◽  
Wind Farms ◽  
Offshore Wind ◽  
Offshore Wind Farms ◽  
Performance Requirements ◽  
Security Challenges ◽  
High Level ◽  
Offshore Wind Industry

Offshore wind farms (OWFs) are important infrastructure which provide an alternative and clean means of energy production worldwide. The offshore wind industry has been continuously growing. Over the years, however, it has become evident that OWFs are facing a variety of safety and security challenges. If not addressed, these issues may hinder their progress. Based on these safety and security goals and on a Bayesian network model, this work presents a methodological approach for structuring and organizing expert knowledge and turning it into a probabilistic model to assess the safety and security of OWFs. This graphical probabilistic model allowed us to create a high-level representation of the safety and security state of a generic OWF. By studying the interrelations between the different functions of the model, and by proposing different scenarios, we determined the impacts that a failing function may have on other functions in this complex system. Finally, this model helped us define the performance requirements of such infrastructure, which should be beneficial for optimizing operation and maintenance.

scholarly journals Simulation of peak tension loads in Subsea power cables during installation

2021 ◽  
Vol 1201 (1) ◽  
pp. 012010
Author(s):  
L Okkerstrøm ◽  
O T Gudmestad ◽  
E Pedersen
Keyword(s):  
Finite Element ◽  
Large Percentage ◽  
Offshore Wind ◽  
Sensitivity Analyses ◽  
Power Cables ◽  
Finite Element Analyses ◽  
Peak Tension ◽  
Dynamic Forces ◽  
Cable Laying ◽  
Offshore Wind Industry

Abstract At present, most of the insurance claims in the offshore wind industry are due to cable failures where a large percentage occurs during the installation of the array and export cables. As the reliability of the cables depends on the location and installation method, it is important to map the risks involved, which can compromise the cable’s integrity in individual projects. This paper presents sensitivity analyses conducted on crucial parameters in the cable laying process, with an objective of successful installation of subsea power cables without any damages to the cable. The analyses focus on the peak tension loads with reference to key parameters as cable self-weight and laying geometry, as well as the cable deployment position on the installation vessel. Finite element analyses were conducted with both static forces and dynamic forces for irregular vessel motions, by the aid of the well-tested software OrcaFlex.

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