Two numerical simulation models to predict large-amplitude motions of floating platforms are presented. The first method is based on the application of the relative-velocity formulation of Morison's equation for force calculations. The second method developed in this work uses the three-dimensional potential theory in time domain. In this method, both the Froude-Krylov and scattering forces are calculated by considering finite wave amplitude effects in random waves. The effect of various nonlinearities on the low-frequency motions and high-frequency tether-tension response of a tension leg platform are studies using these simulation models in conjunction with power spectral methods. The presence of current and the nonlinear drag force are observed to have a significant effect on the low frequency motions and tether tensions.

  • Supplemental Notes:
    • Ocean Engng, v 22 n 4, May 1995, p 367 [19 p, 33 ref, 10 fig]
  • Authors:
    • Chitrapu, A S
    • Ertekin, R C
  • Publication Date: 1995


  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00717277
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 4 1996 12:00AM