Modelling of the boundary layer disturbances by localized effect of the round membrane

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 lead...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1382; no. 1; pp. 12016 - 12020
Main Authors Katasonov, M M, Kozlov, V V, Pavlenko, A M, Sadovskii, I A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2019
Subjects
Boundary layers
Disturbances
Flat plates
Laminar flow
Membranes
Physics
Velocity measurement
Wave packets
Wave propagation
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Summary: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.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1382/1/012016