The delay of turbulent boundary layer separation by oscillatory active control

Y. Katz; B. Nishri; I. Wygnanski

doi:10.1063/1.857555

The delay of turbulent boundary layer separation by oscillatory active control

Y. Katz
, B. Nishri
, I. Wygnanski

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

The flow outside a solid wedge that abruptly diverges at an angle of 18° was investigated experimentally. A turbulent boundary layer, which separated at the discontinuity and turned into a mixing layer downstream of it, reattached as a result of harmonic excitation at the apex of the wedge. Preliminary results indicate that this might be an effective way to delay separation of turbulent and laminar boundary layers.

Original language	English (US)
Pages (from-to)	179-181
Number of pages	3
Journal	Physics of Fluids A
Volume	1
Issue number	2
DOIs	https://doi.org/10.1063/1.857555
State	Published - 1989

ASJC Scopus subject areas

General Engineering

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title = "The delay of turbulent boundary layer separation by oscillatory active control",

abstract = "The flow outside a solid wedge that abruptly diverges at an angle of 18° was investigated experimentally. A turbulent boundary layer, which separated at the discontinuity and turned into a mixing layer downstream of it, reattached as a result of harmonic excitation at the apex of the wedge. Preliminary results indicate that this might be an effective way to delay separation of turbulent and laminar boundary layers.",

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AB - The flow outside a solid wedge that abruptly diverges at an angle of 18° was investigated experimentally. A turbulent boundary layer, which separated at the discontinuity and turned into a mixing layer downstream of it, reattached as a result of harmonic excitation at the apex of the wedge. Preliminary results indicate that this might be an effective way to delay separation of turbulent and laminar boundary layers.

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The delay of turbulent boundary layer separation by oscillatory active control

Abstract

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