Numerical Simulation of Vortex Behavior and Aerodynamic Sound Generated from Wing-tip

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  • 翼端渦の挙動と発生する空力音の数値解析
  • ヨク タンウズ ノ キョドウ ト ハッセイ スル クウリキオン ノ スウチ カイセキ

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Abstract

Presented in this paper is large eddy simulation (LES) of turbulent incompressible flow around NACA0012 wing tip and numerical prediction of aerodynamic sound in the far field. Reynolds number based on the chord length of the wing and uniform velocity is 3×105 and the angle of attack is 9 degrees. Computational grid consists of nearly 10 million grid points. LES results give good corelation with measured data. It made clear that two primary vortexes are generated from the upper and lower edge of the wing tip. The far-field sound predicted by Lighthill tensor and Curle’s equation both show a similar tendency to the measured data.<br>

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 62 (1), 10-14, 2010

    Institute of Industrial Science The University of Tokyo

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