Tonal Noise Control Versus Performances on NACA0015 Hydrofoil
Article dans une revue avec comité de lecture
Strong correlation between boundary layer excitation and hydrofoil eigenmode occurs for specific angles of attack and Reynolds numbers, resulting in strong tonal noise emissions under certain circumstances. This study aims to analyze the performance of vibration control methods such as truncated trailing edge or boundary layer triggering. The study explores the conditions for hydro elastic trailing edge vibrations on a hydrofoil clamped in a hydrodynamic tunnel, with tests performed for Reynolds numbers up to 1.2 × 10⁶ and various angles of attack up to 10°. Experiments were conducted on a clamped 0.1 m chord NACA0015 aluminum hydrofoil, with measurements taken for both vibrations and hydrodynamic components such as lift, drag, and moment. The goal of the study is to closely understand the impact of vibration control on hydrofoil efficiency. This could be very beneficial for those who are working on optimizing profile design. The study first presents the experimental setup, followed by an analysis of the hydrofoil’s vibratory response and a presentation of the effectiveness of control solutions. Then, the performance of these solutions is discussed followed by a conclusion.
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Communication avec acteFRANCOIS, Paul; AMANDOLESE, Xavier (Association Française de Mécanique (AFM), 2022)This paper explores the conditions for hydro-elastic trailing edge vibrations on a NACA0015 aluminium hydrofoil clamped in a hydrodynamic tunnel. Test were performed for Reynolds numbers ranging from 2×10⁵ up to 9×10⁵ and ...
Article dans une revue avec comité de lectureThis paper explores the conditions for hydroelastic trailing edge vibrations generating tonal noise on a NACA0015 aluminium hydrofoil clamped in a hydrodynamic tunnel. Tests were performed for Reynolds numbers, ranging ...
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Maxillary shape after primary cleft closure and before alveolar bone graft in two different management protocols: A comparative morphometric study Article dans une revue avec comité de lectureGIRINON, François; KETOFF, Serge; HENNOCQ, Quentin; KOGANE, Nicolas; ULLMANN, Nicolas; KADLUB, Natacha; GALLIANI, Eva; NEIVA-VAZ, Cécilia; VASQUEZ, Marie-Paule; PICARD, Arnaud; KHONSARI, Roman Hossein (Elsevier Masson, 2019)AIM AND SCOPE: Result assessment in cleft surgery is a technical challenge and requires the development of dedicated morphometric tools. Two cohorts of patients managed according to two different protocols were assessed ...