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The present paper consists on numerical investigation of new proposed method-ology dedicated for HAWT noise generation and propagation predictions. It is based on the superposition of aerodynamic and aeroacoustics simulations with a particular emphasis on segregating aerodynamic calculations from sound propagation. The aerodynamic computations are rooted on CFD actuator disk method, which combines the blade element theory and unsteady Navier-Stokes equations in order to model the effect of the HAWT rotor blades on the flow field. For the algebraic system of equations closer, the two equations k-ε turbulence model has been deployed to capture the near-field turbulent flow in the vicinity of the HAWT rotor. The aeroacoustics calculations have been carried out by extracting acoustic pressure, based on Ffowcs Williams-Hawkings analogy, throughout the precompiled libAcoustics dynamic library in OpenFOAM; then injected on AeroAcoustics code for the far-field noise propagation predictions by solving the Linearized Euler Equations. The proposed approach has been validated through comparative analysis done on the NREL Phase VI HAWT model. The results demonstrate the proposed approach’s consistency on predicting wind turbine noise levels across varying inflow conditions.

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Validation of a Hybrid Approach for Wind Turbine Noise Prediction Using the Linearized Euler Equations

  • 章节

  • 发表日期：

    2025年

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  • Abdessabour Amoura,
  • Sofiane Khelladi,
  • Arezki Smaili,
  • Mohammed Nadjib Hamlaoui

摘要

The present paper consists on numerical investigation of new proposed method-ology dedicated for HAWT noise generation and propagation predictions. It is based on the superposition of aerodynamic and aeroacoustics simulations with a particular emphasis on segregating aerodynamic calculations from sound propagation. The aerodynamic computations are rooted on CFD actuator disk method, which combines the blade element theory and unsteady Navier-Stokes equations in order to model the effect of the HAWT rotor blades on the flow field. For the algebraic system of equations closer, the two equations k-ε turbulence model has been deployed to capture the near-field turbulent flow in the vicinity of the HAWT rotor. The aeroacoustics calculations have been carried out by extracting acoustic pressure, based on Ffowcs Williams-Hawkings analogy, throughout the precompiled libAcoustics dynamic library in OpenFOAM; then injected on AeroAcoustics code for the far-field noise propagation predictions by solving the Linearized Euler Equations. The proposed approach has been validated through comparative analysis done on the NREL Phase VI HAWT model. The results demonstrate the proposed approach’s consistency on predicting wind turbine noise levels across varying inflow conditions.