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Wind power and sound generation aero-acoustic noise prediction for wind turbines

The noise produced by wind turbines has become a matter of concern during the last few years, especially since larger wind turbines are being built and some of them near populated areas. The main purpose of this thesis is to create a model that predicts the overall A-weighted sound pressure levels o...

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Autor Principal: McBride, Sterling
Otros Autores: Chiriboga, Patricio (dir)
Formato: Tesis de Pregrado
Publicado: Quito: USFQ, 2015 2015
Materias:
Sonido
Turbinas
Presión Sonora
Mediciones
CIENCIAS
FÍSICA
Acceso en línea:http://repositorio.usfq.edu.ec/handle/23000/4141
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spelling oai-23000-41412017-04-20T13:43:17Z Wind power and sound generation aero-acoustic noise prediction for wind turbines McBride, Sterling Chiriboga, Patricio (dir) Burdisso, Ricardo Sonido Turbinas Presión Sonora Mediciones CIENCIAS FÍSICA The noise produced by wind turbines has become a matter of concern during the last few years, especially since larger wind turbines are being built and some of them near populated areas. The main purpose of this thesis is to create a model that predicts the overall A-weighted sound pressure levels on a spherical grid around a wind turbine. In this case, the wind turbine used for modeling was Nordtank NTK 500/4, and in order to obtain results, experimental wind tunnel airfoil noise data was used. The obtained results show that the overall A-weighted sound pressure levels on the sphere grid surrounding the wind turbine have maximum values that are around 35 [dBa] and minimum of 0[dBa]. The highest values are located on the poles of the sphere, parallel to the plain of rotation of the blades. The lowest values are located at the center of the sphere, perpendicular to the plain of rotation of the blades. Additionally, it was determined that as the blades of the wind turbine rotate, the noise is characterized by an oscillating behavior. El sonido producido por turbinas de viento se ha convertido en un asunto de preocupación durante los últimos años, especialmente debido a que con el pasar del tiempo se están construyendo turbinas de mayor tamaño, y muchas de ellas se encuentran cerca de lugares poblados. El objetivo principal de este trabajo es crear un modelo que prediga los niveles de presión de sonido [dBa] en una malla esférica alrededor de la turbina. En este caso, se ha utilizado una turbina de modelo Nordtank NTK 500/4, y para obtener los resultados deseados, se han utilizado datos experimentales realizados en un túnel de viento. Los resultados obtenidos muestran que los niveles de presión de sonido, con ponderación-A tienen valores máximos de 35 [dBa], y mínimos de 0 [dBa]. Los valores más altos se encuentran localizados en los polos de la esfera, en dirección paralela a la rotación de los alabes. Los valores más bajos se encuentran en el centro de la esfera, en dirección perpendicular a la rotación de los alabes. Adicionalmente, se observa que a medida que los alabes giran, el sonido está caracterizado por un comportamiento oscilatorio. 2015-12-21T19:54:51Z 2015-12-21T19:54:51Z 2015-05 bachelorThesis Tesis (Ingeniero Mecánico), Universidad San Francisco de Quito, Colegio de Ciencias e Ingeniería; Quito, Ecuador, 2015. http://repositorio.usfq.edu.ec/handle/23000/4141 spa openAccess http://creativecommons.org/licenses/by-nc-sa/3.0/ec/ 165 h. : il. application/pdf Quito: USFQ, 2015
institution USFQ
collection Repositorio USFQ
universidades USFQ
language
format Tesis de Pregrado
topic Sonido
Turbinas
Presión Sonora
Mediciones
CIENCIAS
FÍSICA
spellingShingle Sonido
Turbinas
Presión Sonora
Mediciones
CIENCIAS
FÍSICA
McBride, Sterling
Wind power and sound generation aero-acoustic noise prediction for wind turbines
description The noise produced by wind turbines has become a matter of concern during the last few years, especially since larger wind turbines are being built and some of them near populated areas. The main purpose of this thesis is to create a model that predicts the overall A-weighted sound pressure levels on a spherical grid around a wind turbine. In this case, the wind turbine used for modeling was Nordtank NTK 500/4, and in order to obtain results, experimental wind tunnel airfoil noise data was used. The obtained results show that the overall A-weighted sound pressure levels on the sphere grid surrounding the wind turbine have maximum values that are around 35 [dBa] and minimum of 0[dBa]. The highest values are located on the poles of the sphere, parallel to the plain of rotation of the blades. The lowest values are located at the center of the sphere, perpendicular to the plain of rotation of the blades. Additionally, it was determined that as the blades of the wind turbine rotate, the noise is characterized by an oscillating behavior.
author2 Chiriboga, Patricio (dir)
author_facet Chiriboga, Patricio (dir)
McBride, Sterling
author McBride, Sterling
author_sort McBride, Sterling
title Wind power and sound generation aero-acoustic noise prediction for wind turbines
title_short Wind power and sound generation aero-acoustic noise prediction for wind turbines
title_full Wind power and sound generation aero-acoustic noise prediction for wind turbines
title_fullStr Wind power and sound generation aero-acoustic noise prediction for wind turbines
title_full_unstemmed Wind power and sound generation aero-acoustic noise prediction for wind turbines
title_sort wind power and sound generation aero-acoustic noise prediction for wind turbines
publisher Quito: USFQ, 2015
publishDate 2015
url http://repositorio.usfq.edu.ec/handle/23000/4141
_version_ 1635478384816422912
score 11,871979

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