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In this paper, boundary layer data and wall pressure fluctuation predictions by a RANS-TNO-based trailing edge noise prediction model of a NACA 64-3-418 airfoil at Re=5E5 and 0 \(^\circ \) angle of attack are compared to direct noise computations (DNC) by means of wall-resolved Large Eddy Simulations (LES). The comparisons reveal a strong dependence of the boundary layer and noise source results on the chosen mechanism for forced transition or tripping of the flow, as well as potential flow-acoustic feedback effects which are not yet accounted for in the trailing edge noise model.

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LES Investigation into Wind Turbine Trailing Edge Noise Modelling Parameters of the TNO-Based Prediction Tool IAGNoise+

  • 会议论文

  • 发表日期：

    2026年

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  • Sabrina Haubold,
  • Andrea Beck,
  • Thorsten Lutz

摘要

In this paper, boundary layer data and wall pressure fluctuation predictions by a RANS-TNO-based trailing edge noise prediction model of a NACA 64-3-418 airfoil at Re=5E5 and 0 \(^\circ \) angle of attack are compared to direct noise computations (DNC) by means of wall-resolved Large Eddy Simulations (LES). The comparisons reveal a strong dependence of the boundary layer and noise source results on the chosen mechanism for forced transition or tripping of the flow, as well as potential flow-acoustic feedback effects which are not yet accounted for in the trailing edge noise model.