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Control of laminar-instability waves using a new technique

Liepmann, H. W. and Brown, G. L. and Nosenchuck, D. M. (1982) Control of laminar-instability waves using a new technique. Journal of Fluid Mechanics, 118 . pp. 187-200. ISSN 0022-1120. http://resolver.caltech.edu/CaltechAUTHORS:20120627-155913693

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Abstract

A new technique using surface-film activators has been developed to induce and control laminar-instability waves by periodic heating. A flat plate was instrumented and installed in the GALCIT High-speed Water Tunnel with flush-mounted surface heaters and probes. Extremely two-dimensional naturally occurring Tolmien-Schlichting (TS) waves were observed along with the subsequent formation of turbulent spots. Laminar-instability waves were then excited in a controlled fashion using the surface-mounted heaters. A preliminary experiment on cancellation of excited laminar-instability waves was carried out. Finally, turbulent spots were produced using amplitude-modulated bursts to form Gaussian TS wave packets. Flow visualization, along with wall shear measurements, was used to infer the velocity and vorticity field near the wall.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1017/S0022112082001025DOIUNSPECIFIED
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=399770PublisherUNSPECIFIED
Additional Information:© 1982 Cambridge University Press. Received 30 June 1981; Published Online 20 April 2006. The authors gratefully acknowledge support of this work by the Office of Naval Research under Contracts NO00 14-78-C-0457.
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Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-78-C-0457
Record Number:CaltechAUTHORS:20120627-155913693
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120627-155913693
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ID Code:32160
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:28 Jun 2012 14:40
Last Modified:26 Dec 2012 15:25

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