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Dynamical Instabilities and Transition to Turbulence in Spherical Gap Flows

  • K. Bühler
  • J. Zierep

Abstract

The transition from laminar to turbulent spherical gap flow is investigated by analysing the dynamical behaviour of the occuring instabilities. The structure of the secondary instabilities is observed by flow visualization. Time-dependent wall shear stress signals are measured at different positions on the outer sphere and analysed to obtain the power spectra. Starting from the different bifurcation solutions different routes of the laminar-turbulent transition are considered.

Keywords

Reynolds Number Shear Wave Wall Shear Stress Outer Sphere Meridional Plane 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • K. Bühler
    • 1
  • J. Zierep
    • 1
  1. 1.Institut für Strömungslehre und StrömungsmaschinenUniversität (TH)Karlsruhe 1Fed. Rep. of Germany

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