PLASMA FUNCTIONALIZATION OF MULTI-SCALE STRUCTURES

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PLASMA FUNCTIONALIZATION OF MULTI-SCALE STRUCTURES ( plasma-functionalization-multi-scale-structures )

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4. LITERATURE SURVEY 4.1.Stall control at high angle of attack with plasma sheet actuators Author: Roberto Sosa / Guillermo Artana / Eric Moreau / Ge ́rardTouchard In this project the modifications of the airflow around an NACA 0015 airfoil when the flow was perturbed with electro hydrodynamic forces. The actuation was produced with a plasma sheet device (PSD) consisting in two bare electrodes flush mounted on the surface of the wing profile operated to obtain a discharge contouring the body in the inter electrode space. Analyzed the influence of different parameters of the actuation (frequency, input power, electrodes position) on the aerodynamic performance of the airfoil, basing our study on measurements of the surface pressure distribution and of the flow fields with particle image velocimetry technique The significant modifications were observed when the flows were actuated in post-stall conditions meanwhile actuation in naturally attached flows did not produce important changes in the flow structure. According to the angle of incidence and to the receptivity of the flow to the actuation, three different behaviours could be identified: near, middle and deep post-stall regime. In the 10

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