Details
| Original language | English |
|---|---|
| Pages (from-to) | 10-22 |
| Number of pages | 13 |
| Journal | Ocean engineering |
| Volume | 180 |
| Early online date | 6 Apr 2019 |
| Publication status | Published - 15 May 2019 |
Abstract
The misalignment of wind and waves is of special interest for various engineering applications, i.e. for structural fatigue load analyses, for work vessel operations for offshore construction or maintenance, and for floating wind turbines. In addition to the normal or frequent boundary conditions, the combination of extreme loads and their directions is essential for coastal and offshore designs. These aspects are addressed by analyzing ten years of field measurements in the German Bight of the North Sea, which is intensively used for offshore wind energy production. This paper focuses on the occurrence and amount of wind and wave misalignment as well as the direction dependency of the wind-wave correlation for normal conditions and extreme storms. Subsequently, the influence of statistical distribution functions for the estimation of extreme wind and wave values is presented. Based on these results, a method is developed to combine direction dependent extreme wind and wave incidents for return periods of several decades.
Keywords
- Combination factor, Extreme values, Storm incidents, Wind-wave correlation, Wind-wave misalignment
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Engineering
- Engineering(all)
- Ocean Engineering
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In: Ocean engineering, Vol. 180, 15.05.2019, p. 10-22.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Wind-wave misalignment and a combination method for direction-dependent extreme incidents
AU - Hildebrandt, Arndt
AU - Schmidt, Boso
AU - Marx, Steffen
N1 - Funding Information: The presented analyses are partially embedded in investigations in the projects Correlation and direction dependence of extreme load parameters in the German Bight ( HA 7436/1-1 ), funded by the Deutsche Forschungsgemeinschaft (DFG) and GIGAWIND life , funded by the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety (BMUB) . The authors thank the funding providers and the Federal Maritime and Hydrographic Agency (BSH) for providing the measurement data.
PY - 2019/5/15
Y1 - 2019/5/15
N2 - The misalignment of wind and waves is of special interest for various engineering applications, i.e. for structural fatigue load analyses, for work vessel operations for offshore construction or maintenance, and for floating wind turbines. In addition to the normal or frequent boundary conditions, the combination of extreme loads and their directions is essential for coastal and offshore designs. These aspects are addressed by analyzing ten years of field measurements in the German Bight of the North Sea, which is intensively used for offshore wind energy production. This paper focuses on the occurrence and amount of wind and wave misalignment as well as the direction dependency of the wind-wave correlation for normal conditions and extreme storms. Subsequently, the influence of statistical distribution functions for the estimation of extreme wind and wave values is presented. Based on these results, a method is developed to combine direction dependent extreme wind and wave incidents for return periods of several decades.
AB - The misalignment of wind and waves is of special interest for various engineering applications, i.e. for structural fatigue load analyses, for work vessel operations for offshore construction or maintenance, and for floating wind turbines. In addition to the normal or frequent boundary conditions, the combination of extreme loads and their directions is essential for coastal and offshore designs. These aspects are addressed by analyzing ten years of field measurements in the German Bight of the North Sea, which is intensively used for offshore wind energy production. This paper focuses on the occurrence and amount of wind and wave misalignment as well as the direction dependency of the wind-wave correlation for normal conditions and extreme storms. Subsequently, the influence of statistical distribution functions for the estimation of extreme wind and wave values is presented. Based on these results, a method is developed to combine direction dependent extreme wind and wave incidents for return periods of several decades.
KW - Combination factor
KW - Extreme values
KW - Storm incidents
KW - Wind-wave correlation
KW - Wind-wave misalignment
UR - http://www.scopus.com/inward/record.url?scp=85064191272&partnerID=8YFLogxK
U2 - 10.1016/j.oceaneng.2019.03.034
DO - 10.1016/j.oceaneng.2019.03.034
M3 - Article
AN - SCOPUS:85064191272
VL - 180
SP - 10
EP - 22
JO - Ocean engineering
JF - Ocean engineering
SN - 0029-8018
ER -