Amplitude Enhancement of Flow-Induced Vibration for Energy Harnessing

Amplitude Enhancement of Flow-Induced Vibration for Energy Harnessing

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In here this paper, flow-induced vibrations of bluff bodies with four different cross-sectional geometries (circle, square, triangle and semi-circle) arranged both in single and tandem (gap ratio equals to 3 and 5) configurations are investigated in a wind tunnel.It is found that triangular and square cylinders have the higher amplitude than that of the semi-circular and the circular cylinders in the single configuration.When two cylinders are arranged in tandem, the circular cylinders have the highest amplitude among all tested cylinders.Furthermore, the semi-circular cylinder shows that its vibrating amplitude increases with the reduced 100w products velocity in the tandem system due to the galloping effect.