DeepCwind semi-submersible floating offshore wind turbine platform with a nonlinear multi-segment catenary mooring line and intermediate buoy

• Autorzy: Motallebi Mohammad , Ghassemi Hassan , Shokouhian Mehdi

Identyfikatory

DOI

10.17402/496

• Języki publikacji: EN

Abstrakty

EN

In this paper, to improve the mechanical behavior of DeepCwind semi-submersible floating offshore wind turbine (FOWT) platform mooring lines, the nonlinear catenary cables of the platform were divided into multi-segment and intermediate buoys. Mathematical formulations of the boundary element method (BEM) governing the dynamics of mooring line systems with buoy devices were described. This study was applied to the OC4-DeepCwind semi-submersible FOWT platform, which is designed for a 200-meter water depth with mooring lines consisting of three catenary steel chain cables at 120° angles to each other. The dynamic response of the multi-segment catenary mooring lines with different buoy radiuses and different positions along the cables was investigated. The full-scale platform was modeled in ANSYS-AQWA software, and the simulations were performed under harsh offshore conditions. The mooring line’s general arrangement, tension, strain and uplift force for different buoy radiuses and their position along the cable are presented and discussed. Moreover, platform motions in three directions (surge, heave, and pitch) were also analyzed. It was concluded that by correctly selecting the buoy volume and position along the cable, the tension of the cable may be reduced by up to 45%. By incorrectly selecting the buoy, the results caused adverse effects.

Słowa kluczowe

EN

semi-submersible floating platform; offshore wind turbine; dynamic response; catenary mooring system; intermediate buoy; strain and tension

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2022
• Tom: nr 69 (141)
• Strony: 20--34
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Motallebi Mohammad

• Amirkabir University of Technology, Tehran, Iran, Department of Civil and Environmental Engineering

• https://orcid.org/0000-0003-2843-1737

autor

Ghassemi Hassan

• Amirkabir University of Technology, Tehran, Iran, Department of Maritime Engineering

• https://orcid.org/0000-0002-6201-346X

autor

Shokouhian Mehdi

• Morgan State University, Department of Civil Engineering, Baltimore, USA

• https://orcid.org/0000-0001-9823-0661

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023).