Details
| Original language | English |
|---|---|
| Title of host publication | Offshore Technology |
| Publisher | American Society of Mechanical Engineers(ASME) |
| ISBN (electronic) | 9780791887783 |
| Publication status | Published - 9 Aug 2024 |
| Event | 43rd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2024 - Singapore, Singapore Duration: 9 Jun 2024 → 14 Jun 2024 |
Publication series
| Name | Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE |
|---|---|
| Volume | 1 |
Abstract
Amidst the backdrop of the European "Green Deal," mandating climate neutrality by 2050, the expansion of offshore wind energy in the German North Sea gains increasing significance. The projected trend in offshore wind energy turbines (OWTs) towards exceeding 20 MW, with hub heights surpassing 240 m and rotor diameters over 300 m, demands a concomitant shift in substructure design. Jacket-type substructures, tailored for sites with larger water depths, are expected to increase individual pile diameters or overall structural density to bear the new, markedly increased top loads. These Offshore Megastructures present a new approach to traditional slender structures. This study investigates the impact of individual and combined wave and current conditions on a 3-legged jacket-type Offshore Megastructure in a 1/140 scale laboratory study. The structure, a simplified iteration designed to support a > 20 MW OWT, was mounted to a load cell for monitoring integral horizontal loads. Testing encompassed current-only, wave-only, and combined wave-current scenarios in both following and opposing configurations. Reference tests without structure, with a monopile, and tests with the jacket structure oriented at 0°, 15° and 30° were executed. Findings illustrate an influence of both wave steepness and jacket orientation on the integral horizontal forces. This relation changes in dependency of the presence and orientation of a superimposed current for values of wave steepness H/L > 0.01.
Keywords
- Jacket structure, Laboratory, Water Waves, Wave-current interaction, Wave-structure interaction
ASJC Scopus subject areas
- Engineering(all)
- Ocean Engineering
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Mechanical Engineering
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Offshore Technology. American Society of Mechanical Engineers(ASME), 2024. V001T01A015 (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 1).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - The Influence Of Jacket Orientation On Integral Horizontal Forces For A Large 3-Legged Jacket Under Collinear Wave-Current Impact
AU - Wynants, Mareile
AU - Schendel, Alexander
AU - Welzel, Mario
AU - Kerpen, Nils
AU - Schlurmann, Torsten
N1 - Publisher Copyright: Copyright © 2024 by ASME.
PY - 2024/8/9
Y1 - 2024/8/9
N2 - Amidst the backdrop of the European "Green Deal," mandating climate neutrality by 2050, the expansion of offshore wind energy in the German North Sea gains increasing significance. The projected trend in offshore wind energy turbines (OWTs) towards exceeding 20 MW, with hub heights surpassing 240 m and rotor diameters over 300 m, demands a concomitant shift in substructure design. Jacket-type substructures, tailored for sites with larger water depths, are expected to increase individual pile diameters or overall structural density to bear the new, markedly increased top loads. These Offshore Megastructures present a new approach to traditional slender structures. This study investigates the impact of individual and combined wave and current conditions on a 3-legged jacket-type Offshore Megastructure in a 1/140 scale laboratory study. The structure, a simplified iteration designed to support a > 20 MW OWT, was mounted to a load cell for monitoring integral horizontal loads. Testing encompassed current-only, wave-only, and combined wave-current scenarios in both following and opposing configurations. Reference tests without structure, with a monopile, and tests with the jacket structure oriented at 0°, 15° and 30° were executed. Findings illustrate an influence of both wave steepness and jacket orientation on the integral horizontal forces. This relation changes in dependency of the presence and orientation of a superimposed current for values of wave steepness H/L > 0.01.
AB - Amidst the backdrop of the European "Green Deal," mandating climate neutrality by 2050, the expansion of offshore wind energy in the German North Sea gains increasing significance. The projected trend in offshore wind energy turbines (OWTs) towards exceeding 20 MW, with hub heights surpassing 240 m and rotor diameters over 300 m, demands a concomitant shift in substructure design. Jacket-type substructures, tailored for sites with larger water depths, are expected to increase individual pile diameters or overall structural density to bear the new, markedly increased top loads. These Offshore Megastructures present a new approach to traditional slender structures. This study investigates the impact of individual and combined wave and current conditions on a 3-legged jacket-type Offshore Megastructure in a 1/140 scale laboratory study. The structure, a simplified iteration designed to support a > 20 MW OWT, was mounted to a load cell for monitoring integral horizontal loads. Testing encompassed current-only, wave-only, and combined wave-current scenarios in both following and opposing configurations. Reference tests without structure, with a monopile, and tests with the jacket structure oriented at 0°, 15° and 30° were executed. Findings illustrate an influence of both wave steepness and jacket orientation on the integral horizontal forces. This relation changes in dependency of the presence and orientation of a superimposed current for values of wave steepness H/L > 0.01.
KW - Jacket structure
KW - Laboratory
KW - Water Waves
KW - Wave-current interaction
KW - Wave-structure interaction
UR - http://www.scopus.com/inward/record.url?scp=85209888864&partnerID=8YFLogxK
U2 - 10.1115/OMAE2024-125026
DO - 10.1115/OMAE2024-125026
M3 - Conference contribution
AN - SCOPUS:85209888864
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
BT - Offshore Technology
PB - American Society of Mechanical Engineers(ASME)
T2 - 43rd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2024
Y2 - 9 June 2024 through 14 June 2024
ER -