Stability of time-periodic flow with laminar boundary-layer separation View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2018-09

AUTHORS

A. V. Boiko, A. V. Dovgal, A. M. Sorokin

ABSTRACT

The influence of the low-frequency modulation of flow behind a rectangular backward-facing step on the amplitude characteristics of disturbances in the separated laminar boundary layer has been studied. The experimental data were obtained by the method of hot-wire anemometry in a wind tunnel at a low subsonic velocity. Response of the separated flow to the long-wave oscillations generated by a local source of disturbances on the surface of the experimental model was clarified. The low-frequency nonstationarity of the separation region leads to a growth of velocity fluctuations in the separated boundary layer, which dominate the laminar-turbulent transition and the state of the flow in the near-wall region. More... »

PAGES

667-673

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0869864318050037

DOI

http://dx.doi.org/10.1134/s0869864318050037

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1110904995


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