A note on spatially growing three-dimensional disturbances in a free shear layer

Author:

Michalke A.

Abstract

It does not seem to be possible to prove analytically that an incompressible, inviscid free shear layer is less unstable with respect to spatially growing three-dimensional disturbances than to two-dimensional ones. For this reason a numerical calculation for the special case of the hyperbolic tangent velocity profile was performed. It was found that even for spatially growing disturbances the amplification of three-dimensional disturbances is smaller than for two-dimensional ones.

Publisher

Cambridge University Press (CUP)

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Reference25 articles.

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3. Guerri, L. & Stella, P. EURATOM Ispra . (To be published.)

4. Liapounoff, M. A. 1949 Probléms général de la stabilité du mouvement . Princeton University Press.

5. Emmons, H. W. , Chang, C. T. & Watson, B. C. 1960 J. Fluid Mech. 7, 177.

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