Open AccessModelling of the boundary layer disturbances by localized effect of the round membrane
Author(s) -
М. М. Катасонов,
В. В. Козлов,
А. М. Павленко,
И. А. Садовский
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1382/1/012016
Subject(s) - boundary layer , laminar flow , mechanics , wave packet , oblique case , impulse (physics) , physics , boundary (topology) , classical mechanics , optics , mathematics , mathematical analysis , philosophy , linguistics , quantum mechanics
The spatial development of the flat plate boundary layer disturbances by the hot-wire anemometry is experimentally investigated. Controlled disturbances were introduced into the laminar flow by means of a round membrane located on the surface of the model. The impulse motion of a round membrane leads to the formation of longitudinal localized structures and wave packets in the boundary layer. Wave packets consist of a set of straight and oblique waves, differing in their propagation characteristics. The development of wave packets downstream is consistent with the linear theory of hydrodynamic stability.