A New Method of Sectional Expression of Wind Turbine Airfoil Function

To expand the airfoil database and realize the reverse digital airfoil design, this paper proposes a new sectional expression function of wind turbine airfoil based on the Joukowski transformation and derives the function equation for the novel airfoil. Compared with the existing airfoil function, t...

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Autores principales:	Zhaohuang Zhang, Di Gao, Jia Li, Xiaona Jia
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	wind turbine airfoil sectional function airfoil function expression Joukowski transformation pressure distribution Technology T
Acceso en línea:	https://doaj.org/article/8dda429ae3e64fef99a2f0d6a06da8a6
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spelling	oai:doaj.org-article:8dda429ae3e64fef99a2f0d6a06da8a62021-11-11T16:02:48ZA New Method of Sectional Expression of Wind Turbine Airfoil Function10.3390/en142173091996-1073https://doaj.org/article/8dda429ae3e64fef99a2f0d6a06da8a62021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7309https://doaj.org/toc/1996-1073To expand the airfoil database and realize the reverse digital airfoil design, this paper proposes a new sectional expression function of wind turbine airfoil based on the Joukowski transformation and derives the function equation for the novel airfoil. Compared with the existing airfoil function, the new airfoil function can adjust the parameter values to control the relative thickness, relative thickness position, relative camber, and relative camber position of the airfoil. Taking the common airfoil (NACA63-212) as an example, the existing airfoil is fitted according to the expected direction. The maximum fitting deviation is <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mrow><mo>.</mo><mn>22135</mn></mrow><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mrow><mo>-</mo><mn>3</mn></mrow></mrow></msup></mrow></semantics></math></inline-formula>, better than the four existing methods for airfoil shape fitting, which demonstrates well the practicability and accuracy of this method. It also shows that changing the parameter values can generate a new airfoil to enrich the airfoil database. Therefore, the proposed method broadens the ideas for airfoil design and method research.Zhaohuang ZhangDi GaoJia LiXiaona JiaMDPI AGarticlewind turbineairfoil sectional functionairfoil function expressionJoukowski transformationpressure distributionTechnologyTENEnergies, Vol 14, Iss 7309, p 7309 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	wind turbine airfoil sectional function airfoil function expression Joukowski transformation pressure distribution Technology T
spellingShingle	wind turbine airfoil sectional function airfoil function expression Joukowski transformation pressure distribution Technology T Zhaohuang Zhang Di Gao Jia Li Xiaona Jia A New Method of Sectional Expression of Wind Turbine Airfoil Function
description	To expand the airfoil database and realize the reverse digital airfoil design, this paper proposes a new sectional expression function of wind turbine airfoil based on the Joukowski transformation and derives the function equation for the novel airfoil. Compared with the existing airfoil function, the new airfoil function can adjust the parameter values to control the relative thickness, relative thickness position, relative camber, and relative camber position of the airfoil. Taking the common airfoil (NACA63-212) as an example, the existing airfoil is fitted according to the expected direction. The maximum fitting deviation is <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mrow><mo>.</mo><mn>22135</mn></mrow><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mrow><mo>-</mo><mn>3</mn></mrow></mrow></msup></mrow></semantics></math></inline-formula>, better than the four existing methods for airfoil shape fitting, which demonstrates well the practicability and accuracy of this method. It also shows that changing the parameter values can generate a new airfoil to enrich the airfoil database. Therefore, the proposed method broadens the ideas for airfoil design and method research.
format	article
author	Zhaohuang Zhang Di Gao Jia Li Xiaona Jia
author_facet	Zhaohuang Zhang Di Gao Jia Li Xiaona Jia
author_sort	Zhaohuang Zhang
title	A New Method of Sectional Expression of Wind Turbine Airfoil Function
title_short	A New Method of Sectional Expression of Wind Turbine Airfoil Function
title_full	A New Method of Sectional Expression of Wind Turbine Airfoil Function
title_fullStr	A New Method of Sectional Expression of Wind Turbine Airfoil Function
title_full_unstemmed	A New Method of Sectional Expression of Wind Turbine Airfoil Function
title_sort	new method of sectional expression of wind turbine airfoil function
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8dda429ae3e64fef99a2f0d6a06da8a6
work_keys_str_mv	AT zhaohuangzhang anewmethodofsectionalexpressionofwindturbineairfoilfunction AT digao anewmethodofsectionalexpressionofwindturbineairfoilfunction AT jiali anewmethodofsectionalexpressionofwindturbineairfoilfunction AT xiaonajia anewmethodofsectionalexpressionofwindturbineairfoilfunction AT zhaohuangzhang newmethodofsectionalexpressionofwindturbineairfoilfunction AT digao newmethodofsectionalexpressionofwindturbineairfoilfunction AT jiali newmethodofsectionalexpressionofwindturbineairfoilfunction AT xiaonajia newmethodofsectionalexpressionofwindturbineairfoilfunction
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A New Method of Sectional Expression of Wind Turbine Airfoil Function

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