Effects on cavitation inception of leading and trailing edge flaps on a high-performance hydrofoil
Article dans une revue avec comité de lecture
JournalApplied Ocean Research
For the high-performance foiling yachts, cavitation is often a limiting factor for take-off and top speed. The present work investigates solutions to delay the onset of cavitation thanks to a combination of leading edge and trailing edge flaps. Both numerical studies based on a potential code and experiments in a hydrodynamic tunnel are conducted in order to assess the effect of specific geometric parameters on the hydrodynamic performance and cavitation inception. Experimentally the effect on the hydrodynamic performances and cavitation buckets of a 70% chord trailing edge flap and a 20% chord leading edge flap of NACA 0012 is investigated. The hydrofoils are manufactured using a 3D printer technique at IRENav and tested in the cavitation tunnel of the institute at an inflow velocity of 6.67 m/s (Re = 10⁶). The results show that the lift coefficient increases and the cavitation bucket gets larger with the flaps deflection. The experimental results are in good agreement with the numerical ones by highlighting the capacity of the flaps to enlarge both the operating domain and the cavitation bucket of the hydrofoil.
Files in this item
- IRENAV_AOR_2022_MOHAMMED ARAB.pdf
- Embargoed until:
Showing items related by title, author, creator and subject.
Article dans une revue avec comité de lectureDUCOIN, Antoine; DENISET, François; ASTOLFI, Jacques Andre; SIGRIST, Jean-François (Elsevier, 2009)The present study is developed within the framework of marine structure design operating in transient regimes. It deals with an experimental and numerical investigation of the time–space distribution of the wall-pressure ...
Article dans une revue avec comité de lectureDELAFIN, Pierre-Luc; DENISET, François; ASTOLFI, Jacques André; HAUVILLE, Frédéric (MDPI AG, 2021)Vertical axis turbines, also called Darrieus turbines, present interesting characteristics for offshore wind and tidal applications but suffer from vibrations and a lower efficiency than the more conventional horizontal ...
Effect of the laminar separation bubble induced transition on the hydrodynamic performance of a hydrofoil Article dans une revue avec comité de lectureDELAFIN, Pierre Luc; DENISET, François; ASTOLFI, Jacques Andre (Elsevier, 2014)The present study deals with the effect of the laminar separation bubble (LSB) induced transition on the lift, drag and moment coefficients of a hydrofoil. A 2D numerical study, based on the SST γ –Reθ transition model of ...
BrevetDAMAY, Thomas; HAUVILLE, Frédéric; ASTOLFI, Jacques-André (Patent Application Publication, 2022-03-03)A cycloidal dynamic propulsion or positioning system for a ship in water that exhibits a direction of flow, including a frame, a rotor mounted to be movable in rotation on the frame about a main axis at right angles to the ...
BrevetDAMAY, Thomas; HAUVILLE, Frédéric; ASTOLFI, Jacques-André (INPI, 2019-01)L'invention concerne un système de propulsion ou de positionnement dynamique cycloïdal pour un navire baignant dans une eau présentant une direction d'écoulement et comportant un châssis, un rotor montè mobile en rotation ...