Proceedings of the Adisutjipto Aerospace, Science and Engineering International Conference (AASEIC 2024)

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CFD Study on The Influence of Gurney Flap Width to Wind Turbine Aerodynamics Performance of The Asymmetrical Airfoil

Authors
Eli Kumolosari1, *, Fajar Khanif Rahmawati1, Aris Sandi2
1Faculty of Aerospace Technology, Institut Teknologi Dirgantara Adisutjipto, Banguntapan, Indonesia
2Associate degree (D2) of Plantation Product Processing Machine Maintenance, Politeknik LPP, Yogyakarta, Indonesia
*Corresponding author. Email: elikumolosari@itda.ac.id
Corresponding Author
Eli Kumolosari
Available Online 31 March 2025.
DOI
10.2991/978-94-6463-668-0_15How to use a DOI?
Keywords
Airfoil; gurney flap; CFD; wind turbine; CL/CD
Abstract

In a wind turbine, the blade is a key component that functions to capture wind energy. Wind turbine blades have the ability to convert kinetic energy into force due to their curved shape, known as an airfoil. Design modifications, such as adding components like a gurney flap to the airfoil, can increase lift force and delay stall. The CFD study aimed to compare the influence of gurney flap width as the wind turbine application. The turbulence model applied in this simulation was the k-ω SST and scheme of solution methods was Coupled. The temperature used in this study was 288 K, with a Reynolds number of 600,000. The addition of the GF was set with a length of 1.25 percent-c and the position of 0 percent-c. The GF was installed at a 90-degree downward angle, as the goal was to achieve an increase in lift force (positive lift force value). The variation of the width were 0.75 percent-c, 1 percent-c, and 1.25 percent-c. The results showed that gurney flap affects the aerodynamics performance of airfoil by increasing the value of CL/CD. For wind turbine application (low velocity), gurney flap with 1%c width has the highest value of CL/CD.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the Adisutjipto Aerospace, Science and Engineering International Conference (AASEIC 2024)
Series
Advances in Engineering Research
Publication Date
31 March 2025
ISBN
978-94-6463-668-0
ISSN
2352-5401
DOI
10.2991/978-94-6463-668-0_15How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Eli Kumolosari
AU  - Fajar Khanif Rahmawati
AU  - Aris Sandi
PY  - 2025
DA  - 2025/03/31
TI  - CFD Study on The Influence of Gurney Flap Width to Wind Turbine Aerodynamics Performance of The Asymmetrical Airfoil
BT  - Proceedings of the Adisutjipto Aerospace, Science and Engineering International Conference (AASEIC 2024)
PB  - Atlantis Press
SP  - 119
EP  - 126
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-668-0_15
DO  - 10.2991/978-94-6463-668-0_15
ID  - Kumolosari2025
ER  -