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Visualization of Mechanical Processes: An International Online Journal


ISSN Online: 2152-209X

Archives: Volume 1, 2011 to Volume 9, 2019

Visualization of Mechanical Processes: An International Online Journal

DOI: 10.1615/VisMechProc.2013006967

INSTABILITY OF A SWEPT-WING BOUNDARY LAYER MODULATED BY STATIONARY FLOW PERTURBATIONS

Valery G. Chernoray
Department of Mechanics and Maritime Sciences, Chalmers University of Technology, Gothenburg, Sweden
Alexander V. Dovgal
 Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk 630090, Russia
Genrich R. Grek
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya St. 4/1, Novosibirsk, 630090 Novosibirsk region, Russia
Victor V. Kozlov
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya St. 4/1, Novosibirsk, 630090 Novosibirsk region, Russia
Yury A. Litvinenko
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya St. 4/1, Novosibirsk, 630090 Novosibirsk region, Russia
Lennart Lofdahl
Chalmers University of Technology, 412 96 Goteborg, Sweden

ABSTRAKT

A collection of illustrations of swept-wing boundary layer secondary instability at low subsonic flow velocities is presented in this paper. The experimental results, obtained by hot-wire "visualization," provide detailed insight into the spatio-temporal structure and evolution of oscillations in the three-dimensional laminar boundary layer disturbed by longitudinal vortices and streaky structures.


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