TY - JOUR
T1 - Flow instability and elastic vibration of shrouded corotating disk systems
AU - Fukaya, R.
AU - Obi, S.
AU - Masuda, S.
AU - Tokuyama, M.
PY - 2002/9
Y1 - 2002/9
N2 - 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.
AB - 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.
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U2 - 10.1007/s00348-002-0418-7
DO - 10.1007/s00348-002-0418-7
M3 - Article
AN - SCOPUS:0036739766
VL - 33
SP - 369
EP - 373
JO - Experiments in Fluids
JF - Experiments in Fluids
SN - 0723-4864
IS - 3
ER -