2005•The proceedings of the JSME annual meetingOpen access
3815 Effect of phase of external force induced by vortex street on amplitude of lock-in oscillation
Masaya Kondo, Tadashi Watanabe
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Abstract
The relationship between the amplitude of a lock-in oscillation and the vortex street behind the cylinder in a crossflow was studied experimentally. The experiment, which controlled the vortex street using a separation plate behind the cylinder, showed that the amplitude of the lock-in oscillation was determined not by the flow velocity but by the vortex street. The experiment also showed that the amplitude of the lock-in oscillation qualitatively agrees with the prediction by our model that is based on the phase of the force induced by vortices.
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