Wedged Gurney Flap for performance improvement of Vertical Axis Wind Turbines

Syawitri, Taurista Perdana; Yao, Yufeng; Yao, Jun; Chandra, Budi; Kultsum, Ummi

doi:10.1007/978-981-97-8197-3_31

Wedged Gurney Flap for performance improvement of Vertical Axis Wind Turbines

Syawitri, Taurista Perdana; Yao, Yufeng; Yao, Jun; Chandra, Budi; Kultsum, Ummi

Authors

Taurista Perdana Syawitri

Yufeng Yao Yufeng.Yao@uwe.ac.uk
Professor in Aerospace Engineering

Dr Jun Yao Jun.Yao@uwe.ac.uk
Senior Lecturer Aerospace Themofluids

Budi Chandra Budi.Chandra@uwe.ac.uk
Associate Director (Mobility Technologies)

Ummi Kultsum

Contributors

Suwarno Suwarno
Editor

Muhammad Aziz
Editor

Mohan Kolhe
Editor

Triyogi Yuwono
Editor

Abstract

This study evaluates the wedged Gurney Flap (GF) on a three- straight-bladed Vertical Axis Wind Turbine (VAWT) using Computational Fluid Dynamics (CFD) simulations. The analysis considers the rotating effect of the blades at three different Tip Speed Ratios (TSRs) corresponding to low, medium, and high ranges. A hybrid RANS-LES model, specifically the stress- blended eddy simulation with transition shear-stress transport turbulence model, is employed for the simulations. The results indicate that the wedged GF does not provide significant performance enhancements for the VAWT at most TSR ranges, contrary to the findings in studies focused on stationary aerofoils. Specifically, it is observed that the wedged GF, only improves the power coefficient of the VAWT with GF at low TSR ranges by approximately 3.402% compared to the VAWT with the original GF shape. However, at medium and high TSR ranges, the wedged GF does not exhibit the capability to enhance the VAWT's performance compared to the original GF shape.

Presentation Conference Type	Conference Paper (published)
Conference Name	ICOME 2023
Start Date	Aug 30, 2023
End Date	Aug 31, 2023
Online Publication Date	Feb 18, 2025
Publication Date	Feb 18, 2025
Deposit Date	Apr 8, 2025
Publicly Available Date	Feb 19, 2026
Publisher	Springer
Peer Reviewed	Not Peer Reviewed
Pages	319-327
Series Title	Lecture Notes in Electrical Engineering
Book Title	Smart Innovation in Green and Sustainable Energy
ISBN	9789819781966
DOI	https://doi.org/10.1007/978-981-97-8197-3_31
Public URL	https://uwe-repository.worktribe.com/output/14284828
Additional Information	First Online: 18 February 2025; Conference Acronym: ICOME; Conference Name: International Conference on Mechanical Engineering; Conference City: Bali; Conference Country: Indonesia; Conference Year: 2023; Conference Start Date: 30 August 2023; Conference End Date: 31 August 2023; Conference ID: icome2023; Conference URL: https://elib.its.ac.id/conf/icome/