Response of nonlinear offshore spar platform under wave and current

Soeb, Mahmudur Rahman; Islam, A. B. M. Saiful; Jumaat, Mohd Zamin; Huda, Nazmul; Arzu, Farhana

doi:10.1016/j.oceaneng.2017.07.042

Cited by 18 publications

(5 citation statements)

References 16 publications

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“…At the natural period of surge motion, the predicted dynamic responses with the current decrease due to the increase of damping in the surge direction. It is the same as what was mentioned by Soeb et al [12]. On the other hand, the dynamic response of the tension of the upstream mooring line significantly increases due to the existence of the current.…”

Section: Validation Of the Advanved Hydrodynamic Models By The Water ...supporting

confidence: 86%

“…The fatigue life of mooring line was overestimated if the wave-current interaction was neglected. Soeb et al [12] observed that the current loads compressed the oscillation of surge, heave and pitch for a spar-type platform. However, the predicted dynamic responses of the platform and mooring line in these researches were not validated by the experiments and the same drag coefficient was used to predicted currentand wave-induced drag forces.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Response Analysis of a Semi-Submersible Floating Wind Turbine in Combined Wave and Current Conditions Using Advanced Hydrodynamic Models

Ishihara

Liu

2020

Energies

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In this study, advanced hydrodynamic models are proposed to predict dynamic response of a floating offshore wind turbine (FOWT) in combined wave and current conditions and validated by laboratory and full-scale semi-submersible platforms. Firstly, hydrodynamic coefficient models are introduced to evaluate the added mass and drag coefficients in a wide range of Reynolds numbers. An advanced hydrodynamic model is then proposed to calculate the drag force of cylinder in combined wave and current conditions. The proposed model is validated by the water tank tests in the current-only, wave-only and current-wave conditions and is used to investigate the effect of current on the dynamic response of FOWT. Finally, the full-scale semi-submersible platform used in the Fukushima demonstration project is investigated. It is found that the predicted dynamic responses of platform by the proposed hydrodynamic models are improved by the directional spreading function of the sea wave spectrum and show favorable agreement with the field measurement.

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Section: Validation Of the Advanved Hydrodynamic Models By The Water ...supporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Dynamic Response Analysis of a Semi-Submersible Floating Wind Turbine in Combined Wave and Current Conditions Using Advanced Hydrodynamic Models

Ishihara

Liu

2020

Energies

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“…AQWA TM , WAMIT TM , and SESAM TM are examples of these software programs (Zou et al, 2023). Soeb et al (2017) conducted a motion response analysis on a spar platform in ultradeep sea conditions using ABAQUS/AQWA TM . They found a reduction in the motion response of a platform in heave and pitch degrees of freedom due to the current force.…”

Section: Article Highlightsmentioning

confidence: 99%

Integrated System of Semi-submersible Offshore Wind Turbine Foundation and Porous Shells

Yao,

Mayon,

Zhou

et al. 2024

J. Marine. Sci. Appl.

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A novel semi-submersible platform is proposed for 5 MW wind turbines. This concept focuses on an integrated system formed by combining porous shells with a semi-submersible platform. A coupled aerodynamic–hydrodynamic–mooring analysis of the new system is performed. The motion responses of the novel platform system and the traditional platform are compared. The differences in hydrodynamic performance between the two platforms are also evaluated. The influence of the geometric parameters (porosity, diameter, and wall thickness) of porous shells on the motion response behavior of the new system is studied. Overall, the new semi-submersible platform exhibits superior stability in terms of pitch and heave degrees of freedom, demonstrating minimal effects on the motion response in the surge degree of freedom.

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“…Subsequently, due to the formation of cracks, corrosion, or wear and tear, each facility moves into a latent form of an emergency state, corresponding to the period T 1 , inevitably followed by a period T 2 , when the facility moves into a critical emergency state. Finally, the period T 3 begins when an accident occurs and the facility ceases to operate [1,[11][12][13].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of the technology for the spectral noise control of the vibration conditions of offshore platforms

Алиев

Rzayeva

Sattarova

2018

EEJET

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Показано, що при зародженні дефектів настає період переходу морських платформ в аварійний стан. При цьому з'являються перешкоди, що корелюють з корисним сигналом. Пропонуються алгоритми обчислення робастних оцінок спектральних характеристик вібраційних сигналів і технології формування множин інформативних ознак з спектральних оцінок перешкоди Ключові слова: діагностика, перешкода, морські платформи, моніторинг, спектральний аналіз, спектральні характеристики, вібраційні сигнали Показано, что при зарождении дефектов наступает период перехода морских платформ в аварийное состояние. При этом появляются помехи, коррелирующие с полезным сигналом. Предлагаются алгоритмы вычисления робастных оценок спектральных характеристик вибрационных сигналов и технологии формирования множеств информативных признаков из спектральных оценок помехи Ключевые слова: диагностика, помеха, морские платформы, мониторинг, спектральный анализ, спектральные характеристики, вибрационные сигналы

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Response of nonlinear offshore spar platform under wave and current

Cited by 18 publications

References 16 publications

Dynamic Response Analysis of a Semi-Submersible Floating Wind Turbine in Combined Wave and Current Conditions Using Advanced Hydrodynamic Models

Dynamic Response Analysis of a Semi-Submersible Floating Wind Turbine in Combined Wave and Current Conditions Using Advanced Hydrodynamic Models

Integrated System of Semi-submersible Offshore Wind Turbine Foundation and Porous Shells

Development of the technology for the spectral noise control of the vibration conditions of offshore platforms

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