Feedback control of vortex shedding around a bluff body by velocity excitation

Shinji Hiejima, T. Kumao, T. Taniguchi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A feedback control technique of vortex shedding behind a circular cylinder is investigated by means of two-dimensional numerical simulations. Fluid velocity excitation is applied to the separated shear flows at two positions on the cylinder surface with time delay and feedback gain for the fluid velocity at a downstream sensor position, It is shown that the feedback excitation can suppress the vortex shedding considerably, if the time delay of the excitation is varied in accordance with the change of the vortex shedding period and the sensor is located inside the vortex formation region behind the cylinder.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalInternational Journal of Computational Fluid Dynamics
Volume19
Issue number1
DOIs
Publication statusPublished - Jan 2005

Fingerprint

bluff bodies
vortex shedding
Vortex shedding
feedback control
Feedback control
Time delay
time lag
excitation
Feedback
Fluids
fluids
sensors
Sensors
circular cylinders
Shear flow
Circular cylinders
shear flow
Vortex flow
vortices
Computer simulation

Keywords

  • Circular cylinder
  • Excitation
  • Feedback control
  • Flow control
  • Karman vortices

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Condensed Matter Physics

Cite this

Feedback control of vortex shedding around a bluff body by velocity excitation. / Hiejima, Shinji; Kumao, T.; Taniguchi, T.

In: International Journal of Computational Fluid Dynamics, Vol. 19, No. 1, 01.2005, p. 87-92.

Research output: Contribution to journalArticle

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