Flow instability and elastic vibration of shrouded corotating disk systems

R. Fukaya, S. Obi, S. Masuda, M. Tokuyama

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The interaction between flow instability and elastic vibration of shrouded corotating disks is investigated. Simultaneous measurements of velocity fluctuation and disk vibration are performed in a 3.5-in hard disk drive, which was modified to ensure geometrical axisymmetry. The dependence on Reynolds number of velocity fluctuation and disk vibration is examined. Spectral analysis and cross-correlation measurements employing hotwire anemometry reveal the wave number, the speed of rotation, the coupling of instabilities on both sides of a disk as well as the axial extent of the unstable flow structure. The role of flow instability on disk vibration is emphasized.

Original languageEnglish
Pages (from-to)369-373
Number of pages5
JournalExperiments in Fluids
Volume33
Issue number3
DOIs
Publication statusPublished - 2002 Sep

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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