Experimental study of interaction of modeled freestream disturbances with a blunted leading edge of a swept wing
M.M. Katasonov, V.V. Kozlov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: boundary layer, streaky structures, wave packet, swept wing
Abstract
Interaction of an external artificial disturbance with a blunted leading edge of a swept wing is studied under the conditions of a model experiment. Specific features of disturbances of a three-dimensional boundary layer arising due to significant bluntness of the leading edge and transverse flow are identified. It is shown that localized disturbances generated in the incident flow interact with the boundary layer on the swept wing and generate unsteady streaky structures; high-frequency wave packets are formed near these streaky structures. The dynamics of the development of wave packets and localized streaky structures in a three-dimensional boundary layer in a gradient flow is quantified.
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