インデューサ付き遠心ファンの空力特性と騒音に関する研究 : 出口角およびスキュー角の影響 Characterization of Aerodynamics and Noise in a Centrifugal Fan with Inducer : Effects of Outlet and Skew Angles of Blade

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Characteristics of aerodynamics and noise in the centrifugal fan with inducer was investigated with respect to the two parameters: outlet angle and skew angle of the impeller. It is shown that the outlet angle considerably effects on the turbulent noise but the skew angle of the blade effects barely on that. From the view points of aerodynamics and specific noise level, the optimum value of the outlet angle is about48 degree and that of the skew angle is about 10 degree. Moreover, we proposed a new method to calculate the width of wake which is an important parameter to controll the turbulent noise. We predicted the sound pressure level of the turbulent noise with the help of predicted width of wake and inlet relative velocity.The experimental values of the overall turbulent noise with L-weighting and A-weighting functions agreed well with predicted values.

収録刊行物

  • ターボ機械

    ターボ機械 31(4), 237-245, 2003-04-10

    日本工業出版

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被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10010506933
  • NII書誌ID(NCID)
    AN00004836
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03858839
  • NDL 記事登録ID
    6515809
  • NDL 雑誌分類
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL 請求記号
    Z16-978
  • データ提供元
    CJP書誌  CJP引用  NDL  IR 
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