CFD analysis for the performance of Gurney flap on aerofoil and vertical axis turbine

Yan Yan; Eldad Avital; John Williams; Theodosios Korakianitis

doi:10.18178/ijmerr.8.3.385-392

CFD analysis for the performance of Gurney flap on aerofoil and vertical axis turbine

Yan Yan, Eldad Avital, John Williams, Theodosios Korakianitis

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

A numerical study was carried out to investigate the effects of a Gurney flap on the aerodynamics performance of the NACA 0018 aerofoil and an associated three-blades rotor of a H-type Darrieus wind turbine. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are studied using URANS. The height of Gurney flap ranges from 1% to 5% of the aerofoil chord length. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are simulated using URANS. The results show that the Gurney flap can increase the lift and lift-to-drag ratio of the aerofoil. As a result, adding a Gurney flap can significantly improve the power coefficient of the VAWT at low tip speed ratio, where it typically gives low power production. The causing mechanism is discussed in detail.

Original language	English
Pages (from-to)	385-392
Number of pages	8
Journal	International Journal of Mechanical Engineering and Robotics Research
Volume	8
Issue number	3
DOIs	https://doi.org/10.18178/ijmerr.8.3.385-392
Publication status	Published - 1 May 2019
Externally published	Yes

Keywords

Aerofoil
CFD
Gurney flap
Wind turbine

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10.18178/ijmerr.8.3.385-392

Cite this

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title = "CFD analysis for the performance of Gurney flap on aerofoil and vertical axis turbine",

abstract = "A numerical study was carried out to investigate the effects of a Gurney flap on the aerodynamics performance of the NACA 0018 aerofoil and an associated three-blades rotor of a H-type Darrieus wind turbine. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are studied using URANS. The height of Gurney flap ranges from 1\% to 5\% of the aerofoil chord length. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are simulated using URANS. The results show that the Gurney flap can increase the lift and lift-to-drag ratio of the aerofoil. As a result, adding a Gurney flap can significantly improve the power coefficient of the VAWT at low tip speed ratio, where it typically gives low power production. The causing mechanism is discussed in detail.",

keywords = "Aerofoil, CFD, Gurney flap, Wind turbine",

author = "Yan Yan and Eldad Avital and John Williams and Theodosios Korakianitis",

note = "Publisher Copyright: {\textcopyright} 2019 Int. J. Mech. Eng. Rob. Res.",

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doi = "10.18178/ijmerr.8.3.385-392",

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T1 - CFD analysis for the performance of Gurney flap on aerofoil and vertical axis turbine

AU - Yan, Yan

AU - Avital, Eldad

AU - Williams, John

AU - Korakianitis, Theodosios

PY - 2019/5/1

Y1 - 2019/5/1

N2 - A numerical study was carried out to investigate the effects of a Gurney flap on the aerodynamics performance of the NACA 0018 aerofoil and an associated three-blades rotor of a H-type Darrieus wind turbine. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are studied using URANS. The height of Gurney flap ranges from 1% to 5% of the aerofoil chord length. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are simulated using URANS. The results show that the Gurney flap can increase the lift and lift-to-drag ratio of the aerofoil. As a result, adding a Gurney flap can significantly improve the power coefficient of the VAWT at low tip speed ratio, where it typically gives low power production. The causing mechanism is discussed in detail.

AB - A numerical study was carried out to investigate the effects of a Gurney flap on the aerodynamics performance of the NACA 0018 aerofoil and an associated three-blades rotor of a H-type Darrieus wind turbine. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are studied using URANS. The height of Gurney flap ranges from 1% to 5% of the aerofoil chord length. The flow fields around a single aerofoil and the Vertical Axis Wind Turbine (VAWT) rotor are simulated using URANS. The results show that the Gurney flap can increase the lift and lift-to-drag ratio of the aerofoil. As a result, adding a Gurney flap can significantly improve the power coefficient of the VAWT at low tip speed ratio, where it typically gives low power production. The causing mechanism is discussed in detail.

KW - Aerofoil

KW - CFD

KW - Gurney flap

KW - Wind turbine

UR - https://www.scopus.com/pages/publications/85065574037

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SN - 2278-0149

VL - 8

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JO - International Journal of Mechanical Engineering and Robotics Research

JF - International Journal of Mechanical Engineering and Robotics Research

IS - 3

ER -

CFD analysis for the performance of Gurney flap on aerofoil and vertical axis turbine

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Keywords

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