Surge motion of a semi-submersible in freak waves

Yanfei Deng, Jianmin Yang, Wenhua Zhao, Longfei Xiao, Xin Li

    Research output: Contribution to journalArticle

    Abstract

    The surge responses of a semi-submersible under freak wave sequences are studied in time domain. In the present study, a measured New Year Wave sequence is applied to the reference semi-submersible, and its surge responses are analysed to reveal the interaction with freak waves. To investigate the influences of the relative phases, crest amplitudes and the three sister waves, a series of freak wave sequences with different wave parameters have been generated by embedding a freak wave sequence into a random wave sequence. Focuses are paid to the magnitudes of the surge responses, which are directly related to the forces of mooring lines. The surge motion amplitude is observed to be significantly influenced by the freak waves. Main conclusions are drawn regarding the influence of freak waves and their wave parameters on the surge motion responses.

    LanguageEnglish
    Pages443-451
    Number of pages9
    JournalSHIPS AND OFFSHORE STRUCTURES
    Volume12
    Issue number4
    DOIs
    StatePublished - 19 May 2017

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    Deng, Y., Yang, J., Zhao, W., Xiao, L., & Li, X. (2017). Surge motion of a semi-submersible in freak waves. SHIPS AND OFFSHORE STRUCTURES, 12(4), 443-451. DOI: 10.1080/17445302.2016.1149321
    Deng, Yanfei ; Yang, Jianmin ; Zhao, Wenhua ; Xiao, Longfei ; Li, Xin. / Surge motion of a semi-submersible in freak waves. In: SHIPS AND OFFSHORE STRUCTURES. 2017 ; Vol. 12, No. 4. pp. 443-451
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    abstract = "The surge responses of a semi-submersible under freak wave sequences are studied in time domain. In the present study, a measured New Year Wave sequence is applied to the reference semi-submersible, and its surge responses are analysed to reveal the interaction with freak waves. To investigate the influences of the relative phases, crest amplitudes and the three sister waves, a series of freak wave sequences with different wave parameters have been generated by embedding a freak wave sequence into a random wave sequence. Focuses are paid to the magnitudes of the surge responses, which are directly related to the forces of mooring lines. The surge motion amplitude is observed to be significantly influenced by the freak waves. Main conclusions are drawn regarding the influence of freak waves and their wave parameters on the surge motion responses.",
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    Deng, Y, Yang, J, Zhao, W, Xiao, L & Li, X 2017, 'Surge motion of a semi-submersible in freak waves' SHIPS AND OFFSHORE STRUCTURES, vol 12, no. 4, pp. 443-451. DOI: 10.1080/17445302.2016.1149321

    Surge motion of a semi-submersible in freak waves. / Deng, Yanfei; Yang, Jianmin; Zhao, Wenhua; Xiao, Longfei; Li, Xin.

    In: SHIPS AND OFFSHORE STRUCTURES, Vol. 12, No. 4, 19.05.2017, p. 443-451.

    Research output: Contribution to journalArticle

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    AU - Deng,Yanfei

    AU - Yang,Jianmin

    AU - Zhao,Wenhua

    AU - Xiao,Longfei

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    AB - The surge responses of a semi-submersible under freak wave sequences are studied in time domain. In the present study, a measured New Year Wave sequence is applied to the reference semi-submersible, and its surge responses are analysed to reveal the interaction with freak waves. To investigate the influences of the relative phases, crest amplitudes and the three sister waves, a series of freak wave sequences with different wave parameters have been generated by embedding a freak wave sequence into a random wave sequence. Focuses are paid to the magnitudes of the surge responses, which are directly related to the forces of mooring lines. The surge motion amplitude is observed to be significantly influenced by the freak waves. Main conclusions are drawn regarding the influence of freak waves and their wave parameters on the surge motion responses.

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    Deng Y, Yang J, Zhao W, Xiao L, Li X. Surge motion of a semi-submersible in freak waves. SHIPS AND OFFSHORE STRUCTURES. 2017 May 19;12(4):443-451. Available from, DOI: 10.1080/17445302.2016.1149321