Experimental and numerical study on flow past four rectangular columns in diamond configuration

Yibo Liang, Longbin Tao, Longfei Xiao, Mingyue Liu

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

2 Citations (Scopus)

Abstract

Vortex-Induced-Motions (VIM) is a cyclic rigid body motion that is induced by vortex shedding of a large sized floating structure (Spar, Semi-Submersible and Tension-Leg Platform) in deep water. Since the potential impact of VIM on fatigue life of mooring and riser systems can be critical, the study of the VIM phenomenon has drawn considerable attention among offshore engineering community. Despite the effort, there is still lack of understanding the complex fluid-structure interaction phenomenon. To date, it is very much relying on the simplified empirical approach in practical design.

Most of the Semi-Submersibles consist of four rounded-cornered rectangular columns. To investigate the flow interaction between each columns can reveal some physics behind the VIM. In this study, flow past four stationary rounded-corner rectangular columns are tested in the circulating channel and numerically simulated by the Star-CCM+ CFD package. Forces on the columns and the flow characteristics behind the structures are present in this study. A 2-D particle imaging velocimetry (PIV) technic has been adopted in present study to obtain the flow characteristics. The aim of this study is to investigate the interactions between four square columns.
Original languageEnglish
Title of host publicationASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
Number of pages7
Volume1
DOIs
Publication statusPublished - 9 Jun 2016
Event35th International Conference on Ocean, Offshore and Arctic Engineering - Busan, Korea, Republic of
Duration: 19 Jun 201624 Jun 2016

Conference

Conference35th International Conference on Ocean, Offshore and Arctic Engineering
Abbreviated titleOMAE2016
CountryKorea, Republic of
CityBusan
Period19/06/1624/06/16

Keywords

  • flow (dynamics)
  • vortex-induced-motions (VIM)
  • cyclic rigid body motion
  • vortex shedding
  • complex fluid-structure interaction
  • 2-D particle imaging velocimetry (PIV)

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