流れ場の時系列解析に基づく空力騒音の実験的評価法(流体工学,流体機械) Experimental Evaluation Methods of Aeroacoustic Noise Based on the Time Series Analysis of Flow Field(Fluids Engineering)

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We propose experimental evaluation methods for dipole sound based on the vortex sound theory. By using time-resolved PIV in a wind tunnel test, we measured time series data of the unsteady two-dimensional flow around a circular cylinder which is suitable for applying the theory and validating the methods. The sound pressure in a far field estimated experimentally from PIV measurement is validated through comparison with correlation analysis with the measured sound pressure. Furthermore, we performed a correlation analysis between the source intensity defined as the integrand in the equation of the vortex sound theory and the measured sound pressure to clarify the relationship between the estimated dipole sound and measured flow field. As a result, it is shown that the estimated sound pressure can detect the Aeolian tone due to the Karman vortex shedding. Periodic fluctuation around the shear layer separation regions and the vortex formation region in the wake causes the estimated dipole sound.

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  • 日本機械学会論文集 B編

    日本機械学会論文集 B編 75(755), 1436-1445, 2009

    一般社団法人 日本機械学会

参考文献:  15件中 1-15件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    110007339813
  • NII書誌ID(NCID)
    AN00187441
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03875016
  • NDL 記事登録ID
    10388139
  • NDL 雑誌分類
    ZN11(科学技術--機械工学・工業)
  • NDL 請求記号
    Z16-109
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  J-STAGE 
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