Wake flow dynamics of an A320 morphing wing prototype through Time-Resolved PIV and Hi-Fi simulations
Résumé
The present article investigates the electroactive morphing effects on the aerodynamic performance around an A320 wing prototype with an embedded system of near trailing edge piezoactuators able to vibrate and apply slight deformations at optimal frequencies and amplitudes. Physical experiments based on time-resolved PIV and Hi-Fi numerical simulations at Reynolds number of 1 million, incidence of 10° and Mach number of 0.06, corresponding to the low subsonic regime at take-off conditions, investigated the physical mechanisms related to the increase in lift, drag and noise source reduction, based on the modification of the turbulence structure along the shearing regions and its interaction with coherent structures in the near wake. A lift-to-drag increase in the order of 6% as well as a spectral energy reduction in the order of 15% in dB have been obtained for a specific range of the actuation frequency and for low vibration amplitude of 0.7 \uD835\uDC5A\uD835\uDC5A. The physical mechanisms related to these performances are analysed by spectral analysis and POD.