Frequency characteristics of fluctuating pressure on rotor blade in a propeller fan

Choon Man Jang, Masato Furukawa, Masahiro Inoue

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

A wavelet transform is introduced to analyze frequency characteristics of the fluctuating pressure on rotor blade in a propeller fan. The fluctuating pressure on the rotor blade is obtained by using the results of a large eddy simulation. The frequencies having high spectral peaks of the fluctuating pressure are determined by taking the time average of the local absolute modulus of the wavelet. The dominant frequency of the real-time pressure selected at the high pressure fluctuation region corresponds well to that of the fluctuating rotor torque and the experimental result of fan noise. It is mainly generated due to the unsteady behavior of the vortical flow, such as the tip vortex and the leading edge separation vortex, in the propeller fan. A frequency in the separation bubble region on the suction surface is higher than that of the dominant frequency caused by the vortical flow.

本文言語英語
ページ(範囲)163-172
ページ数10
ジャーナルJSME International Journal, Series B: Fluids and Thermal Engineering
46
1
DOI
出版ステータス出版済み - 2月 2003

!!!All Science Journal Classification (ASJC) codes

  • 機械工学
  • 物理化学および理論化学
  • 流体および伝熱

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