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

S. Hiejima; T. Kumao; Takeo Taniguchi

doi:10.1080/10618560412331286319

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

S. Hiejima, T. Kumao, Takeo Taniguchi

Research output: Contribution to journal › Article › peer-review

14 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 language	English
Pages (from-to)	87-92
Number of pages	6
Journal	International Journal of Computational Fluid Dynamics
Volume	19
Issue number	1
DOIs	https://doi.org/10.1080/10618560412331286319
Publication status	Published - Jan 2005

Keywords

Circular cylinder
Excitation
Feedback control
Flow control
Karman vortices

ASJC Scopus subject areas

Computational Mechanics
Aerospace Engineering
Condensed Matter Physics
Energy Engineering and Power Technology
Mechanics of Materials
Mechanical Engineering

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10.1080/10618560412331286319

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title = "Feedback control of vortex shedding around a bluff body by velocity excitation",

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.",

keywords = "Circular cylinder, Excitation, Feedback control, Flow control, Karman vortices",

author = "S. Hiejima and T. Kumao and Takeo Taniguchi",

note = "Funding Information: This work was supported partly by a grant from KAKENHI (No.14655169) of the Japan Society for the Promotion of Science. We would like to acknowledge the generosity of this organization. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

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AU - Hiejima, S.

AU - Kumao, T.

AU - Taniguchi, Takeo

N1 - Funding Information: This work was supported partly by a grant from KAKENHI (No.14655169) of the Japan Society for the Promotion of Science. We would like to acknowledge the generosity of this organization. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2005/1

Y1 - 2005/1

N2 - 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.

AB - 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.

KW - Circular cylinder

KW - Excitation

KW - Feedback control

KW - Flow control

KW - Karman vortices

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

Abstract

Keywords

ASJC Scopus subject areas

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