Closed-loop control of fluid-structure interactions on a flexibly supported cylinder

M. M. Zhang, Li Cheng, Y. Zhou

Research output: Journal article publicationConference articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

This work proposes a closed-loop control of vortex-induced vibrations on a flexibly supported square cylinder. One side of the cylinder was perturbed using actuators, which were controlled by a proportional-integral-derivative controller with its feedback signal provided by a hot wire placed in the near wake. The particle image velocimetry, hot wire and laser vibrometer measurements indicate that the perturbation has completely modified the fluid-structure interaction, drastically impairing the resonance between vortex shedding and vortex-induced structural vibration. Compared with an open-loop control, the closed-loop control has two advantages. Firstly, the perturbation amplitude required to suppress vortex shedding/structural vibration is reduced by about 70%. Secondly, the closed-loop control always suppresses vortex shedding/structural vibration, while an open loop may, or may not, depending on the relationship between the vortex shedding and perturbation frequencies.
Original languageEnglish
Pages (from-to)189-197
Number of pages9
JournalEuropean Journal of Mechanics, B/Fluids
Volume23
Issue number1
DOIs
Publication statusPublished - 1 Jan 2004
EventBluff Body Wakes and Vortex-Induced Vibrations - Port Douglas, Australia
Duration: 17 Dec 200220 Dec 2002

Keywords

  • Closed-loop control
  • PID controller
  • Vortex-induced vibration
  • Wake

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)

Cite this