The effect of leading edge serrations on dynamic stall
The effect of leading edge serrations on dynamic stall
An investigation into the effects of dynamic stall was carried out on six aerofoil profiles with sinusoidal leading edges having two amplitudes and three different wavelengths. The study also investigated the effect of wavelength on the static performance of the aerofoil as well as the static hysteresis performance of these profiles. Compared to a baseline model, it was found that a reduction in wavelength increased the maximum lift and the static stall angle. The maximum baseline lift was not reached in any of the cases. The static hysteresis performance of the sinusoidal leading edge profiles was found to be significantly better than the baseline with virtually no static hysteresis recorded. The dynamic study revealed that the sinusoidal profiles improved the performance of the aerofoil by increasing the maximum percentage of lift generated as well as by reducing the size of the hysteresis loop.
Borg, Jonathan
7bb1106a-4351-4ef8-a5ae-37a7688cffcc
2012
Borg, Jonathan
7bb1106a-4351-4ef8-a5ae-37a7688cffcc
Ganapathisubramani, B.
5e69099f-2f39-4fdd-8a85-3ac906827052
Borg, Jonathan
(2012)
The effect of leading edge serrations on dynamic stall.
University of Southampton, Faculty of Engineering and the Environment, Masters Thesis, 68pp.
Record type:
Thesis
(Masters)
Abstract
An investigation into the effects of dynamic stall was carried out on six aerofoil profiles with sinusoidal leading edges having two amplitudes and three different wavelengths. The study also investigated the effect of wavelength on the static performance of the aerofoil as well as the static hysteresis performance of these profiles. Compared to a baseline model, it was found that a reduction in wavelength increased the maximum lift and the static stall angle. The maximum baseline lift was not reached in any of the cases. The static hysteresis performance of the sinusoidal leading edge profiles was found to be significantly better than the baseline with virtually no static hysteresis recorded. The dynamic study revealed that the sinusoidal profiles improved the performance of the aerofoil by increasing the maximum percentage of lift generated as well as by reducing the size of the hysteresis loop.
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Published date: 2012
Organisations:
University of Southampton, Aerodynamics & Flight Mechanics Group
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Local EPrints ID: 343276
URI: http://eprints.soton.ac.uk/id/eprint/343276
PURE UUID: 02d0bf1c-5643-49ed-b3d4-58cdc4c1ab34
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Date deposited: 06 Dec 2012 10:13
Last modified: 15 Mar 2024 03:37
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Author:
Jonathan Borg
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