Ramo, Andrea Arroyo, Morency, Clara, Moreau, Stéphane, Bauerheim, Michaël et Sandberg, Richard D..
2025.
« Noise prediction of a controlled diffusion airfoil at high angle-of-attack ».
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
Direct Numerical Simulations (DNS) of the compressible flow over a Controlled Diffusion (CD) airfoil are conducted at a high geometrical angle-of-attack of 15°. To obtain far field noise predictions, the compressible DNS results are coupled with the Ffowcs Williams & Hawkings acoustic analogy. The mean installation effects associated with open-jet anechoic wind tunnel conditions are included in the computations. A large flow separation with a large coherent structure shedding is observed in the front part of the airfoil, followed by a re-attachment at mid-chord, and a second flow detachment downstream. Similar to the work previously conducted on the 8° case, three noise sources have been found: the flow separation and reattachment; the interaction between the attached turbulent flow at the trailing edge; and a secondary instability in the near wake. Yet, the first noise source is predominant at a high angle-of-attack of 15°.
| 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 15:21 |
| Dernière modification: | 18 déc. 2025 15:21 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32483 |
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