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Experimental stability studies in wakes of two-dimensional slender bodies at hypersonic speeds

Behrens, W. and Ko, D. R. S. (1971) Experimental stability studies in wakes of two-dimensional slender bodies at hypersonic speeds. AIAA Journal, 9 (5). pp. 851-857. ISSN 0001-1452. https://resolver.caltech.edu/CaltechAUTHORS:20170731-133752887

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Abstract

Experimental stability studies were conducted in the transition region from laminar to turbulent flow in wakes of slender wedges and a flat plate at Mach number 6. As in low-speed flat plate wakes, transition from laminar to turbulent flow may be divided into a linear and a nonlinear instability region. Inviscid linear stability theory predicts well the growth of fluctuations and amplitude distribution in the linear region. In the nonlinear region similarities with low-speed wakes exist. Characteristic persisting peaks in the power spectra are observed. Based on these peak frequencies a nearly universal Strouhal number of fb_0/u∞ = 0.3 was found for both incompressible and hypersonic wake flows. A theoretical approach to predict the development of mean flow and flow fluctuations in the nonlinear region as employed by Ko, Kubota, and Lees in slender body low-speed wakes appears equally applicable for hypersonic wakes.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/3.6285DOIArticle
https://arc.aiaa.org/doi/10.2514/3.6285PublisherArticle
Additional Information:© 1971 AIAA. Received July 10, 1070; revision received November 30, 1970. Research supported by the U.S. Army Research Office and Advanced Research Projects Agency under Contract DA-31-124-ARO(D)-33. It is part of Project DEFENDER sponsored by the Advanced Research Projects Agency. The authors are grateful to L. Lees and T. Kubota for many discussions and helpful suggestions.
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)UNSPECIFIED
Advanced Research Projects Agency (ARPA)DA-31-124-ARO(D)-33
Issue or Number:5
Record Number:CaltechAUTHORS:20170731-133752887
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170731-133752887
Official Citation:Experimental stability studies in wakes of two- dimensional slender bodies at hypersonic speeds W. BEHRENS and D. R. S. KO AIAA Journal 1971 9:5, 851-857
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79609
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:01 Aug 2017 19:37
Last Modified:03 Oct 2019 18:21

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