Thickness effect of NACA foils on hydrodynamic global parameters, boundary layer states and stall establishment

Thickness effect of NACA foils on hydrodynamic global parameters, boundary layer states and stall establishment

The present study experimentally investigates the hydrodynamic behaviour of 2-D NACA (15%, 25% and 35%) symmetric hydrofoils at Reynolds number 0.5×10 6. Particular attention was paid to the hysteretic behaviour at the static stall angle, and a detailed cartography of the boundary layer structures (...

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Veröffentlicht in:Journal of fluids and structures 2010-05, Vol.26 (4), p.559-578
Hauptverfasser: Sarraf, C., Djeridi, H., Prothin, S., Billard, J.Y.
Format: Artikel
Sprache:eng
Schlagworte:
Aerodynamics
Applied fluid mechanics
Boundary layer
Earth Sciences
Engineering Sciences
Exact sciences and technology
Fluid dynamics
Fluid flow
Fluids mechanics
Foils (structural shapes)
Fundamental areas of phenomenology (including applications)
General theory
Hydrodynamics
Hydrofoils
Hysteresis
Lift and drag
Mechanics
Oceanography
Physics
Sciences of the Universe
Stall
Thick foils
Von Kármán street
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Zusammenfassung:The present study experimentally investigates the hydrodynamic behaviour of 2-D NACA (15%, 25% and 35%) symmetric hydrofoils at Reynolds number 0.5×10 6. Particular attention was paid to the hysteretic behaviour at the static stall angle, and a detailed cartography of the boundary layer structures ( integral quantities and velocity profiles) is given to support the detachment mechanism and the onset of von Kármán instability for thick hydrofoils.
ISSN:0889-9746
1095-8622
DOI:10.1016/j.jfluidstructs.2010.02.004