Rochefort, Philippe, Précourt, Louis, Winckelmans, Grégoire et Dumas, Guy.
2025.
« Characterization of flow curvature effects on a NACA 0015 airfoil attached at the quarter-chord ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
The blades of vertical-axis turbines (VAT) operate in curved and nearly circular flow. Compared to a uniform flow, the curved streamlines alter the aerodynamic coefficients of the airfoil. As a result, measuring and predicting the aerodynamic coefficients of an airfoil in curved flow presents a challenge. In this work, we first present a methodology to properly measure the aerodynamic coefficients (lift, drag, and moment) of a NACA 0015 airfoil attached at the quarter-chord in steady curved flow at Rec = 6 × 106 using CFD with a “key-hole mesh domain”. By varying the airfoil’s angle of attack and the airfoil’s chord to turbine’s radius ratio (c/R), the curves for Cl(?), Cmc/4 (?) and Cd(?) are obtained and presented. The results show that the curvature effects on the aerodynamic coefficients are significant. In particular, it is observed that the drag is significantly influenced by the flow curvature, which we show to be closely related to the moment coefficient of the airfoil and the moment coefficient about the airfoil’s rotation axis (Cm0). Furthermore, the Coriolis effect on Cd is shown to cause an asymmetry in the typical U-shaped drag curve observed in uniform flow. The findings of this investigation will help develop improved models for actuator line methods (ALM).
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:32 |
| Dernière modification: | 18 déc. 2025 15:32 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32489 |
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