Recent developments in applied mathematics and mechanics: theory, experiment and practice. Devoted to the 80th anniversary of academician N.N.Yanenko

Akademgorodok, Novosibirsk, Russia, June 24 - 29, 2001

Abstracts

Novosibirsk participants

Experimental investigation of evolution of the controllable disturbances in the model boundary layer and in the wake behind it at supersonic flowing

Lysenko V.I., Kosinov A.D., Yermolaev Yu.G.

Institute of Theoretical & Applied Mechanics (Novosibirsk)

For the first time by experimental way at supersonic speeds, the development of the artificial disturbances in the system "the boundary layer on the flat site of a plate - the boundary layer on an opposite wedge (a model stern) after a fan of expansion waves - the wake" was investigated. The strong stabilization of disturbances at passage through a fan of expansion waves at transition from a flat plate to an opposite wedge was confirmed. It was found, that the wake disturbances have a complex wave structure. It was obtained, that for the symmetric mode in the supersonic wake the three-dimensional waves are the most unstable.

Full Text in Russian: PDF (360 kb)
Note. Abstracts are published in author's edition

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