Session: 08-06-01 non-presentations

Paper Number: 126151

126151 - Investigation of Vortex-Induced Vibration of Rigid and Flexible Cylinder Using Two-Way Fluid-Structure Interaction 

Quantitative information is vital in designing the flexible structure design. The present study investigates the vortex-shedding phenomenon of flexible and rigid cantilever beams subjected to uniform flow. The three-dimensional benchmark problem was taken for validation to ensure the accuracy of the present two-way FSI model. The damped oscillation caused by an initial disturbance on a solid plate in a closed cavity of still fluid was simulated numerically using the two-way FSI model. The solid plate was excited by an initial disturbance pressure load on one side of the plate face for a few seconds and released after a few seconds. Then, the solid undergoes coupled oscillations about its initial equilibrium position, damped due to the surrounding fluid. The tip displacement history is plotted and compared with the experimental result, which was in good agreement. The flexible cylinder undergoes bending in a streamwise direction, and it also vibrates in crossflow and inline directions due to the vortex shedding. This leads to a drastic change in the dynamic behaviors of the flexible structure compared to the rigid cylinder. The time and frequency domain responses of the tip displacement is being analyzed for both the rigid and flexible cylinder using a two-way fluid-structure interaction model. The tip vortices near the free end of the cylinder influence the structure vibration of the flexible cylinder.

Presenting Author: KARTHIKEYAN S Free lancer

Presenting Author Biography: Doctorate from IIT Madras

Authors:

KARTHIKEYAN S Free lancer