部分スパン数値流体解析結果を利用した柱状物体からの空力音推定法 : 推定手法の構築および実証実験

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タイトル別名
  • ESTIMATION TECHNIQUE FOR AERODYNAMIC SOUND RADIATION FROM A CYLINDRICAL BODY UTILIZING PARTIAL-SPAN CFD RESULTS : Its construction and validation through experimental analysis
  • ブブン スパン スウチ リュウタイ カイセキ ケッカ オ リヨウ シタ チュウジョウ ブッタイ カラ ノ クウリキオン スイテイホウ スイテイ シュホウ ノ コウチク オヨビ ジッショウ ジッケン

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抄録

Estimation technique of aerodynamic sound radiation from a cylindrical body using results of partial-span CFD computation is presented. The technique replaces the calculation of Curie equation in Lighthill-Curle computational aeroacoustics technique, and is based on Morse-Ingard's and Goldstein's theory and coherence model function. The validation of the model function and the technique through wind-tunnel experiment results 1) measured coherence between surface fluid forces on the body surface shows good agreement with the model function, and 2) reasonable agreement is obtained between measured SPL at a receiving point and estimated SPL using the technique.

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