Investigation of motions of a floating wind turbine foundation with multiple moonpools

Lei Tan, Tomoki Ikoma, Katsuhide Fujishima, Yasuhiro Aida, Koichi Masuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper the motions of a barge-type floating foundation installed with four moonpools and a VAWT are investigated through physical model tests and numerical calculations. The characteristics of motion responses and mooring tether tensions under various wave conditions are examined. The gyroscopic effects of turbine rotations are studied by varying the mass and the rotational speed of wind turbine. Linear potential calculations are carried out using WAMIT. It is found that the gyroscopic effect due to turbine rotations can be significant. The first-order motions of the floating system are substantially reduced by the gyroscopic effect, while the second-order motions and tether tensions may be significantly increased. The viscous damping of water motions in moonpools is found not negligible to produce reasonable predictions.

Original languageEnglish
Title of host publication14th ISOPE Pacific/Asia Offshore Mechanics Symposium, PACOMS 2020
PublisherInternational Society of Offshore and Polar Engineers
Pages358-365
Number of pages8
ISBN (Electronic)9781880653838
Publication statusPublished - 2020
Externally publishedYes
Event14th ISOPE Pacific/Asia Offshore Mechanics Symposium, PACOMS 2020 - Dalian, China
Duration: Nov 22 2020Nov 25 2020

Publication series

Name14th ISOPE Pacific/Asia Offshore Mechanics Symposium, PACOMS 2020

Conference

Conference14th ISOPE Pacific/Asia Offshore Mechanics Symposium, PACOMS 2020
Country/TerritoryChina
CityDalian
Period11/22/2011/25/20

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering
  • Ocean Engineering

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