Active flow control relative to a rotating cylinder

Author

Ou, Yuh-Roung

Author_Institution

Dept. of Aerosp. & Ocean Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

1992

fDate

1992

Firstpage

3399

Abstract

The author considers active control problems for a two-dimensional viscous incompressible flow generated by a circular cylinder impulsively started into a combined (steady or unsteady) rotatory and rectilinear motion. Emphasis is placed on seeking the optimal control of time-averaged forces on the cylinder surface using the rotation rate as a control parameter. Numerical results are presented for three types of rotation: constant speed of rotation; time-harmonic rotatory oscillation; and time-periodic rotation. The rotation rate is demonstrated to be intimately relevant to the vortex shedding process in the wake and the development of forces acting on the cylinder

Keywords

flow control; fluid dynamics; optimal control; optimal control; rectilinear motion; rotating cylinder; rotatory motion; time-averaged forces; time-harmonic rotatory oscillation; time-periodic rotation; two-dimensional viscous incompressible flow; vortex shedding process; Aerospace control; Aerospace engineering; Control systems; Engine cylinders; Fluid flow; Fluid flow control; Force control; Mathematics; Motion control; Navier-Stokes equations; Optimal control; Poisson equations;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1992., Proceedings of the 31st IEEE Conference on

Conference_Location

Tucson, AZ

Print_ISBN

0-7803-0872-7

Type

conf

DOI

10.1109/CDC.1992.371224

Filename

371224