Flow around a Circular Cylinder with Periodic Disturbance

Abstract

This paper presents an experimental investigation of a flow around a circular cylinder with an external periodic disturbances. Phase averaged velocity based on the fluctuating surface pressure were measured to clarify the effect of the excitation on the vortex shedding process. The frequency of the vortex shedding and the convective velocity of the vortex structure are slightly changed by the excitation.