Discussion on: Symmetry Reduction and Control of the Dynamics of a 2-D Rigid Circular Cylinder and a Point Vortex: Vortex Capture and Scattering

2007 ◽  
Vol 13 (6) ◽  
pp. 655-656
Author(s):  
Sebsatian Ferraro ◽  
David Martín de Diego
Keyword(s):  
Circular Cylinder ◽  
Point Vortex ◽  
Symmetry Reduction ◽  
Vortex Capture ◽  
And Control

Numerical Simulations and Control of the Flow Past a Circular Cylinder

2003 ◽  
Author(s):  
Mingqing Xiao ◽  
Yuan Lin ◽  
R. Chris Camphouse ◽  
James Myatt ◽  
Siva Banda
Keyword(s):  
Circular Cylinder ◽  
Numerical Simulations ◽  
Flow Past ◽  
And Control

scholarly journals Falling motion of a circular cylinder interacting dynamically with a point vortex

2012 ◽  
pp. 617-628
Author(s):  
S. V. Sokolov ◽  
◽  
S. M. Ramodanov ◽  
Keyword(s):  
Circular Cylinder ◽  
Point Vortex

Falling motion of a circular cylinder interacting dynamically with a point vortex

2013 ◽  
Vol 18 (1-2) ◽  
pp. 184-193 ◽  
Author(s):  
Sergei V. Sokolov ◽  
Sergei M. Ramodanov
Keyword(s):  
Circular Cylinder ◽  
Point Vortex

Nonlinear Analysis and Control of Detached Model Flows

2002 ◽  
Author(s):  
Bernardo Galletti ◽  
Angelo Iollo ◽  
Luca Zannetti
Keyword(s):  
Nonlinear Control ◽  
Nonlinear Analysis ◽  
Single Point ◽  
Point Vortex ◽  
Separation Region ◽  
Variable Intensity ◽  
Control Techniques ◽  
Crude Model ◽  
And Control ◽  
Massive Separation

In this paper we discuss some aspects related to feed-back control of detached flows. We use a very crude model, a single point vortex of variable intensity, to describe the massive separation region past a cusp followed by a smooth cavity. Then we investigate the controllability and the observabilty of the system by standard nonlinear control techniques. We concentrate on the possibility of controlling such a model by a feed-back controller and define the conditions under which the vortex can be asymptotically stabilized about unstable equilibria.

Dynamics of a Circular Cylinder With a Passive Degree of Freedom Interacting With an Inviscid Fluid Containing a Point Vortex

2017 ◽  
Author(s):  
Phanindra Tallapragada ◽  
Beau Pollard ◽  
Vitaliy Fedonyuk
Keyword(s):  
Circular Cylinder ◽  
Minimal Model ◽  
Degrees Of Freedom ◽  
Point Vortex ◽  
Point Vortices ◽  
Degree Of Freedom ◽  
Inviscid Fluid ◽  
Recent Past ◽  
Internal Rotor ◽  
Mechanical Feedback

In the recent past the design of many aquatic robots has been inspired by the motion of fish. Actuated internal rotors or moving masses have been frequently used either for propulsion and or the control of such robots. However the effect of internal passive degrees of freedom or passive appendages on the motion of such robots is poorly understood. In this paper we present a minimal model that demonstrates the influence of passive degrees of freedom on an aquatic robot. The model is of a circular cylinder with a passive internal rotor, immersed in an inviscid fluid interacting with point vortices. We show through numerics that the motion of the cylinder containing a passive degree of freedom is significantly different than one without. These results show that the mechanical feedback via passive degrees of freedom could be a useful way to control the motion of aquatic robots.

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