# Aerodynamic and aeroacoustic for wind turbine

## Abstract

This paper describes a hybrid approach forpredicting noise radiated from the rotating Wind Turbine (HAWT) blades, where the sources are extracted from an unsteady Reynolds-Averaged-Navier Stocks (URANS) simulation, ANSYS CFX 11.0, was used to calculate The near-field flow parameters around the blade surface that are necessary for FW-H codes. Comparisons with NREL Phase II experimental results are presented with respect to the pressure distributions for validating a capacity of the solver to calculate the near-field flow on and around the wind turbine blades, The results show that numerical data have a good agreement with experimental. The acoustic pressure, presented as a sum of thickness and loading noise components, is analyzed by means of a discrete fast Fourier transformation for the presentation of the time acoustic time histories in the frequency domain. The results convincingly show that dipole source noise is the dominant noise source for this wind turbine.

- Authors:

- Centre de Développement des Energies Renouvelables (cder). Alger (Algeria)
- Université des Sciences et de Technologie Haouari Boumdienne (USTHB). Alger (Algeria)

- Publication Date:

- OSTI Identifier:
- 22391175

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: AIP Conference Proceedings; Journal Volume: 1648; Journal Issue: 1; Conference: ICNAAM-2014: International Conference on Numerical Analysis and Applied Mathematics 2014, Rhodes (Greece), 22-28 Sep 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 17 WIND ENERGY; A CODES; CAPACITY; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; DIPOLES; FOURIER TRANSFORMATION; LOADING; NATIONAL RENEWABLE ENERGY LABORATORY; NAVIER-STOKES EQUATIONS; NOISE; REYNOLDS NUMBER; SURFACES; THICKNESS; WIND TURBINES

### Citation Formats

```
Mohamed, Maizi, and Rabah, Dizene.
```*Aerodynamic and aeroacoustic for wind turbine*. United States: N. p., 2015.
Web. doi:10.1063/1.4913148.

```
Mohamed, Maizi, & Rabah, Dizene.
```*Aerodynamic and aeroacoustic for wind turbine*. United States. doi:10.1063/1.4913148.

```
Mohamed, Maizi, and Rabah, Dizene. Tue .
"Aerodynamic and aeroacoustic for wind turbine". United States.
doi:10.1063/1.4913148.
```

```
@article{osti_22391175,
```

title = {Aerodynamic and aeroacoustic for wind turbine},

author = {Mohamed, Maizi and Rabah, Dizene},

abstractNote = {This paper describes a hybrid approach forpredicting noise radiated from the rotating Wind Turbine (HAWT) blades, where the sources are extracted from an unsteady Reynolds-Averaged-Navier Stocks (URANS) simulation, ANSYS CFX 11.0, was used to calculate The near-field flow parameters around the blade surface that are necessary for FW-H codes. Comparisons with NREL Phase II experimental results are presented with respect to the pressure distributions for validating a capacity of the solver to calculate the near-field flow on and around the wind turbine blades, The results show that numerical data have a good agreement with experimental. The acoustic pressure, presented as a sum of thickness and loading noise components, is analyzed by means of a discrete fast Fourier transformation for the presentation of the time acoustic time histories in the frequency domain. The results convincingly show that dipole source noise is the dominant noise source for this wind turbine.},

doi = {10.1063/1.4913148},

journal = {AIP Conference Proceedings},

number = 1,

volume = 1648,

place = {United States},

year = {Tue Mar 10 00:00:00 EDT 2015},

month = {Tue Mar 10 00:00:00 EDT 2015}

}