A study on the annular leakage-flow-induced vibrations (1st report, stability for translational and rotationalsingle-degree-of-freedom systems)

Dong Wei Li, Shigehiko Kaneko, Shinji Hayama

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Abstract

This study reports the stability of annular leakage-flow-induced vibrations. The pressure distribution of fluid between a fixed outer cylinder and a vibrating inner cylinder was obtained in the case of a translationally and rotationally coupled motion of the inner cylinder. The unsteady fluid force acting on the inner cylinder in the case of translational and rotational single-degree-of- freedom vibrations was then expressed in terms proportional to the acceleration, velocity, and displacement. Then the critical flow rate (at which stability was lost) was determined for an annular leakage-flow-induced vibration. Finally, the stability was investigated theoretically. It is known that instability will occur in the case of a divergent passage, but the critical flow rate depends on the passage increment in a limited range: the eccentricity of the passage and the pressure loss factor at the inlet of the passage lower the stability.

Original languageEnglish
Pages (from-to)2251-2256
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume65
Issue number635
DOIs
Publication statusPublished - 1999 Jan 1

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Keywords

  • Annular leakage-flow
  • Critical flow rate
  • Flow-induced vibration
  • Fluid force
  • Pressure distribution
  • Stability

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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