https://doi.org/10.1051/epjconf/201715900024
On the development of controlled stationary and travelling disturbances in the supersonic boundary layer of a swept wing
1
Khristianovich Institute of Theoretical and Applied Mechanics, SB RAS, Institutskaya Str. 4/1, Novosibirsk, 630090, Russia
2
Novosibirsk State University, Novosibirsk 630090, Russia
* Corresponding author: kolosov@itam.nsc.ru
Published online: 25 October 2017
Experimental data on the evolution of controlled stationary and travelling disturbances in a 3D supersonic boundary layer, over a 45° swept-wing at Mach number 2.0, is presented. Travelling artificial disturbances were introduced in the boundary layer by periodical glow discharge, at a frequency of 20 kHz. Stationary disturbances were acquired by setting the roughness elements on the surface of the model. Spatial-temporal and spectral-wave characteristics of the wave train at the frequency 20 kHz, in the linear region of development, were obtained. It was found that the periodic modulation of mean flow can lead to the stabilization of unstable travelling disturbances in the supersonic boundary layer of a swept wing. These experiments have investigated the viability of using roughness elements to control laminar-turbulent transition.
© The authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
