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A NUMERICAL STUDY OF WAVE IMPACTS ON A SEMI-SUBMERSIBLE

  • Yanfei Deng
  • , He Li
  • , Zixuan Wang*
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen
  • CIMC Offshore Co. Ltd

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

Abstract

A fully nonlinear numerical wave tank (NWT) is set up for extreme wave modelling and wave impact simulation. As a first step, a focused wave train was model and the focal location where the steep focused wave is close to breaking was determined. Subsequently, an in-depth investigation is performed on the wave impact loads on the wave-ward side of a deck box of a semi-submersible subject to this extreme wave. The numerical results are also compared with the predictions in accordance to the DNVGL technical guide. It is concluded that the severe horizontal impact loads are caused by the “strike” action of the rushing water mass from near-breaking waves rather than the run-up jets. The predictions based on the technical guide are conservative and in general overestimate the impact loads. These findings could contribute to a more comprehensive understanding and a more accurate algorithm with respect to the horizontal impact loads.

Original languageEnglish
Title of host publicationOcean Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791886878
DOIs
StatePublished - 2023
Externally publishedYes
EventASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023 - Melbourne, Australia
Duration: 11 Jun 202316 Jun 2023

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume5

Conference

ConferenceASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023
Country/TerritoryAustralia
CityMelbourne
Period11/06/2316/06/23

Keywords

  • extreme wave
  • numerical wave tank
  • wave impact

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