TY - GEN
T1 - Hydrodynamic performance of an innovative semisubmersible platform with twin wind turbines
AU - Elobeid, Mujahid
AU - Tao, Longbin
AU - Ingram, David
AU - Pillai, Ajit C.
AU - Mayorga, Pedro
AU - Hanssen, Jan Erik
N1 - Funding Information:
This work was partially funded by the Engineering and Physical Sciences Research Council (EPSRC, UK) projects: Extreme Loading on FOWT under Complex Environmental Conditions (EP/T004150/1), A CCP on Wave Structure Interaction: CCP-WSI (EP/M022382/1) and the Supergen ORE Hub Flexible Fund project: Passive Control of Wave Induced Platform Motions for Semi-submersible FOWTs. The authors would like to acknowledge for the use of the HEC cluster in University of Lancaster for this study.
Publisher Copyright:
© 2022 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 2022/10/13
Y1 - 2022/10/13
N2 - The deployment of offshore wind turbines has focused primarily on shallow seas (such as the North Sea, Chinese coastal waters, and the New England coast) using bottom fixed foundations. However, much of the world s offshore wind resource lies in deeper waters where bottom-fixed foundations are not suitable, and floating platforms must be utilised. To date, the majority of floating concepts have been developed to support a single wind turbine. This leads to a high capital cost for each individual platform and consequently a high levelised cost of energy. The W2Power platform (developed by EnerOcean S.L, Spain) currently supports a pair of 6 MW wind turbines on outward-leaning towers. The design significantly reduces the cost per installed MW, increases the structure s natural period, added mass, and radiation damping. The platform, patented in 2009, was the world s first twin-Turbine platform and the first to be demonstrated at sea (2019). This paper presents the hydrodynamics of a 1:40 scale model of the W2Power platform using the well-known OrcaFlex software. The analysis has been carried out under extreme and operational conditions, and the resulting hydrodynamic loads and motion response are presented. The mooring system was found to be sensitive to wave direction, particularly when propagating along the current direction. Furthermore, the results showed advantages in the hydrodynamic responses for the W2Power platform as an innovative floating system.
AB - The deployment of offshore wind turbines has focused primarily on shallow seas (such as the North Sea, Chinese coastal waters, and the New England coast) using bottom fixed foundations. However, much of the world s offshore wind resource lies in deeper waters where bottom-fixed foundations are not suitable, and floating platforms must be utilised. To date, the majority of floating concepts have been developed to support a single wind turbine. This leads to a high capital cost for each individual platform and consequently a high levelised cost of energy. The W2Power platform (developed by EnerOcean S.L, Spain) currently supports a pair of 6 MW wind turbines on outward-leaning towers. The design significantly reduces the cost per installed MW, increases the structure s natural period, added mass, and radiation damping. The platform, patented in 2009, was the world s first twin-Turbine platform and the first to be demonstrated at sea (2019). This paper presents the hydrodynamics of a 1:40 scale model of the W2Power platform using the well-known OrcaFlex software. The analysis has been carried out under extreme and operational conditions, and the resulting hydrodynamic loads and motion response are presented. The mooring system was found to be sensitive to wave direction, particularly when propagating along the current direction. Furthermore, the results showed advantages in the hydrodynamic responses for the W2Power platform as an innovative floating system.
KW - coupled analysis
KW - FOWT
KW - mooring dynamics
KW - MUFOP
KW - semisubmersible
U2 - 10.1115/OMAE2022-79248
DO - 10.1115/OMAE2022-79248
M3 - Conference contribution
AN - SCOPUS:85140825144
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
BT - International Conference on Ocean, Offshore and Arctic Engineering
PB - American Society of Mechanical Engineers(ASME)
T2 - ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022
Y2 - 5 June 2022 through 10 June 2022
ER -