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Visualization of transition

Published online by Cambridge University Press:  29 March 2006

F. X. Wortmann
F. X. Wortmann
Affiliation:
Institut für Aerodynamik und Gasdynamik der Universität Stuttgart
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Abstract

In an experimental study the development of transition downstream of Görtler vortices was investigated. With the tellurium method it was possible to distinguish beyond the Görtler vortices to successive instability modes. The first deforms the vortex pattern in a steady way and produces between each vortex pair boundary-layer profiles with two points of inflexion. When this has been established another instability mode starts, consisting of regular three-dimensional oscillations. By detailed flow visualization a nearly complete picture of the different flow patterns can be obtained.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 38 , Issue 3 , 18 September 1969 , pp. 473 - 480
Copyright
© 1969 Cambridge University Press

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References

Clutter, D. W. & Smith, A. M. O. 1961 Aerospace Engng, 20, 24.
Hama, F. R. 1959 Phys. Fluids, 2, 664.
Wortmann, F. X. 1953 Z. angew. Phys. 5, 201.
Wortmann, F. X. 1964 Proceed. XI. Int. Congr. Appl. Mech. Munich, p. 815.