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Experiments in Fluids

, Volume 27, Issue 5, pp 392–399 | Cite as

The study of self-sustained oscillating plane jet flow impinging upon a small cylinder

  • F.-B. Hsiao
  • Y.-W. Chou
  • J.-M. Huang
Originals

Abstract

 Experimental studies of a plane jet impinging upon a small circular cylinder are conducted by hot-wire measurements. The cylinder is located on the jet centerline within the potential-core region. The jet–cylinder interactions on the instability shear layer frequency, the cylinder wake shedding frequency, and the induced self-sustained oscillation phenomenon are carefully investigated. Test data indicate that the self-sustained flow oscillation is mainly generated by the resonant effect of the flow between the jet exit and the cylinder. Its resonant frequency is found to vary linearly and exhibits jump-stage pattern as a function of the distance between the jet exit and the cylinder. The feedback mechanism and the hydrodynamic instability theorem are proposed to predict correctly the frequency jump position, wave number and the convection speed of the self-sustained oscillating flow for different jet exit velocities.

Keywords

Cylinder Wake Instability Shear Layer Convection Speed Instability Theorem Layer Frequency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • F.-B. Hsiao
    • 1
  • Y.-W. Chou
    • 1
  • J.-M. Huang
    • 2
  1. 1.Institute of Aeronautics and Astronautics, National Cheng Kung University Tainan, Taiwan, R.O.C.TW
  2. 2.Aeronautical Research Laboratory Chung Shan Institute of Science and Technology Taichung, Taiwan, R.O.C.TW

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