Volume 7, 2015Progress in Flight Physics – Volume 7
|Page(s)||605 - 618|
|Section||Stability and transition|
|Published online||08 June 2015|
Transitional flow structure on classic and wavy wings at low Reynolds numbers
Khristianovich Institute of Theoretical and Applied Mechanics Siberian Branch of the Russian Academy of Sciences 4/1 Institutskaya Str., Novosibirsk 630000, Russia
The paper presents experimental results on the boundary-layer structure and laminar-turbulent transition on a wavy wing designed for unmanned air vehicles (UAVs). The study has been performed at the chord Reynolds number of the order of 105 to compare the wings with smooth and wavy surfaces at similar conditions. The flow past Z-15-25 airfoil was investigated with a particle-image velocimetry (PIV). The method made it possible to obtain a spatial pattern of velocity perturbations on the wing with wavy surface.
© Owned by the authors, published by EDP Sciences, 2015