Preprints
https://doi.org/10.5194/wes-2023-32
https://doi.org/10.5194/wes-2023-32
21 Apr 2023
 | 21 Apr 2023
Status: this preprint was under review for the journal WES but the revision was not accepted.

Numerical Prediction of the Aerodynamics and Aeroacoustics of a Horizontal Axis Wind Turbine

Wen-Yu Wang and Yuh-Ming Ferng

Abstract. This study used low-frequency-based numerical methods to predict noise radiating from rotating horizontal axis wind turbine (HAWT) blades. ANSYS FLUENT was used to calculate flow parameters in the vicinity of blade surfaces, as required for the Ffowcs Williams–Hawkings (FW–H) equation. The numerical model was validated against the experimental results from the National Renewable Energy Laboratory Phase VI wind turbine blades. The coupling analysis was integrated with four Reynolds-averaged Navier–Stokes turbulence models and the FW–H equation under different boundary conditions. The SST k-ω and V2f turbulence models produced results in agreement with the available experimental pressure-coefficient and relative-velocity-distribution data. An INER 25-kW HAWT was employed to predict noise frequency distribution at nine points from the tower on the windward and leeward sides under different operating conditions. Noise frequency distributions on the windward and leeward sides showed little differences, whereas those on the left and right sides with respect to the tower were different owing to wind-shear influence. The peak amplitude of the noise was inversely proportional to the increasing distance from the tower but proportional to the wind and rotation speeds.

Wen-Yu Wang and Yuh-Ming Ferng

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2023-32', Anonymous Referee #1, 05 May 2023
    • AC1: 'Reply on RC1', Wen-Yu Wang, 17 Jul 2023
  • RC2: 'Comment on wes-2023-32', Anonymous Referee #2, 12 Jun 2023
    • AC2: 'Reply on RC2', Wen-Yu Wang, 17 Jul 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2023-32', Anonymous Referee #1, 05 May 2023
    • AC1: 'Reply on RC1', Wen-Yu Wang, 17 Jul 2023
  • RC2: 'Comment on wes-2023-32', Anonymous Referee #2, 12 Jun 2023
    • AC2: 'Reply on RC2', Wen-Yu Wang, 17 Jul 2023
Wen-Yu Wang and Yuh-Ming Ferng
Wen-Yu Wang and Yuh-Ming Ferng

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Short summary
ANSYS FLUENT was used to simulate and compute the aerodynamic flow characteristics in different turbulence models in this study. The aerodynamic simulation results were validated using experimental measurements of the NREL Phase VI wind turbine. The V2f and SST k-ω turbulence models were used in this study. The prediction results of the separation flow, wake vortex, overall flow field, and sound field characteristics were similar to the results of the LES model and the experimental data.
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