Influence of the boundary layer suction on the flow behind three-dimensional roughness on the straight wing model

An experimental study of the influence of the boundary layer suction distributed over the surface on the stationary disturbance generated upstream was carried out on a straight wing model at subsonic flow velocities. A localized three-dimensional roughness element was used to excite stationary distu...

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Bibliographic Details
Main Authors: Pavlenko, A. M., Kaprilevskaya, V. S., Kozlov, V. V., Katasonov, M. M.
Format: Conference Proceeding
Language:English
Subjects:
Boundary layers
Flow velocity
Hot wire method
Roughness
Subsonic flow
Suction
Three dimensional flow
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Summary:An experimental study of the influence of the boundary layer suction distributed over the surface on the stationary disturbance generated upstream was carried out on a straight wing model at subsonic flow velocities. A localized three-dimensional roughness element was used to excite stationary disturbances near the leading edge. Using the hot-wire method, quantitative data were obtained on the structure of the flow behind the roughness downstream with and without suction. It was shown that using the technique of suction of the boundary layer, inside which a stationary disturbance propagates, it is possible to reduce the level of pulsations by 4.6 times.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0051973