Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | Proceedings of ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering |
| Untertitel | Ocean Engineering |
| Seitenumfang | 8 |
| Band | 5A |
| ISBN (elektronisch) | 9780791887820 |
| Publikationsstatus | Veröffentlicht - 2024 |
Abstract
In this experimental study, the incidence of wave diffraction behind monopile foundations and their influence on the motion response of a CTV are investigated. The model tests were conducted in the wave flume Schneiderberg (German: Wellenkanal Schneiderberg, WKS) in a scale of 1/40. The water depth was fixed to 40 m (all following quantities are given in prototype scale). Four sets of tests were conducted: (i) Wave-only tests without vessel or monopile to measure the undisturbed wave, (ii) Vessel-only tests without monopile to measure the reference motion response of the vessel, (iii) monopile-only tests without the vessel to measure the wave field behind the monopile, which will subsequently cause the motion response of the vessel behind the monopile. This is investigated in test set (iv): monopile-vessel tests to measure the motion response of the vessel behind the monopile. Monopiles with different diameters D of 6.4 m, 8 m and 10 m were tested, while the distance between vessel bow and monopile had three fixed values of 10 m, 18 m and 40 m as well. Regular waves with wave periods T between 5 s and 10 s were generated, while the wave height H was set to 1 m, 2 m, and 3 m. The results show that the expected diffraction effects occur behind the monopiles, especially for short period waves and large diameter monopiles, leading to a large diffraction parameter ka. These diffraction effects have a significant influence on the vessel’s motion response. However, further analyses indicate that other hydrodynamic interactions (e.g., vessel’s radiated wave interacts with monopile’s diffracted wave) are important for an accurate prediction of vessel motion during CTV-based maintenance operations. The incorporation of these hydromechanic coupling effects in planning tools as well as real-time systems could lead to an significant increase in technician safety as well as maintenance efficiency.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Meerestechnik
- Energie (insg.)
- Energieanlagenbau und Kraftwerkstechnik
- Ingenieurwesen (insg.)
- Maschinenbau
Ziele für nachhaltige Entwicklung
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- Apa
- Vancouver
- BibTex
- RIS
Proceedings of ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering: Ocean Engineering. Band 5A 2024. v05at06a013.
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - The Influence of Wave Diffraction on the Motion of a Crew Transfer Vessel Behind a Monopile
AU - Meyer, Jannik
AU - Grotebrune, Thilo
AU - Wynants, Mareile
AU - Hildebrandt, Arndt
AU - Schlurmann, Torsten
PY - 2024
Y1 - 2024
N2 - In this experimental study, the incidence of wave diffraction behind monopile foundations and their influence on the motion response of a CTV are investigated. The model tests were conducted in the wave flume Schneiderberg (German: Wellenkanal Schneiderberg, WKS) in a scale of 1/40. The water depth was fixed to 40 m (all following quantities are given in prototype scale). Four sets of tests were conducted: (i) Wave-only tests without vessel or monopile to measure the undisturbed wave, (ii) Vessel-only tests without monopile to measure the reference motion response of the vessel, (iii) monopile-only tests without the vessel to measure the wave field behind the monopile, which will subsequently cause the motion response of the vessel behind the monopile. This is investigated in test set (iv): monopile-vessel tests to measure the motion response of the vessel behind the monopile. Monopiles with different diameters D of 6.4 m, 8 m and 10 m were tested, while the distance between vessel bow and monopile had three fixed values of 10 m, 18 m and 40 m as well. Regular waves with wave periods T between 5 s and 10 s were generated, while the wave height H was set to 1 m, 2 m, and 3 m. The results show that the expected diffraction effects occur behind the monopiles, especially for short period waves and large diameter monopiles, leading to a large diffraction parameter ka. These diffraction effects have a significant influence on the vessel’s motion response. However, further analyses indicate that other hydrodynamic interactions (e.g., vessel’s radiated wave interacts with monopile’s diffracted wave) are important for an accurate prediction of vessel motion during CTV-based maintenance operations. The incorporation of these hydromechanic coupling effects in planning tools as well as real-time systems could lead to an significant increase in technician safety as well as maintenance efficiency.
AB - In this experimental study, the incidence of wave diffraction behind monopile foundations and their influence on the motion response of a CTV are investigated. The model tests were conducted in the wave flume Schneiderberg (German: Wellenkanal Schneiderberg, WKS) in a scale of 1/40. The water depth was fixed to 40 m (all following quantities are given in prototype scale). Four sets of tests were conducted: (i) Wave-only tests without vessel or monopile to measure the undisturbed wave, (ii) Vessel-only tests without monopile to measure the reference motion response of the vessel, (iii) monopile-only tests without the vessel to measure the wave field behind the monopile, which will subsequently cause the motion response of the vessel behind the monopile. This is investigated in test set (iv): monopile-vessel tests to measure the motion response of the vessel behind the monopile. Monopiles with different diameters D of 6.4 m, 8 m and 10 m were tested, while the distance between vessel bow and monopile had three fixed values of 10 m, 18 m and 40 m as well. Regular waves with wave periods T between 5 s and 10 s were generated, while the wave height H was set to 1 m, 2 m, and 3 m. The results show that the expected diffraction effects occur behind the monopiles, especially for short period waves and large diameter monopiles, leading to a large diffraction parameter ka. These diffraction effects have a significant influence on the vessel’s motion response. However, further analyses indicate that other hydrodynamic interactions (e.g., vessel’s radiated wave interacts with monopile’s diffracted wave) are important for an accurate prediction of vessel motion during CTV-based maintenance operations. The incorporation of these hydromechanic coupling effects in planning tools as well as real-time systems could lead to an significant increase in technician safety as well as maintenance efficiency.
KW - crew transfer vessel
KW - Experimental modelling
KW - maintenance
KW - offshore wind turbine
KW - technician safety
UR - http://www.scopus.com/inward/record.url?scp=85210856847&partnerID=8YFLogxK
U2 - 10.1115/omae2024-123620
DO - 10.1115/omae2024-123620
M3 - Conference contribution
VL - 5A
BT - Proceedings of ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering
ER -