Journal
JOURNAL OF VIBRATION AND CONTROL
Volume 20, Issue 8, Pages 1137-1147Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546312469425
Keywords
Control; vortex-induced vibration; computational fluid dynamics; synchronization; circular cylinder
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Funding
- University of Engineering & Technology (UET) Peshawar, Pakistan
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We consider the problem of suppressing oscillations of an elastically mounted rigid cylinder undergoing vortex-induced vibrations by linear and nonlinear active velocity feedback controllers. Each controller relies on an actuator, which imparts an opposing force to the cylinder motion, thereby reducing its high-amplitude oscillations. A strongly coupled fluid-structure numerical model is used to solve the fluid-structure interaction equations. The results show that the choice of the active feedback controller depends on the allowable controlled amplitude of the cylinder. It is found that a cubic velocity feedback controller is more efficient than its linear velocity counterpart when very small controlled amplitudes are desired.
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