Ocean Systems Engineering

  • 제14권3호
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  • Pages.261-276
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  • 2024
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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Parametric investigation involving response reduction for a semi-submersible floater with shape alteration, stepping, and tilting of columns and pontoons

  • Anand B. Vishnu (Department of Civil Engineering, NIT Calicut) ;
  • Abdul M. Akbar (Department of Civil Engineering, NIT Calicut)
  • 투고 : 2024.04.20
  • 심사 : 2024.09.10
  • 발행 : 2024.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

Numerical investigation was carried out to analyze the hydrodynamic response of 4-column semi-submersible floaters, incorporating variations such as stepping and alterations in the shape/geometry of columns and pontoons, as well as tilting of main columns. Utilizing Ansys-AQWA, a hydrodynamic software based on panel method, simulations were executed for these scenarios. The simulations yielded insights into responses, excitation forces/moments, and pressure on the structure, facilitating a comparison between the models through a parametric study. It was observed that stepping of pontoons and tilting of columns led to reduced responses, forces, and pressures, reaching balance through appropriate stepping and tilting. Additionally, altering the geometry of columns and pontoons indicated the potential benefits of employing elliptical pontoons and pentagonal columns for enhanced response control.

키워드

과제정보

The stipend provided to the first author by the Ministry of Education, Government of India for pursuing full-time M.Tech is gratefully acknowledged.

참고문헌

  1. Domala, V., Ranjeet, M. and Sharma, R. (2014), "A note on effect of geometric dimensions, shape and arrangement of columns and pontoons on heave and pitch response of semi-submersible", In 2014 Oceans-St. John's, 1-10. IEEE. https://doi.org/10.1109/OCEANS.2014.7003061.
  2. Global Offshore Wind Report 2023. https://gwec.net/wp-content/uploads/2023/08/GWEC-Global-Offshore-Wind-Report-2023.pdf.
  3. Jonkman, J.M. (2009), "Dynamics of offshore floating wind turbines-model development and verification", Wind Energy: An International Journal for Progress and Applications in Wind Power Conversion Technology, 12(5), 459-492. https://doi.org/10.1002/we.347.
  4. Liu, Z., Zhou, Q., Tu, Y., Wang, W. and Hua, X. (2019), "Proposal of a novel semi-submersible floating wind turbine platform composed of inclined columns and multi-segmented mooring lines", Energies, 12(9), 1809. https://doi.org/10.3390/en12091809.
  5. Ma, Y., Hu, C., Zhou, B., Li, L. and Kang, Y. (2019), "Hydrodynamic analysis of a semi-submersible wind-tidal combined power generation device", J. Mar. Sci. Appl., 18, 72-81.https://doi.org/10.1007/s11804-019-00073-x.
  6. Otter, A., Murphy, J., Pakrashi, V., Robertson, A. and Desmond, C. (2022), "A review of modelling techniques for floating offshore wind turbines", Wind Energy, 25(5), 831-857. https://doi.org/10.1002/we.2701.
  7. Rajeswari, K. and Nallayarasu, S. (2021), "Hydrodynamic response of three-and four-column semi-submersibles supporting a wind turbine in regular and random waves", Ships Offshore Struct., 16(10), 1050-1060. https://doi.org/10.1080/17445302.2020.1806681.
  8. Rajeswari, K. and Nallayarasu, S. (2022), "Experimental and numerical investigation on the suitability of semi-submersible floaters to support vertical axis wind turbine", Ships Offshore Struct., 17(8), 1743-1754. https://doi.org/10.1080/17445302.2021.1938800.
  9. Sethuraman, L. and Venugopal, V. (2013), "Hydrodynamic response of a stepped-spar floating wind turbine: Numerical modelling and tank testing", Renew. Energ., 52, 160-174. https://doi.org/10.1016/j.renene.2012.09.063.
  10. Shokouhian, M., Head, M., Seo, J., Schaffer, W. and Adams, G. (2021), "Hydrodynamic response of a semi-submersible platform to support a wind turbine", J. Mar. Eng. Technol., 20(3), 170-185. https://doi.org/10.1080/20464177.2019.1571662.
  11. Subbulakshmi, A., Verma, M., Keerthana, M., Sasmal, S., Harikrishna, P. and Kapuria, S. (2022), "Recent advances in experimental and numerical methods for dynamic analysis of floating offshore wind turbines-An integrated review", Renew. Sustain. Energ. Rev., 164, 112525. https://doi.org/10.1016/j.rser.2022.112525.
  12. Zhang, H., Wang, H., Cai, X., Xie, J., Wang, Y. and Zhang, N. (2022), "Research on the dynamic performance of a novel floating offshore wind turbine considering the fully-coupled-effect of the system", J. Mar. Sci. Eng., 10(3), 341. https://doi.org/10.3390/jmse10030341.