The effects of the distributed surface roughness on mean flow distortion and generation of flow instabilities in a supersonic boundary layer at Mach number 2 are studied with the direct numerical simulation. Roughness elements cause distortions of the mean flow field and flow unsteadiness in their wake. Farther downstream, growth of the fluctuations contained in the streamwise vortices and the interaction of the adjacent vortices lead to a breakup of the boundary layer manifesting the beginning of the laminar–turbulent transition.
DNS of surface roughness effects on laminar–turbulent transition in a supersonic boundary layer
INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2016): Proceedings of the 18th International Conference on the Methods of Aerophysical Research ; 2016 ; Perm, Russia
AIP Conference Proceedings ; 1770 , 1
2016-10-13
6 pages
Conference paper
Electronic Resource
English
Numerical Simulations of Laminar-Turbulent Transition In Supersonic Boundary Layer
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