On the use of incomplete sensitivities for feedback control of laminar vortex shedding

A feedback control method based on incomplete sensitivities and gradient evaluation by complex variable method is proposed and applied to the problem of the control of the laminar vortex shedding past a circular cylinder. This procedure results in a low-cost control algorithm, which does not require...

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Bibliographic Details
Published in:Computers & fluids Vol. 35; no. 10; pp. 1432 - 1443
Main Authors: Leclerc, E., Sagaut, P., Mohammadi, B.
Format: Journal Article
Language:English
Published: Oxford Elsevier Ltd 01.12.2006
Elsevier Science
Subjects:
Computational methods in fluid dynamics
Exact sciences and technology
Flow control
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Physics
Rotational flow and vorticity
Separated flows
76M25
93C10
93C20
93C95
Actuators
Vortex shedding
Computational fluid dynamics
Digital simulation
Boundary conditions
Control systems
Complex variable method
Algorithms
Laminar flow
Feedback
Wakes
Circular cylinder
Modelling
Vortex flow
ISSN:0045-7930, 1879-0747
Online Access:Get full text
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Summary:A feedback control method based on incomplete sensitivities and gradient evaluation by complex variable method is proposed and applied to the problem of the control of the laminar vortex shedding past a circular cylinder. This procedure results in a low-cost control algorithm, which does not require to compute the gradient of the Navier–Stokes solution with respect to the controllers. For the sake of usability for practical applications, realistic sensors and actuators are used. Validation simulations aiming at controlling the drag of the cylinder are presented and compared with previous published results, proving the efficiency of the proposed method. Application to the control of the cylinder lift is also shown.
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ISSN:0045-7930
1879-0747
DOI:10.1016/j.compfluid.2003.09.009