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Experimental investigation of the spherical Couette flow using electrodiffusion technique

  • Mohamed MahloulEmail author
  • Ammar Mahamdia
  • Magdalena Kristiawan
Regular Article
  • 12 Downloads

Abstract.

In this paper, we present an experimental study of the occurrence of different flow modes between two coaxial rotating spheres. The electrodiffusion (ED) method and the visualization technique were used to determine the various flow regimes for an aspect ratio \( \Gamma=H/d\) ranging from 18 to 21, and for different values of the Taylor number Ta . The dimensionless gap has width \( \beta=0.107\) . The inner sphere rotates while the outer one is at rest. The visualization allowed to identify several bifurcation paths during the laminar-turbulent transition. Furthermore, the ED method permitted the measurement of the coefficient of friction in the inner wall of the outer sphere. The flow is analyzed by varying the iso-correlation and the phase space obtained by the ED method.

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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Mohamed Mahloul
    • 1
    • 2
    Email author
  • Ammar Mahamdia
    • 1
    • 2
  • Magdalena Kristiawan
    • 3
  1. 1.Department of PhysicsSuperior School of Applied Sciences of AlgiersAlgiersAlgeria
  2. 2.Department of Energetics and fluid mechanics, Faculty of PhysicsUniversity of Sciences and Technology Houari BoumedieneAlgiersAlgeria
  3. 3.INRA, UR 1268 Biopolymers Interactions and AssembliesNantesFrance

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