Stall Control by Plasma Actuators: Characterization along the Airfoil Span

Giulia Zoppini, Marco Belan, Alex Zanotti, Lorenzo Di Vinci and Giuseppe Campanardi
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Giulia Zoppini: Department of Aerodynamics, TU Delft, Leeghwaterstraat 42, 2628 CA Delft, The Netherlands
Marco Belan: DAER, Politecnico di Milano, Via La Masa 39, 20156 Milano, Italy
Alex Zanotti: DAER, Politecnico di Milano, Via La Masa 39, 20156 Milano, Italy
Lorenzo Di Vinci: DAER, Politecnico di Milano, Via La Masa 39, 20156 Milano, Italy
Giuseppe Campanardi: DAER, Politecnico di Milano, Via La Masa 39, 20156 Milano, Italy

Energies, 2020, vol. 13, issue 6, 1-20

Abstract: A dielectric barrier discharge actuator (DBD) is considered and studied as a stall recovery device. The DBD is installed on the nose of a NACA0015 airfoil with chord × span 300 × 930 mm. The geometry of the exposed electrode has periodic triangular tips purposely designed for the case under study. Wind tunnel tests have been carried out over a range of airspeeds up to 35 m/s with a Reynolds number of 700 k. The flow morphology has been characterized by means of the particle image velocimetry technique, obtaining velocity fields and pressure coefficients. By exploring different planes along the model span, the three-dimensional effect of the DBD has been reconstructed, identifying the flow region mainly sensitive to the plasma actuation. Finally, the actuator effectiveness has been quantified accounting for the power consumption data, leading to defining further design improvements in view of a better efficiency.

Keywords: flow control; separation control; plasma actuators; dielectric barrier discharge (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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