Abstract
Cavitation in cryogenic fluids was simulated on a NACA0015 hydrofoil in a closed-loop facility filled with a perfluorinated ketone that exhibits a strong thermodynamic effect at ambient conditions. Static pressures were measured at seven locations along the hydrofoil chord and along the wall of the test section. Images were collected using both a laser sheet and diffused light to investigate dynamics of the flow. Speeds up to 7.5 m/s and temperatures up to 40°C showed the formation and collapse of vapor bubbles in regimes ranging from incipient cavitation to supercavitation. Effects of velocity, cavitation number and temperature were studied. Cavitation was observed before static pressure dropped to saturation pressure. Pressure and frequency analysis of this phenomenon is described below.
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