Wake Patterns of a Piston Gliding in a Rotating Circular Duct

  • W. J. Hiller
  • T. A. Kowalewski
Conference paper
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)


The flow around a piston gliding in a rotating circular duct filled with a liquid is observed experimentally. For Re-numbers up to ≈ 1150 the flow is laminar and stationary. The streamline patterns in front and behind the body are 3-dimensional and of different structure. At increasing Re-numbers an oscillatory mode appears. It originates from the back wake of the body and is accompanied by a train of separated flow regions propagating slowty along the channel to the front wake where they disappear.


Saddle Point Axial Velocity Stagnation Point Front Face Outer Core 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • W. J. Hiller
    • 1
  • T. A. Kowalewski
    • 1
  1. 1.Max-Planck-Institut für StrömungsforschungGöttingenGermany

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