Flow instability and elastic vibration of shrouded corotating disk systems

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

Research output: Contribution to journalArticlepeer-review

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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