Table of Contents
Aerospace, Volume 5, Issue 4 (December 2018)
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Cover Story (view full-size image) A combined numerical and experimental approach was employed to investigate active flow control and [...] Read more. A combined numerical and experimental approach was employed to investigate active flow control and its interplay with separation and transition in laminar separation bubbles. Experiments were carried out in a wind tunnel and in free flight using an instrumented 1:5 scale model of the Aeromot 200S, which has a modified NACA 643-618 airfoil. The same airfoil was also employed in simulations and wind tunnel experiments. With the properly chosen actuation amplitudes and frequencies, the Kelvin–Helmholtz instability resulted in a strong disturbance amplification and a “roll-up” of the separated shear layer. As a result, efficient and effective laminar separation control was realized. View this paper.