A framework for closed-loop flow control using the parabolized stability equations
Communication avec acte
Author
CAVALIERI, André V. G.
560912 Acoustique, Aérodynamique, Turbulence [Institut Pprime] [2AT ]
471029 Instituto Tecnológico de Aeronáutica [São José dos Campos] [ITA]
560912 Acoustique, Aérodynamique, Turbulence [Institut Pprime] [2AT ]
471029 Instituto Tecnológico de Aeronáutica [São José dos Campos] [ITA]
JORDAN, Peter
131861 University of Groningen [Groningen]
300463 École Nationale Supérieure de Mécanique et d’Aérotechnique [Poitiers] [ISAE-ENSMA ]
560912 Acoustique, Aérodynamique, Turbulence [Institut Pprime] [2AT ]
131861 University of Groningen [Groningen]
300463 École Nationale Supérieure de Mécanique et d’Aérotechnique [Poitiers] [ISAE-ENSMA ]
560912 Acoustique, Aérodynamique, Turbulence [Institut Pprime] [2AT ]
Abstract
We develop a reduced-order-model framework using the parabolized stability equations and identification techniques for the closed-loop control of unsteady fluctuations along fluidic systems. These models had been successfully applied to a turbulent jet as estimation techniques and to an incompressible shear-layer for the development of closed-loop control laws. Through this paper, we propose a further investigation of the PSE-based transfer functions, exploring its flexibility to educe different control schemes and to determine the most effective sensor/actuator positions. Emphasis is be given to the feedforward and feedback configurations for flow control, and differences are understood in terms of causality. A study of the robustness to uncertainties in Reynolds and mean flow velocity, along with external perturbations is also presented. These topics allow deeper insight into the active closed-loop flow control problem and therefore may lead to more effective schemes, particularly on what concerns the experimental implementation of closed-loop control.
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