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Numerical Framework for the Coupled Analysis of Floating Offshore Multi-Wind Turbines
Publicated to:Journal Of Marine Science And Engineering. 12 (1): 85- - 2024-01-01 12(1), DOI: 10.3390/jmse12010085
Authors: Berdugo-Parada, I; Servan-Camas, B; Garcia-Espinosa, J
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Abstract
Floating offshore multi-wind turbines (FOMWTs) are an interesting alternative to the up-scaling of wind turbines. Since this is a novel concept, there are few numerical tools for its coupled dynamic assessment at the present time. In this work, a numerical framework is implemented for the simulation of multi-rotor systems under environmental excitations. It is capable of analyzing a platform using leaning towers that handle wind turbines with their own features and control systems. This tool is obtained by coupling the seakeeping hydrodynamics solver SeaFEM with the single wind turbine simulation tool OpenFAST. The coupling of SeaFEM provides a higher fidelity hydrodynamic solution, allowing the simulation of any structural design using the finite element method (FEM). Additionally, a methodology is proposed for the extension of the single wind solver, allowing for the analysis of multi-rotor configurations. To do so, the solutions of the wind turbines are computed independently using several OpenFAST instances, performing its dynamic interaction through the floater. This method is applied to the single turbine Hywind concept and the twin-turbine W2Power floating platform, supporting NREL 5-MW wind turbines. The rigid-body response amplitude operators (RAOs) are computed and compared with other numerical tools. The results showed consistency in the developed framework. An agreement was also obtained in simulations with aerodynamic loads. This resulting tool is a complete time-domain aero-hydro-servo-elastic solver that is able to compute the combined response and power generation performance of multi-rotor systems.
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Bibliometric impact. Analysis of the contribution and dissemination channel
The work has been published in the journal Journal Of Marine Science And Engineering due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 6/18, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Ocean.
From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 2.12, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)
Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-15, the following number of citations:
- WoS: 3
- Scopus: 5
Impact and social visibility
Leadership analysis of institutional authors
There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (GARCIA ESPINOSA, JULIO) and Last Author (Garcia-Espinosa, J).
the author responsible for correspondence tasks has been GARCIA ESPINOSA, JULIO.