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Numerical simulation for truncated model tests of deepwater semi-submersible platform with viscous damper compensated system in mooring lines

  • Dongsheng Qiao*
  • , Hang Zhu
  • , Jinping Ou
  • , Fei Wu
  • *Corresponding author for this work
  • School of Civil Engineering, Harbin Institute of Technology
  • Dalian University of Technology
  • LuXun Academy of Fine Arts

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Through a truncated model test of semi-submersible platform with the static equivalent mooring system, the availability of numerical simulation in the motions calculation of semi-submersible platform are validated and the results show the mooring damping may contribute significantly to the total damping of deepwater floating platform in the low frequency range. The viscous damper is designed to simulate the contribution of mooring damping. The dissipated energy by a mooring line from the floating platform as a result of its oscillation is applied to calculate the mooring-induced damping. The value difference of mooring induced damping between the truncated and full-depth mooring line is linearized to provide parameter for the design of viscous damper. The viscous damper is added to the numerical simulation of the motions calculation of semi-submersible platform with the truncated mooring line. Finally, the results are compared with motions calculation of semi-submersible platform with the full-depth mooring line.

Original languageEnglish
Title of host publicationProceedings of the 21st (2011) International Offshore and Polar Engineering Conference, ISOPE-2011
Pages557-564
Number of pages8
StatePublished - 2011
Externally publishedYes
Event21st International Offshore and Polar Engineering Conference, ISOPE-2011 - Maui, HI, United States
Duration: 19 Jun 201124 Jun 2011

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference21st International Offshore and Polar Engineering Conference, ISOPE-2011
Country/TerritoryUnited States
CityMaui, HI
Period19/06/1124/06/11

Keywords

  • Dynamic analysis
  • Mooring damping
  • Motion calculation
  • Numerical simulation
  • Truncated model test
  • Viscous damper

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