DDES and OES Simulations of a Morphing Airbus A320 Wing and Flap in Different Scales at High Reynolds

The present study concerns the use of unsteady numerical simulations by means of Navier Stokes Multi Block (NSMB) solver including both high order schemes and turbulence resolving methods. Firstly, this work attempts to highlight the role of the morphing applied to the supercritical Airbus A320 wing and flap in the trailing-edge for a Reduced Scale (RS) prototype at the clean position, this morphing includes a slight deformation of the trailing edge with a selected frequency and amplitude, which has an impact on the flow near the trailing edge and specially in the wake structures. This solution can transform the 3-dimensional chaotic flow into a 2-dimensional one by enhancing coherence of 2D structures rows of von Kármán vortices. In Addition, the highlift A320 wing-flap at the take-off position in Large-Scale (LS) configuration have been studied using advanced hybrid models DDES, the Organised Eddy Simulation OES and SST for the RANS regions as well as LES Smagorinsky model

MORPHING FOR SMART WING DESIGN THROUGH RANS/LES METHODS

This article presents numerical simulation results obtained in the context of the H2020 European research project SMS, “Smart Morphing and Sensing for Aeronautical configurations” by using among other, hybrid RANS-LES methods, able to accompany the design of the wings of the future. The morphing concepts studied are partly bio-inspired and are able to act in multiple time and length scales. They are proven efficient for the increase of the aerodynamic performances of A320 wings in reduced scale and near scale one, in synergy with the prototypes built within this project. The simulations have shown the ability of novel electroactive actuators performing slight deformation of the trailing edge region and optimal vibrations, to create suitable vortex breakdown of specific coherent structures and to enhance beneficial vortices, leading to thinning of the shear layers and the wake’s width. The simulations quantified the optimal actuation ranges and the gains in lift increase, drag reduction and simultaneous attenuation of the noise sources past the trailing edge