Modular floating structures (MFS) for offshore dwelling a hydrodynamic analysis in the frequency domain

Wang, Gil; Drimer, Nitai; Goldfeld, Yiska

doi:10.1016/j.oceaneng.2020.107996

Cited by 16 publications

(4 citation statements)

References 27 publications

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“…For FBs having large length to the wavelength 188 ratios, fluid can be assumed to be incompress-189 ible, inviscid and irrotational. It should be noted 190 that for very large offshore/shore platforms, in 191 which Reynolds number is high, the viscosity ef-192 fect can be neglected compared to the inertial ef-193 fect and so the fluid can be assumed irrotational 194 (Gesraha (2006);Deng et al (2019b); Ghafari and 195 Dardel (2018); Wang et al (2020)). Furthermore, 196 boundary layer behaviour, hence its separation, 197 is not the main interest in this study.…”

Section: Methods 187mentioning

confidence: 99%

Diffraction waves on general two-legged rectangular floating breakwaters

Masoudi

Gan

2021

Ocean Engineering

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Section: Methods 187mentioning

confidence: 99%

Diffraction waves on general two-legged rectangular floating breakwaters

Masoudi

Gan

2021

Ocean Engineering

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“…Zhang et al [23] systematically investigated the influence of module number, external constraint, and internal hinge on the motion of the array. The study by Wang et al [24] indicates that modular floating structures can effectively attenuate incident waves when the wave has a short period. In addition, the action mechanism of the current load is similar to that of the wind load, but the presence of the current will affect the characteristics of the wave load.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Characteristics of Floating Photovoltaic Systems under Ocean Loads

Song,

Imani,

Yue

et al. 2023

JMSE

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The floating photovoltaic (FPV) array, which consists of tens or hundreds of rows of floating photovoltaic systems, exhibits great economic and environmental benefits. An FPV array arranged in the ocean will be subjected to the combined action of wind, waves, and currents during the installation, service, and maintenance processes; however, systematic research in this field is still lacking. As a representative of the FPV array, this study on the hydrodynamic characteristics of a single-row FPV system is a fundamental prerequisite for the safe design of large-scale FPV arrays in the near future. In this paper, based on the potential theory, a numerical model of a single-row FPV system with ten floating platforms is established with ANSYS-AQWA software. Following this, the hydrodynamic coefficients of a single floating platform are calculated and evaluated. After that, the dynamic responses of the FPV system under different load combinations are explored. Finally, the influence mechanism of wave parameters on the hydrodynamic characteristics of the FPV system is discussed in detail, including the wavelength and wave height. The results indicate that, within the scope of this study, the floating platforms have good seakeeping and stability. The wave load dominates for all conditions, and the presence of the current will affect the parameters of the wave. In addition, the relative relationship between the wavelength and the length of FPV system will affect their resonance effect, and the increase in wave height will significantly enhance the dynamic response of the FPV system. This study can help to provide references for the safety design of FPV arrays.

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“…The breakwater is one of the most effective ways to reduce the transmitted wave energy. Wang et al [16] carried out a hydrodynamic analysis for the MFS, which was simulated in open and sheltered waters, respectively. The results indicated that the motion responses of each module are less affected by short-wave periods, and the floating breakwater can effectively improve the stability of the MFS in open waters.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Analysis of a Novel Modular Floating Structure System Integrated with Floating Artificial Reefs and Wave Energy Converters

Ren

et al. 2022

JMSE

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A novel modular floating structure (MFS) system moored by tension legs was proposed, which is composed of hexagonal floating modules, floating artificial reefs and wave energy converters (WECs). The integration of floating artificial reefs and WECs into the MFS can improve the marine environment and produce considerable electricity. The effects of both wave characteristics and the module quantity on the hydrodynamic responses of the MFS system were studied in depth, based on a time-domain numerical model. Both the modules’ hydrodynamic interaction effect and the connectors’ mechanical coupling effect were considered. The results indicate that floating artificial reefs combined with WECs can effectively reduce wave loads and convert wave energy into electricity for the MFS system. More modules involved in the MFS system could significantly reduce motion response and produced more wave energy output, which indicates that the MFS system is suitable for large-scale expansion. The effect of different power take-off (PTO) damping coefficients on the WECs’ performance was further investigated, and the optimal damping coefficient was recommended for the MFS system. Finally, the main extreme responses of the MFS system were further investigated, and its safety was checked thoroughly. One survival strategy was proposed, which could efficiently reduce extreme connector loads by more than 50%.

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Modular floating structures (MFS) for offshore dwelling a hydrodynamic analysis in the frequency domain

Cited by 16 publications

References 27 publications

Diffraction waves on general two-legged rectangular floating breakwaters

Diffraction waves on general two-legged rectangular floating breakwaters

Hydrodynamic Characteristics of Floating Photovoltaic Systems under Ocean Loads

Hydrodynamic Analysis of a Novel Modular Floating Structure System Integrated with Floating Artificial Reefs and Wave Energy Converters

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