A framework for closed-loop flow control using the parabolized stability equations
Résumé
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.
Domaines
Physique [physics]
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DYNFLUID_Aeroacoustics_Conference_2017_BIAU.pdf (681.01 Ko)
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