In the present paper we are concerned with the problem of active drag minimizatin in the incompressible wake flow generated by a circular cylinder with turbulent Reynolds number.The objectives of the work are twofold:first,we show evidence coming from numerical simulations that a properly designed open-loop algorithm is indeed capable of performing effective flow control resulting in significant drag reduction,and then,with this motivation,we outline a rigorous feedback algorithm based on Optimal Control Theory.
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