A novel framework for modeling floating offshore wind turbines based on the vector form intrinsic finite element (VFIFE) method

Li, Dongsheng; Li, Xin; Duan, Yuanfeng; Verma, Amrit Shankar

doi:10.1016/j.oceaneng.2022.112221

Cited by 45 publications

(5 citation statements)

References 45 publications

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“…The calculation procedure was called the spectral fatigue analysis, which was proposed in some classification societies for application to ships and offshore units [35][36][37]. The method had been applied to a range of marine structures, such as a jacket platform [38], wind turbines [39][40], floating offshore oil/gas unit [41], etc. The frequency response structural analyses under the design wave, wind, and current based on 100-year metocean data yielded the following conclusions:…”

Section: Discussionmentioning

confidence: 99%

Structural Effects of Mass Distributions in a Floating Photovoltaic Power Plant

Choung

2022

JMSE

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This study deals with a solar photovoltaic demonstration project composed of four types of sub-plants that will be operated in the Saemangeum Seawall coast. The project aimed to investigate the most efficient sub-plant types. Hydrodynamic analyses were undertaken to obtain the loads exerted on the floating photovoltaic power plants on which two kinds of frame structures supported shed- and gable-type photovoltaic panels, producing the four types of sub-plants composed of three floaters. Hydrodynamic interactions between the floaters were considered because floaters were linked with hinge joints. The pressure and acceleration response operator amplitudes were transferred to the finite element analysis model using an in-house code. Because each sub-plant had a different mass and second moments of mass, it was found that huge stresses had been retained in hinge joints. After the masses in the twelve floaters were evenly distributed, the maximum stresses were reduced so that they were less than material yield strengths. There were larger stresses in the POSCO (Pohang Iron and Steel Company) magnesium alloy coating (POSMAC) frames than in the fiber-reinforced plastic (FRP) frames because the POSMAC frame had an open-channel section. It is concluded that weight in each floating unit should be evenly controlled if hinged joints are used to link the floaters.

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Section: Discussionmentioning

confidence: 99%

Structural Effects of Mass Distributions in a Floating Photovoltaic Power Plant

Choung

2022

JMSE

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“…FAST is a time-domain simulation tool that uses time-domain stochastic wind and waves as inputs. Some examples of FAST being used are [ [24] , [25] , [26] ]. FAST has also been benchmarked and compared to other codes in several global code comparison studies where many researchers participated.…”

Section: Methodsmentioning

confidence: 99%

Characterisation of extreme load responses of a 10-MW floating semi-submersible type wind turbine

Xing¹,

Wang²,

Karuvathil³

et al. 2023

Heliyon

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“…The process of going to far‐reaching seas leads to a more complex and extreme marine environment 4 . To better ensure the structural integrity and operational safety of offshore wind turbines during their service life, it is necessary to strengthen the research on the structural performance and coupling mechanism of offshore wind turbines in complex marine environments 5–10 …”

Section: Introductionmentioning

confidence: 99%

“…wind turbines during their service life, it is necessary to strengthen the research on the structural performance and coupling mechanism of offshore wind turbines in complex marine environments. [5][6][7][8][9][10] Physical hydrodynamic model tests are still required in wave tank facilities to calibrate parameters used in the numerical models and evaluate and verify the performance of the current design of offshore wind turbines. Compared with the numerical calculations, offshore wind turbine model tests more accurately reflect the dynamic response behavior of the structure in the wind, wave, and current environments.…”

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confidence: 99%

Study on simulation of real‐time hybrid model test for offshore wind turbines

Wang

et al. 2023

Earthquake Engineering and Resilience

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As an emerging energy source with great potential, offshore wind power is supported by development policies in an increasing number of countries. However, the performance evaluation of floating offshore wind turbine (FOWT) structures is challenging due to the complexity of wind and wave loads and the difficulty in reproducing such loading conditions for downscaled FOWTs in laboratories. In physical model tests of FOWTs, the Froude's similarity law is adopted for the foundation, while the Reynolds similarity law is adopted for the blades, thus there is an issue with uncoordinated scaling laws. The FOWTs real‐time hybrid test uses loading device to simulate air loads, offering a new way to avoid scaling issues and reduce cost barriers. In this study, taking the 5 MW Braceless FOWT as the research object, a conceptual design of a real‐time hybrid model test system for Braceless offshore wind turbines is proposed. Six sets of working conditions are set for simulation to study the motion and force performances of the hybrid system. The performance requirements of the Braceless structure for the loading device in the real‐time hybrid test are quantified. Simulate different errors in the test to analyse the sensitivity of the response of the Braceless offshore wind turbine to various errors. The results show that the Braceless FOWT is relatively sensitive to motion and force errors. Due to the low‐frequency characteristics of offshore wind turbines and external load, the delay error has relatively little effect. The method results in this paper can provide theoretical support and design information support for the implementation of real‐time hybrid model tests in the future.

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A novel framework for modeling floating offshore wind turbines based on the vector form intrinsic finite element (VFIFE) method

Cited by 45 publications

References 45 publications

Structural Effects of Mass Distributions in a Floating Photovoltaic Power Plant

Structural Effects of Mass Distributions in a Floating Photovoltaic Power Plant

Characterisation of extreme load responses of a 10-MW floating semi-submersible type wind turbine

Study on simulation of real‐time hybrid model test for offshore wind turbines

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