Numerical investigation of vortex-induced motions of a circular cylinder with free surface

Songtao Chen, Weiwen Zhao, Decheng Wan, Changhong Hu

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

The vortex-induced motions (VIM) of bluff bodies and multi-column structures has been studied extensively through experiments and numerical simulations. Nevertheless, most numerical simulations ignore the existence of free surface and treat it as a rigid plane using boundary conditions. The objective of this paper is to investigate the effect of free surface on VIM for the Reynolds number covering 1.0×105 < Re < 1.6×105. The two degree-of-freedoms (DOF) vortex-induced motions of a circular cylinder with and without free surface are investigated with our in-house solver naoe-FOAM-SJTU. The Delay Detached-Eddy Simulation (DDES) approach is used to simulate the turbulent flow. To capture the free surface, the Piecewise Linear Interface Calculation (PLIC) which is a geometric Volume of Fluid (VOF) method is adopted. The results show that the free surface has major effects on the in-line motion amplitude, transverse oscillation frequency and motion trajectory, which cannot be ignored.

本文言語英語
ホスト出版物のタイトルProceedings of the 31st International Ocean and Polar Engineering Conference, ISOPE 2021
出版社International Society of Offshore and Polar Engineers
ページ2008-2014
ページ数7
ISBN(印刷版)9781880653821
出版ステータス出版済み - 2021
イベント31st International Ocean and Polar Engineering Conference, ISOPE 2021 - Virtual, Online
継続期間: 6 20 20216 25 2021

出版物シリーズ

名前Proceedings of the International Offshore and Polar Engineering Conference
ISSN(印刷版)1098-6189
ISSN(電子版)1555-1792

会議

会議31st International Ocean and Polar Engineering Conference, ISOPE 2021
CityVirtual, Online
Period6/20/216/25/21

All Science Journal Classification (ASJC) codes

  • エネルギー工学および電力技術
  • 海洋工学
  • 機械工学

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