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Incipient Separation of a Turbulent Boundary Layer at High Reynolds Number in Two-Dimensional Supersonic Flow over a Compression Corner

Thomke, G. J. and Roshko, A. (1969) Incipient Separation of a Turbulent Boundary Layer at High Reynolds Number in Two-Dimensional Supersonic Flow over a Compression Corner. . https://resolver.caltech.edu/CaltechAUTHORS:20170726-143226034

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Abstract

An experimental study was made of the conditions necessary to promote incipient separation of a turbulent boundary layer in two-dimensional supersonic flow over a compression corner. The aim was to extend Kuehn's earlier results to higher Reynolds numbers. Measurements were obtained for Mach numbers in the range 2 to 5 and at Reynolds numbers , based on the boundary-layer thickness, in the range 10^6 to 10^7, nearly two orders of magnitude greater than those reported earlier. The main result was that the trend with Reynolds number established by Kuehn for the pressure rise for incipient separation does not continue to the high Reynolds number values of the present experiments; in fact, it is reversed. Pressure distributions were also obtained for conditions with and without separation. For the latter case, the upstream influence was considerably less than one boundary-layer thickness end the initial part of the pressure rise was practically a jump, suggesting that the oblique shock has its origin deep in the boundary layer.


Item Type:Report or Paper (Report)
Related URLs:
URLURL TypeDescription
https://ntrs.nasa.gov/search.jsp?R=19690027911OrganizationNASA Technical Reports Server
Additional Information:Issued by Originator as Report DAC-59819. Prepared under Contract No. NAS7-589 by McDonnell Douglas Astronautics Company - Western Division Santa Monica, Calif. for Ames Research Center, National Aeronautics and Space Administration.
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Funding AgencyGrant Number
NASANAS7-589
Record Number:CaltechAUTHORS:20170726-143226034
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170726-143226034
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79437
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 Jul 2017 22:02
Last Modified:03 Oct 2019 18:20

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