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The effect of a wall normal vibration on a turbulent boundary layer

Regan, C. and Bénard, Emmanuel and Raghunathan, Srinivasan and Riordan, David and Linton, Alan J. The effect of a wall normal vibration on a turbulent boundary layer. (2002) In: 40th AIAA Aerospace Sciences Meeting and Exhibit, 14 January 2002 - 17 January 2002 (Reno, United States). (Unpublished)

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This paper reports the results of an experimental investigation into the effect of a wall normal vibration on a zero pressure gradient turbulent boundary layer over a flat plate (690mm * 200mm * 12mm). Tests were conducted in a subsonic wind tunnel at 17m/s. An electromagnetic shaker, in conjunction with a vibration control system was used to supply and maintain a controlled sinusoidal plate oscillation. Phase averaged velocity profiles indicate that there is a negligible effect, due to vibration, on the mean boundary layer properties. Phase dependency plots show that Delta* and Theta exhibit a weak phase shift in relation to the plate vibration, whereas d is phase locked. Probability density distributions indicate a slight positive shift in velocity distribution for the 80Hz test case. Analysis in the frequency domain shows that the overall disturbance effect is limited to a very narrow bandwidth centered on the plate vibration frequency.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference without published proceedings
Uncontrolled Keywords:
Institution:Other partners > Bombardier Inc. (CANADA)
Other partners > Queen's University Belfast - QUB (UNITED KINGDOM)
Laboratory name:
Deposited On:26 Jan 2012 10:16

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