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. doi:10.1017/S0022112082001025. https://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 | |||||||||
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| 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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| DOI: | 10.1017/S0022112082001025 | |||||||||
| Record Number: | CaltechAUTHORS:20120627-155913693 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20120627-155913693 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 32160 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | INVALID USER | |||||||||
| Deposited On: | 28 Jun 2012 14:40 | |||||||||
| Last Modified: | 09 Nov 2021 21:25 |
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