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Control of Forced Shock-wave Oscillations and Separated Boundary Layer Interaction by Arnaud Galli; Bernard Corbel; Reynald Bur is a Engineering article available to read on EtoBox.

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The purpose of the present study is to analyze the unsteady aspects of the transonic interaction between an oscillating shock-wave and a separated boundary layer in a channel flow. Oscillation of the shock-wave is forced thanks to a periodic variation of the downstream throat section given by a rotating elliptical shaft located near this throat, in the middle of the channel, inducing pressure perturbations moving upstream. The channel's lower wall is equipped with a contour profile -or a bump -allowing for flow separation. Flow field visualizations during a shock-wave oscillation cycle have been carried out using a continuous light system coupled with a high-speed camera and a spark light system coupled with a drum camera. Continuous and unsteady wall pressure measurements have been conducted. Spectral analysis of the signals has shown that response from sensors is driven by the leading shock oscillation of the λ-shock structure and also has allowed for the phase velocity of the downstream perturbations to be determined. Two-component laser Doppler velocimetry probings have been carried out and phase-averaged fields obtained thanks to a time information given by a marker located on

Who reads Control of Forced Shock-wave Oscillations and Separated Boundary Layer Interaction?

Author

Arnaud Galli; Bernard Corbel; Reynald Bur

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1270-9638)

Published

2005

Language

EN

Field

Engineering (Physical Sciences)