Abstract
Interference and turbulence intensity effects on the dynamics characteristics of the flow-induced vibration of elastically mounted smooth and rough cylinders in a cross flow in the vortex shedding and fluidelastic regions were experimentally investigated.It was found that the presence of an interfering cylinder in the wake of the test cylinder reduces the amplitude of oscillation in the vortex excitation region, while in the fluidelastic region an increase in the amplitude of oscillation is experienced. The effect of turbulence intensity on the dynamic response of the cylinder is found to be very much dependent on the values of free-stream turbulence intensity, relative surface roughness, gap spacing and relative dimension of the interfering cylinder.
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