Details
| Original language | English |
|---|---|
| Article number | 117432 |
| Journal | Ocean engineering |
| Volume | 302 |
| Issue number | 302 |
| Early online date | 4 Apr 2024 |
| Publication status | E-pub ahead of print - 4 Apr 2024 |
Abstract
The simultaneous impact of a wave field in the diffraction regime and a perpendicular intersecting current on a cylinder reflects a common application case for wave-current-structure interaction with offshore wind turbines in the German North Sea. Although existing literature has thoroughly investigated structural impacts from both waves and currents individually, the complex interplay between both forcings in the near-field of an offshore monopile has not been explored as thoroughly in the past. Only little is understood concerning the resulting nonlinear 3D interaction. This laboratory study evaluates the physical insights of a broad range of wavelength-dependent pile diameters, i.e., 0.14<diameterD/wavelengthL<0.25. The study focuses on surface elevation characteristics, documented either qualitatively using video recordings or quantitatively by surface elevation measurements in close vicinity of the pile. Within the experimental boundaries of this initial study, a current-induced, D/L-dependent asymmetry in crest amplitudes is documented. These distorted diffraction patterns are explained to originate from non-linear wave–current–structure interactions, which are not represented by existing design approaches. The findings further suggest that in this context, secondary load cycle dynamics are of practical relevance to the design and operation of offshore structures.
Keywords
- Water waves, Wave–structure interaction, Wave–current interaction, Diffraction, Secondary load cycle, Water surface elevation
ASJC Scopus subject areas
- Engineering(all)
- Ocean Engineering
- Environmental Science(all)
- Environmental Engineering
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In: Ocean engineering, Vol. 302, No. 302, 117432, 15.06.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Current-distorted wave diffraction patterns in the near-field of a monopile in coastal seas
AU - Wynants, Mareile
AU - Schendel, Alexander
AU - Welzel, Mario
AU - Kerpen, Nils B.
AU - Schlurmann, Torsten
N1 - This research was funded by Deutsche Forschungsgemeinschaft (DFG) in the Collaborative Research Center 1463 “Integrated Design and Operation Methodology for Offshore Megastructures” (SFB1463).
PY - 2024/4/4
Y1 - 2024/4/4
N2 - The simultaneous impact of a wave field in the diffraction regime and a perpendicular intersecting current on a cylinder reflects a common application case for wave-current-structure interaction with offshore wind turbines in the German North Sea. Although existing literature has thoroughly investigated structural impacts from both waves and currents individually, the complex interplay between both forcings in the near-field of an offshore monopile has not been explored as thoroughly in the past. Only little is understood concerning the resulting nonlinear 3D interaction. This laboratory study evaluates the physical insights of a broad range of wavelength-dependent pile diameters, i.e., 0.14
AB - The simultaneous impact of a wave field in the diffraction regime and a perpendicular intersecting current on a cylinder reflects a common application case for wave-current-structure interaction with offshore wind turbines in the German North Sea. Although existing literature has thoroughly investigated structural impacts from both waves and currents individually, the complex interplay between both forcings in the near-field of an offshore monopile has not been explored as thoroughly in the past. Only little is understood concerning the resulting nonlinear 3D interaction. This laboratory study evaluates the physical insights of a broad range of wavelength-dependent pile diameters, i.e., 0.14
KW - Water waves
KW - Wave–structure interaction
KW - Wave–current interaction
KW - Diffraction
KW - Secondary load cycle
KW - Water surface elevation
UR - http://www.scopus.com/inward/record.url?scp=85189360072&partnerID=8YFLogxK
U2 - 10.1016/j.oceaneng.2024.117432
DO - 10.1016/j.oceaneng.2024.117432
M3 - Article
VL - 302
JO - Ocean engineering
JF - Ocean engineering
SN - 0029-8018
IS - 302
M1 - 117432
ER -