Liepmann, H. W. and Nosenchuck, D. M. (1982) Active control of laminar-turbulent transition. Journal of Fluid Mechanics, 118 . pp. 201-204. ISSN 0022-1120 http://resolver.caltech.edu/CaltechAUTHORS:20120717-085352812
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Instability waves, commonly called T-S waves, can be introduced in a laminar boundary layer by periodic heating of flush-mounted heating elements. Experiments have demonstrated that nearly complete cancellation of a T-S wave excited in this way can be achieved by using a second downstream heating element with a suitable phase shift. As one application of the technique, a single element together with a feedback loop activated by measured wall shear stress has been used to reduce the amplitude of naturally occurring laminar instability waves. A significant increase in the transition Reynolds number has been achieved.
|Additional Information:||© 1982 Cambridge University Press. Received 21 November 1981. Published online: 20 April 2006.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||17 Jul 2012 17:11|
|Last Modified:||26 Dec 2012 15:34|
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