Numerical validations and investigation of a semi-submersible floating offshore wind turbine platform interacting with ocean waves using an SPH framework

Tagliafierro, Bonaventura; Karimirad, Madjid; Altomare, Corrado; Göteman, Malin; Martínez-Estévez, Iván; Capasso, Salvatore; Domínguez, José M.; Viccione, Giacomo; Gómez-Gesteira, Moncho; Crespo, Alejandro J.C.

doi:10.1016/j.apor.2023.103757

Cited by 16 publications

(1 citation statement)

References 112 publications

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“…Hence, we refer to the overtopping formula proposed by [30] for average overtopping discharge. The formula is represented in Equations ( 8)- (15) and can be expanded further in Equations ( 16)- (17) to obtain the overtopping volume V'=qTm-1,0,o. Actually this is consistent with the scale parameter of the Weibull distribution usually employed to analyse individual overtopping volumes associated to a specific exceedance probability in a random sea state (see, for example: [4,38,39]): the individual overtopping volume is scaled by the mean value of the Weibull distribution, which can be expressed as the product of the mean discharge by the mean wave period, divided by the probability of overtopping waves in a whole random sea storm.…”

Section: Parameter Definition and Scaling Laws In Wave Overtoppingmentioning

confidence: 99%

Characterization of Overtopping Volumes from Focused Wave Groups over Smooth Dikes with Emerged Toe: Insights from Physical Model Tests

Altomare,

Gironella

2024

Preprint

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This research examines the overtopping volumes associated with focused wave groups on smooth dikes with an emerged toe. Focused wave groups are employed to represent the highest waves of random sea states in a compact form, obviating the need to model the entire irregular wave train. The study investigates how overtopping volumes are affected by focus location and phase. Results from 418 experimental tests have been gathered and analyzed. The experiments employed first-order wave generation theory to analyse structural response. Subsequent studies will address the errors induced by this approximation and compare it with second-order wave generation. The experiments simulated extreme wave impacts on an idealised coastal layout, comprising a 1:6.3 foreshore slope and three different dike slopes, including vertical structures, with the initial still water level set below the dike toe. The study employed NewWave theory for generating focused wave groups, aiming to extend recent research on wave overtopping under varied conditions. The results, analysed in both dimensional and non-dimensional forms, indicate that overtopping volumes are significantly influenced by the focus phase. Critical focus locations were identified at a distance of one-third of the deep-water wavelength from the toe.

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Section: Parameter Definition and Scaling Laws In Wave Overtoppingmentioning

confidence: 99%

Characterization of Overtopping Volumes from Focused Wave Groups over Smooth Dikes with Emerged Toe: Insights from Physical Model Tests

Altomare,

Gironella

2024

Preprint

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Optimization Simulation of Mooring System of Floating Offshore Wind Turbine Platform Based on SPH Method

Du,

Jiao,

et al. 2024

Energy Science & Engineering

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In this paper, the Smoothed Particle Hydrodynamics method is used to simulate the dynamic response of the floating offshore wind turbine mooring system in a complex marine environment by using its advantages of dealing with free surface flow and fluid–structure interaction. The single‐cable mooring system and the double‐cable mooring system are introduced into the numerical simulation model of fluid–solid coupling interaction. The first‐order irregular wave and the second‐order regular wave are used to simulate different wave conditions. The operating state of the platform in these two cases is analyzed, and the accurate data such as the velocity change of the geometric center of the platform and the change of six degrees of freedom are obtained. Using visual processing and data analysis, it is found that the optimized double‐cable mooring system structure improves the vibration reduction ability of the platform.

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Understanding wave energy converters dynamics: High-fidelity modeling and validation of a moored floating body

Dell’Edera,

Niosi,

Casalone

et al. 2024

Applied Energy

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Numerical validations and investigation of a semi-submersible floating offshore wind turbine platform interacting with ocean waves using an SPH framework

Cited by 16 publications

References 112 publications

Characterization of Overtopping Volumes from Focused Wave Groups over Smooth Dikes with Emerged Toe: Insights from Physical Model Tests

Characterization of Overtopping Volumes from Focused Wave Groups over Smooth Dikes with Emerged Toe: Insights from Physical Model Tests

Optimization Simulation of Mooring System of Floating Offshore Wind Turbine Platform Based on SPH Method

Understanding wave energy converters dynamics: High-fidelity modeling and validation of a moored floating body

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