Spiral vortices in boundary layer transition regime on a rotating disk

R. Kobayashi, Y. Kohama, Ch Takamadate

研究成果: Article査読

147 被引用数 (Scopus)

抄録

Behavior of spiral vortices on a disk rotating in still fluid is studied theoretically and experimentally in detail. A linear stability analysis, in which effects of streamline curvature and Coriolis force are considered, gives a critical Reynolds number at the onset of instability close to the one measured here by using a hot wire probe. Gradient of the vortex axis is determined under a condition of the maximum amplification. Flow patterns in the transition regime are experimentally visualized. The results show that the number of the spiral vortices is 31 or 32 as mean value and the gradient of the vortex axis decreases from 14° to 7° as the local Reynolds number is increased.

本文言語English
ページ(範囲)71-82
ページ数12
ジャーナルActa Mechanica
35
1-2
DOI
出版ステータスPublished - 1980 3月
外部発表はい

ASJC Scopus subject areas

  • 計算力学
  • 機械工学

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