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Dynamic response of a moored semisubmersible in short-crested wave fields

Heidari, A. H ; Sharif University of Technology | 2004

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2004
  3. Abstract:
  4. Wind generated sea states are more accurately modeled by short-crested wave fields. Whether or not these short-crested waves can induce larger response amplitudes in floating offshore structures is of great concern to offshore engineers. In this paper, the hydrodynamics of a moored semisubmersible in short-crested wave fields is investigated. Morison-based motion equations with nonlinear damping terms are used to analyze the dynamic behavior of the structure. A generalized three-parameter short-crested wave field is introduced as the incident wave. The effect of transverse phase lag, wave propagation angle and different ratios of in-line and transverse wave numbers are studied on the force and response amplitudes of the floating structure. Finally, the results are compared to that of the long-crested wave fields and critical cases are specified. © Sharif University of Technology, October 2004
  5. Keywords:
  6. Floating structure ; Wave-structure interaction ; Hydrodynamics
  7. Source: Scientia Iranica ; Volume 11, Issue 4 , 2004 , Pages 351-360 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_2539.html