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Comparison of active control techniques over a dihedral plane. (English) Zbl 0997.93079

The numerical comparison of four active control techniques in order to increase the pressure recovery generated by the deceleration of a slightly compressible viscous flow over a dihedral plane is considered. It is performed by making use of vortex generator jets and intrusive sensors. The governing equations, the two-dimensional direct numerical simulation code and the flow configuration are presented. Then, the objective of the control is displayed, and the uncontrolled flow is described.
The essential part of this paper deals with the explanation and the comparison of four active control strategies: closed loop control, adaptive control, physical ramp control and sub-optimal control. Each of these techniques is of a different nature, and the results are very informative for understanding what is important in making the control efficient.

MSC:

93C95 Application models in control theory
93C20 Control/observation systems governed by partial differential equations
76N25 Flow control and optimization for compressible fluids and gas dynamics
76M23 Vortex methods applied to problems in fluid mechanics
76G25 General aerodynamics and subsonic flows
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References:

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