Flow induced vibrations of cylinder with flexible splitter plate

Abstract eng:
Flow past rigid cylinders with an attached flexible splitter plate is investigated for low Reynolds numbers. Cross-sections with corners (square) as well as without any corner (circle) are considered. An isolated circular cylinder with flexible splitter plate is mounted on spring. The effect of flexibility of plate on suppression of vibrations is considered. The rigid plate is found to be more effective for suppressing the vibrations. The interference between two square cylinders with splitter plates is considered for side-by-side configuration for different values of stiffness of the plate. Large amplitude of vibrations is observed for the cases in which dominant frequency of the plate vibrations locks–in with the first natural frequency of its bending oscillations.

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