Preliminary Study of the Effects of Leading-Edge Serration on a Two-Section Planar Wing in ground-effect at Low Reynolds Number
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arXiv
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| Format: | Preprint |
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2025
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| author | Lafond-Saunierr, Arnold Basile, Simone Pizarro, Paloma Yamamoto, Kiana Nagib, Hassan M. Vinuesa, Ricardo Mariani, Raffaello |
| author_facet | Lafond-Saunierr, Arnold Basile, Simone Pizarro, Paloma Yamamoto, Kiana Nagib, Hassan M. Vinuesa, Ricardo Mariani, Raffaello |
| contents | A preliminary study has been conducted on the effects of serration on the leading-edge of a two-element trapezoidal wing placed both out-of- and in-ground effect. Aerodynamic performance and flow behaviour were evaluated numerically and validated experimentally. Results indicate an increase in maximum lift coefficient and stall angle obtained implementing a serrated leading-edge geometry due to the flow being re-energized by the formation of a series of counter-rotating pairs of vortices.
Results from the analysis of the wing in ground effect appear less well defined. Both leading-edge geometries -- straight and serrated -- show an increase in efficiency due to the proximity to the ground. The wing with the straight leading-edge geometry shows constant improvement up to stall, whilst numerical results show a significant decrease in lift performance at high angles of attack. This may be caused by the lower-fidelity numerical model implemented at higher angles of attack, thus yielding less accurate results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_07270 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Preliminary Study of the Effects of Leading-Edge Serration on a Two-Section Planar Wing in ground-effect at Low Reynolds Number Lafond-Saunierr, Arnold Basile, Simone Pizarro, Paloma Yamamoto, Kiana Nagib, Hassan M. Vinuesa, Ricardo Mariani, Raffaello Fluid Dynamics 76B47, 76G25 A preliminary study has been conducted on the effects of serration on the leading-edge of a two-element trapezoidal wing placed both out-of- and in-ground effect. Aerodynamic performance and flow behaviour were evaluated numerically and validated experimentally. Results indicate an increase in maximum lift coefficient and stall angle obtained implementing a serrated leading-edge geometry due to the flow being re-energized by the formation of a series of counter-rotating pairs of vortices. Results from the analysis of the wing in ground effect appear less well defined. Both leading-edge geometries -- straight and serrated -- show an increase in efficiency due to the proximity to the ground. The wing with the straight leading-edge geometry shows constant improvement up to stall, whilst numerical results show a significant decrease in lift performance at high angles of attack. This may be caused by the lower-fidelity numerical model implemented at higher angles of attack, thus yielding less accurate results. |
| title | Preliminary Study of the Effects of Leading-Edge Serration on a Two-Section Planar Wing in ground-effect at Low Reynolds Number |
| topic | Fluid Dynamics 76B47, 76G25 |
| url | https://arxiv.org/abs/2512.07270 |