The unsteady turbulent flow on or near lifting surfaces is often a source of hydroacoustic noise. Turbulence in these regions may produce noise directly and hydrodynamically-forced structural motions may radiate noise as well. Interaction between a hydrofoil's unsteady vortical wake and its own structure may produce undesired self-sustaining vibrations. This paper reports on a series of recent experiments focused on these phenomena high Reynolds numbers. The tests were conducted in the United States Navy's William B. Morgan Large Cavitation Channel at flow speeds up to 18.3 m/s on a two-dimensional test-section-spanning hydrofoil (2.13 m chord, 3.05 m span, 0.171 m maximum thickness) at angles of attack between -1° and +1°. The measurements include foil surface static and dynamic pressures, foil vibration, LDV-determined average flow velocities and turbulence quantities, and PIV flow fields in the immediate vicinity of the foil's trailing edge.
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