Velocity profile measurements in high Reynolds number Taylor-Couette flow for pure outer-cylinder rotation

ORAL

Abstract

Using Laser Doppler Anemometry, we measured azimuthal and axial velocity profiles inside the gap of a Taylor-Couette apparatus, spinning only the outer cylinder at a varying Reynolds number from $1.4 \times 10^5$ to $1.4 \times 10^6$. The system has a radius ratio of 0.716 and an aspect ratio of 11.68, and the end plates are attached to the outer cylinder. The azimuthal profiles were found to be notably different from the laminar velocity profile due to the influence of the end plates. We analyzed the end effects by studying the Ekman and Stewartson boundary layer dynamics in Taylor-Couette flow.

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Authors

  • Sander Huisman

    Physics of Fluids group, University of Twente

  • Dennis van Gils

    Physics of Fluids group, University of Twente

  • Chao Sun

    The University of Twente, University of Twente, Physics of Fluids group, University of Twente, University of Twente, The Netherlands, Physics of Fluids Group, University of Twente

  • GertJan van Heijst

    Turbulence and Vortex Dynamics, Technical University of Eindhoven

  • Detlef Lohse

    The University of Twente, University of Twente, Physics of Fluids group, University of Twente, Physics of Fluids, Twente University, The Netherlands, University of Twente, The Netherlands, Physics of Fluids, University of Twente, Physics of Fluids Group, University of Twente