This article is cited in 15 papers

Generation of perturbations by a localized vibrator in the boundary layer of a nonswept wing

V. G. Chernorai, A. N. Spiridonov, M. M. Katasonov, V. V. Kozlov

Institute of Theoretical and Applied Mechanics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090

Abstract: Origination and development of perturbations generated by a three-dimensional vibrating surface in the boundary layer on an airfoil with a zero slip angle is experimentally studied. Surface vibrations were generated by a Mylar membrane. It is shown that high-amplitude vibrations of a three-dimensional surface lead to simultaneous formation of two types of perturbations in the boundary layer: quasi-stationary streamwise structures and wave packets accompanying them. The presence of regions with favorable and adverse pressure gradients does not exert a significant effect on evolution of streamwise structures but leads first to attenuation and then to amplification of wave packets.

UDC: 532.526

Received: 01.12.2000
Accepted: 22.02.2001

 English version: Journal of Applied Mechanics and Technical Physics, 2001, 42:5, 765–772

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