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Symposium Transsonicum III pp 441–463Cite as

Unsteady Phenomena

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Summary

The large variety of unsteady phenomena in transonic flow is divided in four main groups depending on if there is a crucial influence of viscosity or not on the mechanism of unsteadiness and if it is a forced or self-excited non-stationary behaviour. The main forced, inviscid interactions are due to gusts, shock waves and changes of gas properties. Forced viscid interactions are unsteady separations by shocks and vortices. The inviscid self-excited instabilities can be seen in flutter, cavity oscillations and condensation oscillations. Self-excited instabilities of the viscid type occur both for shock boundary-layer and shock shear-layer interaction.

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  1. Max-Planck-Institut für Strömungsforschung, D-3400, Göttingen, Germany

    G. E. A. Meier

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  1. G. E. A. Meier
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  1. Institut für Strömungslehre und Strömungsmaschinen, Universität Karlsruhe TH, Kaiserstraße 12, D-7500, Karlsruhe, Deutschland

    J. Zierep

  2. Institut für Theoretische Strömungsmechanik, Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt, Bunsenstraße 10, D-3400, Göttingen, Deutschland

    H. Oertel Jr.

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Meier, G.E.A. (1989). Unsteady Phenomena. In: Zierep, J., Oertel, H. (eds) Symposium Transsonicum III. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83584-1_36

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  • DOI: https://doi.org/10.1007/978-3-642-83584-1_36

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