TY - GEN
T1 - Numerical investigation of vortex-induced motions of a circular cylinder with free surface
AU - Chen, Songtao
AU - Zhao, Weiwen
AU - Wan, Decheng
AU - Hu, Changhong
N1 - Publisher Copyright:
© 2021 by the International Society of Offshore and Polar Engineers (ISOPE).
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:85115277630
SN - 9781880653821
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 2008
EP - 2014
BT - Proceedings of the 31st International Ocean and Polar Engineering Conference, ISOPE 2021
PB - International Society of Offshore and Polar Engineers
T2 - 31st International Ocean and Polar Engineering Conference, ISOPE 2021
Y2 - 20 June 2021 through 25 June 2021
ER -