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Wedged Gurney Flap for performance improvement of vertical axis wind turbines

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

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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

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

Ummi Kultsum



Abstract

The 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 airfoils. 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.

Citation

Perdana Syawitri, T., Yao, Y., Yao, J., Chandra, B., & Kultsum, U. (2023, August). Wedged Gurney Flap for performance improvement of vertical axis wind turbines. Paper presented at The 6th International Conference on Mechanical Engineering, ICOME 2023, Bali, Indonesia

Presentation Conference Type Conference Paper (unpublished)
Conference Name The 6th International Conference on Mechanical Engineering, ICOME 2023
Conference Location Bali, Indonesia
Start Date Aug 30, 2023
End Date Aug 31, 2023
Deposit Date Sep 27, 2023
Publicly Available Date Sep 28, 2023
Public URL https://uwe-repository.worktribe.com/output/11139931

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