Visualization of rotating vortex in a centrifugal blower impeller

D. Tsugita, C. K.P. Kowshik, Y. Ohta*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Rotating instability, RI, is a well-known unsteady phenomenon occurring in the off-design operation of various types of turbomachinery systems. However, the generation mechanism as well as its unsteady characteristics, especially in the case of centrifugal machines, has not yet been investigated in detail. In the present paper, therefore, research attention is focused on an unsteady vortex rotating along the impeller periphery, which is considered to be the cause of the RI, and its characteristics are investigated by experiments and two kinds of CFD analyses. A significant amplitude increase within a frequency band below the blade passing frequency is found to be caused by irregular change of the vortex rotating speed.

本文言語English
ページ(範囲)207-214
ページ数8
ジャーナルJournal of Visualization
15
3
DOI
出版ステータスPublished - 2012 8 1

ASJC Scopus subject areas

  • 凝縮系物理学
  • 電子工学および電気工学

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