03.3 - Basic Fluid Dynamics and Flow ControlWAVEPACKETS IN TURBULENT FLOW OVER A NACA 4412 AIRFOILL.I. Abreuč, A.V.G. Cavalierič, P. SchlatterČ, R. VinuesaČ, D. HenningsonČ; čITA, Brazil ;ČKTH, Sweden The preliminary results show wavepackets on the airfoil surface, where the boundary layer is turbulent. This knowledge will be used to better understand mechanisms of trailing-edge noise, which can lead to wing modifications so as to reduce sound radiation. Understanding, modelling and controlling such wavepackets can point to novel approaches in order to design more silent aircraft. |