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In this paper three-dimensional direct numerical simulations (3-D DNS) on vortex-induced vibrations of an elastically mounted circular cylinder near a stationary wall at a subcritical Reynolds number of 500 and a gap ratio of 0.8 are conducted. It is found that the three-dimensionality increases linearly with amplitude, leading to substantial variations in the vortex dynamics. The interactions of the vortices with the wall-generated boundary layer play significant roles in altering the cylinder vibration.
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Chen et al. (2022) studied this question.
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