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SONG Zhi-jun, GOU Ying, TENG Bin, SHI Zhong-min, QU Yan, XIAO Yue. The motion responses of a Spar platform under internal solitary wave[J]. Haiyang Xuebao, 2010, 32(2): 12-19.
Citation: SONG Zhi-jun, GOU Ying, TENG Bin, SHI Zhong-min, QU Yan, XIAO Yue. The motion responses of a Spar platform under internal solitary wave[J]. Haiyang Xuebao, 2010, 32(2): 12-19.

The motion responses of a Spar platform under internal solitary wave

  • Received Date: 2009-12-11
  • Rev Recd Date: 2010-04-22
  • In this paper, a time-domain numerical model is established to consider the motion responses of a Spar platform induced by internal solitary wave which satisfies the K-dv equation. The horizontal force on the Spar is computed by Morison equation and the vertical force is computed by integration of the fluid pressure on the Spar bottom based on Bernoulli equation. The catenary theory is used to analyze the mooring force. The motion equation is solved by using fourth-order Runge-Kutta method. The numerical results show that when the internal solitary approaches to the Spar platform, the platform produces a much greater displacement comparing with the displacement induced by the surface waves. It is approved that internal solitary wave is one of the important effecting factors for the stability of offshore platform. Therefore the influence of internal solitary wave on the deep-sea platforms can not be neglected in design and estimation.
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