Effect of sound absorbing wall liners on unsteady aerodynamic forces of a cascade in a supersonic flow. 2nd report. Vibrating rotors and rotors interacting with the inlet distortion

Masanobu Namba, Nobuhiko Yamasaki

研究成果: Contribution to journalArticle査読

抄録

A three-dimensional theory is developed for a linear supersonic cascade moving between parallel walls, vibrating or interacting with an inlet distortion to predict the effect of sound absorbing wall liners on the unsteady aerodynamic forces. A side wall of the model is partially composed of a sound absorbing liner with uniform acoustic admittance, which is assumed to depend on the frequency sensed by the wall liner. The lined section of the wall is confined to the portion swept by blades. The change of the aerodynamic work of the vibrating rotor blades with changes of the cavity depth of the wall liner becomes conspicuous when the wall admittance for the acoustic mode of the least circumferential order is in a certain effective range. The wall liner effect on the intensity of sound generated by interaction with an inlet distortion is larger for downstream propagating waves than for upstream propagating waves.

本文言語英語
ページ(範囲)3577-3585
ページ数9
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
53
496
DOI
出版ステータス出版済み - 1987

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 機械工学

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