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FOWT Stability Study According to Number of Columns Considering Amount of Materials Used

Author

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  • Ho-Seong Yang

    (Department of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, Korea
    Interdisciplinary Major of Ocean Renewable Energy Engineering, Graduate School, Korea Maritime and Ocean University, Busan 49112, Korea)

  • Ali Alkhabbaz

    (Department of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, Korea)

  • Dylan Sheneth Edirisinghe

    (Department of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, Korea
    Interdisciplinary Major of Ocean Renewable Energy Engineering, Graduate School, Korea Maritime and Ocean University, Busan 49112, Korea)

  • Watchara Tongphong

    (Department of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, Korea)

  • Young-Ho Lee

    (Department of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, Korea
    Interdisciplinary Major of Ocean Renewable Energy Engineering, Graduate School, Korea Maritime and Ocean University, Busan 49112, Korea)

Abstract

Considering stability and fabrication cost, 3–4 columns are usually adopted for semi-submersible platform designs. Although increasing the number of columns provides more stability for both floating platform and system as a whole, it is generally not economically viable. In this respect, the present work provides a high-fidelity analysis of semi-submersible platform stability and hydrodynamic response for different design concepts. The number of columns was considered as the main design parameter and was varied from 3–6 columns. The semi-submersible weight was kept constant during the simulation period by changing the column diameter and amount of ballast water. The investigation was carried out using the potential code Orcawave, the results of which were input directly to the engineering tool OrcaFlex. Four different types of semi-submersible platforms with a varying number of columns were tested and compared under extreme environmental conditions in order to ensure their stability and hydrodynamic response. The simulation findings revealed that platform stability was more affected by the geometrical features of the floater than by the number of columns. Furthermore, the number of columns did not have a significant impact on hydrodynamic behavior for the same platform geometry.

Suggested Citation

  • Ho-Seong Yang & Ali Alkhabbaz & Dylan Sheneth Edirisinghe & Watchara Tongphong & Young-Ho Lee, 2022. "FOWT Stability Study According to Number of Columns Considering Amount of Materials Used," Energies, MDPI, vol. 15(5), pages 1-24, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1653-:d:756423
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    References listed on IDEAS

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    1. Johannes Lehmann & Matthias Rillig, 2014. "Distinguishing variability from uncertainty," Nature Climate Change, Nature, vol. 4(3), pages 153-153, March.
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    Cited by:

    1. Ziad Maksassi & Bertrand Garnier & Ahmed Ould El Moctar & Franck Schoefs & Emmanuel Schaeffer, 2022. "Thermal Characterization and Thermal Effect Assessment of Biofouling around a Dynamic Submarine Electrical Cable," Energies, MDPI, vol. 15(9), pages 1-18, April.
    2. Tan, Zhe & Sun, Peng-Nan & Liu, Nian-Nian & Li, Zhe & Lyu, Hong-Guan & Zhu, Rong-Hua, 2023. "SPH simulation and experimental validation of the dynamic response of floating offshore wind turbines in waves," Renewable Energy, Elsevier, vol. 205(C), pages 393-409.

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