A method for measuring recompression shock unsteadiness applied to two supersonic wakes

A method for measuring recompression shock unsteadiness applied to two supersonic wakes The recompression shock system in blunt-base cylinder wakes at 0° and 10° angles-of-attack to an M=2.46 freestream is visualized by planar laser scattering, allowing the instantaneous position of the shock to be determined over a wide region of the flow. The recompression shock at α=0° is highly branched and appears to be quite weak. The shock appears to be stronger at α=10°, with far less branching. Correlation analysis for the α=10° wake indicates that fluctuations in the shock position tend to be correlated over relatively long streamwise distances. Analysis of the shock angle for the angle-of-attack wake shows a significant variation in the local angle of the shock, with trends similar to those seen for the unsteadiness in the shock position. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

A method for measuring recompression shock unsteadiness applied to two supersonic wakes

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Publisher
Springer-Verlag
Copyright
Copyright © 2005 by Springer-Verlag
Subject
Engineering
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-005-0994-4
Publisher site
See Article on Publisher Site

Abstract

The recompression shock system in blunt-base cylinder wakes at 0° and 10° angles-of-attack to an M=2.46 freestream is visualized by planar laser scattering, allowing the instantaneous position of the shock to be determined over a wide region of the flow. The recompression shock at α=0° is highly branched and appears to be quite weak. The shock appears to be stronger at α=10°, with far less branching. Correlation analysis for the α=10° wake indicates that fluctuations in the shock position tend to be correlated over relatively long streamwise distances. Analysis of the shock angle for the angle-of-attack wake shows a significant variation in the local angle of the shock, with trends similar to those seen for the unsteadiness in the shock position.

Journal

Experiments in FluidsSpringer Journals

Published: May 26, 2005

References

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