Modification of flow perturbations in a laminar separation bubble by heat transfer

Laminar boundary layer separation in conditions of localized heat transfer is investigated at low subsonic velocity through wind-tunnel measurements and linear stability analysis. A backward-facing step flow is subjected to a stationary temperature variation generated by Peltier elements installed o...

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Bibliographic Details
Published inPhysics of fluids (1994) Vol. 29; no. 2
Main Authors Boiko, A. V., Dovgal, A. V., Sorokin, A. M.
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.02.2017
Subjects
Boundary layer
Flow separation
Flow stability
Fluid dynamics
Laminar boundary layer
Laminar flow
Laminar heat transfer
Model testing
Physics
Stability analysis
Wind tunnels
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Summary:Laminar boundary layer separation in conditions of localized heat transfer is investigated at low subsonic velocity through wind-tunnel measurements and linear stability analysis. A backward-facing step flow is subjected to a stationary temperature variation generated by Peltier elements installed on the test model directly downstream of the separation line. The experimental and theoretical data clarify the response of velocity disturbances in the separation region to the temperature variation, the latter appearing primarily as a modifier of the initial wave spectrum of the amplifying separated layer oscillations.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.4975392