Title :
Active flow control relative to a rotating cylinder
Author_Institution :
Dept. of Aerosp. & Ocean Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
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;
Conference_Titel :
Decision and Control, 1992., Proceedings of the 31st IEEE Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0872-7
DOI :
10.1109/CDC.1992.371224
