エオルス音の予測に関する研究  断面形状が発生音に及ぼす影響

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  • Study on Prediction of Aerodynamic Sound Radiated from Various Cylinders. Effect of Cross-Section on Aeolian Tones.
  • エオルスオン ノ ヨソク ニ カンスル ケンキュウ ダンメン ケイジョウ ガ ハッセイオン ニ オヨボス エイキョウ

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The aerodynamic sound generated from cylinders with three different cross-sections (●, ■, ♦) at Reynolds number of 20 000 are predicted by use of acoustic analogy method that is based on Curle's equation. In this study, the sound source is evaluated by the two-dimensional CFD technique are the correlation length obtained by the experiment. As a result, the predicted values of sound pressure are in reasonable agreement with the experimental ones. However, the relative comparison of the aerodynamic sound due to the various cross-sections can't be discussed by this method.

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