Gaspare Li Causi
Enhancing Active Flow Control Strategies for Delaying 2D Boundary Layer Transition.
Rel. Jacopo Serpieri. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Aerospaziale, 2024
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Abstract
Through research studies conducted over the years, it has been demonstrated that suction is a highly effective active flow control (AFC) technique exploited for laminar-turbulent transition delaying. The primary aim of employing active flow techniques for transition control is the maintenance of laminar flow over a region whose extension needs to be maximized. Considering that half of the total drag stems from skin friction(Marec, J. P., 2001, Drag reduction: a major task for research.), this strategy diminishes the overall friction drag experienced by an object immersed in a fluid. This thesis focuses on utilizing a numerical framework to determine the optimal suction configuration, intending to maximize the extension of the laminar region within a steady, incompressible, and two-dimensional flat plate boundary layer.The computational approach involves integrating the boundary layer equations using an internally developed code (IBL), with suction effects introduced through the wall boundary condition.
Validation is conducted by comparing IBL computed velocity field with the Blasius and openFOAM solutions
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