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Author Ganjgani, Arman Aghaei
Affiliation Amirkabir University of Technology, Department of Maritime Engineering Marine and Hydrokinetic Energy Group, Tehran, Iran
E-mail arman.sspp1993@aut.ac.ir
Author Ghassemi, Hassan
Affiliation Amirkabir University of Technology, Department of Maritime Engineering Marine and Hydrokinetic Energy Group, Tehran, Iran
E-mail gasemi@aut.ac.ir
Author Ghiasi, Mahmoud
Affiliation Amirkabir University of Technology, Department of Maritime Engineering Marine and Hydrokinetic Energy Group, Tehran, Iran
E-mail mghiasi@aut.ac.ir
ISSN printed 1733-8670
URI http://repository.scientific-journals.eu/handle/123456789/2719
Abstract This paper investigates the effect of buoys and a clump weight on the mooring lines and the dynamic response of the floating platform. The full-scale of the OC4-DeepCwind semisubmersible FOWT platform is analyzed using the boundary element method (BEM) with ANSYS-AQWA software, when considering regular wave conditions. Platform motions and mooring line tension in the surge, heave, and pitch are presented and discussed in the time domain analyses (TDA) and frequency domain analyses (FDA). Validation is performed by compression of the platform motion RAO and the fairlead tension RAO magnitudes in the surge, heave, and pitch (for both numerical and experimental data) under seven sea states’ regular waves. The results show that increasing the number of buoys at a constant volume decreases the surge and pitch motion amplitude, while the heave motion increases slightly. Adding the buoy and clump weight (type 1) to the mooring line reduces the oscillation amplitude tension. In addition, raising the number of buoys increases the oscillation tension.
Publisher Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie
Keywords DeepCwind platform
Keywords BEM
Keywords buoys
Keywords clump weight
Keywords catenary mooring line
Title Investigation into a hybrid mooring system with hydrodynamic response and mooring tension from a DeepCwind floating wind turbine
Type Original scientific article
References
  1. Barltrop, N.D.P. (Eds.) (1998) Floating Structures – A guide for design and analysis. Volume 1. Energy Institute.
  2. Benassai, G., Campanile, A., Piscopo, V. & Scamardella, A. (2014) Mooring control of semisubmersible structures for wind turbines. Procedia Engineering 70, pp. 132–141, doi: 10.1016/j.proeng.2014.02.016.
  3. Brommundt, M., Krause, L., Merz, K. & Muskulus, M. (2012) Mooring system optimization for floating wind turbines using frequency domain analysis. Energy Procedia 24, pp. 289–296, doi: 10.1016/j.egypro.2012.06.111.
  4. Coulling, A.J., Goupee, A.J., Robertson, A.N., Jonkman, J.M. & Dagher, H.J. (2013) Validation of a FAST semisubmersible floating wind turbine numerical model with DeepCwind test data. Journal of Renewable and Sustainable Energy 5, 023116, doi: 10.1063/1.4796197.
  5. Cummins, W.E. (1962) The impulse response function and ship motions. Schiffstechnik 9, pp. 101–109.
  6. Ghafari, H. & Dardel, M. (2018) Parametric study of catenary mooring system on the dynamic response of the semisubmersible platform. Ocean Engineering 153, 1, pp. 319–332, doi: 10.1016/j.oceaneng.2018.01.093.
  7. Ghafari, H.R., Ketabdari, M.J., Ghassemi, H. &Homayoun, E. (2019) Numerical study on the hydrodynamic interaction between two floating platforms in Caspian Sea environmental conditions. Ocean Engineering 188, 106273, doi: 10.1016/j.oceaneng.2019.106273.
  8. Hall, M. & Goupee, A. (2015) Validation of a lumpedmass mooring line model with DeepCwind semisubmersible model test data. Ocean Engineering 104, pp. 590–603, doi: 10.1016/j.oceaneng.2015.05.035.
  9. Hordvik, T. (2011) Design analysis and optimisation of mooring system for floating wind turbines Student: Open Floating wind turbine Mooring system Optimisation. Master Thesis. Norwegian University of Science and Technology. [Online]. Available: https://core.ac.uk/download/ pdf/52099634.pdf [Accessed: May 14, 2022].
  10. Li, J., Jiang, Y., Tang, Y., Qu, X. & Zhai, J. (2017) Effects of second-order difference-frequency wave forces on floating wind turbine under survival condition. Transactions of Tianjin University 23, pp. 130–137, doi: 10.1007/s12209- 017-0037-2.
  11. . Liu, Z., Tu, Y., Wang, W. & Qian, G. (2019) Numerical analysis of a catenary mooring system attached by clump masses for improving the wave-resistance ability of a spar buoy-type floating offshore wind turbine. Applied Science 9, 1075, doi: 10.3390/app9061075.
  12. 2. Mavrakos, S.A. & Chatjigeorgiou, J. (1997) Dynamic behaviour of deep water mooring lines with submerged buoys. Computers & Structures 64, pp. 819–835, doi: 10.1016/ S0045-7949(96)00169-1.
  13. Mavrakos, S.A., Papazoglou, V.J., Triantafyllou, M.S. & Brando, P. (1991) Experimental and numerical study on the effect of buoys on deep water mooring dynamics‏ .The First International Offshore and Polar Engineering Conference. Edinburgh, UK. [Online]. Available: https://onepetro. org/conference-paper/ISOPE-I-91-098 [Accessed: May 14, 2021].
  14. Motallebi, M., Ghafari, H.R., Ghassemi, H. & Shokouhian, M. (2020) Calculating the second-order hydrodynamic force on fixed and floating tandem cylinders. Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie 62, pp. 108–115, 2020, doi: 10.17402/425.
  15. Qiao, D. & Ou, J. (2013) Global responses analysis of a semisubmersible platform with different mooring models in South China Sea. Ships and Offshore Structures 8, pp. 441–456, doi: 10.1080/17445302.2012.718971.
  16. Vicente, P.C., Falcão, A.F. & Justino, P.J. (2011) Slackchain mooring configuration analysis of a floating wave energy converter. In Proceedings of the 26th International Workshop on Water Waves and Floating Bodies, thens, Greece (Vol. 17). Available: http://www.iwwwfb.org/ Abstracts/iwwwfb26/iwwwfb26_50.pdf [Accessed: May 14, 2022].
  17. Yuan, Z.-M., Incecik, A. & Ji, C. (2014) Numerical study on a hybrid mooring system with clump weights and buoys. Ocean Engineering 88, pp. 1–11, doi: 10.1016/j. oceaneng.2014.06.002.
ISSN on-line 2392-0378
Language English
Funding No data
Figures 15
Tables 4
Published 2022-09-30
Accepted 2022-05-06
Recieved 2022-07-29


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